modicon ladder logic block library user guide volume 2 · 2011-07-05 · 043505766.81 modicon...

$: Modicon Ladder Logic Block Library User Guide Volume 2 · 2011-07-05 · 043505766.81 Modicon Ladder Logic Block Library User Guide Volume 2 840 USE 101 00 4/2006 7KLVGRFXPHQWSURYLGHGE\%DUU$
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ModiconLadder Logic Block Library User GuideVolume 2840 USE 101 00

4/2006

This document provided by Barr-Thorp Electric Co., Inc. 800-473-9123 www.barr-thorp.com

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Table of Contents

Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xxvii

About the Book . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxix

Part I General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Chapter 1 Ladder Logic Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3Segments and Networks in Ladder Logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4How a PLC Solves Ladder Logic. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Ladder Logic Elements and Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Chapter 2 Memory Allocation in a PLC . . . . . . . . . . . . . . . . . . . . . . . . . . .15User Memory. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16State RAM Values. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18State RAM Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20The Configuration Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22The I/O Map Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Chapter 3 Ladder Logic Opcodes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27Translating Ladder Logic Elements in the System Memory Database . . . . . . . . 28Translating DX Instructions in the System Memory Database . . . . . . . . . . . . . . 30Opcode Defaults for Loadables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Chapter 4 Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35Parameter Assignment of Instuctions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35


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Chapter 5 Instruction Groups. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37Instruction Groups . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38ASCII Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39Counters and Timers Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40Fast I/O Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41Loadable DX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42Math Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43Matrix Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45Miscellaneous . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46Move Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47Skips/Specials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48Special Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49Coils, Contacts and Interconnects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Chapter 6 Equation Networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51Equation Network Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52Mathematical Equations in Equation Networks . . . . . . . . . . . . . . . . . . . . . . . . . . 55Mathematical Operations in Equation Networks . . . . . . . . . . . . . . . . . . . . . . . . . 59Mathematical Functions in Equation Networks . . . . . . . . . . . . . . . . . . . . . . . . . . 64Data Conversions in an Equation Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66Roundoff Differences in PLCs without a Math Coprocessor . . . . . . . . . . . . . . . . 68Benchmark Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

Chapter 7 Closed Loop Control / Analog Values . . . . . . . . . . . . . . . . . . . 71Closed Loop Control / Analog Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72PCFL Subfunctions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73A PID Example. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77PID2 Level Control Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

Chapter 8 Formatting Messages for ASCII READ/WRIT Operations . . . 83Formatting Messages for ASCII READ/WRIT Operations . . . . . . . . . . . . . . . . . . 84Format Specifiers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85Special Set-up Considerations for Control/Monitor Signals Format. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

Chapter 9 Coils, Contacts and Interconnects. . . . . . . . . . . . . . . . . . . . . . 91Coils . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92Contacts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94Interconnects (Shorts) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96

Chapter 10 Interrupt Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

Chapter 11 Subroutine Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99


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Chapter 12 Installation of DX Loadables . . . . . . . . . . . . . . . . . . . . . . . . . .101

Part II Instruction Descriptions (A to D) . . . . . . . . . . . . . . . . . 103

Chapter 13 1X3X - Input Simulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105Short Description: 1X3X - Input Simulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106Representation: 1X3X - Input Simulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

Chapter 14 AD16: Ad 16 Bit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .109Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110Representation: AD16 - 16-bit Addition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

Chapter 15 ADD: Addition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .113Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114Representation: ADD - Single Precision Add . . . . . . . . . . . . . . . . . . . . . . . . . . 115

Chapter 16 AND: Logical And . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .117Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118Representation: AND - Logical And . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119Parameter Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

Chapter 17 BCD: Binary to Binary Code . . . . . . . . . . . . . . . . . . . . . . . . . .123Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124Representation: BCD - Binary Coded Decimal Conversion . . . . . . . . . . . . . . . 125

Chapter 18 BLKM: Block Move . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .127Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128Representation: BLKM - Block Move . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129

Chapter 19 BLKT: Block to Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .131Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132Representation: BLKT - Block-to-Table Move. . . . . . . . . . . . . . . . . . . . . . . . . . 133Parameter Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134

Chapter 20 BMDI: Block Move with Interrupts Disabled . . . . . . . . . . . . .135Short Description: BMDI - Block Move Interrupts Disabled. . . . . . . . . . . . . . . . 136Representation: BMDI - Block Move Interrupts Disabled . . . . . . . . . . . . . . . . . 137

Chapter 21 BROT: Bit Rotate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .139Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140Representation: BROT - Bit Rotate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141Parameter Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142


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Chapter 22 CALL: Activate Immediate or Deferred DX Function . . . . . . 143Short Description: CALL - Activate Immediate or Deferred DX Function. . . . . . 144Representation: CALL - Activate Immediate DX Function . . . . . . . . . . . . . . . . . 145Representation: CALL - Activate Deferred DX Function . . . . . . . . . . . . . . . . . . 148

Chapter 23 CANT - Interpret Coils, Contacts, Timers, Counters, and the SUB Block. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151Short Description: CANT - Interpret Coils, Contacts, Timers, Counters, and the SUB Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152Representation: CANT - Interpret Coils, Contacts, Timers, Counters, and the SUB Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153Parameter Description: CANT - Interpret Coils, Contacts, Timers, Counters, and the SUB Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154

Chapter 24 CHS: Configure Hot Standby . . . . . . . . . . . . . . . . . . . . . . . . . 157Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158Representation: CHS - Configure Hot Standby . . . . . . . . . . . . . . . . . . . . . . . . . 159Detailed Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160

Chapter 25 CKSM: Check Sum. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164Representation: CKSM - Checksum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166

Chapter 26 CMPR: Compare Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168Representation: CMPR - Logical Compare . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170

Chapter 27 Coils . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171Short Description: Coils . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172General Usage Guidelines: Coils. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173

Chapter 28 COMM - ASCII Communications Function . . . . . . . . . . . . . . 175Short Description: COMM - ASCII Communications Block . . . . . . . . . . . . . . . . 176Representation: COMM - ASCII Communications Function . . . . . . . . . . . . . . . 177

Chapter 29 COMP: Complement a Matrix . . . . . . . . . . . . . . . . . . . . . . . . . 179Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180Representation: COMP - Logical Compliment . . . . . . . . . . . . . . . . . . . . . . . . . . 181Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183

Chapter 30 Contacts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185Short Description: Contacts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186Representation: Contacts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187


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Chapter 31 CONV - Convert Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .189Short Description: CONV - Convert Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 190Representation: CONV - Convert Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191

Chapter 32 CTIF - Counter, Timer, and Interrupt Function. . . . . . . . . . . .193Short Description: CTIF - Counter, Timer, and Interrupt Function . . . . . . . . . . 194Representation: CTIF - Counter, Timer, Interrupt Function. . . . . . . . . . . . . . . . 195Parameter Description: CTIF - Register Usage Table (Top Node) . . . . . . . . . . 196

Chapter 33 DCTR: Down Counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .203Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204Representation: DCTR - Down Counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205

Chapter 34 DIOH: Distributed I/O Health . . . . . . . . . . . . . . . . . . . . . . . . . .207Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 208Representation: DIOH - Distributed I/O Health . . . . . . . . . . . . . . . . . . . . . . . . . 209Parameter Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211

Chapter 35 DISA - Disabled Discrete Monitor. . . . . . . . . . . . . . . . . . . . . .213Short Description: DISA - Disabled Discrete Monitor . . . . . . . . . . . . . . . . . . . . 214Representation: DISA - Disabled Discrete Monitor . . . . . . . . . . . . . . . . . . . . . . 215

Chapter 36 DIV: Divide. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .217Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 218Representation: DIV - Single Precision Division . . . . . . . . . . . . . . . . . . . . . . . . 219Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 221

Chapter 37 DLOG: Data Logging for PCMCIA Read/Write Support. . . . .223Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224Representation: DLOG . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225Parameter Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 226Run Time Error Handling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 228

Chapter 38 DMTH - Double Precision Math . . . . . . . . . . . . . . . . . . . . . . . .229Short Description: DMTH - Double Precision Math - Addition, Subtraction, Multiplication, and Division. . . . . . . . . . . . . . . . . . . . . . . 230Representation: DMTH - Double Precision Math - Addition, Subtraction, Multiplication, and Division. . . . . . . . . . . . . . . . . . . . . . . 231

Chapter 39 DRUM: DRUM Sequencer. . . . . . . . . . . . . . . . . . . . . . . . . . . . .237Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238Representation: DRUM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239Parameter Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 241


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Chapter 40 DV16: Divide 16 Bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 243Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 244Representation: DV16 - 16-bit Division . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 247

Part III Instruction Descriptions (E) . . . . . . . . . . . . . . . . . . . . . .249

Chapter 41 EARS - Event/Alarm Recording System . . . . . . . . . . . . . . . . 251Short Description: EARS - Event/Alarm Recording System . . . . . . . . . . . . . . . 252Representation: EARS - Event/Alarm Recording System . . . . . . . . . . . . . . . . . 253Parameter Description: EARS - Event/Alarm Recording System . . . . . . . . . . . 255

Chapter 42 EMTH: Extended Math . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 259Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260Representation: EMTH - Extended Math Functions . . . . . . . . . . . . . . . . . . . . . 261Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262Floating Point EMTH Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 264

Chapter 43 EMTH-ADDDP: Double Precision Addition . . . . . . . . . . . . . . 265Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 266Representation: EMTH - ADDDP - Double Precision Math - Addition . . . . . . . . 267Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 269

Chapter 44 EMTH-ADDFP: Floating Point Addition . . . . . . . . . . . . . . . . . 271Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272Representation: EMTH - ADDFP - Floating Point Math - Addition. . . . . . . . . . . 273Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 274

Chapter 45 EMTH-ADDIF: Integer + Floating Point Addition. . . . . . . . . . 275Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 276Representation: EMTH - ADDIF - Integer + Floating Point Addition . . . . . . . . . 277Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 278

Chapter 46 EMTH-ANLOG: Base 10 Antilogarithm . . . . . . . . . . . . . . . . . 279Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 280Representation: EMTH - ANLOG - integer Base 10 Antilogarithm . . . . . . . . . . 281Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 283

Chapter 47 EMTH-ARCOS: Floating Point Arc Cosine of an Angle (in Radians) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 285Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 286Representation: EMTH - ARCOS - Floating Point Math - Arc Cosine of an Angle (in Radians) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 287Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 289


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Chapter 48 EMTH-ARSIN: Floating Point Arcsine of an Angle (in Radians) . . . . . . . . . . . . . . . . . . . . . .291Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 292Representation: EMTH - ARSIN - Arcsine of an Angle (in Radians). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 293Parameter Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 294

Chapter 49 EMTH-ARTAN: Floating Point Arc Tangent of an Angle (in Radians) . . . . . . . . . . . . . . . . . . . . . .295Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 296Representation: Floating Point Math - Arc Tangent of an Angle (in Radians) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 297Parameter Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 299

Chapter 50 EMTH-CHSIN: Changing the Sign of a Floating Point Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .301Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 302Representation: EMTH - CHSIN - Change the Sign of aFloating Point Number. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 303Parameter Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 305

Chapter 51 EMTH-CMPFP: Floating Point Comparison . . . . . . . . . . . . . .307Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 308Representation: EMTH - CMFPF - Floating Point Math Comparison . . . . . . . . 309Parameter Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 311

Chapter 52 EMTH-CMPIF: Integer-Floating Point Comparison . . . . . . . .313Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 314Representation: EMTH - CMPIF - Floating Point Math - Integer/Floating Point Comparison . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 315Parameter Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 317

Chapter 53 EMTH-CNVDR: Floating Point Conversion of Degrees to Radians . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .319Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 320Representation: EMTH - CNVDR - Conversion of Degrees to Radians. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 321Parameter Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 323

Chapter 54 EMTH-CNVFI: Floating Point to Integer Conversion . . . . . . .325Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 326Representation: EMTH - CNVFI - Floating Point to Integer Conversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 327Parameter Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 329Runtime Error Handling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 330


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Chapter 55 EMTH-CNVIF: Integer-to-Floating Point Conversion . . . . . . 331Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 332Representation: EMTH - CNVIF - Integer to Floating Point Conversion . . . . . . 333Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 335Runtime Error Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 336

Chapter 56 EMTH-CNVRD: Floating Point Conversion of Radians to Degrees . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 337Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 338Representation: EMTH - CNVRD - Conversion of Radians to Degrees . . . . . . 339Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 341

Chapter 57 EMTH-COS: Floating Point Cosine of an Angle (in Radians) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 343Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 344Representation: EMTH - COS - Cosine of an Angle (in Radians) . . . . . . . . . . . 345Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 346

Chapter 58 EMTH-DIVDP: Double Precision Division . . . . . . . . . . . . . . . 347Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 348Representation: EMTH - DIVDP - Double Precision Math - Division . . . . . . . . . 349Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 351Runtime Error Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 352

Chapter 59 EMTH-DIVFI: Floating Point Divided by Integer . . . . . . . . . . 353Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 354Representation: EMTH - DIVFI - Floating Point Divided by Integer. . . . . . . . . . 355Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 356

Chapter 60 EMTH-DIVFP: Floating Point Division . . . . . . . . . . . . . . . . . . 357Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 358Representation: EMTH - DIVFP - Floating Point Division . . . . . . . . . . . . . . . . . 359Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 360

Chapter 61 EMTH-DIVIF: Integer Divided by Floating Point . . . . . . . . . . 361Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 362Representation: EMTH - DIVIF - Integer Divided by Floating Point. . . . . . . . . . 363Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 364

Chapter 62 EMTH-ERLOG: Floating Point Error Report Log. . . . . . . . . . 365Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 366Representation: EMTH - ERLOG - Floating Point Math - Error Report Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 367Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 369


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Chapter 63 EMTH-EXP: Floating Point Exponential Function . . . . . . . . .371Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 372Representation: EMTH - EXP - Floating Point Math - Exponential Function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 373Parameter Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 375

Chapter 64 EMTH-LNFP: Floating Point Natural Logarithm. . . . . . . . . . .377Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 378Representation: EMTH - LNFP - Natural Logarithm . . . . . . . . . . . . . . . . . . . . . 379Parameter Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 381

Chapter 65 EMTH-LOG: Base 10 Logarithm . . . . . . . . . . . . . . . . . . . . . . .383Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 384Representation: EMTH - LOG - Integer Math - Base 10 Logarithm . . . . . . . . . 385Parameter Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 387

Chapter 66 EMTH-LOGFP: Floating Point Common Logarithm. . . . . . . .389Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 390Representation: EMTH - LOGFP - Common Logarithm . . . . . . . . . . . . . . . . . . 391Parameter Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 393

Chapter 67 EMTH-MULDP: Double Precision Multiplication . . . . . . . . . .395Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 396Representation: EMTH - MULDP - Double Precision Math - Multiplication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 397Parameter Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 399

Chapter 68 EMTH-MULFP: Floating Point Multiplication . . . . . . . . . . . . .401Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 402Representation: EMTH - MULFP - Floating Point - Multiplication . . . . . . . . . . . 403Parameter Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 404

Chapter 69 EMTH-MULIF: Integer x Floating Point Multiplication . . . . . .405Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 406Representation: EMTH - MULIF - Integer Multiplied by Floating Point . . . . . . . 407Parameter Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 409

Chapter 70 EMTH-PI: Load the Floating Point Value of "Pi" . . . . . . . . . .411Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 412Representation: EMTH - PI - Floating Point Math - Load the Floating Point Value of PI. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 413Parameter Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 415


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Chapter 71 EMTH-POW: Raising a Floating Point Number to an Integer Power . . . . . . . . . . . . . . . . . . . . . . . . . . 417Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 418Representation: EMTH - POW - Raising a Floating Point Number to an Integer Power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 419Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 421

Chapter 72 EMTH-SINE: Floating Point Sine of an Angle (in Radians) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 423Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 424Representation: EMTH - SINE - Floating Point Math - Sine of an Angle (in Radians) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 425Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 427

Chapter 73 EMTH-SQRFP: Floating Point Square Root. . . . . . . . . . . . . . 429Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 430Representation: EMTH - SQRFP - Square Root . . . . . . . . . . . . . . . . . . . . . . . . 431Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 433

Chapter 74 EMTH-SQRT: Floating Point Square Root . . . . . . . . . . . . . . . 435Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 436Representation: EMTH - SQRT - Square Root . . . . . . . . . . . . . . . . . . . . . . . . . 437Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 439

Chapter 75 EMTH-SQRTP: Process Square Root. . . . . . . . . . . . . . . . . . . 441Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 442Representation: EMTH - SQRTP - Double Precision Math - Process Square Root. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 443Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 445Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 446

Chapter 76 EMTH-SUBDP: Double Precision Subtraction . . . . . . . . . . . 447Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 448Representation: EMTH - SUBDP - Double Precision Math - Subtraction . . . . . 449Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 451

Chapter 77 EMTH-SUBFI: Floating Point - Integer Subtraction . . . . . . . 453Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 454Representation: EMTH - SUBFI - Floating Point minus Integer. . . . . . . . . . . . . 455Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 456

Chapter 78 EMTH-SUBFP: Floating Point Subtraction . . . . . . . . . . . . . . 457Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 458Representation: EMTH - SUBFP - Floating Point - Subtraction. . . . . . . . . . . . . 459Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 460


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Chapter 79 EMTH-SUBIF: Integer - Floating Point Subtraction . . . . . . . .461Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 462Representation: EMTH - SUBIF - Integer minus Floating Point . . . . . . . . . . . . 463Parameter Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 464

Chapter 80 EMTH-TAN: Floating Point Tangent of an Angle (in Radians) . . . . . . . . . . . . . . . . . . . . . .465Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 466Representation: EMTH - TAN - Tangent of an Angle (in Radians) . . . . . . . . . . 467Parameter Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 468

Chapter 81 ESI: Support of the ESI Module. . . . . . . . . . . . . . . . . . . . . . . .469Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 470Representation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 471Parameter Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 472READ ASCII Message (Subfunction 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 475WRITE ASCII Message (Subfunction 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 479GET DATA (Subfunction 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 480PUT DATA (Subfunction 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 482ABORT (Middle Input ON). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 486Run Time Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 487

Chapter 82 EUCA: Engineering Unit Conversion and Alarms . . . . . . . . .489Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 490Representation: EUCA - Engineering Unit and Alarm. . . . . . . . . . . . . . . . . . . . 491Parameter Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 492Examples. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 494

Part IV Instruction Descriptions (F to N) . . . . . . . . . . . . . . . . . 501

Chapter 83 FIN: First In . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .503Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 504Representation: FIN - First in . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 505Parameter Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 506

Chapter 84 FOUT: First Out. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .507Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 508Representation: FOUT - First Out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 509Parameter Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 511

Chapter 85 FTOI: Floating Point to Integer . . . . . . . . . . . . . . . . . . . . . . . .513Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 514Representation: FTOI - Floating Point to Integer Conversion . . . . . . . . . . . . . . 515


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Chapter 86 GD92 - Gas Flow Function Block . . . . . . . . . . . . . . . . . . . . . . 517Short Description: GD92 - Gas Flow Function Block . . . . . . . . . . . . . . . . . . . . 518Representation: GD92 - Gas Flow Function Block . . . . . . . . . . . . . . . . . . . . . . 519Parameter Description - Inputs: GD92 - Gas Flow Function Block . . . . . . . . . . 521Parameter Description - Outputs: GD92 - Gas Flow Function Block . . . . . . . . . 528Parameter Description - Optional Outputs: GD92 - Gas Flow Function Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 529

Chapter 87 GFNX AGA#3 ‘85 and NX19 ‘68 Gas Flow Function Block. . 531Short Description: GFNX - Gas Flow Function Block . . . . . . . . . . . . . . . . . . . . 532Representation: GFNX - Gas Flow Function Block . . . . . . . . . . . . . . . . . . . . . . 533Parameter Description - Inputs: GFNX - Gas Flow Function Block . . . . . . . . . . 535Parameter Description - Outputs: GFNX - Gas Flow Function Block . . . . . . . . 542Parameter Description - Optional Outputs: GFNX - Gas Flow Function Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 543

Chapter 88 GG92 AGA #3 1992 Gross Method Gas Flow Function Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . 545Short Description: GG92 - Gas Flow Function Block. . . . . . . . . . . . . . . . . . . . . 546Representation: GG92 - Gas Flow Function Block . . . . . . . . . . . . . . . . . . . . . . 547Parameter Description - Inputs: GG92 - Gas Flow Function Block . . . . . . . . . . 549Parameter Description - Outputs: GG92 - Gas Flow Function Block. . . . . . . . . 555Parameter Description - Optional Outputs: GG92 - Gas Flow Function Block . 556

Chapter 89 GM92 AGA #3 and #8 1992 Detail Method Gas Flow Function Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . 557Short Description: GM92 - Gas Flow Function Block . . . . . . . . . . . . . . . . . . . . 558Representation: GM92 - Gas Flow Function Block . . . . . . . . . . . . . . . . . . . . . . 559Parameter Description - Inputs: GM92 - Gas Flow Function Block . . . . . . . . . . 561Parameter Description - Outputs: GM92 - Gas Flow Function Block. . . . . . . . . 568Parameter Description - Optional Outputs: GM92 - Gas Flow Function Block . 569

Chapter 90 G392 AGA #3 1992 Gas Flow Function Block . . . . . . . . . . . . 571Short Description: G392 - Gas Flow Function Block . . . . . . . . . . . . . . . . . . . . . 572Representation: G392 - Gas Flow Function Block. . . . . . . . . . . . . . . . . . . . . . . 573Parameter Description - Inputs: G392 - Gas Flow Function Block . . . . . . . . . . 575Parameter Description - Outputs: G392 - Gas Flow Function Block . . . . . . . . . 580Parameter Description - Optional Outputs: G392 - Gas Flow Function Block . . 581

Chapter 91 HLTH: History and Status Matrices . . . . . . . . . . . . . . . . . . . . 583Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 584Representation: HLTH - System Health. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 585Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 586Parameter Description Top Node (History Matrix) . . . . . . . . . . . . . . . . . . . . . . . 587Parameter Description Middle Node (Status Matrix) . . . . . . . . . . . . . . . . . . . . . 592Parameter Description Bottom Node (Length). . . . . . . . . . . . . . . . . . . . . . . . . . 596


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Chapter 92 HSBY - Hot Standby . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .597Short Description: HSBY - Hot Standby . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 598Representation: HSBY - Hot Standby . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 599Parameter Description Top Node: HSBY - Hot Standby. . . . . . . . . . . . . . . . . . 601Parameter Description Middle Node: HSBY - Hot Standby. . . . . . . . . . . . . . . . 602

Chapter 93 IBKR: Indirect Block Read . . . . . . . . . . . . . . . . . . . . . . . . . . . .603Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 604Representation: IBKR - Indirect Block Read . . . . . . . . . . . . . . . . . . . . . . . . . . . 605

Chapter 94 IBKW: Indirect Block Write . . . . . . . . . . . . . . . . . . . . . . . . . . .607Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 608Representation: IBKW - Indirect Block Write. . . . . . . . . . . . . . . . . . . . . . . . . . . 609

Chapter 95 ICMP: Input Compare . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .611Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 612Representation: ICMP - Input Compare . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 613Parameter Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 614Cascaded DRUM/ICMP Blocks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 616

Chapter 96 ID: Interrupt Disable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .617Short Description: ID - Interrupt Disable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 618Representation: ID - Interrupt Disable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 619Parameter Description: ID - Interrupt Disable . . . . . . . . . . . . . . . . . . . . . . . . . . 620

Chapter 97 IE: Interrupt Enable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .621Short Description: IE - Interrupt Enable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 622Representation: IE - Interrupt Enable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 623Parameter Description: IE - Interrupt Enable . . . . . . . . . . . . . . . . . . . . . . . . . . 624

Chapter 98 IMIO: Immediate I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .625Short Description: IMIO - Immediate I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 626Representation: IMIO - Immediate I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 627Parameter Description: IMIO - Immediate I/O. . . . . . . . . . . . . . . . . . . . . . . . . . 628Run Time Error Handling: IMIO - Immediate I/O. . . . . . . . . . . . . . . . . . . . . . . . 630

Chapter 99 IMOD: Interrupt Module Instruction . . . . . . . . . . . . . . . . . . . .631Short Description: IMOD - Interrupt Module . . . . . . . . . . . . . . . . . . . . . . . . . . . 632Representation: IMOD - Interrupt Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 633Parameter Description: IMOD - Interrupt Module . . . . . . . . . . . . . . . . . . . . . . . 635

Chapter 100 ITMR: Interrupt Timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .639Short Description: ITMR - Interval Timer Interrupt . . . . . . . . . . . . . . . . . . . . . . 640Representation: ITMR - Interval Timer Interrupt . . . . . . . . . . . . . . . . . . . . . . . . 641Parameter Description: ITMR - Interval Timer Interrupt . . . . . . . . . . . . . . . . . . 643


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Chapter 101 ITOF: Integer to Floating Point . . . . . . . . . . . . . . . . . . . . . . . . 645Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 646Representation: ITOF - integer to Floating Point Conversion . . . . . . . . . . . . . . 647

Chapter 102 JSR: Jump to Subroutine . . . . . . . . . . . . . . . . . . . . . . . . . . . . 649Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 650Representation: JSR - Jump to Subroutine . . . . . . . . . . . . . . . . . . . . . . . . . . . . 651

Chapter 103 LAB: Label for a Subroutine . . . . . . . . . . . . . . . . . . . . . . . . . . 653Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 654Representation: LAB - Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 655Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 656

Chapter 104 LOAD: Load Flash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 657Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 658Representation: LOAD - Load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 659Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 660

Chapter 105 MAP 3: MAP Transaction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 661Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 662Representation: MAP 3 - Map Transaction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 663Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 664

Chapter 106 MATH - Integer Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . 669Short Description: MATH - Integer Operations - Decimal Square Root, Process Square Root, Logarithm (base 10), and Antilogarithm (base 10) . . . . . . . . . . . . . . . . . . . . . . 670Representation: MATH - Integer Operations - Decimal Square Root, Process Square Root, Logarithm (base 10), and Antilogarithm (base 10) . . . . . . . . . . . . . . . . . . . . . . 671

Chapter 107 MBIT: Modify Bit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 677Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 678Representation: MBIT - Logical Bit Modify. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 679Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 680

Chapter 108 MBUS: MBUS Transaction . . . . . . . . . . . . . . . . . . . . . . . . . . . 681Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 682Representation: MBUS - Modbus II Transfer. . . . . . . . . . . . . . . . . . . . . . . . . . . 683Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 684The MBUS Get Statistics Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 686

Chapter 109 MRTM: Multi-Register Transfer Module . . . . . . . . . . . . . . . . . 691Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 692Representation: MRTM - Multi-Register Transfer Module . . . . . . . . . . . . . . . . . 693Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 694


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Chapter 110 MSPX (Seriplex) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .697Short Description: MSPX (Seriplex) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 698Representation: MSPX (Seriplex) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 699

Chapter 111 MSTR: Master . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .701Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 703984LL MSTR Function Block. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 704Parameter Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 707Write MSTR Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 711READ MSTR Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 713Get Local Statistics MSTR Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 715Clear Local Statistics MSTR Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 717Write Global Data MSTR Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 719Read Global Data MSTR Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 720Get Remote Statistics MSTR Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 721Clear Remote Statistics MSTR Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 723Peer Cop Health MSTR Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 725Reset Option Module MSTR Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 728Read CTE (Config Extension Table) MSTR Operation . . . . . . . . . . . . . . . . . . . 729Write CTE (Config Extension Table) MSTR Operation . . . . . . . . . . . . . . . . . . . 731Modbus Plus Network Statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 733TCP/IP Ethernet Statistics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 738Run Time Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 739Modbus Plus and SY/MAX Ethernet Error Codes. . . . . . . . . . . . . . . . . . . . . . . 740SY/MAX-specific Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 742TCP/IP Ethernet Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 744CTE Error Codes for SY/MAX and TCP/IP Ethernet. . . . . . . . . . . . . . . . . . . . . 747

Chapter 112 MU16: Multiply 16 Bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .747Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 748Representation: MU16 - 16-Bit Multiplication . . . . . . . . . . . . . . . . . . . . . . . . . . 749

Chapter 113 MUL: Multiply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .751Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 752Representation: MUL - Single Precision Multiplication . . . . . . . . . . . . . . . . . . . 753Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 754

Chapter 114 NBIT: Bit Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .755Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 756Representation: NBIT - Normal Bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 757

Chapter 115 NCBT: Normally Closed Bit . . . . . . . . . . . . . . . . . . . . . . . . . . .759Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 760Representation: NCBT - Bit Normally Closed . . . . . . . . . . . . . . . . . . . . . . . . . . 761


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Chapter 116 NOBT: Normally Open Bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 763Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 764Representation: NOBT - Bit Normally Open . . . . . . . . . . . . . . . . . . . . . . . . . . . 765

Chapter 117 NOL: Network Option Module for Lonworks . . . . . . . . . . . . . 767Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 768Representation: NOL - Network Option Module for Lonworks. . . . . . . . . . . . . . 769Detailed Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 770

Part V Instruction Descriptions (O to Q) . . . . . . . . . . . . . . . . . .773

Chapter 118 OR: Logical OR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 775Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 776Representation: OR - Logical Or . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 777Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 779

Chapter 119 PCFL: Process Control Function Library . . . . . . . . . . . . . . . 781Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 782Representation: PCFL - Process Control Function Library . . . . . . . . . . . . . . . . 783Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 784

Chapter 120 PCFL-AIN: Analog Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 787Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 788Representation: PCFL - AIN - Convert Inputs to Scaled Engineering Units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 789Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 790

Chapter 121 PCFL-ALARM: Central Alarm Handler . . . . . . . . . . . . . . . . . . 793Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 794Representation: PCFL - ALRM - Central Alarm Handler for a P(v) Input. . . . . . 795Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 796

Chapter 122 PCFL-AOUT: Analog Output . . . . . . . . . . . . . . . . . . . . . . . . . . 799Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 800Representation: PCFL - AOUT - Convert Outputs to Values in the 0 through 4095 Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 801Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 802

Chapter 123 PCFL-AVER: Average Weighted Inputs Calculate . . . . . . . . 803Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 804Representation: PCFL - AVER - Average Weighted Inputs. . . . . . . . . . . . . . . . 805Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 806

Chapter 124 PCFL-CALC: Calculated preset formula . . . . . . . . . . . . . . . . 809Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 810Representation: PCFL - CALC - Calculate Present Formula. . . . . . . . . . . . . . . 811Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 812


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Chapter 125 PCFL-DELAY: Time Delay Queue . . . . . . . . . . . . . . . . . . . . . .815Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 816Representation: PCFL - DELY - Time Delay Queue. . . . . . . . . . . . . . . . . . . . . 817Parameter Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 818

Chapter 126 PCFL-EQN: Formatted Equation Calculator. . . . . . . . . . . . . .821Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 822Representation: PCFL - EQN - Formatted Equation Calculator . . . . . . . . . . . . 823Parameter Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 824

Chapter 127 PCFL-INTEG: Integrate Input at Specified Interval . . . . . . . .827Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 828Representation: PCFL - INTG - Integrate Input at Specified Interval . . . . . . . . 829Parameter Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 830

Chapter 128 PCFL-KPID: Comprehensive ISA Non Interacting PID . . . . .831Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 832Representation: PCFL - KPID - Comprehensive ISA Non-Interacting Proportional-Integral-Derivative. . . . . . . . . . . . . . . . . . . . . . . . . . . . 833Parameter Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 834

Chapter 129 PCFL-LIMIT: Limiter for the Pv . . . . . . . . . . . . . . . . . . . . . . . .837Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 838Representation: PCFL - LIMIT - Limiter for the P(v) . . . . . . . . . . . . . . . . . . . . . 839Parameter Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 840

Chapter 130 PCFL-LIMV: Velocity Limiter for Changes in the Pv . . . . . . .841Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 842Representation: PCFL - LIMV - Velocity Limiter for Changes in the P(v) . . . . . 843Parameter Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 844

Chapter 131 PCFL-LKUP: Look-up Table. . . . . . . . . . . . . . . . . . . . . . . . . . .845Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 846Representation: PCFL - LKUP - Look-up Table . . . . . . . . . . . . . . . . . . . . . . . . 847Parameter Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 848

Chapter 132 PCFL-LLAG: First-order Lead/Lag Filter . . . . . . . . . . . . . . . .851Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 852Representation: PCFL - LLAG - First-Order Lead/Lag Filter. . . . . . . . . . . . . . . 853Parameter Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 854

Chapter 133 PCFL-MODE: Put Input in Auto or Manual Mode. . . . . . . . . .855Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 856Representation: PCFL - MODE - Put Input in Auto or Manual Mode . . . . . . . . 857Parameter Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 858


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Chapter 134 PCFL-ONOFF: ON/OFF Values for Deadband . . . . . . . . . . . . 859Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 860Representation: PCFL - ONOFF - Specifies ON/OFF Values for Deadband. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 861Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 862

Chapter 135 PCFL-PI: ISA Non Interacting PI . . . . . . . . . . . . . . . . . . . . . . . 865Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 866Representation: PCFL - PI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 867Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 868

Chapter 136 PCFL-PID: PID Algorithms . . . . . . . . . . . . . . . . . . . . . . . . . . . 871Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 872Representation: PCFL - PID - Algorithms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 873Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 874

Chapter 137 PCFL-RAMP: Ramp to Set Point at a Constant Rate . . . . . . 877Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 878Representation: PCFL - RAMP - Ramp to Set Point at Constant Rate . . . . . . . 879Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 880

Chapter 138 PCFL-RATE: Derivative Rate Calculation over a Specified Timeme. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 883Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 884Representation: PCFL - RATE - Derivative Rate Calculation Over a Specified Time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 885Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 886

Chapter 139 PCFL-RATIO: Four Station Ratio Controller . . . . . . . . . . . . . 887Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 888Representation: PCFL - RATIO - Four-Station Ratio Controller . . . . . . . . . . . . 889Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 890

Chapter 140 PCFL-RMPLN: Logarithmic Ramp to Set Point . . . . . . . . . . . 893Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 894Representation: PCFL - RMPLN - Logarithmic Ramp to Set Point . . . . . . . . . . 895Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 896

Chapter 141 PCFL-SEL: Input Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . 897Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 898Representation: PCFL - SEL - High/Low/Average Input Selection . . . . . . . . . . 899Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 900

Chapter 142 PCFL-TOTAL: Totalizer for Metering Flow . . . . . . . . . . . . . . 903Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 904Representation: PCFL - TOTAL - Totalizer for Metering Flow. . . . . . . . . . . . . . 905Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 906


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Chapter 143 PEER: PEER Transaction. . . . . . . . . . . . . . . . . . . . . . . . . . . . .909Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 910Representation: PEER - Modbus II Identical Transfer . . . . . . . . . . . . . . . . . . . 911Parameter Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 912

Chapter 144 PID2: Proportional Integral Derivative . . . . . . . . . . . . . . . . . .913Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 914Representation: PID2 - Proportional/Integral/Derivative . . . . . . . . . . . . . . . . . . 915Detailed Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 916Parameter Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 919Run Time Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 924

Part VI Instruction Descriptions (R to Z) . . . . . . . . . . . . . . . . . 927

Chapter 145 R --> T: Register to Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . .929Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 930Representation: R T - Register to Table Move . . . . . . . . . . . . . . . . . . . . . . . 931Parameter Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 932

Chapter 146 RBIT: Reset Bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .933Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 934Representation: RBIT - Reset Bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 935

Chapter 147 READ: Read. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .937Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 938Representation: READ - Read ASCII Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . 939Parameter Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 940

Chapter 148 RET: Return from a Subroutine. . . . . . . . . . . . . . . . . . . . . . . .943Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 944Representation: RET - Return to Scheduled Logic . . . . . . . . . . . . . . . . . . . . . . 945

Chapter 149 RTTI - Register to Input Table . . . . . . . . . . . . . . . . . . . . . . . . .947Short Description: RTTI - Register to Input Table . . . . . . . . . . . . . . . . . . . . . . . 948Representation: RTTI - Register to Input Table . . . . . . . . . . . . . . . . . . . . . . . . 949

Chapter 150 RTTO - Register to Output Table. . . . . . . . . . . . . . . . . . . . . . .951Short Description: RTTO - Register to Output Table. . . . . . . . . . . . . . . . . . . . . 952Representation: RTTO - Register to Output Table . . . . . . . . . . . . . . . . . . . . . . 953

Chapter 151 RTU - Remote Terminal Unit . . . . . . . . . . . . . . . . . . . . . . . . . .955Short Description: RTU - Remote Terminal Unit . . . . . . . . . . . . . . . . . . . . . . . . 956Representation: RTU - Remote Terminal Unit . . . . . . . . . . . . . . . . . . . . . . . . . 957


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Chapter 152 SAVE: Save Flash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 961Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 962Representation: SAVE - Save . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 963Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 964

Chapter 153 SBIT: Set Bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 965Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 966Representation: SBIT - Set Bit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 967

Chapter 154 SCIF: Sequential Control Interfaces. . . . . . . . . . . . . . . . . . . . 969Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 970Representation: SCIF - Sequential Control Interface. . . . . . . . . . . . . . . . . . . . . 971Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 973

Chapter 155 SENS: Sense . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 975Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 976Representation: SENS - Logical Bit-Sense . . . . . . . . . . . . . . . . . . . . . . . . . . . . 977Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 978

Chapter 156 Shorts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 979Short Description: Shorts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 980Representation: Shorts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 981

Chapter 157 SKP - Skipping Networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . 983Short Description: SKP - Skipping Networks . . . . . . . . . . . . . . . . . . . . . . . . . . . 984Representation: SKP - Skipping Networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . 985

Chapter 158 SRCH: Search. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 987Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 988Representation: SRCH - Search . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 989Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 991

Chapter 159 STAT: Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 993Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 994Representation: STAT - Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 995Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 996Description of the Status Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 997Controller Status Words 1 - 11 for Quantum and Momentum . . . . . . . . . . . . . 1001I/O Module Health Status Words 12 - 20 for Momentum. . . . . . . . . . . . . . . . . 1006I/O Module Health Status Words 12 - 171 for Quantum . . . . . . . . . . . . . . . . . 1008Communication Status Words 172 - 277 for Quantum . . . . . . . . . . . . . . . . . . 1010Controller Status Words 1 - 11 for TSX Compact and Atrium . . . . . . . . . . . . . 1016I/O Module Health Status Words 12 - 15 for TSX Compact. . . . . . . . . . . . . . . 1019Global Health and Communications Retry Status Words 182 ... 184 for TSX Compact. . . . . . . . . . . . . . . . . . . . . . . . . . . 1020


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Chapter 160 SU16: Subtract 16 Bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1021Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1022Representation: SU16 - 16-bit Subtraction . . . . . . . . . . . . . . . . . . . . . . . . . . . 1023

Chapter 161 SUB: Subtraction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1025Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1026Representation: SUB - Subtraction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1027

Chapter 162 SWAP - VME Bit Swap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1029Short Description: SWAP - VME Bit Swap . . . . . . . . . . . . . . . . . . . . . . . . . . . 1030Representation: SWAP - VME Bit Swap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1031

Chapter 163 TTR - Table to Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1033Short Description: TTR - Table to Register . . . . . . . . . . . . . . . . . . . . . . . . . . . 1034Representation: TTR - Table to Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1035

Chapter 164 T --> R Table to Register . . . . . . . . . . . . . . . . . . . . . . . . . . . .1037Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1038Representation: T R - Table to Register Move . . . . . . . . . . . . . . . . . . . . . . 1039Parameter Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1041

Chapter 165 T --> T: Table to Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1043Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1044Representation: T T - Table to Table Move . . . . . . . . . . . . . . . . . . . . . . . . 1045Parameter Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1047

Chapter 166 T.01 Timer: One Hundredth Second Timer. . . . . . . . . . . . . .1049Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1050Representation: T.01 - One Hundredth of a Second Timer. . . . . . . . . . . . . . . 1051

Chapter 167 T0.1 Timer: One Tenth Second Timer . . . . . . . . . . . . . . . . . .1053Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1054Representation: T0.1 - One Tenth of a Second Timer . . . . . . . . . . . . . . . . . . 1055

Chapter 168 T1.0 Timer: One Second Timer . . . . . . . . . . . . . . . . . . . . . . .1057Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1058Representation: T1.0 - One Second Timer . . . . . . . . . . . . . . . . . . . . . . . . . . . 1059

Chapter 169 T1MS Timer: One Millisecond Timer. . . . . . . . . . . . . . . . . . .1061Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1062Representation: T1MS - One Millisecond Timer . . . . . . . . . . . . . . . . . . . . . . . 1063Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1064

Chapter 170 TBLK: Table to Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1067Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1068Representation: TBLK - Table-to-Block Move. . . . . . . . . . . . . . . . . . . . . . . . . 1069Parameter Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1071


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Chapter 171 TEST: Test of 2 Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1073Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1074Representation: TEST - Test of 2 Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1075

Chapter 172 UCTR: Up Counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1077Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1078Representation: UCTR - Up Counter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1079

Chapter 173 VMER - VME Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1081Short Description: VMER - VME Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1082Representation: VMER - VME Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1083Parameter Description: VMER - VME Read . . . . . . . . . . . . . . . . . . . . . . . . . . 1084

Chapter 174 VMEW - VME Write. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1085Short Description: VMEW - VME Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1086Representation: VMEW - VME Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1087Parameter Description: VMEW - VME Write . . . . . . . . . . . . . . . . . . . . . . . . . . 1089

Chapter 175 WRIT: Write. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1091Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1092Representation: WRIT - Write ASCII Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1093Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1094

Chapter 176 XMIT - Transmit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1097General Description: XMIT - Transmit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1098XMIT Modbus Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1099

Chapter 177 XMIT Communication Block . . . . . . . . . . . . . . . . . . . . . . . . . 1105Short Description: XMIT Communication Block . . . . . . . . . . . . . . . . . . . . . . . . 1106Representation: XMIT Communication Block . . . . . . . . . . . . . . . . . . . . . . . . . 1107Parameter Description: Middle Node - Communication Control Table . . . . . . 1109Parameter Description: XMIT Communication Block. . . . . . . . . . . . . . . . . . . . 1114Parameter Description: XMIT Communications Block . . . . . . . . . . . . . . . . . . . 1116

Chapter 178 XMIT Port Status Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1117Short Description: XMIT Port Status Block . . . . . . . . . . . . . . . . . . . . . . . . . . . 1118Representation: XMIT Port Status Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1119Parameter Description: Middle Node - XMIT Conversion Block . . . . . . . . . . . 1121

Chapter 179 XMIT Conversion Block. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1125Short Description: XMIT Conversion Block . . . . . . . . . . . . . . . . . . . . . . . . . . . 1126Representation: XMIT Conversion Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1127Parameter Description: XMIT Conversion Block . . . . . . . . . . . . . . . . . . . . . . . 1129

Chapter 180 XMRD: Extended Memory Read . . . . . . . . . . . . . . . . . . . . . . 1133Short Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1134Representation: XMRD - Extended Memory Read . . . . . . . . . . . . . . . . . . . . . 1135Parameter Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1136


xxv

Chapter 181 XMWT: Extended Memory Write . . . . . . . . . . . . . . . . . . . . . .1139Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1140Representation: XMWT - Extended Memory Write . . . . . . . . . . . . . . . . . . . . . 1141Parameter Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1142

Chapter 182 XOR: Exclusive OR. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1145Short Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1146Representation: XOR - Boolean Exclusive Or. . . . . . . . . . . . . . . . . . . . . . . . . 1147Parameter Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1149

Appendices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1151Optimizing RIO Performance with the Segment Scheduler . . . . . . . . . . . . . . 1151

Appendix A Appendix A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1153Optimizing RIO Peformance with the Segment Scheduler . . . . . . . . . . . . . . . 1153Scan Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1154How to Measure Scan Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1158Maximizing Throughput . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1159Order of Solve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1161Using Segment Scheduler to Improve Critical I/O Throughput . . . . . . . . . . . . 1162Using Segment Scheduler to Improve System Performance . . . . . . . . . . . . . 1164Using Segment Scheduler to Improve Communication Port Servicing . . . . . . 1165Sweep Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1166

Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxxi

Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . lv


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§Safety Information

NOTICE Read these instructions carefully, and look at the equipment to become familiar with the device before trying to install, operate, or maintain it. The following special messages may appear throughout this documentation or on the equipment to warn of potential hazards or to call attention to information that clarifies or simplifies a procedure.

PLEASE NOTE Electrical equipment should be installed, operated, serviced, and maintained only by qualified personnel. No responsibility is assumed by Schneider Electric for any consequences arising out of the use of this material.

© 2006 Schneider Electric. All Rights Reserved.

The addition of this symbol to a Danger or Warning safety label indicatesthat an electrical hazard exists, which will result in personal injury if theinstructions are not followed.

This is the safety alert symbol. It is used to alert you to potential personalinjury hazards. Obey all safety messages that follow this symbol to avoidpossible injury or death.

DANGER indicates an imminently hazardous situation, which, if not avoided, will result in death or serious injury.

DANGER

WARNING indicates a potentially hazardous situation, which, if not avoided, can result in death, serious injury, or equipment damage.

WARNING

CAUTION indicates a potentially hazardous situation, which, if not avoided, can result in injury or equipment damage.

CAUTION


Safety Information

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043505766 4/2006 xxix

About the Book

At a Glance

Document Scope This documentation will help you configure LL 984 instructions to any controller using ProWorx NxT, ProWorx 32 or Modbus Plus. Examples in this book are used with ProWorx 32. For LL 984 using Concept software, see Concept Block Library LL984 (840USE49600).

Validity Note The data and illustrations found in this book are not binding. We reserve the right to modify our products in line with our policy of continuous product development. The information in this document is subject to change without notice and should not be construed as a commitment by Schneider Electric.

Related Documents

Title of Documentation Reference Number

Concept Block Library LL 984 840 USE 496


About the Book

xxx 043505766 4/2006

Product Related Warnings

Schneider Electric assumes no responsibility for any errors that may appear in this document. If you have any suggestions for improvements or amendments or have found errors in this publication, please notify us.

No part of this document may be reproduced in any form or by any means, electronic or mechanical, including photocopying, without express written permission of Schneider Electric.

All pertinent state, regional, and local safety regulations must be observed when installing and using this product. For reasons of safety and to ensure compliance with documented system data, only the manufacturer should perform repairs to components.

When controllers are used for applications with technical safety requirements, please follow the relevant instructions.

Failure to use Schneider Electric software or approved software with our hardware products may result in injury, harm, or improper operating results.

Failure to observe this product related warning can result in injury or equipment damage.

User Comments We welcome your comments about this document. You can reach us by e-mail at [email protected]


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IIIInstruction Descriptions (E)

At a Glance

Introduction In this part all instruction descriptions start with E.

What's in this Part?

This part contains the following chapters:

Chapter Chapter Name Page

41 EARS - Event/Alarm Recording System 251

42 EMTH: Extended Math 259

43 EMTH-ADDDP: Double Precision Addition 265

44 EMTH-ADDFP: Floating Point Addition 271

45 EMTH-ADDIF: Integer + Floating Point Addition 275

46 EMTH-ANLOG: Base 10 Antilogarithm 279

47 EMTH-ARCOS: Floating Point Arc Cosine of an Angle (in Radians) 285

48 EMTH-ARSIN: Floating Point Arcsine of an Angle (in Radians) 291

49 EMTH-ARTAN: Floating Point Arc Tangent of an Angle (in Radians)

295

50 EMTH-CHSIN: Changing the Sign of a Floating Point Number 301

51 EMTH-CMPFP: Floating Point Comparison 307

52 EMTH-CMPIF: Integer-Floating Point Comparison 313

53 EMTH-CNVDR: Floating Point Conversion of Degrees to Radians 319

54 EMTH-CNVFI: Floating Point to Integer Conversion 325

55 EMTH-CNVIF: Integer-to-Floating Point Conversion 331

56 EMTH-CNVRD: Floating Point Conversion of Radians to Degrees 337

57 EMTH-COS: Floating Point Cosine of an Angle (in Radians) 343

58 EMTH-DIVDP: Double Precision Division 347

59 EMTH-DIVFI: Floating Point Divided by Integer 353

60 EMTH-DIVFP: Floating Point Division 357


Instruction Descriptions (E)

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61 EMTH-DIVIF: Integer Divided by Floating Point 361

62 EMTH-ERLOG: Floating Point Error Report Log 365

63 EMTH-EXP: Floating Point Exponential Function 371

64 EMTH-LNFP: Floating Point Natural Logarithm 377

65 EMTH-LOG: Base 10 Logarithm 383

66 EMTH-LOGFP: Floating Point Common Logarithm 389

67 EMTH-MULDP: Double Precision Multiplication 395

68 EMTH-MULFP: Floating Point Multiplication 401

69 EMTH-MULIF: Integer x Floating Point Multiplication 405

70 EMTH-PI: Load the Floating Point Value of "Pi" 411

71 EMTH-POW: Raising a Floating Point Number to an Integer Power 417

72 EMTH-SINE: Floating Point Sine of an Angle (in Radians) 423

73 EMTH-SQRFP: Floating Point Square Root 429

74 EMTH-SQRT: Floating Point Square Root 435

75 EMTH-SQRTP: Process Square Root 441

76 EMTH-SUBDP: Double Precision Subtraction 447

77 EMTH-SUBFI: Floating Point - Integer Subtraction 453

78 EMTH-SUBFP: Floating Point Subtraction 457

79 EMTH-SUBIF: Integer - Floating Point Subtraction 461

80 EMTH-TAN: Floating Point Tangent of an Angle (in Radians) 465

81 ESI: Support of the ESI Module 469

82 EUCA: Engineering Unit Conversion and Alarms 489

Chapter Chapter Name Page


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41EARS - Event/Alarm Recording System

At A Glance

Introduction This chapter describes the instruction EARS.

What's in this Chapter?

This chapter contains the following topics:

Topic Page

Short Description: EARS - Event/Alarm Recording System 252

Representation: EARS - Event/Alarm Recording System 253

Parameter Description: EARS - Event/Alarm Recording System 255


EARS - Event/Alarm Recording System

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Short Description: EARS - Event/Alarm Recording System

Function Description

The EARS block is loaded to a PLC used in an alarm/event recording system. An EARS system requires that the PLC work in conjunction with a human-machine interface (HMI) host device that runs a special offline software package. The PLC monitors a specified group of events for changes in state and logs change data into a buffer. The data is then removed by the host over a high speed network such as Modbus Plus. The two devices comply with a defined handshake protocol that ensures that all data detected by the PLC is accurately represented in the host.

PLC Functions in an Event/Alarm Recording System

When a PLC is employed in an EARS environment, it is set up to maintain and monitor two tables of 4xxxx registers, one containing the current state of a set of user-defined events and one containing the history of the most recent state of these events. Event states are stored as bit representations in the 4xxxx registers; a bit value of 1 signifying an ON state and a bit value of 0 signifying an OFF state. Each table can contain up to 62 registers, allowing you to monitor the states of up to 992 events.

When the PLC detects a change between the current state bit and the history bit for an event, the EARS instruction prepares a two word message and places it in a buffer where they can be off-loaded to a host HMI.

This message contains:A time stamp representing the time span from midnight to 24:00 hours in tenths of a secondA transition flag indicating that the event is either a positive or negative transition with respect to the event stateA number indicating which event has occurred

Host to PLC Interaction

The host HMI device must be able to read and write PLC data registers via the Modbus protocol. A handshake protocol maintains integrity between the host and the circular buffer running in the PLC. This enables the host to receive events asynchronously from the buffer at a speed suitable to the host while the PLC detects event changes and load the buffer at its faster scan rate.



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Representation: EARS - Event/Alarm Recording System

Symbol Representation of the instruction

Parameter Description

Description of the instruction’s parameters

CONTROL INPUT

RESET

QUEUE NOT EMPTY

CLEAR TO SEND

QUEUE FULL

state table pointer / histo-

ry table

buffer table

EARS

length

Queue Info and Queue(event/alarmTable length 5+NNN)

Length: 1 - 1000

History table(4xxxx-4xxxx + 63)

Parameters State RAM Reference

Data Type

Meaning

Top input 0x, 1x None ON = Handshake performed (if needed), validation check performed, and EARS operations proceedsOFF = Handshake performed (if needed) and outstanding transactions are completed

Bottom input

0x, 1x None Buffer Reset: Event table and top node pointers cleared to 0

state table pointer / history table(top node)

4x INT, UINT

The 4xxxx register entered in the top node is the first of 64 contiguous registers. The first two registers contain values that specify the location and size of the current state table. (For expanded and detailed information please see p. 255.)The remaining 61 registers are available to store history data. If all the remaining registers are not required for the history table, those registers may be used elsewhere in the program for other purposes, but they will still be found (by a Modbus search) in the top node of the EARS block.



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buffer table(middle node)

4x INT, UINT

The 4xxxx register entered in the middle node is the first in a series of contiguous registers uses as a buffer table. The first five registers are used as follows, and the rest contain the circular buffer. The circular buffer uses an even number of registers in the range 2 through 100. (For expanded and detailed information please see p. 256.)The time stamp is encoded in 20 bits as a binary weighted value that represents the time in an increment of 0.1 s, starting from midnight of the day on which the status change was detected:

1 hour = 3,600 seconds = 36,000 tenths of a second24 hours = 86,400 seconds = 864,000 tenths of a second

Note: The real time clock in the chassis mount controllers has a tenth-of-a-second resolution, but the other 984s have real time clock chips that resolve only to a second. An algorithm is used in EARS to provide a best estimate of tenth-of-a-second resolution; it is accurate in the relative time intervals between events, but it may vary slightly from the real time clock.

length(bottom node)

INT, UINT

The integer value entered in the bottom node is the length - i.e., actual number of registers allocated for the circular buffer. The length can range from 2 through 100. Each event requires two registers for data storage. Therefore, if you wish to trap up to 25 events at any given time in the buffer, assign a length of 50 in the bottom node.

Top output 0x None ON = Data in the bufferPasses power when data is in the queue

Middle output

0x None ON for one scan following communications acknowledgment from hostPasses power for one scan after getting a host response

Bottom output

0x None Buffer full: No events can be added until host off-loads some or until Buffer ResetPasses power when queue is full. No more events can be added


Data Type

Meaning



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Parameter Description: EARS - Event/Alarm Recording System

Overview of This Section

This section provides detailed and expanded information in table form for the top and middle nodes, and the middle node provides further information, which is detailed in three additional tables.

Therefore, there are five tables in this section.Register Table (Top Node)Data Register Table (Middle Node)Status/Error Codes TableEvent-change Data TableBinary Weighted Value Table

Register Table (Top Node)

This is the Register Table for the top node of EARS.

Register Content

4x Indirect pointer to the current state table for example if the register contains a value of 5, then the state table begins at register 40005; the indirect pointer register must be hard-coded by the programmer

4x+1 Contains a value in the range 1 through 62 that specifies the number of registers in the current state table; this value must be hard-coded by the programmer

4x+2 First register of the history table, and the remaining registers allocated to the top node may be used in the table as required; the history table can provide monitoring for as many as 992 contiguous events (if 16 bits in all the 62 available registers are used)



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Data Register Table (Middle Node)

This is the Data Register Table for the middle node of EARS.

Status/Error Codes Table

This is the Status/Error Codes Table for the 4x+4 register of the middle node. The information below provides detailed and expanded information for the 4x+4 register of the middle node. The code number displayed represents an existing condition.

Register Content

4x A value that defines the maximum number of registers the circular buffer may occupy

4x+1 The Q_take pointer - the pointer to the next register where the host will go to remove data

4x+2 The low byte contains the Q_put pointer - the pointer to the register in the circular buffer where the EARS block will begin to place the next state-change data. The high byte contains the last transaction number received.

4x+3 The Q+count is a value indicating the number of words currently in the circular buffer.

4x+4 The 4x+4 register gives Status/Error informationFor an explanation of the codes and the status/error messages that the code represents please see the Status/Error Codes Table below.

4x+5 The 4x+5 registerGives Event-change dataIs the first register in a circular bufferIs where Event-change data are stored

Each change in event status produces two contiguous registers, and those registers are explained in the Event-change Data Table below.

Code Condition

1 Invalid block length

2 Invalid clock request

3 Invalid clock configuration

4 Invalid state length

5 Invalid queue put

6 Invalid queue take

7 Invalid state

8 Invalid queue count

9 Invalid sequence number

10 Count removed

255 Bad clock chip



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Event-change Data Table

When a change occurs in the 4x+5 register, this register then produces two contiguous registers. This section explains how these contiguous registers are used.

Event Data Register 1

The following table describes the Bit Usage.


The following table describes the Bit Usage.

The time stamp is encoded in 20 bits as a binary weighted value that represents the time in an increment of 0.1 s (tenths of a second), starting from midnight of the day on which the status change was detected.

1 hour = 3600 seconds = 36000 tenths of a second24 hours = 86,400 seconds = 864,000 tenths of a second

For expanded and detailed information on binary weighted values for the time stamp see the Binary Weighted Values Table below.

Bit Usage

1 - 4 Four most significant bits of Event Time Stamp

5 Transition Event Type0 = Negative1 = Positive

6 Reserved

7 - 16 Event Number (1 ... 992)

Bit Usage

1 - 16 Sixteen least significant bits of Event Time Stamp

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16



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Binary Weighted Values Table

Event Data Register 1 (Most significant nibble (4 bits))


The following table shows binary weighted values for the time stamp, where n is the relative bit position in the 20-bit time scheme.

2n n 2n n 2n n

1 0 256 8 65536 16

2 1 512 9 131072 17

4 2 1024 10 262144 18

8 3 2048 11 524288 19

16 4 4096 12

32 5 8192 13

64 6 16384 14

128 7 32768 15

Note: The real time clock in chassis mount controllers has a tenth-of-a-second resolution, but the other 984s have real time clock chips that resolve only to a second. An algorithm is used in EARS to provide a best estimate of tenth-of-a-second resolution. The algorithmic estimate is accurate in relative time intervals between events, but the estimate may vary slightly from the real time clock.

19 18 17 16

15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0


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42EMTH: Extended Math

At a Glance

Introduction This chapter describes the instruction EMTH.



Topic Page

Short Description 260

Representation: EMTH - Extended Math Functions 261

Parameter Description 262

Floating Point EMTH Functions 264


EMTH: Extended Math

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Short Description


This instruction accesses a library of double-precision math, square root and logarithm calculations and floating point (FP) arithmetic functions.

The EMTH instruction allows you to select from a library of 38 extended math functions. Each of the functions has an alphabetical indicator of variable subfunctions that can be selected from a pulldown menu in your panel software and appears in the bottom node. EMTH control inputs and outputs are function-dependent.


EMTH: Extended Math

043505766 4/2006 261

Representation: EMTH - Extended Math Functions




EMTH

subfunction

middle node

top nodeTOP INPUT TOP OUTPUT

BOTTOM OUTPUTBOTTOM INPUT

MIDDLE OUTPUTMIDDLE INPUT


Data Type Meaning

Top input 0x, 1x None Depends on the selected EMTH function, see p. 262"

Middle input 0x, 1x None Depends on the selected EMTH function

Bottom input 0x, 1x None Depends on the selected EMTH function

top node 3x, 4x DINT, UDINT, REAL

Two consecutive registers, usually 4x holding registers but, in the integer math cases, either 4x or 3x registers

middle node 4x DINT, UDINT, REAL

Two, four, or six consecutive registers, depending on the function you are implementing.

subfunction(bottom node)

An alphabetical label, identifying the EMTH function, see p. 262"

Top output 0x None Depends on the selected EMTH function, see p. 262"

Middle output 0x None Depends on the selected EMTH function

Bottom output 0x None Depends on the selected EMTH function


EMTH: Extended Math

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Inputs, Outputs and Bottom Node

The implementation of inputs to and outputs from the block depends on the EMTH subfunction you select. An alphabetical indicator of variable subfunctions appears in the bottom node identifing the EMTH function you have chosen from the library.

You will find the EMTH subfunctions in the following tables.Double Precision MathInteger MathFloating Point Math

Subfunctions for Double Precision Math

Double Precision Math

Subfunctions for Integer Math

Integer Math

EMTH Function Subfunction Active Inputs Active Outputs

Addition ADDDP Top Top and Middle

Subtraction SUBDP Top Top, Middle and Bottom

Multiplication MULDP Top Top and Middle

Division DIVDP Top and Middle Top, Middle and Bottom


Square root SQRT Top Top and Middle

Process square root SQRTP Top Top and Middle

Logarithm LOG Top Top and Middle

Antilogarithm ANLOG Top Top and Middle


EMTH: Extended Math

043505766 4/2006 263

Subfunctions for Floating Point Math


Integer-to-FP conversion CNVIF Top Top

Integer + FP ADDIF Top Top

Integer - FP SUBIF Top Top

Integer x FP MULIF Top Top

Integer / FP DIVIF Top Top

FP - Integer SUBFI Top Top

FP / Integer DIVFI Top Top

Integer-FP comparison CMPIF Top Top

FP-to-Integer conversion CNVFI Top Top and Middle

Addition ADDFP Top Top

Subtraction SUBFP Top Top

Multiplication MULFP Top Top

Division DIVFP Top Top

Comparison CMPFP Top Top, Middle and Bottom

Square root SQRFP Top Top

Change sign CHSIN Top Top

Load Value of p PI Top Top

Sine in radians SINE Top Top

Cosine in radians COS Top Top

Tangent in radians TAN Top Top

Arcsine in radians ARSIN Top Top

Arccosine in radians ARCOS Top Top

Arctangent in radians ARTAN Top Top

Radians to degrees CNVRD Top Top

Degrees to radians CNVDR Top Top

FP to an integer power POW Top Top

Exponential function EXP Top Top

Natural log LNFP Top Top

Common log LOGFP Top Top

Report errors ERLOG Top Top and Middle


EMTH: Extended Math

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Floating Point EMTH Functions

Use of Floating Point Functions

To make use of the floating point (FP) capability, the four-digit integer values used in standard math instructions must be converted to the IEEE floating point format. All calculations are then performed in FP format and the results must be converted back to integer format.

The IEEE Floating Point Standard

EMTH floating point functions require values in 32-bit IEEE floating point format. Each value has two registers assigned to it, the eight most significant bits representing the exponent and the other 23 bits (plus one assumed bit) representing the mantissa and the sign of the value.

It is virtually impossible to recognize a FP representation on the programming panel. Therefore, all numbers should be converted back to integer format before you attempt to read them.

Dealing with Negative Floating Point Numbers

Standard integer math calculations do not handle negative numbers explicitly. The only way to identify negative values is by noting that the SUB function block has turned the bottom output ON.

If such a negative number is being converted to floating point, perform the Integer-to-FP conversion (EMTH subfunction CNVIF), then use the Change Sign function (EMTH subfunction CHSIN) to make it negative prior to any other FP calculations.

Note: Floating point calculations have a mantissa precision of 24 bits, which guarantees the accuracy of the seven most significant digits. The accuracy of the eighth digit in an FP calculation can be inexact.


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43EMTH-ADDDP: Double Precision Addition

At a Glance

Introduction This chapter describes the EMTH subfunction EMTH-ADDDP.



Topic Page


Representation: EMTH - ADDDP - Double Precision Math - Addition 267



EMTH-ADDDP: Double Precision Addition

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Short Description


This instruction is a subfunction of the EMTH instruction. It belongs to the category "Double Precision Math."



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Representation: EMTH - ADDDP - Double Precision Math - Addition


EMTH

ADDDP

operand 2 and sum

operand 1ADDS OPERANDS OPERATION SUCCESSFUL

OPERAND OUT OF RANGE OR IN-VALID



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Data Type Meaning

Top input 0x, 1x None ON = adds operands and posts sum in designated registers

operand 1(top node)

4x DINT, UDINT

Operand 1 (first of two contiguous registers)The first of two contiguous 4xxxx registers is entered in the top node. The second 4xxxx register is implied. Operand 1 is stored here. Each register holds a value in the range 0000 through 9999, for a combined double precision value in the range of 0 through 99,999,999. The high-order half of operand 1 is stored in the displayed register, and the low-order half is stored in the implied register.

operand 2 and sum(middle node)

4x DINT, UDINT

Operand 2 and sum (first of sixcontiguous registers)The first of six contiguous 4xxxx registers is entered in the middle node.The remaining five registers are implied:

The displayed register and the first implied register store the high-order and low-order halves of operand 2, respectively, for a combined double precision value in the range 0 through 99,999,999The value stored in the second implied register indicates whether an overflow condition exists (a value of 1 = overflow)The third and fourth implied registers store the high-order and low-order halves of the double precision sum, respectivelyThe fifth implied register is not used in the calculation but must exist in state RAM

ADDDP(bottom node)

Selection of the subfunction ADDDP

Top output 0x None ON = operation successful

Middle output 0x None ON = operand out of range or invalid



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Operand 1 (Top Node)

The first of two contiguous 4x registers is entered in the top node. The second 4x register is implied. Operand 1 is stored here.

Operand 2 and Sum (Middle Node)

The first of six contiguous 4x registers is entered in the middle node. The remaining five registers are implied:

Register Content

Displayed Register stores the low-order half of operand 1Range 0 000 ... 9 999, for a combined double precision value in the range 0 ... 99 999 999

First implied Register stores the high-order half of operand 1Range 0 000 ... 9 999, for a combined double precision value in the range 0 ... 99 999 999

Register Content

Displayed Register stores the low-order half of operand 2, respectively, for a combined double precision value in the range 0 ... 99 999 999

First implied Register stores the high-order half of operand 2, respectively, for a combined double precision value in the range 0 ... 99 999 999

Second implied The value stored in this register indicates whether an overflow condition exists (a value of 1 = overflow)

Third implied Register stores the low-order half of the double precision sum.

Fourth implied Register stores the high-order half of the double precision sum.

Fifth implied Register is not used in the calculation but must exist in state RAM



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44EMTH-ADDFP: Floating Point Addition

At a Glance

Introduction This chapter describes the EMTH subfunction EMTH-ADDFP.



Topic Page


Representation: EMTH - ADDFP - Floating Point Math - Addition 273



EMTH-ADDFP: Floating Point Addition

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Short Description


This instruction is a subfunction of the EMTH instruction. It belongs to the category "Floating Point Math."



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Representation: EMTH - ADDFP - Floating Point Math - Addition




EMTH

ADDFP

value 2 and sum

value 1INITIATES FP ADDI-

TIONOPERATION SUCCESSFUL


Data Type Meaning

Top input 0x, 1x None ON = enables FP addition

value 1(top node)

4x REAL Floating point value 1 (first of two contiguous registers) The first of two contiguous 4xxxx registers is entered in the top node. The second register is implied. FP value 1 in the addition is stored here.

value 2 and sum(middle node)

4x REAL Floating point value 2 and the sum (first of four contiguous registers) The first of four contiguous 4xxxx registers is entered in the middle node. The remaining three registers are implied. FP value 2 is stored in the displayed register and the first implied register. The sum of the addition is stored in FP format in the second and third implied registers.

ADDFP(bottom node)

Selection of the subfunction ADDFP




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Floating Point Value 1 (Top Node)

The first of two contiguous 4x registers is entered in the top node. The second register is implied.

Floating Point Value 2 and Sum (Middle Node)

The first of four contiguous 4x registers is entered in the middle node. The remaining three registers are implied

Register Content

DisplayedFirst implied

Registers store the FP value 1.

Register Content


Registers store the FP value 2.

Second impliedThird implied

Registers store the sum of the addition in FP format.


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45EMTH-ADDIF: Integer + Floating Point Addition

At a Glance

Introduction This chapter describes the EMTH subfunction EMTH-ADDIF.



Topic Page


Representation: EMTH - ADDIF - Integer + Floating Point Addition 277



EMTH-ADDIF: Integer + Floating Point Addition

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Short Description





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Representation: EMTH - ADDIF - Integer + Floating Point Addition




EMTH

ADDIF

FP and sum

integerINITIATES INTEGER

+ FP OPERATIONOPERATION SUCCESSFUL


Data Type Meaning

Top input 0x, 1x None ON = initiates integer + FP operation

integer(top node)

4x DINT, UDINT

Integer value (first of two contiguous registers)The first of two contiguous 4xxxx registers is entered in the top node. The second register is implied. The double precision integer value to be added to the FP value is stored here.

FP and sum(middle node)

4x REAL FP value and sum (first of four contiguous registers) The first of four contiguous 4xxxx registers is entered in the middle node. The remaining three registers are implied. The displayed register and the first implied register store the FP value to be added in the operation, and the sum is posted in the second and third implied registers. The sum is posted in FP format.

ADDIF(bottom node)

Selection of the subfunction ADDIF




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Integer Value (Top Node)


FP Value and Sum (Middle Node)


Register Content


The double precision integer value to be added to the FP value is stored here.

Register Content


Registers store the FP value to be added in the operation.


The sum is posted here in FP format.


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46EMTH-ANLOG: Base 10 Antilogarithm

At a Glance

Introduction This chapter describes the EMTH subfunction EMTH-ANLOG.



Topic Page


Representation: EMTH - ANLOG - integer Base 10 Antilogarithm 281



EMTH-ANLOG: Base 10 Antilogarithm

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Short Description


This instruction is a subfunction of the EMTH instruction. It belongs to the category "Integer Math."



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Representation: EMTH - ANLOG - integer Base 10 Antilogarithm


EMTH

ANLOG

result

sourceENABLES ANTILOG(X)

OPERATIONOPERATION SUCCESSFUL

ERROR orValue out of range



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Parameters State RAM Reference Data Type Meaning

Top input 0x, 1x None ON = enables antilog(x) operation

source(top node)

3x, 4x INT, UINT Source valueThe top node is a single 4xxxx holding register or 3xxxx input register. The source value (the value on which the antilog calculation will be performed) is stored here in the fixed decimal format 1.234 . It must be in the range of 0 through 7999, representing a source value up to a maximum of 7.999.

result(middle node)

4x DINT, UDINT

Result (first of two contiguous registersThe first of two contiguous 4xxxx registers is entered in the middle node. The second register is implied. The result of the antilog calculation is posted here in the fixed decimal format 12345678.The most significant bits are posted in the displayed register, and the least significant bits are posted in the implied register. The largest antilog value that can be calculated is 99770006 (9977 posted in the displayed register and 0006 posted in the implied register).

ANLOG(bottom node)

Selection of the subfunction ANLOG


Middle output 0x None ON = an error or value out of range



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Source Value (Top Node)

The top node is a single 4x holding register or 3x input register. The source value, i.e. the value on which the antilog calculation will be performed, is stored here in the fixed decimal format 1.234. It must be in the range 0 ... 7 999, representing a source value up to a maximum of 7.999.

Result (Middle Node)

The first of two contiguous 4x registers is entered in the middle node. The second register is implied. The result of the antilog calculation is posted here in the fixed decimal format 12345678:

The largest antilog value that can be calculated is 99770006 (9977 posted in the displayed register and 0006 posted in the implied register).

Register Content

Displayed Most significant bits

First implied Least significant bits



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47EMTH-ARCOS: Floating Point Arc Cosine of an Angle (in Radians)

At a Glance

Introduction This chapter describes the EMTH subfunction EMTH-ARCOS.



Topic Page


Representation: EMTH - ARCOS - Floating Point Math - Arc Cosine of an Angle (in Radians)

287



EMTH-ARCOS: Floating Point Arc Cosine of an Angle (in Radians)

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Short Description





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Representation: EMTH - ARCOS - Floating Point Math - Arc Cosine of an Angle (in Radians)


EMTH

ARCOS

arc cosine of value

valueCALCULATES THE

ARCCOSINE OF THEFLOATING POINT VAL-

UE

OPERATION SUCCESSFUL



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Top input 0x, 1x None ON = calculates arc cosine of the value

value(top node)

4x REAL FP value indicating the cosine of an angle (first of two contiguous registers)The first of two contiguous 4xxxx registers is entered in the top node. The second register is implied. An FP value indicating the cosine of an angle between 0 through Pi radians is stored here.This value must be in the range of -1.0 through +1.0; if not:

The arc cosine is not computedAn invalid result is returnedAn error is flagged in the EMTH ERLOG function

arc cosine of value(middle node)

4x REAL Arc cosine in radians of the value in the top node (first of four contiguous registers) The first of four contiguous 4xxxx registers is entered in the middle node.The remaining three registers are implied. The arc cosine in radians of the FP value in the top node is posted in the second and third implied registers. The displayed register and the first implied register are not used but their allocation in state RAM is required.Tip: To preserve registers, you can make the 4x reference numbers assigned to the displayed register and the first implied register in the middle node equal to the register references in the top node, since the first two middle-node registers are not used.

ARCOS(bottom node)

Selection of the subfunction ARCOS




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Value (Top Node) The first of two contiguous 4x registers is entered in the top node. The second register is implied.

If the value is not in the range of -1.0 ... +1.0:The arc cosine is not computedAn invalid result is returnedAn error is flagged in the EMTH-ERLOG function

Arc Cosine of Value(Middle Node)


Register Content


An FP value indicating the cosine of an angle between 0 ... p radians is stored here. This value must be in the range of -1.0 ... +1.0;

Register Content


Registers are not used but their allocation in state RAM is required.


The arc cosine in radians of the FP value in the top node is posted here.

Note: To preserve registers, you can make the 4x reference numbers assigned to the displayed register and the first implied register in the middle node equal to the register references in the top node, since the first two middle-node registers are not used.



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48EMTH-ARSIN: Floating Point Arcsine of an Angle (in Radians)

At a Glance

Introduction This chapter describes the EMTH subfunction EMTH-ARSIN.



Topic Page


Representation: EMTH - ARSIN - Arcsine of an Angle (in Radians) 293



EMTH-ARSIN: Floating Point Arcsine of an Angle (in Radians)

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Short Description





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Representation: EMTH - ARSIN - Arcsine of an Angle (in Radians)




EMTH

arc sine ofvalue

valueCALCULATES THE ARC-SINE OF THE FLOATING

POINT VALUE



Top input 0x, 1x None ON = calculates the arcsine of the value

value(top node)

4x REAL FP value indicating the sine of an angle (first of two contiguous registers)The first of two contiguous 4xxxx registers is entered in the top node. The second register is implied. An FP value indicating the sine of an angle between -Pi/2 through +Pi/2 radians is stored here.This value, the sine of an angle, must be in the range of -1.0 through +1.0; if not:

The arcsine is not computedAn invalid result is returnedAn error is flagged in the EMTH ERLOG function

arcsine of value(middle node)

4x REAL Arcsine of the value in the top node (first of four contiguous registers)

ARSIN(bottom node)

Selection of the subfunction ARSIN

Top output 0x None ON = operation successful**Error is flagged in the EMTH ERLOG function.



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If the value is not in the range of -1.0 ... +1.0:The arcsine is not computedAn invalid result is returnedAn error is flagged in the EMTH-ERLOG function

Arcsine of Value (Middle Node)


Register Content


An FP value indicating the sine of an angle between - /2 ... /2 radians is stored here. This value (the sine of an angle) must be in the range of -1.0 ... +1.0;

Register Content




The arcsine of the value in the top node is posted here in FP format.



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49EMTH-ARTAN: Floating Point Arc Tangent of an Angle (in Radians)

At a Glance

Introduction This chapter describes the EMTH subfunction EMTH-ARTAN.



Topic Page


Representation: Floating Point Math - Arc Tangent of an Angle (in Radians) 297



EMTH-ARTAN: Floating Point Arc Tangent of an Angle (in Radians)

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Short Description





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Representation: Floating Point Math - Arc Tangent of an Angle (in Radians)


EMTH

ARTAN

arc tangent ofvalue

valueCALCULATES THE ARC

TANGENT OF THEFLOATING POINT VALUE




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Data Type Meaning

Top input 0x, 1x None ON = calculates the arc tangent of the value

value(top node)

4x REAL FP value indicating the tangent of an angle (first of two contiguous registers) The first of two contiguous 4xxxx registers is entered in the top node. The second register is implied. An FP value indicating the tangent of an angle between -Pi/2 through +Pi/2 radians is stored here. Any valid FP value is allowed.

arc tangent of value(middle node)

4x REAL Arc tangent of the value in the top node (first of four contiguous registers)The first of four contiguous 4xxxx registers is entered in the middle node. The remaining three registers are implied.The arc tangent in radians of the FP value in the top node is posted in the second and third implied registers. The displayed register and the first implied register are not used but their allocation in state RAM is required.Tip: To preserve registers, you can make the 4xxxx reference numbers assigned to the displayed register and the first implied register in the middle node equal to the register references in the top node, since the first two middle-node registers are not used.

ARTAN(bottom node)

Selection of the subfunction ARTAN




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Arc Tangent of Value (Middle Node)


Register Content


An FP value indicating the tangent of an angle between - /2 ... /2 radians is stored here. Any valid FP value is allowed.;

Register Content




The arc tangent in radians of the FP value in the top node is posted here.




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50EMTH-CHSIN: Changing the Sign of a Floating Point Number

At a Glance

Introduction This chapter describes the EMTH subfunction EMTH-CHSIN.



Topic Page


Representation: EMTH - CHSIN - Change the Sign of a Floating Point Number 303



EMTH-CHSIN: Changing the Sign of a Floating Point Number

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Short Description





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Representation: EMTH - CHSIN - Change the Sign of a Floating Point Number


EMTH

CHSIN

-(value)

valueCHANGES THE SIGN

OF A FLOATINGPOINT NUMBER




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Data Type Meaning

Top input 0x, 1x None ON = changes the sign of FP value

value(top node)

4x REAL Floating point value (first of two contiguous registers) The first of two contiguous 4xxxx registers is entered in the top node. The second register is implied. The FP value whose sign will be changed is stored here.

-(value)(middle node)

4x REAL Floating point value with changed sign (first of four contiguous registers)The first of four contiguous 4xxxx registers is entered in the middle node. The remaining three registers are implied.The first of four contiguous 4xxxx registers is entered in the middle node. The remaining three registers are implied.The top node FP value in the top node is posted in the second and third implied registers. The displayed register and the first implied register in the middle node are not used in the operation but their allocation in state RAM is required.Tip: To preserve registers, you can make the 4xxxx reference numbers assigned to the displayed register and the first implied register in the middle node equal to the register references in the top node, since the first two middle-node registers are not used.

CHSIN(bottom node)

Selection of the subfunction CHSIN




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Floating Point Value (Top Node)


Floating Point Value with changed sign (Middle Node)


Register Content


The FP value whose sign will be changed is stored here.

Register Content




The top node FP value with changed sign is posted here.




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51EMTH-CMPFP: Floating Point Comparison

At a Glance

Introduction This chapter describes the EMTH subfunction EMTH-CMPFP.



Topic Page


Representation: EMTH - CMFPF - Floating Point Math Comparison 309



EMTH-CMPFP: Floating Point Comparison

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Short Description





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Representation: EMTH - CMFPF - Floating Point Math Comparison


EMTH

CMPFP

value 2

value 1INITIATES COMPARI-

SONOPERATION SUCCESSFUL

VALUE 1 <= VALUE 2

VALUE 1 >= VALUE 2



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Data Type Meaning

Top input 0x, 1x None ON = initiates comparison

value 1(top node)

4x DINT, UDINT

First floating point value (first of two contiguous registers)The first of two contiguous 4xxxx registers is entered in the top node. The second register is implied. The first FP value (value 1) to be compared is stored here.

value 2(middle node)

4x REAL Second floating point value (first of four contiguous registers) The first of four contiguous 4xxxx registers is entered in the middle node. The remaining three registers are implied. The second FP value (value 2) to be compared is entered in the displayed register and the first implied register; the second and third implied registers are not used in the comparison but their allocation in state RAM is required.

CMPFP(bottom node)

Selection of the subfunction CMPFP


Middle output 0x None Please see p. 311. That table indicates the relationship created when CMFPF compares two floating point values.

Bottom output 0x None Please see p. 311. That table indicates the relationship created when CMFPF compares two floating point values.



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Value 1 (Top Node)

The first of two contiguous 4x registers is entered in the top node. The second register is implied:

Value 2 (Middle Node)

The first of four contiguous 4x registers is entered in the middle node. The remaining three registers are implied:

Middle and Bottom Output

When EMTH function CMPFP compares its two FP values, the combined states of the middle and the bottom output indicate their relationship:

Register Content


The first FP value (value 1) to be compared is stored here.

Register Content


The second FP value (value 2) to be compared is stored here.



Middle Output Bottom Output Relationship

ON OFF value 1 > value 2

OFF ON value 1 < value 2

ON ON value 1 = value 2



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52EMTH-CMPIF: Integer-Floating Point Comparison

At a Glance

Introduction This chapter describes the EMTH EMTH subfunction EMTH-CMPIF.



Topic Page


Representation: EMTH - CMPIF - Floating Point Math - Integer/Floating Point Comparison

315



EMTH-CMPIF: Integer-Floating Point Comparison

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Short Description





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Representation: EMTH - CMPIF - Floating Point Math - Integer/Floating Point Comparison


EMTH

CMPIF

FP

integerINITIATE COMPARISON OPERATION SUCCESSFUL

INTEGER <= FP

INTEGER >= FP



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Data Type Meaning

Top input 0x, 1x None ON = initiates comparison

integer(top node)

4x DINT, UDINT Integer value (first of two contiguous registers) The first of two contiguous 4xxxx registers is entered in the top node. The second register is implied. The double precision integer value to be compared is stored here.

FP(middle node)

4x REAL Floating point value (first of four contiguous registers)The first of four contiguous 4xxxx registers is entered in the middle node. The remaining three registers are implied. The FP value to be compared is entered in the displayed register and the first implied register; the second and third implied registers are not used in the comparison but their allocation in state RAM is required.

CMPIF(bottom node)

Selection of the subfunction CMPIF


Middle output 0x None Please see p. 317. That table indicates the relationship created when CMPIF compares two floating point values.

Bottom output 0x None Please see p. 317. That table indicates the relationship created when CMPIF compares two floating point values.



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Floating Point Value (Middle Node)


Middle and Bottom Output

When EMTH function CMPIF compares its integer and FP values, the combined states of the middle and the bottom output indicate their relationship:

Register Content


The double precision integer value to be compared is stored here.

Register Content


The FP value to be compared is stored here.



Middle Output Bottom Output Relationship

ON OFF integer > FP

OFF ON integer < FP

ON ON integer = FP



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53EMTH-CNVDR: Floating Point Conversion of Degrees to Radians

At a Glance

Introduction This chapter describes the EMTH subfunction EMTH-CNVDR.



Topic Page


Representation: EMTH - CNVDR - Conversion of Degrees to Radians 321



EMTH-CNVDR: Floating Point Conversion of Degrees to Radians

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Short Description





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Representation: EMTH - CNVDR - Conversion of Degrees to Radians


EMTH

CNVDR

result

valueINITIATE CONVERSION OPERATION SUCCESSFUL



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Data Type Meaning

Top input 0x, 1x None ON = initiates conversion of value 1 to value 2 (result)

value(top node)

4x REAL Value in FP format of an angle in degrees (first of two contiguous registers)The first of two contiguous 4xxxx registers is entered in the top node. The second register is implied. The value in FP format of an angle in degrees is stored here.

result(middle node)

4x REAL Converted result (in radians) in FP format (first of four contiguous registers)The first of four contiguous 4xxxx registers is entered in the middle node. The remaining three registers are implied.The converted result in FP format of the top-node value (in radians) is posted in the second and third implied registers. The displayed register and the first implied register are not used but their allocation in state RAM is required.Tip: To preserve registers, you can make the 4xxxx reference numbers assigned to the displayed register and the first implied register in the middle node equal to the register references in the top node, since the first two middle-node registers are not used.

CNVDR(bottom node)

Selection of the subfunction CNVDR




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Value (Top Node) The first of two contiguous 4x registers is entered in the top node. The second register is implied:

Result in Radians (Middle Node)


Register Content


The value in FP format of an angle in degrees is stored here.

Register Content




The converted result in FP format of the top-node value (in radians) is posted here.




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54EMTH-CNVFI: Floating Point to Integer Conversion

At a Glance

Introduction This chapter describes the EMTH subfunction EMTH-CNVFI.



Topic Page


Representation: EMTH - CNVFI - Floating Point to Integer Conversion 327


Runtime Error Handling 330


EMTH-CNVFI: Floating Point to Integer Conversion

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Short Description





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Representation: EMTH - CNVFI - Floating Point to Integer Conversion


EMTH

CNVFI

integer

FPINITIATES

FP TO INTEGERCONVERSION


OFF = POSTIVE INTEGER VALUEON = NEGATVE INTEGER VALUE



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Data Type Meaning

Top input 0x, 1x None ON = initiates FP to integer conversion

FP(top node)

4x REAL Floating point value to be converted (first of two contiguous registers)The first of two contiguous 4xxxx registers is entered in the top node. The second register is implied. The double precision integer value to be converted to 32-bit FP format is stored here.Note: If an invalid integer value ( > 9999) is entered in either of the two top-node registers, the FP conversion will be performed but an error will be reported and logged in the EMTH ERLOG function (see page 138). The result of the conversion may not be correct.

integer(middle node)

4x DINT, UDINT

Integer value (first of four contiguous registers)The first of four contiguous 4xxxx registers is entered in the middle node. The remaining three registers are implied. The FP result of the conversion is posted in the second and third implied registers. The displayed register and the first implied register are not used in the function but their allocation in state RAM is required.Tip: To preserve registers, you can make the 4x reference numbers assigned to the displayed register and the first implied register in the middle node equal to the register references in the top node, since the first two middle-node registers are not used.

CNVFI(bottom node)

Selection of the subfunction CNVFI


Bottom output 0x None OFF = positive integer valueON = negative integer value



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Integer Value (Middle Node)


Register Content




The double precision integer result of the conversion is stored here. This value should be the largest integer value possible that is the FP value.For example, the FP value 3.5 is converted to the integer value 3, while the FP value -3.5 is converted to the integer value -4.




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Runtime Error Handling

Runtime Errors If the resultant integer is too large for double precision integer format (> 99 999 999), the conversion still occurs but an error is logged in the EMTH_ERLOG function.


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55EMTH-CNVIF: Integer-to-Floating Point Conversion

At a Glance

Introduction This chapter describes the EMTH subfunction EMTH-CNVIF.



Topic Page


Representation: EMTH - CNVIF - Integer to Floating Point Conversion 333




EMTH-CNVIF: Integer-to-Floating Point Conversion

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Short Description





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Representation: EMTH - CNVIF - Integer to Floating Point Conversion


EMTH

CNVIF

result

integerINTIATES INTEGER TO

FP CONVERSIONOPERATION SUCCESSFUL



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Data Type Meaning

Top input 0x, 1x None ON = initiates FP to integer conversion

integer(top node)

4x DINT, UDINT

Integer value (first of two contiguous registers)The first of two contiguous 4xxxx registers is entered in the top node. The second register is implied. The FP value to be converted is stored here.

result(middle node)

4x REAL Result (first of four contiguous registers)The first of four contiguous 4xxxx registers is entered in the middle node. The remaining three registers are implied. The double precision integer result of the conversion is stored in the second and third implied registers. This value should be the largest integer value possible that is <= the FP value. For example, the FP value 3.5 is converted to the integer value 3, while the FP value -3.5 is converted to the integer value -4.Note: If the resultant integer is too large for 984 double precision integer format (> 99,999,999), the conversion still occurs but an error is logged in the EMTH ERLOG function (see page 138).The displayed register and the first implied register in the middle node are not used in the conversion but their allocation in state RAM is required.Tip: To preserve registers, you can make the 4xxxx reference numbers assigned to the displayed register and the first implied register in the middle node equal to the register references in the top node, since the first two middle-node registers are not used.

CNVIF(bottom node)

Selection of the subfunction CNVIF




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The first of four contiguous 4x registers is entered in the middle node. The remaining three registers are implied.

Register Content


The double precision integer value to be converted to 32-bit FP format is stored here.

Register Content




The FP result of the conversion is posted here.




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Runtime Errors If an invalid integer value ( > 9 999) is entered in either of the two top-node registers, the FP conversion will be performed but an error will be reported and logged in the EMTH_ERLOG function. The result of the conversion may not be correct.


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56EMTH-CNVRD: Floating Point Conversion of Radians to Degrees

At a Glance

Introduction This chapter describes the EMTH subfunction EMTH-CNVRD.



Topic Page


Representation: EMTH - CNVRD - Conversion of Radians to Degrees 339



EMTH-CNVRD: Floating Point Conversion of Radians to Degrees

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Short Description





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Representation: EMTH - CNVRD - Conversion of Radians to Degrees


EMTH

CNVRD

result

valueINITIATES CONVER-

SIONOPERATION SUCCESSFUL



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Data Type Meaning

Top input 0x, 1x None ON = initiates conversion of value 1 to value 2

value(top node)

4x REAL Value in FP format of an angle in radians (first of two contiguous registers)The first of two contiguous 4xxxx registers is entered in the top node. The second register is implied. The value in FP format of an angle in radians is stored here.

result(middle node)

4x REAL Converted result (in degrees) in FP format (first of four contiguous registers)The first of four contiguous 4xxxx registers is entered in the middle node. The remaining three registers are implied. The converted result in FP format of the top-node value (in degrees) is posted in the second and third implied registers. The displayed register and the first implied register are not used but their allocation in state RAM is required.Tip: To preserve registers, you can make the 4xxxx reference numbers assigned to the displayed register and the first implied register in the middle node equal to the register references in the top node, since the first two middle-node registers are not used.

CNVRD(bottom node)

Selection of the subfunction CNVRD




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Result in Degrees(Middle Node)


Register Content


The value in FP format of an angle in radians is stored here.

Register Content




The converted result in FP format of the top-node value (in degrees) is posted here.




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57EMTH-COS: Floating Point Cosine of an Angle (in Radians)

At a Glance

Introduction This chapter describes the EMTH subfunction EMTH-COS.



Topic Page


Representation: EMTH - COS - Cosine of an Angle (in Radians) 345



EMTH-COS: Floating Point Cosine of an Angle (in Radians)

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Short Description





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Representation: EMTH - COS - Cosine of an Angle (in Radians)




EMTH

COS

cosine of val-ue

valueCALCULATES THE CO-

SINE OF THE FLOATINGPOINT VALUE



Data Type

Meaning

Top input 0x, 1x None ON = calculates the cosine of the value

value(top node)

4x REAL FP value indicating the value of an angle in radians (first of two contiguous registers)The first of two contiguous 4xxxx registers is entered in the top node. The second register is implied. An FP value indicating the value of an angle in radians is stored here. The magnitude of this value must be < 65536.0; if not:

The cosine is not computedAn invalid result is returnedAn error is flagged in the EMTH ERLOG function

cosine of value(middle node)

4x REAL Cosine of the value in the top node (first of four contiguous registers)

COS(bottom node)

Selection of the subfunction COS




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If the magnitude of this value is 65 536.0:The cosine is not computedAn invalid result is returnedAn error is flagged in the EMTH-ERLOG function

Cosine of Value (Middle Node)


Register Content


An FP value indicating the value of an angle in radians is stored here. The magnitude of this value must be < 65 536.0.

Register Content




The cosine of the value in the top node is posted here in FP format.



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58EMTH-DIVDP: Double Precision Division

At a Glance

Introduction This chapter describes the EMTH subfunction EMTH-DIVDP.



Topic Page


Representation: EMTH - DIVDP - Double Precision Math - Division 349




EMTH-DIVDP: Double Precision Division

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Short Description





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Representation: EMTH - DIVDP - Double Precision Math - Division




EMTH

DIVDP

operand 2quotient

remainder

operand 1TOP NODE DIVIDED BY

MIDDLE NODEOPERATION SUCCESSFUL

OPERAND 2 IS 0

OPERAND OUT OF RANGE OR IN-VLID

ON = DECIMAL REMAIN-DER

OFF = FRACTIONAL RE-MAINDER


Data Type Meaning

Top input 0x, 1x None ON = operand 1 divided by operand 2 and result posted in designated registers.

Middle input 0x, 1x None ON = decimal remainderOFF = fractional remainder

operand 1top node

4x DINT, UDINT

Operand 1 (first of two contiguous registers) The first of two contiguous 4xxxx registers is entered in the top node. The second register is implied. The top node is stored here. Each register holds a value in the range of 0000 through 9999, for a combined double precision value in the range of 0 through 99,999,999. The high-order half of operand 1 is stored in the displayed register, and the low-order half is stored in the implied register.



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operand 2quotientremaindermiddle node

4x DINT, UDINT

Operand 2, quotient and remainder (first of six contiguous registers)The first of six contiguous 4xxxx registers is entered in the middle node. The remaining five registers are implied:

The displayed register and the first implied register store the high-order and low-order halves of operand 2, respectively, for a combined double precision value in the range of 0 through 99,999,999

Note: Since division by 0 is illegal, a 0 value causes an error. An error trapping routine sets the remaining middle-node registers to 0000 and turns the bottom output ON.

The second and third implied registers store an eight-digit quotientThe fourth and fifth implied registers store the remainder. If the remainder is expressed as a fraction, it is eight digits long and both registers are used; if the remainder is expressed as a decimal, it is four digits long and only the fourth implied register is used

DIVDP(bottom node)

Selection of the subfunction DIVDP"


Middle output 0x None ON = an operand out of range or invalid

Bottom output

0x None ON = operand 2 = 0


Data Type Meaning



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Each register holds a value in the range 0000 ... 9 999, for a combined double precision value in the range 0 ... 99 999 999.

Operand 2, Quotient and Remainder (Middle Node)

The first of six contiguous 4x registers is entered in the middle node. The remaining five registers are implied

Register Content

Displayed Low-order half of operand 1 is stored here.

First implied High-order half of Operand 1 is stored here.

Register Content


First implied Register stores the high-order half of operand 2, respectively, for a combined double precision value in the range 0 ... 99 999 999.


Registers store an eight-digit quotient.

Fourth impliedFifth implied

Registers store the remainder. f it is expressed as a decimal, it is four digits long and only the fourth implied register is used.If it is expressed as a fraction, it is eight digits long and both registers are used



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Runtime Errors Since division by 0 is illegal, a 0 value causes an error, an error trapping routine sets the remaining middle-node registers to 0000 and turns the bottom output ON.


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59EMTH-DIVFI: Floating Point Divided by Integer

At a Glance

Introduction This chapter describes the EMTH subfunction EMTH-DIVFI.



Topic Page


Representation: EMTH - DIVFI - Floating Point Divided by Integer 355



EMTH-DIVFI: Floating Point Divided by Integer

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Short Description





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Representation: EMTH - DIVFI - Floating Point Divided by Integer




EMTH

DIVFI

integer and quotient

FPINITIATES FP / INTE-

GER OPERATIONOPERATION SUCCESSFUL


Data Type

Meaning

Top input 0x, 1x None ON = initiates FP / integer operation

FP(top node)

4x REAL Floating point value (first of two contiguous registers) The first of two contiguous 4xxxx registers is entered in the top node. The second register is implied. The FP value to be divided by the integer value is stored here.

integer and quotient(middle node)

4x DINT, UDINT

Integer value and quotient (first of four contiguous registers) The first of four contiguous 4xxxx registers is entered in the middle node. The remaining three registers are implied. The double precision integer value that divides the FP value is posted in the displayed register and the first implied register, and the quotient is posted in the second and third implied registers. The quotient is posted in FP format.

DIVFI(bottom node)

Selection of the subfunction DIVFI




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Integer Value and Quotient (Middle Node)


Register Content


The FP value to be divided by the integer value is stored here.

Register Content


The double precision integer value that divides the FP value is posted here.


The quotient is posted here in FP format.


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60EMTH-DIVFP: Floating Point Division

At a Glance

Introduction This chapter describes the instrcution EMTH-DIVFP.



Topic Page


Representation: EMTH - DIVFP - Floating Point Division 359



EMTH-DIVFP: Floating Point Division

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Short Description





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Representation: EMTH - DIVFP - Floating Point Division




EMTH

DIVFP

value 2 and quotient

value 1ENABLES FP DIVISION OPERATION SUCCESSFUL


Data Type

Meaning

Top input 0x, 1x None ON = initiates value 1 / value 2 operation

value 1(top node)

4x REAL Floating point value 1 (first of two contiguous registers) The first of two contiguous 4xxxx registers is entered in the top node. The second register is implied. FP value 1, which will be divided by the value 2, is stored here.

value 2 and quotient(middle node)

4x REAL Floating point value 2 and the quotient (first of four contiguous registers)The first of four contiguous 4xxxx registers is entered in the middle node. The remaining three registers are implied. FP value 2, the value by which value 1 is divided, is stored in the displayed register and the first implied register. The quotient is posted in FP format in the second and third implied registers.

DIVFP(bottom node)

Selection of the subfunction DIVFP




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Floating Point Value 2 and Quotient (Middle Node)


Register Content


FP value 1, which will be divided by the value 2, is stored here.

Register Content


FP value 2, the value by which value 1 is divided, is stored here




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61EMTH-DIVIF: Integer Divided by Floating Point

At a Glance

Introduction This chapter describes the instrcution EMTH-DIVIF.



Topic Page


Representation: EMTH - DIVIF - Integer Divided by Floating Point 363



EMTH-DIVIF: Integer Divided by Floating Point

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Short Description





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Representation: EMTH - DIVIF - Integer Divided by Floating Point




EMTH

DIVIF

FP and quotient

integerINTITATES INTEGER

/ FP OPERATIONOPERATION SUCCESS-FUL


Data Type Meaning

Top input 0x, 1x None ON = initiates integer / FP operation

integer(top node)

4x DINT, UDINT

Integer value (first of two contiguous registers) The first of two contiguous 4xxxx registers is entered in the top node. The second register is implied. The double precision integer value to be divided by the FP value is stored here.

FP and quotient(middle node)

4x REAL FP value and quotient (first of four contiguous registers) The first of four contiguous 4xxxx registers is entered in the middle node. The remaining three registers are implied. The displayed register and the first implied register store the FP value to be divided in the operation, and the quotient is posted in the second and third implied registers. The quotient is posted in FP format.

DIVIF(bottom node)

Selection of the subfunction DIVIF




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Floating Point Value and Quotient (Middle Node)


Register Content


The double precision integer value to be divided by the FP value is stored here.

Register Content


The FP value to be divided in the operation is posted here.




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62EMTH-ERLOG: Floating Point Error Report Log

At a Glance

Introduction This chapter describes the instrcution EMTH-ERLOG.



Topic Page


Representation: EMTH - ERLOG - Floating Point Math - Error Report Log 367



EMTH-ERLOG: Floating Point Error Report Log

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Short Description





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Representation: EMTH - ERLOG - Floating Point Math - Error Report Log


EMTH

error data

not usedRETRIEVES A LOG OFERROR TYPES SINCE

LAST INVOCATION

RETRIEVAL SUCCESSFUL

ON = NONZERO VLAUES INERROR LOG REGESTEROFF = ALL ZEROS IN ERROR LOG REGISTER



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Data Type Meaning

Top input 0x, 1x None ON = retrieves a log of error types since last invocation

not used(top node)

4x INT, UINT, DINT, UDINT, REAL

Not used in the operation (first of two contiguous registers) The first of two contiguous 4xxxx registers is entered in the top node. The second register is implied. These two registers are not used in the operation but their allocation in state RAM is required.

error data(middle node)

4x INT, UINT, DINT, UDINT, REAL

Error log register (first of four contiguous registers) The first of four contiguous 4xxxx registers is entered in the middle node.The remaining three registers are implied. The second implied register is used as the error log register. (For expanded and detailed information about the error log please see p. 369 in the section Parameter Description.The third implied register has all its bits cleared to zero. The displayed register and the first implied register are not used but their allocation in state RAM is required.Tip: To preserve registers, you can make the 4xxxx reference numbers assigned to the displayed register and the first implied register in the middle node equal to the register references in the top node, since these registers must be allocated but none are used.

ERLOG(bottom node)

Selection of the subfunction ERLOG

Top output 0x None ON = retrieval successful

Middle output 0x None ON = nonzero values in error log registerOFF = all zeros in error log register



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Not used (Top Node)


Error Data (Middle Node)


Error Log Register

Usage of error log register:

If the bit is set to 1, then the specific error condition exists for that bit.

Register Content


These two registers are not used in the operation but their allocation in state RAM is required.

Register Content

Displayed Error log register, see table.

First implied This register has all its bits cleared to zero.


These two registers are not used but their allocation in state RAM is required.

Note: To preserve registers, you can make the 4x reference numbers assigned to the displayed register and the first implied register in the middle node equal to the register references in the top node, since these registers must be allocated but none are used.

Bit Function

1 - 8 Function code of last error logged

9 - 11 Not used

12 Integer/FP conversion error

13 Exponential function power too large

14 Invalid FP value or operation

15 FP overflow

16 FP underflow

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16



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63EMTH-EXP: Floating Point Exponential Function

At a Glance

Introduction This chapter describes the EMTH subfunction EMTH-EXP.



Topic Page


Representation: EMTH - EXP - Floating Point Math - Exponential Function 373



EMTH-EXP: Floating Point Exponential Function

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Short Description





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Representation: EMTH - EXP - Floating Point Math - Exponential Function


EMTH

EXP

result

valueCALCULATES EXPONEN-

TIAL OF THE VALUEOPERATION SUCCESSFUL



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Data Type Meaning

Top input 0x, 1x None ON = calculates exponential function of the value

value (top node)

4x REAL Value in FP format (first of two contiguous registers) The first of two contiguous 4xxxx registers is entered in the top node. The second register is implied. A value in FP format in the range -87.34 through +88.72 is stored here.If the value is out of range, the result will either be 0 or the maximum value. No error will be flagged.

result(middle node)

4x REAL Exponential of the value in the top node (first of four contiguous registers) The first of four contiguous 4xxxx registers is entered in the middle node. The remaining three registers are implied. The exponential of the value in the top node is posted in FP format in the second and third implied registers. The displayed register and the first implied register are not used but their allocation in state RAM is required.Tip: To preserve registers, you can make the 4xxxx reference numbers assigned to the displayed register and the first implied register in the middle node equal to the register references in the top node, since the first two middle-node registers are not used.

EXP (bottom node)

Selection of the subfunction EXP




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Register Content


A value in FP format in the range -87.34 ... +88.72 is stored here.If the value is out of range, the result will either be 0 or the maximum value. No error will be flagged.

Register Content


These registers are not used but their allocation in state RAM is required


The exponential of the value in the top node is posted here in FP format.




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64EMTH-LNFP: Floating Point Natural Logarithm

At a Glance

Introduction This chapter describes the EMTH subfunction EMTH-LNFP.



Topic Page


Representation: EMTH - LNFP - Natural Logarithm 379



EMTH-LNFP: Floating Point Natural Logarithm

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Short Description





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Representation: EMTH - LNFP - Natural Logarithm


EMTH

LNFP

result

valueCALCULATES THE

NATURAL LOG OF THEVALUE




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Data Type Meaning

Top input 0x, 1x None ON = calculates the natural log of the value

value(top node)

4x REAL Value > 0 in FP format (first of two contiguous registers) The first of two contiguous 4xxxx registers is entered in the top node. The second register is implied. A value > 0 is stored here in FP format. If the value <= 0, an invalid result will be returned in the middle node and an error will be logged in the EMTH ERLOG function.

result(middle node)

4x REAL Natural logarithm of the value in the top node (first of four contiguous registers)The first of four contiguous 4xxxx registers is entered in the middle node. The remaining three registers are implied. The natural logarithm of the value in the top node is posted in FP format in the second and third implied registers. The displayed register and the first implied register are not used but their allocation in state RAM is required.Tip: To preserve registers, you can make the 4xxxx reference numbers assigned to the displayed register and the first implied register in the middle node equal to the register references in the top node, since the first two middle-node registers are not used.

LNFP(bottom node)

Selection of the subfunction LNFP




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Register Content


A value > 0 is stored here in FP format.If the value 0, an invalid result will be returned in the middle node and an error will be logged in the EMTH-ERLOG function.

Register Content




The natural logarithm of the value in the top node is posted here in FP format.




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65EMTH-LOG: Base 10 Logarithm

At a Glance

Introduction This chapter describes the EMTH subfunction EMTH-LOG.



Topic Page


Representation: EMTH - LOG - Integer Math - Base 10 Logarithm 385



EMTH-LOG: Base 10 Logarithm

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Short Description





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Representation: EMTH - LOG - Integer Math - Base 10 Logarithm


EMTH

LOG

result

sourceENABLES LOG(X)

OPERATIONOPERATION SUCCESSFUL

ERROR OR VALUE OUT OF RANGE



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Data Type Meaning

Top input 0x, 1x None ON = enables log(x) operation

source(top node)

3x, 4x DINT, UDINT Source value (first of two contiguous registers). The first of two contiguous 3xxxx or 4xxxx registers is entered in the top node. The second register is implied. The source value upon which the log calculation will be performed is stored in these registers.If you specify a 4xxxx register, the source value may be in the range of 0 through 99,999,99. The low-order half of the value is stored in the implied register, and the high-order half is stored in the displayed register.If you specify a 3xxxx register, the source value may be in the range of 0 through 9,999. The log calculation is done on only the value in the displayed register; the implied register is required but not used.

result(middle node)

4x INT, UINT Result: The middle node contains a single 4xxxx holding register where the result of the base 10 log calculation is posted. The result is expressed in the fixed decimal format 1.234 , and is truncated after the third decimal position. The largest result that can be calculated is 7.999, which would be posted in the middle register as 7999.

LOG(bottom node)

Selection of the subfunction LOG


Middle output 0x None ON = an error or value out of range



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The first of two contiguous 3x or 4x registers is entered in the top node. The second register is implied. The source value upon which the log calculation will be performed is stored in these registers.

If you specify a 4x register, the source value may be in the range 0 ... 99 999 99:

If you specify a 3x register, the source value may be in the range 0 ... 9 999:


The middle node contains a single 4x holding register where the result of the base 10 log calculation is posted. The result is expressed in the fixed decimal format 1.234, and is truncated after the third decimal position.

The largest result that can be calculated is 7.999, which would be posted in the middle register as 7999.

Register Content

Displayed The high-order half of the value is stored here.

First implied The low-order half of the value is stored here.

Register Content

Displayed The source value upon which the log calculation will be performed is stored here

First implied This register is required but not used.



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66EMTH-LOGFP: Floating Point Common Logarithm

At a Glance

Introduction This chapter describes the EMTH subfunction EMTH-LOGFP.



Topic Page


Representation: EMTH - LOGFP - Common Logarithm 391



EMTH-LOGFP: Floating Point Common Logarithm

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Short Description





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Representation: EMTH - LOGFP - Common Logarithm


EMTH

LOGFP

result

valueCALCULATES THE COM-

MON LOG OF THE VALUEOPERATION SUCCESSFUL



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Data Type Meaning

Top input 0x, 1x None ON = calculates the common log of the value

value(top node)

4x REAL Value > 0 in FP format (first of two contiguous registers). The first of two contiguous 4xxxx registers is entered in the top node. The second register is implied. A value > 0 is stored here in FP format. If the value <= 0, an invalid result will be returned in the middle node and an error will be logged in the EMTH ERLOG function.

result(middle node)

4x REAL Common logarithm of the value in the top node (first of four contiguous registers)The first of four contiguous 4xxxx registers is entered in the middle node. The remaining three registers are implied.The common logarithm of the value in the top node is posted in FP format in the second and third implied registers. The displayed register and the first implied register are not used but their allocation in state RAM is required.Tip: To preserve registers, you can make the 4xxxx reference numbers assigned to the displayed register and the first implied register in the middle node equal to the register references in the top node, since the first two middle-node registers are not used.

LOGFP(bottom node)

Selection of the subfunction LOGFP




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Register Content


A value > 0 is stored here in FP format.If the value 0, an invalid result will be returned in the middle node and an error will be logged in the EMTH-ERLOG function.

Register Content




The common logarithm of the value in the top node is posted here in FP format.




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67EMTH-MULDP: Double Precision Multiplication

At a Glance

Introduction This chapter describes the EMTH subfunction EMTH-MULDP.



Topic Page


Representation: EMTH - MULDP - Double Precision Math - Multiplication 397



EMTH-MULDP: Double Precision Multiplication

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Short Description





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Representation: EMTH - MULDP - Double Precision Math - Multiplication


EMTH

MULDP

operand 2/product

operand 1TOP NODE MULTI-PLIED BY MIDDLE

NODE


OPERAND OUT OF RANGE OR INVALID



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Data Type Meaning

Top input 0x, 1x None ON = Operand 1 x Operand 2Product posted in designated registers

operand 1(top node)

4x DINT, UDINT

Operand 1 (first of two contiguous registers)The first of two contiguous 4x registers is entered in the top node. The second 4x register is implied. Operand 1 is stored here. The second 4x register is implied. Each register holds a value in the range of 0000 through 9999, for a combined double precision value in the range of 0 through 99,999,999. The high-order half of operand 1 is stored in the displayed register, and the low-order half is stored in the implied register.

operand 2 / product(middle node)

4x DINT, UDINT

Operand 2 and product (first of six contiguous registers)The first of six contiguous 4xxxx registers is entered in the middle node. The remaining five registers are implied:

The displayed register and the first implied register store the high-order and low-order halves of operand 2, respectively, for a combined double precision value in the range 0 through 99,999,999The last four implied registers store the double precision product in the range 0 through 9,999,999,999,999,999

MULDP(bottom node)

Selection of the subfunction MULDP


Middle output 0x None ON = operand out of range



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Operand 2 and Product (Middle Node)


Register Content

Displayed Register stores the low-order half of operand 1Range 0 000 ... 9 999, for a combined double precision value in the range 0 ... 99 999 999

First implied Register stores the high-order half of operand 1Range 0 000 ... 9 999, for a combined double precision value in the range 0 ... 99 999 999

Register Content


First implied Register stores the high-order half of operand 2, respectively, for a combined double precision value in the range 0 ... 99 999 999

Second impliedThird impliedFourth impliedFifth implied

These registers store the double precision product in the range 0 ... 9 999 999 999 999 999



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68EMTH-MULFP: Floating Point Multiplication

At a Glance

Introduction This chapter describes the EMTH subfunction EMTH-MULFP.



Topic Page


Representation: EMTH - MULFP - Floating Point - Multiplication 403



EMTH-MULFP: Floating Point Multiplication

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Short Description





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Representation: EMTH - MULFP - Floating Point - Multiplication




EMTH

MULFP

value 2 and product

value 1ENABLES FP

MULTIPLICATIONOPERATION SUCCESSFUL


Data Type Meaning

Top input 0x, 1x None ON = initiates FP multiplication

value 1(top node)

4x REAL Floating point value 1 (first of two contiguous registers) The first of two contiguous 4xxxx registers is entered in the top node. The second register is implied. FP value 1 in the multiplication operation is stored here.

value 2 and product(middle node)

4x REAL Floating point value 2 and the product (first of four contiguous registers) The first of four contiguous 4xxxx registers is entered in the middle node. The remaining three registers are implied. FP value 2 in the multiplication operation is stored in the displayed register and the first implied register. The product of the multiplication is stored in FP format in the second and third implied registers.

MULFP(bottom node)

Selection of the subfunction MULFP




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Floating Point Value 2 and Product (Middle Node)


Register Content


FP value 1 in the multiplication operation is stored here.

Register Content


FP value 2 in the multiplication operation is stored here.


The product of the multiplication is stored here in FP format.


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69EMTH-MULIF: Integer x Floating Point Multiplication

At a Glance

Introduction This chapter describes the EMTH subfunction EMTH-MULIF.



Topic Page


Representation: EMTH - MULIF - Integer Multiplied by Floating Point 407



EMTH-MULIF: Integer x Floating Point Multiplication

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Short Description





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Representation: EMTH - MULIF - Integer Multiplied by Floating Point


EMTH

MULIF

FPand

integerINITIATES INTEGER X

FP OPERATIONOPERATION SUCCESSFUL



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Data Type Meaning

Top input 0x, 1x None ON = initiates integer x FP operation

integer(top node)

4x DINT, UDINT

Integer value (first of two contiguous registers) The first of two contiguous 4xxxx registers is entered in the top node. The second register is implied. The double precision integer value to be multiplied by the FP value is stored here.

FP and product(middle node)

4x REAL FP value and product (first of four contiguous registers) The first of four contiguous 4xxxx registers is entered in the middle node. The remaining three registers are implied. The displayed register and the first implied register store the FP value to be multiplied in the operation, and the product is posted in the second and third implied registers. The product is posted in FP format.The first of four contiguous 4xxxx registers is entered in the middle node. The remaining three registers are implied. The displayed register and the first implied register store the FP value to be multiplied in the operation, and the product is posted in the second and third implied registers. The product is posted in FP format.

MULIF(bottom node)

Selection of the subfunction MULIF




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FP Value and Product (Middle Node)


Register Content


The double precision integer value to be multiplied by the FP value is stored here.

Register Content


The FP value to be multiplied in the operation is stored here.


The product of the multiplication is stored here in FP format.



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70EMTH-PI: Load the Floating Point Value of "Pi"

At a Glance

Introduction This chapter describes the EMTH subfunction EMTH-PI (Load the Floating Point Value of ).



Topic Page


Representation: EMTH - PI - Floating Point Math - Load the Floating Point Value of PI

413



EMTH-PI: Load the Floating Point Value of "Pi"

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Short Description





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Representation: EMTH - PI - Floating Point Math - Load the Floating Point Value of PI


EMTH

PI

FP Valueof

not usedLOADS FLOATING POINTVALUE OF PI TO MIDDLE

NODE REGISTERS




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Data Type Meaning

Top input 0x, 1x None ON = loads FP value of to middle node register

not used(top node)

4x REAL First of two contiguous registersThe first of two contiguous 4xxxx registers is entered in the top node. The second register is implied. These registers are not used but their allocation in state RAM is required.

FP value of (middle node)

4x REAL FP value of (first of four contiguous registers)The first of four contiguous 4xxxx registers is entered in the middle node.The remaining three registers are implied.The FP value of p is posted in the second and third implied registers. The displayed register and the first implied register are not used but their allocation in state RAM is required.Tip: To preserve registers, you can make the 4xxxx reference numbers assigned to the displayed register and the first implied register in the middle node equal to the register references in the top node, since the first two middle-node registers are not used.

PI(bottom node)

Selection of the subfunction PI




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Not used (Top Node)

The first of two contiguous 4x registers is entered in the middle node. The second register is implied:

Floating Point Value of (Middle Node)


Register Content


These registers are not used but their allocation in state RAM is required.

Register Content


These registers are not used but their allocation in state RAM is required.


The FP value of is posted here.




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71EMTH-POW: Raising a Floating Point Number to an Integer Power

At a Glance

Introduction This chapter describes the EMTH subfunction EMTH-POW.



Topic Page


Representation: EMTH - POW - Raising a Floating Point Number to an Integer Power

419



EMTH-POW: Raising a Floating Point Number to an Integer Power

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Short Description





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Representation: EMTH - POW - Raising a Floating Point Number to an Integer Power


EMTH

POW

integerand

result

FP valueCALCULATES FP VAL-

UE RAISED TO THEPOWER OF INT VALUE




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Data Type Meaning

Top input 0x, 1x None ON = calculates FP value raised to the power of integer value

FP value(top node)

4x REAL FP value (first of two contiguous registers)The first of two contiguous 4xxxx registers is entered in the top node. The second register is implied. The FP value to be raised to the integer power is stored here.

integer and result(middle node)

4x INT, UINT Integer value and result (first of four contiguous registers). The first of four contiguous 4xxxx registers is entered in the middle node.The remaining three registers are implied.The bit values in the displayed register must all be cleared to zero. An integer value representing the power to which the top-node value will be raised is stored in the first implied register. The result of the FP value being raised to the power of the integer value is stored in the second and third implied registers.

POW(bottom node)

Selection of the subfunction POW




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FP Value (Top Node)


Integerand Result (Middle Node)


Register Content


The FP value to be raised to the integer power is stored here.

Register Content

Displayed The bit values in this register must all be cleared to zero.

First implied An integer value representing the power to which the top-node value will be raised is stored here.


The result of the FP value being raised to the power of the integer value is stored here.



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72EMTH-SINE: Floating Point Sine of an Angle (in Radians)

At a Glance

Introduction This chapter describes the EMTH subfunction EMTH-SINE.



Topic Page


Representation: EMTH - SINE - Floating Point Math - Sine of an Angle (in Radians)

425



EMTH-SINE: Floating Point Sine of an Angle (in Radians)

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Short Description





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Representation: EMTH - SINE - Floating Point Math - Sine of an Angle (in Radians)


EMTH

SINE

sine ofvalue

valueCALCULATES THE

SINE OF THE VALUEOPERATION SUCCESSFUL



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Data Type Meaning

Top input 0x, 1x None ON = calculates the sine of the value

value(top node)

4x REAL FP value indicating the value of an angle in radians (first of two contiguous registers)The first of two contiguous 4xxxx registers is entered in the top node. The second register is implied. An FP value indicating the value of an angle in radians is stored here.The magnitude of this value must be < 65536.0; if not:

The sine is not computedAn invalid result is returnedAn error is flagged in the EMTH ERLOG function

sine of value(middle node)

4x REAL Sine of the value in the top node (first of four contiguous registers) The first of four contiguous 4xxxx registers is entered in the middle node.The remaining three registers are implied. The sine of the value in the top node is posted in the second and third implied registers in FP format. The displayed register and the first implied register are not used but their allocation in state RAM is required.Tip: To preserve registers, you can make the 4xxxx reference numbers assigned to the displayed register and the first implied register in the middle node equal to the register references in the top node, since the first two middle-node registers are not used.

SINE(bottom node)

Selection of the subfunction SINE




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If the magnitude is 65 536.0:The sine is not computedAn invalid result is returnedAn error is flagged in the EMTH-ERLOG function

Sine of Value (Middle Node)


Register Content



Register Content




The sine of the value in the top node is posted here in FP format.




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73EMTH-SQRFP: Floating Point Square Root

At a Glance

Introduction This chapter describes the EMTH subfunction EMTH-SQRFP.



Topic Page


Representation: EMTH - SQRFP - Square Root 431



EMTH-SQRFP: Floating Point Square Root

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Short Description





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Representation: EMTH - SQRFP - Square Root


EMTH

SQRFP

result

valueINITIATES SQUARE

ROOTON FLOATING POINT

VALUE




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Data Type Meaning

Top input 0x, 1x None ON = initiates square root on FP value

value(top node)

4x REAL Floating point value (first of two contiguous registers). The first of two contiguous 4xxxx registers is entered in the top node. The second register is implied. The FP value on which the square root operation is performed is stored here.

result(middle node)

4x REAL Result in FP format (first of four contiguous registers). The first of four contiguous 4xxxx registers is entered in the middle node. The remaining three registers are implied. The result of the square root operation is posted in FP format in the second and third implied registers. The displayed register and the first implied register in the middle node are not used in the operation but their allocation in state RAM is required.Tip: To preserve registers, you can make the 4xxxx reference numbers assigned to the displayed register and the first implied register in the middle node equal to the register references in the top node, since the first two middle-node registers are not used.

SQRFP(bottom node)

Selection of the subfunction SQRFP




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Register Content


The FP value on which the square root operation is performed is stored here.

Register Content




The result of the square root operation is posted here in FP format.




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74EMTH-SQRT: Floating Point Square Root

At a Glance

Introduction This chapter describes the EMTH subfunction EMTH-SQRT.



Topic Page


Representation: EMTH - SQRT - Square Root 437



EMTH-SQRT: Floating Point Square Root

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Short Description





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Representation: EMTH - SQRT - Square Root


INITIATES A STAN-DARD SQRTOPERATION


TOP NODE VALUE OUT OFRANGE

source

result

EMTH

SQRT



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Data Type Meaning

Top input 0x, 1x None ON = initiates a standard square root operation

source(top node)

3x, 4x DINT, UDINT

Source value (first of two contiguous registers) The first of two contiguous 3xxxx or 4xxxx registers is entered in the top node. The second register is implied. The source value (the value for which the square root will be derived) is stored here. If you specify a 4xxxx register, the source value may be in the range of 0 through 99,999,99. The low-order half of the value is stored in the implied register, and the high-order half is stored in the displayed register. If you specify a 3xxxx register, the source value may be in the range of 0 through 9,999. The square root calculation is done on only the value in the displayed register; the implied register is required but not used.

result(middle node)

4x DINT, UDINT

Result (first of two contiguous registers)Enter the first of two contiguous 4xxxx registers in the middle node. The second register is implied. The result of the standard square root operation is stored here.The result is stored in the fixed-decimal format: 1234.5600. where the displayed register stores the four-digit value to the left of the first decimal point and the implied register stores the four-digit value to the right of the first decimal point. Numbers after the second decimal point are truncated; no round-off calculations are performed.

SQRT(bottom node)

Selection of the subfunction SQRT


Middle output 0x None ON =source value out of range



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The first of two contiguous 3x or 4x registers is entered in the top node. The second register is implied. The source value, i.e. the value for which the square root will be derived, is stored here.

If you specify a 4x register, the source value may be in the range 0 ... 99 999 99:

If you specify a 3x register, the source value may be in the range 0 ... 9 999:


Enter the first of two contiguous 4x registers in the middle node. The second register is implied. The result of the standard square root operation is stored here in the fixed-decimal format: 1234.5600.:.

Register Content

Displayed The high-order half of the value is stored here.

First implied The low-order half of the value is stored here.

Register Content

Displayed The square root calculation is done on only the value in the displayed register

First implied This register is required but not used.

Register Content

Displayed This register stores the four-digit value to the left of the first decimal point.

First implied This register stores the four-digit value to the right of the first decimal point.

Note: Numbers after the second decimal point are truncated; no round-off calculations are performed.



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75EMTH-SQRTP: Process Square Root

At a Glance

Introduction This chapter describes the EMTH subfunction EMTH-SQRTP.



Topic Page


Representation: EMTH - SQRTP - Double Precision Math - Process Square Root

443


Example 446


EMTH-SQRTP: Process Square Root

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Short Description



The process square root function tailors the standard square root function for closed loop analog control applications. It takes the result of the standard square root result, multiplies it by 63.9922 (the square root of 4 095) and stores that linearized result in the middle-node registers.

The process square root is often used to linearize signals from differential pressure flow transmitters so that they may be used as inputs in closed loop control operations.



043505766 4/2006 443

Representation: EMTH - SQRTP - Double Precision Math - Process Square Root


INITIATES A PROCESSSQUARE ROOT

OPERATION


TOP NODE VALUE OUT OFRANGE

source

linearizedresult

EMTH

SQRTP



444 043505766 4/2006




Data Type Meaning

Top input 0x, 1x None ON = initiates process square root operation

source(top node)

3x, 4x DINT, UDINT Source value (first of two contiguous registers) The first of two contiguous 3xxxx or 4xxxx registers is entered in the top node. The second register is implied. The source value (the value for which the square root will be derived) is stored in these two registers. In order to generate values that have meaning, the source value must not exceed 4095. In a 4xxxx register group the source value will therefore be stored in the implied register, and in a 3xxxx register group the source value will be stored in the displayed register.

linearized result(middle node)

4x DINT, UDINT Linearized result (first of two contiguous registers) The first of two contiguous 4xxxx registers is entered in the middle node. The second register is implied. The linearized result of the process square root operation is stored here. The result is stored in the fixed-decimal format: 1234.5600. where the displayed register stores the four-digit value to the left of the first decimal point and the implied register stores the four-digit value to the right of the first decimal point. Numbers after the second decimal point are truncated; no round-off calculations are performed.

SQRTP(bottom node)

Selection of the subfunction SQRPT


Middle output 0x None ON =source value out of range



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The first of two contiguous 3x or 4x registers is entered in the top node. The second register is implied. The source value, i.e. the value for which the square root will be derived, is stored here. In order to generate values that have meaning, the source value must not exceed 4 095.

If you specify a 4x register:

If you specify a 3x register:

Linearized Result (Middle Node)

The first of two contiguous 4x registers is entered in the middle node. The second register is implied. The linearized result of the process square root operation is stored here n the fixed-decimal format 1234.5600..

Register Content

Displayed Not used

First implied The source value will be stored here

Register Content

Displayed The source value will be stored here

First implied Not used.

Register Content

Displayed This register stores the four-digit value to the left of the first decimal point.

First implied This register stores the four-digit value to the right of the first decimal point.

Note: Numbers after the second decimal point are truncated; no round-off calculations are performed.



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Example

Process Square Root Function

This example gives a quick overview of how the process square root is calculated.

Instruction

Suppose a source value of 2000 is stored in register 300030 of EMTH function SQRTP.

First, a standard square root operation is performed:

Then this result is multiplied by 63.9922, yielding a linearized result of 2861.63:

The linearized result is placed in the two registers in the middle node:

Register Part of the result

400030 2861 (four-digit value to the left of the first decimal point)

400031 6300 (four-digit value to the right of the first decimal point)

300030

400030

EMTH

SQRTP

2000 0044.72=

0044.72 63.9922 2861.63=


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76EMTH-SUBDP: Double Precision Subtraction

At a Glance

Introduction This chapter describes the EMTH subfunction EMTH-SUBDP.



Topic Page


Representation: EMTH - SUBDP - Double Precision Math - Subtraction 449



EMTH-SUBDP: Double Precision Subtraction

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Short Description





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Representation: EMTH - SUBDP - Double Precision Math - Subtraction


TOP NODE > MIDDLENODE

TOP NODE = MIDDLENODE

TOP NODE < MIDDLENODE

SUBTRACTS MIDDLENODE FROM TOP

NODEoperand 1

operand 2/difference

EMTH

SUBDP



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Data Type Meaning

Top input 0x, 1x None ON = subtracts operand 2 from operand 1 and posts difference in designated registers

operand 1(top node)

4x DINT, UDINT

Operand 1 (first of two contiguous registers)The first of two contiguous 4xxxx registers is entered in the top node. The second 4xxxx register is implied. Operand 1 is stored here. Each register holds a value in the range 0000 through 9999, for a combined double precision value in the range of 0 through 99,999,999. The low-order half of operand 1 is stored in the displayed register, and the high-order half is stored in the implied register.

operand 2/ difference(middle node)

4x DINT, UDINT

Operand 2 and difference (first of six contiguous registers)The first of six contiguous 4xxxx registers is entered in the middle node. The remaining five registers are implied:

The displayed register and the first implied register store the high-order and low-order halves of operand 2, respectively, for a combined double precision value in the range 0 through 99,999,999The second and third implied registers store the high-order and low-order halves, respectively, of the absolute difference in double precision formatThe value stored in the fourth implied register indicates whether or not the operands are in the valid range (1 = out of range and 0 = in range)The fifth implied register is not used in this calculation but must exist in state RAM

SUBDP(bottom node)

Selection of the subfunction SUBDP

Top output 0x None ON = operand 1 > operand 2

Middle output 0x None ON = operand 1 = operand 2

Bottom output 0x None ON = operand 1 < operand 2



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Operand 2 and Product (Middle Node)


Register Content

Displayed Register stores the low-order half of operand 1 Range 0 000 ... 9 999, for a combined double precision value in the range 0 ... 99 999 999

First implied Register stores the high-order half of operand 1 Range 0 000 ... 9 999, for a combined double precision value in the range 0 ... 99 999 999

Register Content

Displayed Register stores the low-order half of operand 2 for a combined double precision value in the range 0 ... 99 999 999

First implied Register stores the high-order half of operand 2 for a combined double precision value in the range 0 ... 99 999 999

Second implied This register stores the low-order half of the absolute difference in double precision format

Third implied This register stores the high-order half of the absolute difference in double precision format

Fourth implied 0 = operands in range1 = operands out of range

Fifth implied This register is not used in the calculation but must exist in state RAM.



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77EMTH-SUBFI: Floating Point - Integer Subtraction

At a Glance

Introduction This chapter describes the EMTH subfunction EMTH-SUBFI.



Topic Page


Representation: EMTH - SUBFI - Floating Point minus Integer 455



EMTH-SUBFI: Floating Point - Integer Subtraction

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Short Description





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Representation: EMTH - SUBFI - Floating Point minus Integer




FP

integer anddifference

EMTH

SUBFI

INITIATES FP INTEGEROPERATION



Data Type Meaning

Top input 0x, 1x None ON = initiates FP - integer operation

FP(top node)

4x REAL Floating point value (first of two contiguous registers) The first of two contiguous 4xxxx registers is entered in the top node. The second register is implied. The FP value from which the integer value is subtracted is stored here.

integer and difference(middle node)

4x DINT, UDINT

Integer value and difference (first of four contiguous registers) The first of four contiguous 4xxxx registers is entered in the middle node. The remaining three registers are implied. The displayed register and the first implied register store the double precision integer value to be subtracted from the FP value, and the difference is posted in the second and third implied registers. The difference is posted in FP format.

SUBFI(bottom node)

Selection of the subfunction SUBFI




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Sine of Value (Middle Node)


Register Content


The FP value from which the integer value is subtracted is stored here.

Register Content


Registers store the double precision integer value to be subtracted from the FP value.


The difference is posted here in FP format.


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78EMTH-SUBFP: Floating Point Subtraction

At a Glance

Introduction This chapter describes the EMTH subfunction EMTH-SUBFP.



Topic Page


Representation: EMTH - SUBFP - Floating Point - Subtraction 459



EMTH-SUBFP: Floating Point Subtraction

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Short Description





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Representation: EMTH - SUBFP - Floating Point - Subtraction




value 2and

EMTH

SUBFP

value 1OPERATION SUCCESSFUL

ENABLES FPSUBTRACTION


Data Type Meaning

Top input 0x, 1x None ON = initiates FP value 1 - value 2 subtraction

value 1(top node)

4x REAL Floating point value 1 (first of two contiguous registers). The first of two contiguous 4xxxx registers is entered in the top node. The second register is implied. FP value 1 (the value from which value 2 will be subtracted) is stored here.

value 2 and difference(middle node)

4x REAL Floating point value 2 and the difference (first of four contiguous registers). The first of four contiguous 4xxxx registers is entered in the middle node. The remaining three registers are implied. FP value 2 (the value to be subtracted from value 1) is stored in the displayed register and the first implied register. The difference of the subtraction is stored in FP format in the second and third implied registers.

SUBFP(bottom node)

Selection of the subfunction SUBFP




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Register Content


FP value 1 (the value from which value 2 will be subtracted) is stored here.

Register Content


FP value 2 (the value to be subtracted from value 1) is stored in these registers


The difference of the subtraction is stored here in FP format.


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79EMTH-SUBIF: Integer - Floating Point Subtraction

At a Glance

Introduction This chapter describes the EMTH subfunction EMTH-SUBIF.



Topic Page


Representation: EMTH - SUBIF - Integer minus Floating Point 463



EMTH-SUBIF: Integer - Floating Point Subtraction

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Short Description





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Representation: EMTH - SUBIF - Integer minus Floating Point




integer

FP anddifference

EMTH

SUBIF

INITIATES INTERG-ER - FP OPERA-

TION



Data Type Meaning

Top input 0x, 1x None ON = initiates integer - FP operation

integer(top node)

4x DINT, UDINT

Integer value (first of two contiguous registers)The first of two contiguous 4xxxx registers is entered in the top node. The second register is implied. The double precision integer value from which the FP value is subtracted is stored here.

FP and difference (middle node)

4x REAL FP value and difference (first of four contiguous registers) The first of four contiguous 4xxxx registers is entered in the middle node. The remaining three registers are implied. The displayed register and the first implied register store the FP value to be subtracted from the integer value, and the difference is posted in the second and third implied registers. The difference is posted in FP format.

SUBIF(bottom node)

Selection of the subfunction SUBIF




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FP Value and Difference (Middle Node)


Register Content


The double precision integer value from which the FP value is subtracted is stored here.

Register Content


Registers store the FP value to be subtracted from the integer value.


The difference is posted here in FP format.


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80EMTH-TAN: Floating Point Tangent of an Angle (in Radians)

At a Glance

Introduction This chapter describes the EMTH subfunction EMTH-TAN.



Topic Page


Representation: EMTH - TAN - Tangent of an Angle (in Radians) 467



EMTH-TAN: Floating Point Tangent of an Angle (in Radians)

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Short Description





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Representation: EMTH - TAN - Tangent of an Angle (in Radians)




value

tangent ofvalue

EMTH

TAN


CALCULATES THETANGENT OF THEFLOATING POINT

VALUE


Data Type Meaning

Top input 0x, 1x None ON = calculates the tangent of the value

value(top node)

4x REAL FP value indicating the value of an angle in radians (first of two contiguous registers)The first of two contiguous 4xxxx registers is entered in the top node. The second register is implied. A value in FP format indicating the value of an angle in radians is stored here.The magnitude of this value must be < 65536.0; if not:

The tangent is not computedAn invalid result is returnedAn error is flagged in the EMTH ERLOG function

tangent of value(middle node)

4x REAL Tangent of the value in the top node (first of four contiguous registers)

TAN(bottom node)

Selection of the subfunction TAN




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If the magnitude is 65 536.0:The tangent is not computedAn invalid result is returnedAn error is flagged in the EMTH-ERLOG function

Tangent of Value (Middle Node)


Register Content



Register Content




The tangent of the value in the top node is posted here in FP format.



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81ESI: Support of the ESI Module

At a Glance

Introduction This chapter describes the instruction ESI.



Topic Page


Representation 471


READ ASCII Message (Subfunction 1) 475

WRITE ASCII Message (Subfunction 2) 479

GET DATA (Subfunction 3) 480

PUT DATA (Subfunction 4) 482

ABORT (Middle Input ON) 486

Run Time Errors 487


ESI: Support of the ESI Module

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Short Description


The instruction for the ESI module 140 ESI 062 10 are optional loadable instructions that can be used in a Quantum controller system to support operations using a ESI module. The controller can use the ESI instruction to invoke the module. The power of the loadable is its ability to cause a sequence of commands over one or more logic scans.

With the ESI instruction, the controller can invoke the ESI module to:Read an ASCII message from a serial port on the ESI module, then perform a sequence of GET DATA transfers from the module to the controller.Write an ASCII message to a serial port on the ESI module after having performed a sequence of PUT DATA transfers to the variable data registers inthe module.Perform a sequence of GET DATA transfers (up to 16 384 registers of data from the ESI module to the controller); one Get Data transfer will move up to 10 data registers each time the instruction is solved.Perform a sequence of PUT DATA (up to 16 384 registers of data to the ESI module from the controller). One PUT DATA transfer moves up to 10 registers of data each time the instruction is solved.Abort the ESI loadable command sequence running.

Note: This instruction is only available if you have unpacked and installed the DX Loadables. For further information, see p. 101."

Note: After placing the ESI instruction in your ladder diagram you must enter the top, middle and bottom parameters. Proceed by double clicking on the instruction. This action produces a form for the entry of the 3 paramteers. This parametric must be completed to enable the DX zoom function in the Edit menu pulldown.



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Representation




subfunction #(1 ... 4)

subfunctionparameters

ESI

length


Data Type Meaning

Top input 0x, 1x None ON = enables the subfunction

Middle input 0x, 1x None Abort current message

subfunction(top node

4x INT, UINT, WORD

Number of possible subfunction, range 1 ... 4

subfunction parameters(middle node)

4x INT, UINT, WORD

First of eighteen contiguous 4x holding registers which contain the subfunction parameters

lengthbottom node

INT, UINT Number of subfunction parameter registers, i.e. the length of the table in the middle node

Top output 0x None Echoes state of the top input

Middle output 0x None ON = operation done

Bottom output 0x None ON = error detected



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Top Input When the input to the top node is powered ON, it enables the ESI instruction and starts executing the command indicated by the subfunction code in the top node.

Middle Input When the input to the middle node is powered ON, an Abort command is issued. If a message is running when the ABORT command is received, the instruction will complete; if a data transfer is in process when the ABORT command is received, the transfer will stop and the instruction will complete.

Subfunction # (Top Node)

The top node may contain either a 4x register or an integer. The integer or the value in the register must be in the range 1 ... 4.

It represents one of four possible subfunction command sequences to be executed by the instruction:

Subfunction Parameters (Middle Node)

The first of eighteen contiguous 4x registers is entered in the middle node. The ramaining seventeen registers are implied.

The following subfunction parameters are available:

Subfunction Command Sequence

1 One command (READ p. 475) followed by multiple GET DATA commands

2 Multiple PUT DATA commands followed by one command (See p. 479)

3 Zero or more commands (GET DATA p. 480)

4 Zero or more commands (PUT DATA p. 482)

Note: A fifth command, (ABORT ASCII Message (See p. 486)), can be initiated by enabling the middle input to the ESI instruction.

Register Parameter Contents

Displayed ESI status register Returned error codes

First implied Address of the first 4x register in the command structure

Register address minus the leading 4 and any leading zeros, as specified in the I/O Map (e.g., 1 represents register 400001)

Second implied

Address of the first 3x register in the command structure

Register address minus the leading 3 and any leading zeros, as specified in the I/O Map (e.g., 7 represents register 300007)



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Length (Bottom Node)

The bottom node contains the length of the table in the middle node, i.e., the number of subfunction parameter registers. For READ/ WRITE operations, the length must be 10 registers. For PUT/GET operations, the required length is eight registers; 10 may be specified and the last two registers will be unused.

Third implied Address of the first 4x register in the controller's data register area

Register address minus the leading 4 and any leading zeros (e.g., 100 representing register 400100)

Fourth implied Address of the first 3x register in the controller's data register area

Register address minus the leading 3 and any leading zeros (e.g., 1000 representing register 301000)

Fifth implied Starting register for data register area in module

Number in the range 0 ... 3FFF hex

Sixth implied Data transfer count Number in the range 0 ... 4000 hex

Seventh implied

ESI timeout value, in 100 ms increments

Number in the range 0 ... FFFF hex, where 0 means no timeout

Eighth implied ASCII message number Number in the range 1 ... 255 dec

Ninth implied ASCII port number 1 or 2

Note: The registers below are internally used by the ESI loadable. Do not write registers while the ESI loadable is running. For best use, initialize these registers to 0 (zero) when the loadable is inserted into logic.

10th implied ESI loadable previous scan power in state

11th implied Data left to transfer

12th implied Current ASCII module command running

13th implied ESI loadable sequence number

14th implied ESI loadable flags

15th implied ESI loadable timeout value (MSW)

16th implied ESI loadable timeout value (LSW)

17th implied Parameter Table Checksum generated by ESI loadable

Note: Once power has been applied to the top input, the ESI loadable starts running. Until the ESI loadable compiles (successfully or in error), the subfunction parameters should not be modified. If the ESI loadable detects a change, the loadable will compile in error (Parameter Table).

Register Parameter Contents



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Ouptuts

Middle Output The middle output goes ON for one scan when the subfunction operation specified in the top node is completed, timed out, or aborted

Bottom Output The bottom output goes ON for one scan if an error has been detected. Error checking is the first thing that is performed on the instruction when it is enabled, it it is completed before the subfunction is executed. For more details, see p. 487.

Note: NSUP must be loaded before ESI in order for the loadable to work properly. If ESI is loaded before NSUP or ESI is loaded alone, all three outputs will be turned ON.



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READ ASCII Message (Subfunction 1)

READ ASCII Message

A READ ASCII command causes the ESI module to read incoming data from one of its serial ports and store the data in internal variable data registers. The serial port number is specified in the tenth (ninth implied) register of the subfunction parameters table. The ASCII message number to be read is specified in the ninth (eighth implied) register of the subfunction parameters table. The received data is stored in the 16K variable data space in user-programmed formats.

When the top node of the ESI instruction is 1, the controller invokes the module and causes it to execute one READ ASCII command followed by a sequence of GET DATA commands (transferring up to 16,384 registers of data) from the module to the controller.

Command Structure

Command Structure

Response Structure

Command Structure

Word Content (hex) Meaning

0 01PD P = port number (1 or 2); D = data count

1 xxxx Starting register number, in the range 0 ... 3FFF

2 00xx Message number, where xx is in the range 1 ... FF (1 ... 255 dec)

3 ... 11 Not used


0 01PD Echoes command word 0

1 xxxx Echoes starting register number from Command Word 1

2 00xx Echoes message number from Command Word 2

3 xxxx Data word 1

4 xxxx Data word 2

... ... ...

11 xxxx Module status or data word 9



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A Comparative READ ASCII Message/Put Data Example

Below is an example of how an ESI loadable instruction can simplify your logic programming task in an ASCII read application. Assume that the 12-point bidirectional ESI module has been I/O mapped to 400001 ... 400012 output registers and 300001 ... 300012 input registers. We want to read ASCII message #10 from port 1, then transfer four words of data to registers 400501 ... 400504 in the controller.

Parameterizing of the ESI instruction:

The subfunction parameter table begins at register 401000 . Enter the following parameters in the table:

With these parameters entered to the table, the ESI instruction will handle the read and data transfers automatically in one scan.

Register Parameter Value Description

401000 nnnn ESI status register

401001 1 I/O mapped output starting register (400001)

401002 1 I/O mapped input starting register (300001)

401003 501 Starting register for the data transfer (400501)

401004 0 No 3x starting register for the data transfer

401005 100 Module start register

401006 4 Number of registers to transfer

401007 600 timeout = 60 s

401008 10 ASCII message number

401009 1 ASCII port number

401010-17 N/A Internal loadable variables

#0001

401000

ESI

#0018



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Read and Data Transfers without ESI Instruction

The same task could be accomplished in ladder logic without the ESI loadable, but it would require the following three networks to set up the command and transfer parameters, then copy the data. Registers 400101 ... 400112 are used as workspace for the output values. Registers 400201 ... 400212 are initial READ ASCII Message command values. Registers 400501 ... 400504 are the data space for the received data from the module.

First Network

Contents of registers

The first network starts up the READ ASCII Message command by turning ON coil 000011 forever. It moves the READ ASCII Message command into the workspace, then moves the workspace to the output registers for the module.

Second Network

Register Value (hex) Description

400201 0114 READ ASCII Message command, Port 1, Four registers

400202 0064 Module’s starting register

400203 nnnn Not valid: data word 1

... ... ...


000011 000011

000011

BLKM

400101

#0012

400201

BLKM

400001

#0012

400101

000011

BLKM

400098

#0001

300001

AND

400098

#0001

400088

TEST

400101

#0001

400098

TEST

400102

#0001

300002

BLKM

400099

#0001

300001

AND

400099

#0001

400089 TEST

#32768

#0001

400099

000020

000012



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As long as coil 000011 is ON, READ ASCII Message response Word 0 in the input register is tested to make sure it is the same as command Word 0 in the workspace. This is done by ANDing response Word 0 in the input register with 7FFF hex to get rid of the Status Word Valid bit (bit 15) in Response Word 0.

The module start register in the input register is also tested against the module start register in the workspace to make sure that are the same.

If both these tests show matches, test the Status Word Valid bit in response Word 0. To do this, AND response Word 0 in the input register with 8000 hex to get rid of the echoed command word 0 information. If the ANDed result equals the Status Word Valid bit, coil 000020 is turned ON indicating an error and/or status in the Module Status Word. If the ANDed result is not the status word valid bit, coil 000012 is turned ON indicating that the message is done and that you can start another command in the module.

Third Network

If coil 000020 is ON, this third network will test the Module Status Word for busy status. If the module is busy, do nothing. If the Module Status Word is greater than 1 (busy), a detected error has been logged in the high byte and coil 000099 will be turned ON. At this point, you need to determine what the error is using some error-handling logic that you have developed.


400098 nnnn Workspace for response word

400099 nnnn Workspace for response word

400088 7FFF Response word mask

400089 8000 Status word valid bit mask

000020

TEST

#0001

#0001

300012

000099



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WRITE ASCII Message (Subfunction 2)

WRITE ASCII Message

In a WRITE ASCII Message command, the ESI module writes an ASCII message to one of its serial ports. The serial port number is specified in the tenth (ninth implied) register of the subfunction parameters table. The ASCII message number to be written is specified in the ninth (eighth implied) register of the subfunction parameters table.

When the top node of the ESI instruction is 2, the controller invokes the module and causes it to execute one Write ASCII command. Before starting the WRITE command, subfunction 2 executes a sequence of PUT DATA transfers (transferring up to 16 384 registers of data) from the controller to the module.

Command Structure

Command Structure

Response Structure

Response Structure


0 02PD P = port number (1 or 2); D = data count


2 00xx Message number, where xx is in the range 1 ... FF (1 ... 255 dec)

3 xxxx Data word 1

4 xxxx Data word 2

... ... ...

11 xxxx Data word 9


0 02PD Echoes command word 0

1 xxxx Echoes starting register number from command word 1

2 00xx Echoes message number from command word 2

3 0000 Returns a zero

... ... ...


11 xxxx Module status



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GET DATA (Subfunction 3)

GET DATA A GET DATA command transfers up to 10 registers of data from the ESI module to the controller each time the ESI instruction is solved in ladder logic. The total number of words to be read is specified in Word 0 of the GET DATA command structure (the data count). The data is returned in increments of 10 in Words 2 ... 11 in the GET DATA response structure.

If a sequence of GET DATA commands is being executed in conjunction with a READ ASCII Message command (via subfunction 1), up to nine registers are transferred when the instruction is solved the first time. Additional data are returned in groups of ten registers on subsequent solves of the instruction until all the data has been transferred

If there is an error condition to be reported (other than a command syntax error), it is reported in Word 11 in the GET DATA response structure. If the command has requested 10 registers and the error needs to be reported, only nine registers of data will be returned in Words 2 ... 10, and Word 11 will be used for error status.

Command Structure

Command Structure

Note: If the data count and starting register number that you specify are valid but some of the registers to be read are beyond the valid register range, only data from the registers in the valid range will be read. The data count returned in Word 0 of the response structure will reflect the number of valid data registers returned, and an error code (1280 hex) will be returned in the Module Status Word (Word 11 in the response table).


0 030D D = data count


2 ... 11 Not used



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Response Structure

Response Structure


0 030D Echoes command word 0


2 xxxx Data word 1

3 xxxx Data word 2

... ... ...

11 xxxx Module status or data word 10



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PUT DATA (Subfunction 4)

PUT DATA A PUT DATA command writes up to 10 registers of data to the ESI module from the controller each time the ESI instruction is solved in ladder logic. The total number of words to be written is specified in Word 0 of the PUT DATA command structure (the data count).

The data is returned in increments of 10 in words 2 ... 11 in the PUT DATA command structure. The command is executed sequentially until command word 0 changes to another command other than PUT DATA (040D hex).

Command Structure

Command Structure

Response Structure

Response Structure

Note: If the data count and starting register number that you specify are valid but some of the registers to be written are beyond the valid register range, only data from the registers in the valid range will be written. The data count returned in Word 0 of the response structure will reflect the number of valid data registers returned, and an error code (1280 hex) will be returned in the Module Status Word (Word 11 in the response table).


0 040D D = data count


2 xxxx Data word 1

3 xxxx Data word 2

... ... ...

11 xxxx Data word 10


0 040D Echoes command word 0



... ... ...





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A Comparative PUT DATA Example

Below is an example of how an ESI loadable instruction can simplify your logic programming task in a PUT DATA application. Assume that the 12-point bidirectional ESI 062 module has been I/O mapped to 400001 ... 400012 output registers and 300001 ... 300012 input registers. We want to put 30 controller data registers, starting at register 400501, to the ESI module starting at location 100.

Parameterizing of the ESI instruction:

The subfunction parameter table begins at register 401000 . Enter the following parameters in the table:

With these parameters entered to the table, the ESI instruction will handle the data transfers automatically over three ESI logic solves.

Register Parameter Value Description

401000 nnnn ESI status register

401001 1 I/O mapped output starting register (400001)

401002 1 I/O mapped input starting register (300001)

401003 501 Starting register for the data transfer (400501)

401004 0 No 3x starting register for the data transfer

401005 100 Module start register

401006 30 Number of registers to transfer

401007 0 timeout = never

401008 N/A ASCII message number

401009 N/A ASCII port number

401009 N/A Internal loadable variables

#0004

401000

ESI

#0018



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Handling of Data Transfer without ESI Instruction

The same task could be accomplished in ladder logic without the ESI loadable, but it would require the following four networks to set up the command and transfer parameters, then copy data multiple times until the operation is complete. Registers 400101 ... 400112 are used as workspace for the output values. Registers 400201 ... 400212 are initial PUT DATA command values. Registers 400501 ... 400530 are the data registers to be sent to the module.

First Network - Command Register Network


The first network starts up the transfer of the first 10 registers by turning ON coil 000011 forever. It moves the initial PUT DATA command into the workspace, moves the first 10 registers (400501 ... 400510) into the workspace, and then moves the workspace to the output registers for the module.

Second Network - Command Register Network


400201 040A PUT DATA command, 10 registers

400202 0064 Module’s starting register


... ... ...


000011 000011

000011

BLKM

400101

#0012

400201

BLKM

400103

#0010

400501

BLKM

400001

#0012

400101

000020 000020

000011

TEST

400101

#0001

300001

TEST

400102

#0001

300002

TEST

#0120

#0001

400102

000020

000012



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As long as coil 000011 is ON and coil 000020 is OFF, PUT DATA response word 0 in the input register is tested to make sure it is the same as the command word in the workspace. The module start register in the input register is also tested to make sure it is the same as the module start register in the workspace.

If both these tests show matches, the current module start register is tested against what would be the module start register of the last PUT DATA command for this transfer. If the test shows that the current module start register is greater than or equal to the last PUT DATA command, coil 000020 goes ON indicating that the transfer is done. If the test shows that the current module start register is less than the last PUT DATA command, coil 000012 indicating that the next 10 registers should be transferred.

Third Network - Command Register Network

As long as coil 000012 is ON, there is more data to be transferred. The module start register needs to be tested from the last command solve to determine which set of 10 registers to transfer next. For example, if the last command started with module register 400110, then the module start register for this command is 400120.

Fourth Network - Command Register Network

As long as coil 000012 is ON, add 10 to the module start register value in the workspace and move the workspace to the output registers for the module to start the next transfer of 10 registers.

000012

TEST

#0100

#0001

400102

BLKM

400103

#0010

400511

TEST

#0110

#0001

400102

BLKM

400103

#0010

400521

000012

AD16

400102

400102

#0010

BLKM

400001

#0012

400101



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ABORT (Middle Input ON)

ABORT When the middle input to the ESI instruction is powered ON, the instruction aborts a running ASCII READ or WRITE message. The serial port buffers of the module are not affected by the ABORT, only the message that is currently running.

Command Structure

Command Structure

Response Structure

Response Structure

Word Content (hex)

0 0900

1 ... 11 not used


0 0900 Echoes command word 0


... ... ...





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Run Time Errors

Run Time Errors The command sequence executed by the ESI module (specified by the subfunction value in the top node of the ESI instruction) needs to go through a series of error checking routines before the actual command execution begins. If an error is detected, a message is posted in the register displayed in the middle node.

The following table lists possible error message codes and their meanings:

Once the parameter error checking has completed without finding an error, the ESI module begins to execute the command sequence.

Error Code (dec) Meaning

0001 Unknown subfunction specified in the top node

0010 ESI instruction has timed out (exceeded the time specified in the eighth register of the subfunction parameter table)

0101 Error in the READ ASCII Message sequence

0102 Error in the WRITE ASCII Message sequence

0103 Error in the GET DATA sequence

0104 Error in the PUT DATA sequence

1000 Length (Bottom Node) is too small

1001 Nonzero value in both the 4x and 3x data offset parameters

1002 Zero value in both the 4x and 3x data offset parameters

1003 4x or 3x data offset parameter out of range

1004 4x or 3x data offset plus transfer count out of range

1005 3x data offset parameter set for GET DATA

1006 Parameter Table Checksum error

1101 Output registers from the offset parameter out of range

1102 Input registers from the offset parameter out of range

2001 Error reported from the ESI module



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82EUCA: Engineering Unit Conversion and Alarms

At a Glance

Introduction This chapter describes the instrcution EUCA.



Topic Page


Representation: EUCA - Engineering Unit and Alarm 491


Examples 494


EUCA: Engineering Unit Conversion and Alarms

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Short Description


The use of ladder logic to convert binary-expressed analog data into decimal units can be memory-intensive and scan-time intensive operation. The Engineering Unit Conversion and Alarms (EUCA) loadable is designed to eliminate the need for extra user logic normally required for these conversions. EUCA scales 12 bits of binary data (representing analog signals or other variables) into engineering units that are readily usable for display, data logging, or alarm generation.

Using Y = mX + b linear conversion, binary values between 0 ... 4095 are converted to a scaled process variable (SPV). The SPV is expressed in engineering units in the range 0 ... 9 999.

One EUCA instruction can perform up to four separate engineering unit conversions.

It also provides four levels of alarm checking on each of the four conversions:

Note: This instruction is only available if you have unpacked and installed the DX Loadables. For further information, see p. 101."

Level Meaning

HA High absolute

HW High warning

LW Low warning

LA Low absolute



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Representation: EUCA - Engineering Unit and Alarm




CONTROL INPUT

ALARM IN

ERROR IN

ACTIVE

ALARM

ERROR

alarm status

parametertable

EUCA

nibble #(1 ... 4)


Data Type Meaning

Top input 0x, 1x None ON initiates the conversion

Middle input 0x, 1x None Alarm input

Bottom input 0x, 1x None Error input

alarm status(top node)

4x INT, UINT Alarm status for as many as four EUCA conversions (For more information please see p. 492.)

parameter table(middle node)

4x INT, UINT, First of nine contiguous holding registers in the EUCA parameter table(For more information please see p. 493.)

nibble # (1...4)(bottom node)

INT, UINT Integer value, indicates which one of the four nibbles in the alarm status register to use

Top output 0x None Echoes the state of the top input

Middle output 0x None ON if the middle input is ON or if the result of the EUCA conversion crosses a warning level

Bottom output 0x None ON if the bottom input is ON or if a parameter is out of range



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Alarm Status (Top Node)

The 4x register entered in the top node displays the alarm status for as many as four EUCA conversions, which can be performed by the instruction. The register is segmented into four four-bit nibbles. Each four-bit nibble represents the four possible alarm conditions for an individual EUCA conversion.

The most significant nibble represents the first conversion, and the least significant nibble represents the fourth conversion:

Alarm Setting Condition of alarm setting

Only one alarm condition can exist in any EUCA conversion at any given time. If the SPV exceeds the high warning level the HW bit will be set. If the HA is exceeded, the HW bit is cleared and the HA bit is set. The alarm bit will not change after returning to a less severe condition until the deadband (DB) area has also been exited.

HA1 HA2HW1 LW1 LA1 HW2 LW2 LA2 HA3 HA4HW3 LW3 LA3 HW4 LW4 LA4

Nibble 1(first conversion)

Nibble 2(second conversion)

Nibble 3(third conversion)

Nibble 4(fourth conversion)

Alarm type Condition

HA An HA alarm is set when the SPV exceeds the user-defined high alarm value expressed in engineering units

HW An HW alarm is set when SPV exceeds a user-defined high warning value expressed in engineering units

LW An LW alarm is set when SPV is less than a user-defined low warning value expressed in engineering units

LA An LA alarm is set when SPV is less than a user-defined low alarm value expressed in engineering units



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Parameter Table (Middle Node)

The 4x register entered in the middle node is the first of nine contiguous holding registers in the EUCA parameter table:

Register Content Range

Displayed Binary value input by the user 0 ... 4 095

First implied SPV calculated by the EUCA block

Second implied High engineering unit (HEU), maximum SPV required and set by the user (top of the scale)

LEU < HEU 99 999

Third implied Low engineering unit (LEU), minimum SPV required and set by the user (bottom end of the scale)

0 LEU < HEU

Fourth implied DB area in SPV units, below HA levels and above LA levels that must be crossed before the alarm status bit will reset

0 DB < (HEU - LEU)

Fifth implied HA alarm value in SPV units HW < HA HEU

Sixth implied HW alarm value in SPV units LW < HW < HA

Seventh implied LW alarm value in SPV units LA < LW < HW

Eighth implied LA alarm value in SPV units LEU LA < LW

Note: An error is generated if any value is out of the range defined above



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Examples

Overview The following examples are shown.Principles of EUCA Operation (example 1)Use in a Drive System (example 2)Four EUCA conversions together (example 3)

Example 1 This example demonstrates the principles of EUCA operation. The binary value is manually input in the displayed register in the middle node, and the result is visually available in the SPV register (the first implied register in the middle node).

The illustration below shows an input range equivalent of a 0 ... 100 V measure, corresponding to the whole binary 12-bit range:

A range of 0 ... 100 V establishes 50 V for nominal operation. EUCA provides a margin on the nominal side of both warning and alarm levels (deadband). If an alarm threshold is exceeded, the alarm bit becomes active and stays active until the signal becomes greater (or less) than the DB setting -5 V in this example.

MSB

unused

11111111 1111

LSB

= 4095 or FFF hex

00000000 0000 = 0 or 000 hex

(Displayed register inthe middle node)

100V

90

80

70

60

50

40

30

20

10

0 V



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Programming the EUCA block is accomplished by selecting the EUCA loadable and writing in the data as illustrated in the figure below:

Reference Data

The nine middle-node registers are set using the reference data editor. DB is 5 V followed by 10 V increments of high and low warning. The actual high and low alarm is set at 20 V above and below nominal.

On a graph, the example looks like this:

Register Meaning Content

400440 STATUS 0000000000000000

400450 INPUT 1871 DEC

400451 SPV 46 DEC

400452 HIGH_unit 100 DEC

400453 LOW_unit 0 DEC

400454 Dead_band 5 DEC

400455 HIGH_ALARM 70 DEC

400456 HIGH_WARN 60 DEC

400457 LOW_ALARM 40 DEC

400458 LOW_WARN 30 DEC

400440

400450

EUCA

# 0001

= Dead Band

100V

90

80

70

60

50

40

30

20

10

0 V

46 *

High Alarm

High Warning

Normal

Low Warning

Low Alarm



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You can now verify the instruction in a running PLC by entering values in register 400450 that fall into the defined ranges. The verification is done by observing the bit change in register 400440 where:

Example 2 If the input of 0 ... 4095 indicates the speed of a drive system of 0 ... 5000 rpm, you could set up a EUCA instruction as follows.

The binary value in 400210 results in an SPV of 4835 decimal, which exceeds the high absolute alarm level, sets the HA bit in 400209, and powers the EUCA alarm node.

Instruction

Note: The example value shows a decimal 46, which is in the normal range. No alarm is set, i.e., register 400440 = 0.

1 = Low alarm1 = Low warning1 = High warning1 = High alarm

Parameter Speed

Maximum Speed 5 000 rpm

Minimum Speed 0 rpm

DB 100 rpm

HA Alarm 4 800 rpm

HW Alarm 4 450 rpm

LW Alarm 2 000 rpm

LA Alarm 1 200 rpm

400209

400210

EUCA

# 0001



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Reference Data

The N.O. contact is used to suppress alarm checks when the drive system is shutdown, or during initial start up allowing the system to get above the Low alarm RPM level.

Varying the binary value in register 400210 would cause the bits in nibble 1 of register 400209 to correspond with the changes illustrated above. The DB becomes effective when the alarm or warning has been set, then the signal falls into the DB zone.


400209 STATUS 1000000000000000

400210 INPUT 3960 DEC

400211 SPV 4835 DEC

400212 MAX_SPEED 5000 DEC

400213 MIN_SPEED 0 DEC

400214 Dead_band 100 DEC

400215 HIGH_ALARM 4800 DEC

400216 HIGH_WARN 4450 DEC

400217 LOW_ALARM 2000 DEC

400218 LOW_WARN 1200 DEC

5000 rqm4950490048504800475047004650460045504500445044004350430042504200

0

High Absolute400209 = 8000 hex

Warning - DB400209 = 4000 hexHigh Warning

400209 = 4000 hex*

Return to normal400209 = 0000 hex*

*

*

*

*

**

**

*

*

*

*

**

*

*



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The alarm is maintained, thus taking what would be a switch chatter condition out of a marginal signal level. This point is exemplified in the chart above, where after setting the HA alarm and returning to the warning level at 4700 the signal crosses in and out of DB at the warning level (4450) but the warning bit in 400209 stays ON.

The same action would be seen if the signal were generated through the low settings.

Example 3 You can chain up to four EUCA conversions together to make one alarm status register. Each conversion writes to the nibble defined in the block bottom node. In the program example below, each EUCA block writes it‘s status (based on the table values for that block) into a four bit (nibble) of the status register 400209.

Reference Data

The status register can then be transferred using a BLKM instruction to a group of discretes wired to illuminate lamps in an alarm enunciator panel.

As you observe the status content of register 400209 you see: no alarm in block 1, an LW alarm in block 2, an HW alarm in Block 3, and an HA alarm in block 4.


400209 STATUS 0000001001001000

400209

EUCA

400220

# 0002

400209

EUCA

400230

# 0003

400209

EUCA

400240

# 0004

000002

000023

000023400209

BLKM

000033

# 1

000004

400209

EUCA

400210

# 0001000003



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The alarm conditions for the four blocks can be represented with the following table settings:

Conversion 1 Conversion 2 Conversion 3 Conversion 4

Input 400210 = 2048 400220 = 1220 400230 = 3022 400240 = 3920

Scaled # 400211 = 2501 400221 = 1124 400231 = 7379 400241 = 0770

HEU 400212 = 5000 400222 = 3300 400232 = 9999 400242 = 0800

LEU 400213 = 0000 400223 = 0200 400233 = 0000 400243 = 0100

DB 400214 = 0015 400224 = 0022 400234 = 0100 400244 = 0006

Hi Alarm 400215 = 40000 400225 = 2900 400235 = 8090 400245 = 0768

Hi Warn 400216 = 3500 400226 = 2300 400236 = 7100 400246 = 0680

Lo Warn 400217 = 2000 400227 = 1200 400237 = 3200 400247 = 0280

Lo Alarm 400218 = 1200 400228 = 0430 400238 = 0992 400248 = 0230



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Glossary

active window The window, which is currently selected. Only one window can be active at any one given time. When a window is active, the heading changes color, in order to distinguish it from other windows. Unselected windows are inactive.

Actual parameter Currently connected Input/Output parameters.

Addresses (Direct) addresses are memory areas on the PLC. These are found in the State RAM and can be assigned input/output modules.The display/input of direct addresses is possible in the following formats:

Standard format (400001)Separator format (4:00001)Compact format (4:1)IEC format (QW1)

ANL_IN ANL_IN stands for the data type "Analog Input" and is used for processing analog values. The 3x References of the configured analog input module, which is specified in the I/O component list is automatically assigned the data type and should therefore only be occupied by Unlocated variables.

ANL_OUT ANL_OUT stands for the data type "Analog Output" and is used for processing analog values. The 4x-References of the configured analog output module, which is specified in the I/O component list is automatically assigned the data type and should therefore only be occupied by Unlocated variables.

ANY In the existing version "ANY" covers the elementary data types BOOL, BYTE, DINT, INT, REAL, UDINT, UINT, TIME and WORD and therefore derived data types.

A


Glossary

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ANY_BIT In the existing version, "ANY_BIT" covers the data types BOOL, BYTE and WORD.

ANY_ELEM In the existing version "ANY_ELEM" covers the elementary data types BOOL, BYTE, DINT, INT, REAL, UDINT, UINT, TIME and WORD.

ANY_INT In the existing version, "ANY_INT" covers the data types DINT, INT, UDINT and UINT.

ANY_NUM In the existing version, "ANY_NUM" covers the data types DINT, INT, REAL, UDINT and UINT.

ANY_REAL In the existing version "ANY_REAL" covers the data type REAL.

Application window

The window, which contains the working area, the menu bar and the tool bar for the application. The name of the application appears in the heading. An application window can contain several document windows. In Concept the application window corresponds to a Project.

Argument Synonymous with Actual parameters.

ASCII mode American Standard Code for Information Interchange. The ASCII mode is used for communication with various host devices. ASCII works with 7 data bits.

Atrium The PC based controller is located on a standard AT board, and can be operated within a host computer in an ISA bus slot. The module occupies a motherboard (requires SA85 driver) with two slots for PC104 daughter boards. From this, a PC104 daughter board is used as a CPU and the others for INTERBUS control.


Glossary

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Back up data file (Concept EFB)

The back up file is a copy of the last Source files. The name of this back up file is "backup??.c" (it is accepted that there are no more than 100 copies of the source files. The first back up file is called "backup00.c". If changes have been made on the Definition file, which do not create any changes to the interface in the EFB, there is no need to create a back up file by editing the source files (Objects Source). If a back up file can be assigned, the name of the source file can be given.

Base 16 literals Base 16 literals function as the input of whole number values in the hexadecimal system. The base must be denoted by the prefix 16#. The values may not be preceded by signs (+/-). Single underline signs ( _ ) between figures are not significant.

Example 16#F_F or 16#FF (decimal 255)16#E_0 or 16#E0 (decimal 224)

Base 8 literal Base 8 literals function as the input of whole number values in the octal system. The base must be denoted by the prefix 3.63kg. The values may not be preceded by signs (+/-). Single underline signs ( _ ) between figures are not significant.

Example 8#3_1111 or 8#377 (decimal 255) 8#34_1111 or 8#340 (decimal 224)

Basis 2 literals Base 2 literals function as the input of whole number values in the dual system. The base must be denoted by the prefix 0.91kg. The values may not be preceded by signs (+/-). Single underline signs ( _ ) between figures are not significant.

Example 2#1111_1111 or 2#11111111 (decimal 255) 2#1110_1111 or 2#11100000 (decimal 224)

Binary connections

Connections between outputs and inputs of FFBs of data type BOOL.

Bit sequence A data element, which is made up from one or more bits.

BOOL BOOL stands for the data type "Boolean". The length of the data elements is 1 bit (in the memory contained in 1 byte). The range of values for variables of this type is 0 (FALSE) and 1 (TRUE).

B


Glossary

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Bridge A bridge serves to connect networks. It enables communication between nodes on the two networks. Each network has its own token rotation sequence – the token is not deployed via bridges.

BYTE BYTE stands for the data type "Bit sequence 8". The input appears as Base 2 literal, Base 8 literal or Base 1 16 literal. The length of the data element is 8 bit. A numerical range of values cannot be assigned to this data type.

Cache The cache is a temporary memory for cut or copied objects. These objects can be inserted into sections. The old content in the cache is overwritten for each new Cut or Copy.

Call up The operation, by which the execution of an operation is initiated.

Coil A coil is a LD element, which transfers (without alteration) the status of the horizontal link on the left side to the horizontal link on the right side. In this way, the status is saved in the associated Variable/ direct address.

Compact format (4:1)

The first figure (the Reference) is separated from the following address with a colon (:), where the leading zero are not entered in the address.

Connection A check or flow of data connection between graphic objects (e.g. steps in the SFC editor, Function blocks in the FBD editor) within a section, is graphically shown as a line.

Constants Constants are Unlocated variables, which are assigned a value that cannot be altered from the program logic (write protected).

Contact A contact is a LD element, which transfers a horizontal connection status onto the right side. This status is from the Boolean AND- operation of the horizontal connection status on the left side with the status of the associated Variables/direct Address. A contact does not alter the value of the associated variables/direct address.

C


Glossary

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Data transfer settings

Settings, which determine how information from the programming device is transferred to the PLC.

Data types The overview shows the hierarchy of data types, as they are used with inputs and outputs of Functions and Function blocks. Generic data types are denoted by the prefix "ANY".

ANY_ELEMANY_NUMANY_REAL (REAL)ANY_INT (DINT, INT, UDINT, UINT)ANY_BIT (BOOL, BYTE, WORD)TIME

System data types (IEC extensions)Derived (from "ANY" data types)

DCP I/O station With a Distributed Control Processor (D908) a remote network can be set up with a parent PLC. When using a D908 with remote PLC, the parent PLC views the remote PLC as a remote I/O station. The D908 and the remote PLC communicate via the system bus, which results in high performance, with minimum effect on the cycle time. The data exchange between the D908 and the parent PLC takes place at 1.5 Megabits per second via the remote I/O bus. A parent PLC can support up to 31 (Address 2-32) D908 processors.

DDE (Dynamic Data Exchange)

The DDE interface enables a dynamic data exchange between two programs under Windows. The DDE interface can be used in the extended monitor to call up its own display applications. With this interface, the user (i.e. the DDE client) can not only read data from the extended monitor (DDE server), but also write data onto the PLC via the server. Data can therefore be altered directly in the PLC, while it monitors and analyzes the results. When using this interface, the user is able to make their own "Graphic-Tool", "Face Plate" or "Tuning Tool", and integrate this into the system. The tools can be written in any DDE supporting language, e.g. Visual Basic and Visual-C++. The tools are called up, when the one of the buttons in the dialog box extended monitor uses Concept Graphic Tool: Signals of a projection can be displayed as timing diagrams via the DDE connection between Concept and Concept Graphic Tool.

D


Glossary

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Decentral Network (DIO)

A remote programming in Modbus Plus network enables maximum data transfer performance and no specific requests on the links. The programming of a remote net is easy. To set up the net, no additional ladder diagram logic is needed. Via corresponding entries into the Peer Cop processor all data transfer requests are met.

Declaration Mechanism for determining the definition of a Language element. A declaration normally covers the connection of an Identifier with a language element and the assignment of attributes such as Data types and algorithms.

Definition data file (Concept EFB)

The definition file contains general descriptive information about the selected FFB and its formal parameters.

Derived data type Derived data types are types of data, which are derived from the Elementary data types and/or other derived data types. The definition of the derived data types appears in the data type editor in Concept.Distinctions are made between global data types and local data types.

Derived Function Block (DFB)

A derived function block represents the Call up of a derived function block type. Details of the graphic form of call up can be found in the definition " Function block (Item)". Contrary to calling up EFB types, calling up DFB types is denoted by double vertical lines on the left and right side of the rectangular block symbol.The body of a derived function block type is designed using FBD language, but only in the current version of the programming system. Other IEC languages cannot yet be used for defining DFB types, nor can derived functions be defined in the current version. Distinctions are made between local and global DFBs.

DINT DINT stands for the data type "double integer". The input appears as Integer literal, Base 2 literal, Base 8 literal or Base 16 literal. The length of the data element is 32 bit. The range of values for variables of this data type is from –2 exp (31) to 2 exp (31) –1.

Direct display A method of displaying variables in the PLC program, from which the assignment of configured memory can be directly and indirectly derived from the physical memory.

Document window

A window within an Application window. Several document windows can be opened at the same time in an application window. However, only one document window can be active. Document windows in Concept are, for example, sections, the message window, the reference data editor and the PLC configuration.

Dummy An empty data file, which consists of a text header with general file information, i.e. author, date of creation, EFB identifier etc. The user must complete this dummy file with additional entries.


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DX Zoom This property enables connection to a programming object to observe and, if necessary, change its data value.

Elementary functions/function blocks (EFB)

Identifier for Functions or Function blocks, whose type definitions are not formulated in one of the IEC languages, i.e. whose bodies, for example, cannot be modified with the DFB Editor (Concept-DFB). EFB types are programmed in "C" and mounted via Libraries in precompiled form.

EN / ENO (Enable / Error display)

If the value of EN is "0" when the FFB is called up, the algorithms defined by the FFB are not executed and all outputs contain the previous value. The value of ENO is automatically set to "0" in this case. If the value of EN is "1" when the FFB is called up, the algorithms defined by the FFB are executed. After the error free execution of the algorithms, the ENO value is automatically set to "1". If an error occurs during the execution of the algorithm, ENO is automatically set to "0". The output behavior of the FFB depends whether the FFBs are called up without EN/ENO or with EN=1. If the EN/ENO display is enabled, the EN input must be active. Otherwise, the FFB is not executed. The projection of EN and ENO is enabled/disabled in the block properties dialog box. The dialog box is called up via the menu commands Objects

Properties... or via a double click on the FFB.

Error When processing a FFB or a Step an error is detected (e.g. unauthorized input value or a time error), an error message appears, which can be viewed with the menu command Online Event display... . With FFBs the ENO output is set to "0".

Evaluation The process, by which a value for a Function or for the outputs of a Function block during the Program execution is transmitted.

Expression Expressions consist of operators and operands.

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FFB (functions/function blocks)

Collective term for EFB (elementary functions/function blocks) and DFB (derived function blocks)

Field variables Variables, one of which is assigned, with the assistance of the key word ARRAY (field), a defined Derived data type. A field is a collection of data elements of the same Data type.

FIR filter Finite Impulse Response Filter

Formal parameters

Input/Output parameters, which are used within the logic of a FFB and led out of the FFB as inputs/outputs.

Function (FUNC) A Program organization unit, which exactly supplies a data element when executing. A function has no internal status information. Multiple call ups of the same function with the same input parameter values always supply the same output values.Details of the graphic form of function call up can be found in the definition " Function block (Item)". In contrast to the call up of function blocks, the function call ups only have one unnamed output, whose name is the name of the function itself. In FBD each call up is denoted by a unique number over the graphic block; this number is automatically generated and cannot be altered.

Function block (item) (FB)

A function block is a Program organization unit, which correspondingly calculates the functionality values, defined in the function block type description, for the output and internal variables, when it is called up as a certain item. All output values and internal variables of a certain function block item remain as a call up of the function block until the next. Multiple call up of the same function block item with the same arguments (Input parameter values) supply generally supply the same output value(s).Each function block item is displayed graphically by a rectangular block symbol. The name of the function block type is located on the top center within the rectangle. The name of the function block item is located also at the top, but on the outside of the rectangle. An instance is automatically generated when creating, which can however be altered manually, if required. Inputs are displayed on the left side and outputs on the right of the block. The names of the formal input/output parameters are displayed within the rectangle in the corresponding places.The above description of the graphic presentation is principally applicable to Function call ups and to DFB call ups. Differences are described in the corresponding definitions.

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Function block dialog (FBD)

One or more sections, which contain graphically displayed networks from Functions, Function blocks and Connections.

Function block type

A language element, consisting of: 1. the definition of a data structure, subdivided into input, output and internal variables, 2. A set of operations, which is used with the elements of the data structure, when a function block type instance is called up. This set of operations can be formulated either in one of the IEC languages (DFB type) or in "C" (EFB type). A function block type can be instanced (called up) several times.

Function counter The function counter serves as a unique identifier for the function in a Program or DFB. The function counter cannot be edited and is automatically assigned. The function counter always has the structure: .n.mn = Section number (number running)m = Number of the FFB object in the section (number running)

Generic data type

A Data type, which stands in for several other data types.

Generic literal If the Data type of a literal is not relevant, simply enter the value for the literal. In this case Concept automatically assigns the literal to a suitable data type.

Global derived data types

Global Derived data types are available in every Concept project and are contained in the DFB directory directly under the Concept directory.

Global DFBs Global DFBs are available in every Concept project and are contained in the DFB directory directly under the Concept directory.

Global macros Global Macros are available in every Concept project and are contained in the DFB directory directly under the Concept directory.

Groups (EFBs) Some EFB libraries (e.g. the IEC library) are subdivided into groups. This facilitates the search for FFBs, especially in extensive libraries.

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I/O component list

The I/O and expert assemblies of the various CPUs are configured in the I/O component list.

IEC 61131-3 International norm: Programmable controllers – part 3: Programming languages.

IEC format (QW1) In the place of the address stands an IEC identifier, followed by a five figure address:%0x12345 = %Q12345%1x12345 = %I12345%3x12345 = %IW12345%4x12345 = %QW12345

IEC name conventions (identifier)

An identifier is a sequence of letters, figures, and underscores, which must start with a letter or underscores (e.g. name of a function block type, of an item or section). Letters from national sets of characters (e.g. ö,ü, é, õ) can be used, taken from project and DFB names.Underscores are significant in identifiers; e.g. "A_BCD" and "AB_CD" are interpreted as different identifiers. Several leading and multiple underscores are not authorized consecutively.Identifiers are not permitted to contain space characters. Upper and/or lower case is not significant; e.g. "ABCD" and "abcd" are interpreted as the same identifier.Identifiers are not permitted to be Key words.

IIR filter Infinite Impulse Response Filter

Initial step (starting step)

The first step in a chain. In each chain, an initial step must be defined. The chain is started with the initial step when first called up.

Initial value The allocated value of one of the variables when starting the program. The value assignment appears in the form of a Literal.

Input bits (1x references)

The 1/0 status of input bits is controlled via the process data, which reaches the CPU from an entry device.

Input parameters (Input)

When calling up a FFB the associated Argument is transferred.

I

Note: The x, which comes after the first figure of the reference type, represents a five figure storage location in the application data store, i.e. if the reference 100201 signifies an input bit in the address 201 of the State RAM.


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Input words (3x references)

An input word contains information, which come from an external source and are represented by a 16 bit figure. A 3x register can also contain 16 sequential input bits, which were read into the register in binary or BCD (binary coded decimal) format. Note: The x, which comes after the first figure of the reference type, represents a five figure storage location in the user data store, i.e. if the reference 300201 signifies a 16 bit input word in the address 201 of the State RAM.

Instantiation The generation of an Item.

Instruction (IL) Instructions are "commands" of the IL programming language. Each operation begins on a new line and is succeeded by an operator (with modifier if needed) and, if necessary for each relevant operation, by one or more operands. If several operands are used, they are separated by commas. A tag can stand before the instruction, which is followed by a colon. The commentary must, if available, be the last element in the line.

Instruction (LL984)

When programming electric controllers, the task of implementing operational coded instructions in the form of picture objects, which are divided into recognizable contact forms, must be executed. The designed program objects are, on the user level, converted to computer useable OP codes during the loading process. The OP codes are deciphered in the CPU and processed by the controller’s firmware functions so that the desired controller is implemented.

Instruction list (IL)

IL is a text language according to IEC 1131, in which operations, e.g. conditional/unconditional call up of Function blocks and Functions, conditional/unconditional jumps etc. are displayed through instructions.

INT INT stands for the data type "whole number". The input appears as Integer literal, Base 2 literal, Base 8 literal or Base 16 literal. The length of the data element is 16 bit. The range of values for variables of this data type is from –2 exp (15) to 2 exp (15) –1.

Integer literals Integer literals function as the input of whole number values in the decimal system. The values may be preceded by the signs (+/-). Single underline signs ( _ ) between figures are not significant.

Example -12, 0, 123_456, +986

INTERBUS (PCP) To use the INTERBUS PCP channel and the INTERBUS process data preprocessing (PDP), the new I/O station type INTERBUS (PCP) is led into the Concept configurator. This I/O station type is assigned fixed to the INTERBUS connection module 180-CRP-660-01.The 180-CRP-660-01 differs from the 180-CRP-660-00 only by a clearly larger I/O area in the state RAM of the controller.


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Item name An Identifier, which belongs to a certain Function block item. The item name serves as a unique identifier for the function block in a program organization unit. The item name is automatically generated, but can be edited. The item name must be unique throughout the Program organization unit, and no distinction is made between upper/lower case. If the given name already exists, a warning is given and another name must be selected. The item name must conform to the IEC name conventions, otherwise an error message appears. The automatically generated instance name always has the structure: FBI_n_m

FBI = Function block itemn = Section number (number running)m = Number of the FFB object in the section (number running)

Jump Element of the SFC language. Jumps are used to jump over areas of the chain.

Key words Key words are unique combinations of figures, which are used as special syntactic elements, as is defined in appendix B of the IEC 1131-3. All key words, which are used in the IEC 1131-3 and in Concept, are listed in appendix C of the IEC 1131-3. These listed keywords cannot be used for any other purpose, i.e. not as variable names, section names, item names etc.

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Ladder Diagram (LD)

Ladder Diagram is a graphic programming language according to IEC1131, which optically orientates itself to the "rung" of a relay ladder diagram.

Ladder Logic 984 (LL)

In the terms Ladder Logic and Ladder Diagram, the word Ladder refers to execution. In contrast to a diagram, a ladder logic is used by engineers to draw up a circuit (with assistance from electrical symbols),which should chart the cycle of events and not the existing wires, which connect the parts together. A usual user interface for controlling the action by automated devices permits ladder logic interfaces, so that when implementing a control system, engineers do not have to learn any new programming languages, with which they are not conversant.The structure of the actual ladder logic enables electrical elements to be linked in a way that generates a control output, which is dependant upon a configured flow of power through the electrical objects used, which displays the previously demanded condition of a physical electric appliance.In simple form, the user interface is one of the video displays used by the PLC programming application, which establishes a vertical and horizontal grid, in which the programming objects are arranged. The logic is powered from the left side of the grid, and by connecting activated objects the electricity flows from left to right.

Landscape format

Landscape format means that the page is wider than it is long when looking at the printed text.

Language element

Each basic element in one of the IEC programming languages, e.g. a Step in SFC, a Function block item in FBD or the Start value of a variable.

Library Collection of software objects, which are provided for reuse when programming new projects, or even when building new libraries. Examples are the Elementary function block types libraries.EFB libraries can be subdivided into Groups.

Literals Literals serve to directly supply values to inputs of FFBs, transition conditions etc. These values cannot be overwritten by the program logic (write protected). In this way, generic and standardized literals are differentiated.Furthermore literals serve to assign a Constant a value or a Variable an Initial value. The input appears as Base 2 literal, Base 8 literal, Base 16 literal, Integer literal, Real literal or Real literal with exponent.

Local derived data types

Local derived data types are only available in a single Concept project and its local DFBs and are contained in the DFB directory under the project directory.

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Local DFBs Local DFBs are only available in a single Concept project and are contained in the DFB directory under the project directory.

Local link The local network link is the network, which links the local nodes with other nodes either directly or via a bus amplifier.

Local macros Local Macros are only available in a single Concept project and are contained in the DFB directory under the project directory.

Local network nodes

The local node is the one, which is projected evenly.

Located variable Located variables are assigned a state RAM address (reference addresses 0x,1x, 3x, 4x). The value of these variables is saved in the state RAM and can be altered online with the reference data editor. These variables can be addressed by symbolic names or the reference addresses.

Collective PLC inputs and outputs are connected to the state RAM. The program access to the peripheral signals, which are connected to the PLC, appears only via located variables. PLC access from external sides via Modbus or Modbus plus interfaces, i.e. from visualizing systems, are likewise possible via located variables.


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Macro Macros are created with help from the software Concept DFB.Macros function to duplicate frequently used sections and networks (including the logic, variables, and variable declaration).Distinctions are made between local and global macros.

Macros have the following properties:Macros can only be created in the programming languages FBD and LD.Macros only contain one single section.Macros can contain any complex section.From a program technical point of view, there is no differentiation between an instanced macro, i.e. a macro inserted into a section, and a conventionally created macro.Calling up DFBs in a macroVariable declarationUse of macro-own data structuresAutomatic acceptance of the variables declared in the macroInitial value for variablesMultiple instancing of a macro in the whole program with different variablesThe section name, the variable name and the data structure name can contain up to 10 different exchange markings (@0 to @9).

MMI Man Machine Interface

Multi element variables

Variables, one of which is assigned a Derived data type defined with STRUCT or ARRAY.Distinctions are made between Field variables and structured variables.

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Network A network is the connection of devices to a common data path, which communicate with each other via a common protocol.

Network node A node is a device with an address (164) on the Modbus Plus network.

Node address The node address serves a unique identifier for the network in the routing path. The address is set directly on the node, e.g. with a rotary switch on the back of the module.

Operand An operand is a Literal, a Variable, a Function call up or an Expression.

Operator An operator is a symbol for an arithmetic or Boolean operation to be executed.

Output parameters (Output)

A parameter, with which the result(s) of the Evaluation of a FFB are returned.

Output/discretes (0x references)

An output/marker bit can be used to control real output data via an output unit of the control system, or to define one or more outputs in the state RAM. Note: The x, which comes after the first figure of the reference type, represents a five figure storage location in the application data store, i.e. if the reference 000201 signifies an output or marker bit in the address 201 of the State RAM.

Output/marker words (4x references)

An output/marker word can be used to save numerical data (binary or decimal) in the State RAM, or also to send data from the CPU to an output unit in the control system. Note: The x, which comes after the first figure of the reference type, represents a five figure storage location in the application data store, i.e. if the reference 400201 signifies a 16 bit output or marker word in the address 201 of the State RAM.

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Peer processor The peer processor processes the token run and the flow of data between the Modbus Plus network and the PLC application logic.

PLC Programmable controller

Program The uppermost Program organization unit. A program is closed and loaded onto a single PLC.

Program cycle A program cycle consists of reading in the inputs, processing the program logic and the output of the outputs.

Program organization unit

A Function, a Function block, or a Program. This term can refer to either a Type or an Item.

Programming device

Hardware and software, which supports programming, configuring, testing, implementing and error searching in PLC applications as well as in remote system applications, to enable source documentation and archiving. The programming device could also be used for process visualization.

Programming redundancy system (Hot Standby)

A redundancy system consists of two identically configured PLC devices, which communicate with each other via redundancy processors. In the case of the primary PLC failing, the secondary PLC takes over the control checks. Under normal conditions the secondary PLC does not take over any controlling functions, but instead checks the status information, to detect mistakes.

Project General identification of the uppermost level of a software tree structure, which specifies the parent project name of a PLC application. After specifying the project name, the system configuration and control program can be saved under this name. All data, which results during the creation of the configuration and the program, belongs to this parent project for this special automation.General identification for the complete set of programming and configuring information in the Project data bank, which displays the source code that describes the automation of a system.

Project data bank The data bank in the Programming device, which contains the projection information for a Project.

Prototype data file (Concept EFB)

The prototype data file contains all prototypes of the assigned functions. Further, if available, a type definition of the internal status structure is given.

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REAL REAL stands for the data type "real". The input appears as Real literal or as Real literal with exponent. The length of the data element is 32 bit. The value range for variables of this data type reaches from 8.43E-37 to 3.36E+38.

Real literal Real literals function as the input of real values in the decimal system. Real literals are denoted by the input of the decimal point. The values may be preceded by the signs (+/-). Single underline signs ( _ ) between figures are not significant.

Example -12.0, 0.0, +0.456, 3.14159_26

Real literal with exponent

Real literals with exponent function as the input of real values in the decimal system. Real literals with exponent are denoted by the input of the decimal point. The exponent sets the key potency, by which the preceding number is multiplied to get to the value to be displayed. The basis may be preceded by a negative sign (-). The exponent may be preceded by a positive or negative sign (+/-). Single underline signs ( _ ) between figures are not significant. (Only between numbers, not before or after the decimal poiont and not before or after "E", "E+" or "E-")

Example -1.34E-12 or -1.34e-12 1.0E+6 or 1.0e+61.234E6 or 1.234e6

Reference Each direct address is a reference, which starts with an ID, specifying whether it concerns an input or an output and whether it concerns a bit or a word. References, which start with the code 6, display the register in the extended memory of the state RAM. 0x area = Discrete outputs 1x area = Input bits 3x area = Input words 4x area = Output bits/Marker words 6x area = Register in the extended memory

R

Note: Depending on the mathematic processor type of the CPU, various areas within this valid value range cannot be represented. This is valid for values nearing ZERO and for values nearing INFINITY. In these cases, a number value is not shown in animation, instead NAN (Not A Number) oder INF (INFinite).


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Register in the extended memory (6x reference)

6x references are marker words in the extended memory of the PLC. Only LL984 user programs and CPU 213 04 or CPU 424 02 can be used.

RIO (Remote I/O) Remote I/O provides a physical location of the I/O coordinate setting device in relation to the processor to be controlled. Remote inputs/outputs are connected to the consumer control via a wired communication cable.

RP (PROFIBUS) RP = Remote Peripheral

RTU mode Remote Terminal UnitThe RTU mode is used for communication between the PLC and an IBM compatible personal computer. RTU works with 8 data bits.

Rum-time error Error, which occurs during program processing on the PLC, with SFC objects (i.e. steps) or FFBs. These are, for example, over-runs of value ranges with figures, or time errors with steps.

SA85 module The SA85 module is a Modbus Plus adapter for an IBM-AT or compatible computer.

Section A section can be used, for example, to describe the functioning method of a technological unit, such as a motor.A Program or DFB consist of one or more sections. Sections can be programmed with the IEC programming languages FBD and SFC. Only one of the named programming languages can be used within a section.Each section has its own Document window in Concept. For reasons of clarity, it is recommended to subdivide a very large section into several small ones. The scroll bar serves to assist scrolling in a section.

Separator format (4:00001)

The first figure (the Reference) is separated from the ensuing five figure address by a colon (:).

Note: The x, which comes after the first figure of each reference type, represents a five figure storage location in the application data store, i.e. if the reference 400201 signifies a 16 bit output or marker word in the address 201 of the State RAM.

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Sequence language (SFC)

The SFC Language elements enable the subdivision of a PLC program organiza-tional unit in a number of Steps and Transitions, which are connected horizontally by aligned Connections. A number of actions belong to each step, and a transition condition is linked to a transition.

Serial ports With serial ports (COM) the information is transferred bit by bit.

Source code data file (Concept EFB)

The source code data file is a usual C++ source file. After execution of the menu command Library Generate data files this file contains an EFB code framework, in which a specific code must be entered for the selected EFB. To do this, click on the menu command Objects Source.

Standard format (400001)

The five figure address is located directly after the first figure (the reference).

Standardized literals

If the data type for the literal is to be automatically determined, use the following construction: ’Data type name’#’Literal value’.

Example INT#15 (Data type: Integer, value: 15), BYTE#00001111 (data type: Byte, value: 00001111) REAL#23.0 (Data type: Real, value: 23.0)

For the assignment of REAL data types, there is also the possibility to enter the value in the following way: 23.0. Entering a comma will automatically assign the data type REAL.

State RAM The state RAM is the storage for all sizes, which are addressed in the user program via References (Direct display). For example, input bits, discretes, input words, and discrete words are located in the state RAM.

Statement (ST) Instructions are "commands" of the ST programming language. Instructions must be terminated with semicolons. Several instructions (separated by semi-colons) can occupy the same line.

Status bits There is a status bit for every node with a global input or specific input/output of Peer Cop data. If a defined group of data was successfully transferred within the set time out, the corresponding status bit is set to 1. Alternatively, this bit is set to 0 and all data belonging to this group (of 0) is deleted.

Step SFC Language element: Situations, in which the Program behavior follows in relation to the inputs and outputs of the same operations, which are defined by the associated actions of the step.


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Step name The step name functions as the unique flag of a step in a Program organization unit. The step name is automatically generated, but can be edited. The step name must be unique throughout the whole program organization unit, otherwise an Error message appears. The automatically generated step name always has the structure: S_n_m

S = Step n = Section number (number running)m = Number of steps in the section (number running)

Structured text (ST)

ST is a text language according to IEC 1131, in which operations, e.g. call up of Function blocks and Functions, conditional execution of instructions, repetition of instructions etc. are displayed through instructions.

Structured variables

Variables, one of which is assigned a Derived data type defined with STRUCT (structure).A structure is a collection of data elements with generally differing data types ( Elementary data types and/or derived data types).

SY/MAX In Quantum control devices, Concept closes the mounting on the I/O population SY/MAX I/O modules for RIO control via the Quantum PLC with on. The SY/MAX remote subrack has a remote I/O adapter in slot 1, which communicates via a Modicon S908 R I/O system. The SY/MAX I/O modules are performed when highlighting and including in the I/O population of the Concept configuration.

Symbol (Icon) Graphic display of various objects in Windows, e.g. drives, user programs and Document windows.

Template data file (Concept EFB)

The template data file is an ASCII data file with a layout information for the Concept FBD editor, and the parameters for code generation.

TIME TIME stands for the data type "Time span". The input appears as Time span literal. The length of the data element is 32 bit. The value range for variables of this type stretches from 0 to 2exp(32)-1. The unit for the data type TIME is 1 ms.

Time span literals

Permitted units for time spans (TIME) are days (D), hours (H), minutes (M), seconds (S) and milliseconds (MS) or a combination thereof. The time span must be denoted by the prefix t#, T#, time# or TIME#. An "overrun" of the highest ranking unit is permitted, i.e. the input T#25H15M is permitted.

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Example t#14MS, T#14.7S, time#18M, TIME#19.9H, t#20.4D, T#25H15M, time#5D14H12M18S3.5MS

Token The network "Token" controls the temporary property of the transfer rights via a single node. The token runs through the node in a circulating (rising) address sequence. All nodes track the Token run through and can contain all possible data sent with it.

Traffic Cop The Traffic Cop is a component list, which is compiled from the user component list. The Traffic Cop is managed in the PLC and in addition contains the user component list e.g. Status information of the I/O stations and modules.

Transition The condition with which the control of one or more Previous steps transfers to one or more ensuing steps along a directional Link.

UDEFB User defined elementary functions/function blocksFunctions or Function blocks, which were created in the programming language C, and are available in Concept Libraries.

UDINT UDINT stands for the data type "unsigned double integer". The input appears as Integer literal, Base 2 literal, Base 8 literal or Base 16 literal. The length of the data element is 32 bit. The value range for variables of this type stretches from 0 to 2exp(32)-1.

UINT UINT stands for the data type "unsigned integer". The input appears as Integer literal, Base 2 literal, Base 8 literal or Base 16 literal. The length of the data element is 16 bit. The value range for variables of this type stretches from 0 to (2exp16)-1.

Unlocated variable

Unlocated variables are not assigned any state RAM addresses. They therefore do not occupy any state RAM addresses. The value of these variables is saved in the system and can be altered with the reference data editor. These variables are only addressed by symbolic names.

Signals requiring no peripheral access, e.g. intermediate results, system tags etc, should primarily be declared as unlocated variables.

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Variables Variables function as a data exchange within sections between several sections and between the Program and the PLC.Variables consist of at least a variable name and a Data type.Should a variable be assigned a direct Address (Reference), it is referred to as a Located variable. Should a variable not be assigned a direct address, it is referred to as an unlocated variable. If the variable is assigned a Derived data type, it is referred to as a Multi-element variable.Otherwise there are Constants and Literals.

Vertical format Vertical format means that the page is higher than it is wide when looking at the printed text.

Warning When processing a FFB or a Step a critical status is detected (e.g. critical input value or a time out), a warning appears, which can be viewed with the menu command Online Event display... . With FFBs the ENO output remains at "1".

WORD WORD stands for the data type "Bit sequence 16". The input appears as Base 2 literal, Base 8 literal or Base 1 16 literal. The length of the data element is 16 bit. A numerical range of values cannot be assigned to this data type.

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Numerics3x or 4x register

entering in mathematical equation, 57

AABS, 64AD16, 109ADD, 113Add 16 Bit, 109Addition, 113

AD16, 109ADD, 113

Advanced Calculations, 782algebraic expression

equation network, 54algebraic notation

equation network, 51Analog Input, 787Analog Output, 799Analog Values, 71AND, 117ARCCOS, 64ARCSIN, 64ARCTAN, 64argument

equation network, 64limits, 65

arithmetic operator, 59ASCII Functions

READ, 937WRIT, 1091

assignment operator, 59Average Weighted Inputs Calculate, 803

BBase 10 Antilogarithm, 279Base 10 Logarithm, 383BCD, 123benchmark performance

equation network, 69Binary to Binary Code, 123Bit Control, 755Bit pattern comparison

CMPR, 167Bit Rotate, 139bitwise operator, 59BLKM, 127BLKT, 131Block Move, 127Block Move with Interrupts Disabled, 135Block to Table, 131BMDI, 135boolean, 56BROT, 139

CCalculated preset formula, 809Central Alarm Handler, 793Changing the Sign of a Floating Point Number, 301Check Sum, 163

Index


Index

lvi 043505766 4/2006

CHS, 157CKSM, 163Closed Loop Control, 71CMPR, 167coil

equation network, 53error messages, 53

Coils, 91Communications

MSTR, 701COMP, 179Compare Register, 167Complement a Matrix, 179Comprehensive ISA Non Interacting PID, 831conditional expression

equation network, 51, 61conditional operator, 59Configure Hot Standby, 157constant

equation network, 51constant data

floating point, 57long (32-bit), 57LSB (least signifcant byte), 57mathematical equation, 57

Contacts, 91Convertion

BCD to binary, 123binary to BCD, 123

COS, 64COSD, 64Counters / Timers

T.01 Timer, 1049T0.1 Timer, 1053T1.0 Timer, 1057T1MS Timer, 1061UCTR, 1077

Counters/TimersDCTR, 203

creating equation network, 52

Ddata

mathematical equation, 56data conversions

equation network, 66Data Logging for PCMCIA Read/Write Support, 223DCTR, 203Derivative Rate Calculation over a Specified Time, 883DIOH, 207discrete reference

mathematical equation, 56Distributed I/O Health, 207DIV, 217Divide, 217Divide 16 Bit, 243DLOG, 223Double Precision Addition, 265Double Precision Division, 347Double Precision Multiplication, 395Double Precision Subtraction, 447Down Counter, 203DRUM, 237DRUM Sequencer, 237DV16, 243


Index

043505766 4/2006 lvii

EEMTH, 259EMTH Subfunction

EMTH-ADDDP, 265EMTH-ADDFP, 271, 275EMTH-ANLOG, 279EMTH-ARCOS, 285EMTH-ARSIN, 291EMTH-ARTAN, 295EMTH-CHSIN, 301EMTH-CMPFP, 307EMTH-CMPIF, 313EMTH-CNVDR, 319EMTH-CNVFI, 325EMTH-CNVIF, 331EMTH-CNVRD, 337EMTH-COS, 343EMTH-DIVDP, 347EMTH-DIVFI, 353EMTH-DIVFP, 357EMTH-DIVIF, 361EMTH-ERLOG, 365EMTH-EXP, 371EMTH-LNFP, 377EMTH-LOG, 383EMTH-LOGFP, 389EMTH-MULDP, 395EMTH-MULFP, 401EMTH-MULIF, 405EMTH-PI, 411EMTH-POW, 417EMTH-SINE, 423EMTH-SQRFP, 429EMTH-SQRT, 435EMTH-SQRTP, 441EMTH-SUBDP, 447EMTH-SUBFI, 453EMTH-SUBFP, 457EMTH-SUBIF, 461EMTH-TAN, 465

EMTH-ADDDP, 265EMTH-ADDFP, 271EMTH-ADDIF, 275EMTH-ANLOG, 279EMTH-ARCOS, 285

EMTH-ARSIN, 291EMTH-ARTAN, 295EMTH-CHSIN, 301EMTH-CMPFP, 307EMTH-CMPIF, 313EMTH-CNVDR, 319EMTH-CNVFI, 325EMTH-CNVIF, 331EMTH-CNVRD, 337EMTH-COS, 343EMTH-DIVDP, 347EMTH-DIVFI, 353EMTH-DIVFP, 357EMTH-DIVIF, 361EMTH-ERLOG, 365EMTH-EXP, 371EMTH-LNFP, 377EMTH-LOG, 383EMTH-LOGFP, 389EMTHMULDP, 395EMTH-MULFP, 401EMTH-MULIF, 405EMTH-PI, 411EMTH-POW, 417EMTH-SINE, 423EMTH-SQRFP, 429EMTH-SQRT, 435EMTH-SQRTP, 441EMTH-SUBDP, 447EMTH-SUBFI, 453EMTH-SUBFP, 457EMTH-SUBIF, 461EMTH-TAN, 465enable contact

horizontal open, 53horizontal short, 53normally closed, 53normally open, 53

Engineering Unit Conversion and Alarms, 489


Index

lviii 043505766 4/2006

equation networkABS, 64algebraic expression, 54algebraic notation, 51ARCCOS, 64ARCSIN, 64ARCTAN, 64argument, 64argument limits, 65arithmetic operator, 59assignment operator, 59benchmark performance, 69bitwise operator, 59conditional expression, 51, 61conditional operator, 59constant, 51content, 54COS, 64COSD, 64creating, 52data conversions, 66enable contact, 53entering function, 64entering parentheses, 63EXP, 64exponentiation operator, 59FIX, 64FLOAT, 64group expressions in nested layers of

parentheses, 51LN, 64LOG, 64logic editor, 51logical expression, 51math operator, 51mathematical, 55mathematical function, 64mathematical operation, 59nested parentheses, 63operator precedence, 62output coil, 53overview, 51parentheses, 59, 63relational operator, 59result, 54roundoff differences, 68SIN, 64SIND, 64single expression, 61size, 54SQRT, 64TAN, 64TAND, 64unary operator, 59variable, 51words consumed, 54

ESI, 469EUCA, 489Exclusive OR, 1145EXP, 64exponential notation

mathematical equation, 58exponentiation operator, 59expression

equation network, 61Extended Math, 259Extended Memory Read, 1133Extended Memory Write, 1139


Index

043505766 4/2006 lix

FFast I/O Instructions

BMDI, 135ID, 617IE, 621IMIO, 625IMOD, 631ITMR, 639

FIN, 503First In, 503First Out, 507First-order Lead/Lag Filter, 851FIX, 64FLOAT, 64Floating Point - Integer Subtraction, 453Floating Point Addition, 271Floating Point Arc Cosine of an Angle (in Radians), 285Floating Point Arc Tangent of an Angle (in Radians), 295Floating Point Arcsine of an Angle (in Radians), 291Floating Point Common Logarithm, 389Floating Point Comparison, 307Floating Point Conversion of Degrees to Radians, 319Floating Point Conversion of Radians to Degrees, 337Floating Point Cosine of an Angle (in Radians), 343Floating Point Divided by Integer, 353Floating Point Division, 357Floating Point Error Report Log, 365Floating Point Exponential Function, 371Floating Point Multiplication, 401Floating Point Natural Logarithm, 377Floating Point Sine of an Angle (in Radians), 423Floating Point Square Root, 429, 435Floating Point Subtraction, 457Floating Point Tangent of an Angle (in Radians), 465Floating Point to Integer, 513Floating Point to Integer Conversion, 325floating point variable, 56

Formatted Equation Calculator, 821Formatting Messages, 83Four Station Ratio Controller, 887FOUT, 507FTOI, 513function

ABS, 64ARCCOS, 64ARCSIN, 64ARCTAN, 64argument, 64argument limits, 65COS, 64COSD, 64entering in equation network, 64EXP, 64FIX, 64FLOAT, 64LN, 64LOG, 64SIN, 64SIND, 64SQRT, 64TAN, 64TAND, 64

Ggroup expressions in nested layers of parentheses

equation network, 51

HHistory and Status Matrices, 583HLTH, 583horizontal open

equation network, 53horizontal short

equation network, 53Hot standby

CHS, 157


Index

lx 043505766 4/2006

IIBKR, 603IBKW, 607ICMP, 611ID, 617IE, 621IMIO, 625Immediate I/O, 625IMOD, 631Indirect Block Read, 603Indirect Block Write, 607infix notation

equation network, 52Input Compare, 611Input Selection, 897Installation of DX Loadables, 101Instruction

Coils, Contacts and Interconnects, 91Instruction Groups, 37

ASCII Communication Instructions, 39Coils, Contacts and Interconnects, 50Counters and Timers Instructions, 40Fast I/O Instructions, 41Loadable DX, 42Math Instructions, 43Matrix Instructions, 45Miscellaneous, 46Move Instructions, 47Overview, 38Skips/Specials, 48Special Instructions, 49

Integer - Floating Point Subtraction, 461Integer + Floating Point Addition, 275Integer Divided by Floating Point, 361Integer to Floating Point, 645Integer x Floating Point Multiplication, 405Integer-Floating Point Comparison, 313Integer-to-Floating Point Conversion, 331Integrate Input at Specified Interval, 827Interconnects, 91Interrupt Disable, 617Interrupt Enable, 621Interrupt Handling, 97Interrupt Module Instruction, 631Interrupt Timer, 639

ISA Non Interacting PI, 865ITMR, 639ITOF, 645

JJSR, 649Jump to Subroutine, 649

LLAB, 653Label for a Subroutine, 653Limiter for the Pv, 837


Index

043505766 4/2006 lxi

LL984AD16, 109ADD, 113AND, 117BCD, 123BLKM, 127BLKT, 131BMDI, 135BROT, 139CHS, 157CKSM, 163Closed Loop Control / Analog Values, 71CMPR, 167Coils, Contacts and Interconnects, 91COMP, 179DCTR, 203DIOH, 207DIV, 217DLOG, 223DRUM, 237DV16, 243EMTH, 259EMTH-ADDDP, 265EMTH-ADDFP, 271EMTH-ADDIF, 275EMTH-ANLOG, 279EMTH-ARCOS, 285EMTH-ARSIN, 291EMTH-ARTAN, 295EMTH-CHSIN, 301EMTH-CMPFP, 307EMTH-CMPIF, 313EMTH-CNVDR, 319EMTH-CNVFI, 325EMTH-CNVIF, 331EMTH-CNVRD, 337EMTH-COS, 343EMTH-DIVDP, 347EMTH-DIVFI, 353EMTH-DIVFP, 357EMTH-DIVIF, 361EMTH-ERLOG, 365EMTH-EXP, 371EMTH-LNFP, 377EMTH-LOG, 383EMTH-LOGFP, 389

EMTH-MULDP, 395EMTH-MULFP, 401EMTH-MULIF, 405EMTH-PI, 411EMTH-POW, 417EMTH-SINE, 423EMTH-SQRFP, 429EMTH-SQRT, 435EMTH-SQRTP, 441EMTH-SUBDP, 447EMTH-SUBFI, 453EMTH-SUBFP, 457EMTH-SUBIF, 461EMTH-TAN, 465ESI, 469EUCA, 489FIN, 503Formatting Messages for ASCII READ/


Index

lxii 043505766 4/2006

WRIT Operations, 83FOUT, 507FTOI, 513HLTH, 583IBKR, 603IBKW, 607ICMP, 611ID, 617IE, 621IMIO, 625IMOD, 631Interrupt Handling, 97ITMR, 639ITOF, 645JSR, 649LAB, 653LOAD, 657MAP 3, 661MBIT, 677MBUS, 681MRTM, 691MSTR, 701MU16, 747MUL, 751NBIT, 755NCBT, 759NOBT, 763NOL, 767OR, 775PCFL, 781PCFL-AIN, 787PCFL-ALARM, 793PCFL-AOUT, 799PCFL-AVER, 803PCFL-CALC, 809PCFL-DELAY, 815PCFL-EQN, 821PCFL-INTEG, 827PCFL-KPID, 831PCFL-LIMIT, 837PCFL-LIMV, 841PCFL-LKUP, 845PCFL-LLAG, 851PCFL-MODE, 855PCFL-ONOFF, 859PCFL-PI, 865

PCFL-PID, 871PCFL-RAMP, 877PCFL-RATE, 883PCFL-RATIO, 887PCFL-RMPLN, 893PCFL-SEL, 897PCFL-TOTAL, 903PEER, 909PID2, 913R --> T, 929RBIT, 933READ, 937RET, 943SAVE, 961SBIT, 965SCIF, 969SENS, 975SRCH, 987STAT, 993SU16, 1021SUB, 1025Subroutine Handling, 99T.01 Timer, 1049T-->R, 1037T-->T, 1043T0.1 Timer, 1053T1.0 Timer, 1057T1MS Timer, 1061TBLK, 1067TEST, 1073UCTR, 1077WRIT, 1091XMRD, 1133XMWT, 1139XOR, 1145

LN, 64LOAD, 657Load Flash, 657Load the Floating Point Value of "Pi", 411


Index

043505766 4/2006 lxiii

Loadable DXCHS, 157DRUM, 237ESI, 469EUCA, 489HLTH, 583ICMP, 611Installation, 101MAP 3, 661MBUS, 681MRTM, 691NOL, 767PEER, 909

LOG, 64Logarithmic Ramp to Set Point, 893logic editor

equation network, 51, 52Logical And, 117logical expression

equation network, 51Logical OR, 775Look-up Table, 845LSB (least significant byte)

constant data, 57

MMAP 3, 661MAP Transaction, 661Master, 701Math

AD16, 109ADD, 113BCD, 123DIV, 217DV16, 243FTOI, 513ITOF, 645MU16, 747MUL, 751SU16, 1021SUB, 1025TEST, 1073

math coprocessorroundoff differences, 68

math operatorequation network, 51

mathematical equationconstant data, 57exponential notation, 58values and data types, 55

mathematical functionABS, 64ARCCOS, 64ARCSIN, 64ARCTAN, 64argument, 64argument limits, 65COS, 64COSD, 64entering in equation network, 64equation network, 64EXP, 64FIX, 64FLOAT, 64LN, 64LOG, 64SIN, 64SIND, 64SQRT, 64TAN, 64TAND, 64

mathematical operationarithmetic operator, 59assignment operator, 59bitwise operator, 59conditional operator, 59equation network, 59exponentiation operator, 59parentheses, 59relational operator, 59unary operator, 59


Index

lxiv 043505766 4/2006

MatrixAND, 117BROT, 139CMPR, 167COMP, 179MBIT, 677NBIT, 755NCBT, 759, 763OR, 775RBIT, 933SBIT, 965SENS, 975XOR, 1145

MBIT, 677MBUS, 681MBUS Transaction, 681

MiscellaneousCKSM, 163DLOG, 223EMTH, 259EMTH-ADDDP, 265EMTH-ADDFP, 271EMTH-ADDIF, 275EMTH-ANLOG, 279EMTH-ARCOS, 285, 343EMTH-ARSIN, 291EMTH-ARTAN, 295EMTH-CHSIN, 301EMTH-CMPFP, 307EMTH-CMPIF, 313EMTH-CNVDR, 319EMTH-CNVFI, 325EMTH-CNVIF, 331EMTH-CNVRD, 337EMTH-DIVDP, 347EMTH-DIVFI, 353EMTH-DIVFP, 357EMTH-DIVIF, 361EMTH-ERLOG, 365EMTH-EXP, 371EMTH-LNFP, 377EMTH-LOG, 383EMTH-LOGFP, 389EMTH-MULDP, 395EMTH-MULFP, 401EMTH-MULIF, 405EMTH-PI, 411EMTH-POW, 417EMTH-SINE, 423EMTH-SQRFP, 429EMTH-SQRT, 435EMTH-SQRTP, 441EMTH-SUBDP, 447EMTH-SUBFI, 453EMTH-SUBFP, 457EMTH-SUBIF, 461EMTH-TAN, 465LOAD, 657MSTR, 701SAVE, 961SCIF, 969XMRD, 1133


Index

043505766 4/2006 lxv

XMWT, 1139mixed data types

equation network, 66Modbus Functions, 1099Modbus Plus

MSTR, 701Modbus Plus Network Statistics

MSTR, 732Modify Bit, 677Move

BLKM, 127BLKT, 131FIN, 503FOUT, 507IBKR, 603IBKW, 607R --> T, 929SRCH, 987T-->R, 1037T-->T, 1043TBLK, 1067

MRTM, 691MSTR, 701

Clear Local Statistics, 716Clear Remote Statistics, 722CTE Error Codes for SY/MAX and TCP/IP Ethernet, 746Get Local Statistics, 714Get Remote Statistics, 720Modbus Plus and SY/MAX Ethernet Error Codes, 739Modbus Plus Network Statistics, 732Peer Cop Health, 724Read CTE (Config Extension Table), 728Read Global Data, 719Reset Option Module, 727SY/MAX-specific Error Codes, 741TCP/IP Ethernet Error Codes, 743TCP/IP Ethernet Statistics, 737Write CTE (Config Extension Table), 730Write Global Data, 718

MU16, 747MUL, 751Multiply, 751Multiply 16 Bit, 747Multi-Register Transfer Module, 691

NNBIT, 755NCBT, 759nested layer

parentheses, 51nested parentheses

equation network, 63Network Option Module for Lonworks, 767NOBT, 763NOL, 767Normally Closed Bit, 759normally closed contact

equation network, 53Normally Open Bit, 763normally open contact


OON/OFF Values for Deadband, 859One Hundredth Second Timer, 1049One Millisecond Timer, 1061One Second Timer, 1057One Tenth Second Timer, 1053operator combinations

equation network, 66operator precedence

equation network, 62OR, 775output coil


Pparentheses

entering in equation network, 63equation network, 51nested, 63nested layer, 51using in equation network, 63

PCFL, 781PCFL Subfunctions

General, 73PCFL-AIN, 787PCFL-ALARM, 793


Index

lxvi 043505766 4/2006

PCFL-AOUT, 799PCFL-AVER, 803PCFL-CALC, 809PCFL-DELAY, 815PCFL-EQN, 821PCFL-INTEG, 827PCFL-KPID, 831PCFL-LIMIT, 837PCFL-LIMV, 841PCFL-LKUP, 845PCFL-LLAG, 851PCFL-MODE, 855PCFL-ONOFF, 859PCFL-PI, 865PCFL-PID, 871PCFL-RAMP, 877PCFL-RATE, 883PCFL-RATIO, 887PCFL-RMPLN, 893PCFL-SEL, 897PCFL-Subfunction

PCFL-AIN, 787PCFL-ALARM, 793PCFL-AOUT, 799PCFL-AVER, 803PCFL-CALC, 809PCFL-DELAY, 815PCFL-EQN, 821PCFL-INTEG, 827PCFL-KPID, 831PCFL-LIMIT, 837PCFL-LIMV, 841PCFL-LKUP, 845PCFL-LLAG, 851PCFL-MODE, 855PCFL-ONOFF, 859PCFL-PI, 865PCFL-PID, 871PCFL-RAMP, 877PCFL-RATE, 883PCFL-RATIO, 887PCFL-RMPLN, 893PCFL-SEL, 897PCFL-TOTAL, 903

PCFL-TOTAL, 903PEER, 909

PEER Transaction, 909PID Algorithms, 871PID Example, 77PID2, 913PID2 Level Control Example, 80PLCs

roundoff differences, 68scan time, 69

precedenceequation network, 62

Process Control Function Library, 781Process Square Root, 441Process Variable, 72Proportional Integral Derivative, 913Put Input in Auto or Manual Mode, 855

QQuantum PLCs

roundoff differences, 68

RR --> T, 929Raising a Floating Point Number to an Integer Power, 417Ramp to Set Point at a Constant Rate, 877RBIT, 933READ, 937

MSTR, 712Read, 937READ/WRIT Operations, 83Register to Table, 929registers consumed

mathematical equation, 56Regulatory Control, 782relational operator, 59Reset Bit, 933result

equation network, 54RET, 943Return from a Subroutine, 943roundoff differences



Index

043505766 4/2006 lxvii

SSAVE, 961Save Flash, 961SBIT, 965SCIF, 969Search, 987SENS, 975Sense, 975Sequential Control Interfaces, 969Set Bit, 965Set Point Vaiable, 72signed 16-bit variable, 56signed long (32-bit) variable, 56SIN, 64SIND, 64single expression

equation network, 61Skips / Specials

RET, 943Skips/Specials

JSR, 649LAB, 653

SpecialDIOH, 207PCFL, 781PCFL-, 799PCFL-AIN, 787PCFL-ALARM, 793PCFL-AVER, 803PCFL-CALC, 809PCFL-DELAY, 815PCFL-EQN, 821PCFL-KPID, 831PCFL-LIMIT, 837PCFL-LIMV, 841PCFL-LKUP, 845PCFL-LLAG, 851PCFL-MODE, 855PCFL-ONOFF, 859PCFL-PI, 865PCFL-PID, 871PCFL-RAMP, 877PCFL-RATE, 883PCFL-RATIO, 887PCFL-RMPLN, 893PCFL-SEL, 897PCFL-TOTAL, 903PCPCFL-INTEGFL, 827PID2, 913STAT, 993

SQRT, 64SRCH, 987STAT, 993Status, 993SU16, 1021SUB, 1025Subroutine Handling, 99Subtract 16 Bit, 1021Subtraction, 1025Support of the ESI Module, 469


Index

lxviii 043505766 4/2006

TT.01 Timer, 1049T-->R, 1037T-->T, 1043T0.1 Timer, 1053T1.0 Timer, 1057T1MS Timer, 1061Table to Block, 1067Table to Register, 1037Table to Table, 1043TAN, 64TAND, 64TBLK, 1067TCP/IP Ethernet Statistics

MSTR, 737TEST, 1073Test of 2 Values, 1073Time Delay Queue, 815Totalizer for Metering Flow, 903

UUCTR, 1077unary operator, 59unsigned 16-bit variable, 56unsigned long (32-bit) variable, 56Up Counter, 1077

Vvalues and data types

mathematical equation, 55variable

equation network, 51variable data

mathematical equation, 56Velocity Limiter for Changes in the Pv, 841

Wword

maximum in an equation network, 54words consumed

constant data, 57mathematical equation, 56

WRIT, 1091Write, 1091

MSTR, 710

XXMRD, 1133XMWT, 1139XOR, 1145
