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  • DPU2000/1500R/2000R Modbus/Modbus Plus Automation Guide

    i

    DPU2000/1500R/2000R

    MODBUS / MODBUS PLUS MODBUS TCP/IP

    AUTOMATION TECHNICAL GUIDE

    TG 7.11.1.7-51

    Version 2.1 Build 1 05/2004

  • DPU2000/1500R/2000R Modbus/Modbus Plus Automation Guide

    ii

    Contents Section 1 Introduction Introduction ....................................................................................................................................................................... 1

    Section 2 Communication Card Identification and Physical Port Characteristics Communication Identification and Physical Port Characteristics ..................................................................................... 4 Communication Card Part Number Options..................................................................................................................... 7 Unit Communication Card Verification............................................................................................................................ 12

    Section 3 DPU2000, DPU1500R and DPU2000R Device Connectivity DPU2000, DPU1500R and DPU2000R Device Connectivity......................................................................................... 13 RS232 Interface Connectivity ......................................................................................................................................... 13 Port Isolation ........................................................................................................................................................... 13 RS232 Handshaking Defined ......................................................................................................................................... 14 RS232 Cable Connectivity.............................................................................................................................................. 15 RS485 Device Connectivity with the DPU2000 and DPU2000R ................................................................................... 16

    Section 4 DPU2000 and DPU2000R Device Parameterization DPU2000 and DPU2000R Device Parameterization ..................................................................................................... 20 COM 0 Port (Front Port Configuration)........................................................................................................................... 20 COM Port 1 Options Settings (DPU1500R or DPU2000R Only) [Catalog 587XXX00-XXX0 or 587XXX50-XXX0] or

    [Catalog 577XXX00-XXX0 or 577XXX50-XXX0] ..................................................................................................... 22 COM Port 2 Options Settings (DPU1500R or DPU2000R Only) [Catalog 587XXX00-XXX0 or 587XXXX6-XXX4] or

    [Catalog 577XXXX0-XXX0]...................................................................................................................................... 23 COM Port 3 and AUX COM Configuration ..................................................................................................................... 24 Modbus Protocol Selection and Configuration for Port 3 and AUX COM ...................................................................... 25 Modbus Plus Port Configuration [COM 3 on Selected Units]......................................................................................... 28 IRIG B Configuration and Wiring .................................................................................................................................... 29 Hardware Configuration.................................................................................................................................................. 31 Software Configuration ................................................................................................................................................... 33

    Section 5 Modbus Modbus Protocol............................................................................................................................................................. 34 Modbus ASCII Emulation ............................................................................................................................................... 34 Modbus RTU Emulation ................................................................................................................................................. 36 Modbus Plus ................................................................................................................................................................... 37 Modbus Plus Theory of Operation.................................................................................................................................. 38 Modbus and Modbus Plus General Notes...................................................................................................................... 41

    Section 6 Modbus/Modbus Plus Register Map 0X Discrete Coils ............................................................................................................................................................ 42 Function Code 1 (Read Coil Status) Read Only Data ................................................................................................. 42 Modbus 0X Implementation Features............................................................................................................................. 43 Logical Output Block (Single Bit Data) 108 Discrete Coils (108 Elements Defined)................................................... 45 Physical Output Block (Single Bit Data) 16 Discrete Coils (10 Elements Defined)..................................................... 48 Logical Output Block (Two Bit Data with Momentary Change Detection): (216 Elements Defined).............................. 49 Physical Output Block (Two Bit Data with Momentary Change Detection) .................................................................... 55

    Section 7 1X Discrete Contact Inputs Function Code 2 Read Input Status (Read Only Data) ............................................................................................... 57 Logical Inputs (14 Elements Defined)............................................................................................................................. 58 Physical Inputs (16 Elements Defined)........................................................................................................................... 60 Momentary Change Detect Logical Inputs (84 Elements Defined) ................................................................................ 60 Physical Input Momentary Change Detect (32 Elements Defined) ................................................................................ 64

  • DPU2000/1500R/2000R Modbus/Modbus Plus Automation Guide

    iii

    Section 8 4X Register Read Capabilities 4X Register Read Capabilities........................................................................................................................................ 66 Function Code 03 Read Holding Registers (Read Only)............................................................................................. 67 Relay Status (1 Register Defined) .................................................................................................................................. 68 Diagnostic Status (2 Registers Defined)......................................................................................................................... 69 Unit Information (15 Registers Defined) ......................................................................................................................... 70 Read Quick Status (3 Registers Defined)....................................................................................................................... 71 Power Fail Status Information (9 Registers Defined) ..................................................................................................... 72 Fast Status (2 Registers Defined) .................................................................................................................................. 72 Communication Event Log (8 Registers Defined) .......................................................................................................... 73 Metering Values.............................................................................................................................................................. 74 Demand Metering and Reactive Power Values (20 Registers Defined) ........................................................................ 76 Minimum and Maximum Peak Demand (48 Registers Defined) .................................................................................... 78 Breaker Counters (11 Registers Defined) Modbus Function 03 Read Only .................................................................. 84 Discrete 4X Register Bit Data Reporting (26 Registers Defined)................................................................................... 85

    Section 9 Register Scaling and Re-mapping Register Scaling and Re-Mapping.................................................................................................................................. 95 DPU2000, DPU1500R and 2000R Internal Operation ................................................................................................... 95 ABB Data Type Definitions ............................................................................................................................................. 96 Register Scaling Investigated ......................................................................................................................................... 97 Scaling Op

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