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Instruction manual 880 CIU Plus Page 1
Instruction manual series 880 CIU Plus
May 2009
Part no.: 4416.526
Rev. 5
Enraf B.V.
P.O. Box 812
2600 AV Delft
Netherlands
Tel. : +31 15 2701 100
Fax : +31 15 2701 111
E-mail : enraf-nl@honeywell.com
Website : http://www.honeywell.com/ps
Page 2 Instruction manual 880 CIU Plus
Copyright 2000 - 2009 Enraf B.V. All rights reserved.
Reproduction in any form without the prior consent of Enraf B.V. is not allowed.
This instruction manual is for information only. The contents, descriptions and specifications are
subject to change without notice. Enraf B.V. accepts no responsibility for any errors that may
appear in this instruction manual.
The warranty terms and conditions for Honeywell Enraf products applicable in the country of
purchase are available from your supplier. Please retain them with your proof of purchase.
Preface
Instruction manual 880 CIU Plus Page 3
Preface This manual has been written for the technicians involved with the
communication with the Honeywell Enraf series 880 CIU Plus via
ModbusTM
.
For installation and commissioning of the CIU Plus, please refer to the
related installation guide and instruction manual Ensite Pro.
This manual describes the communication between a CIU Plus and
higher layered systems. The communication is based on emulation of
the ModbusTM
protocol (Gould Modicon Modbus Protocol Reference
Guide, PI-MBUS-300, Rev. B).
Safety and prevention of damage
>>>>Cautions==== and >>>>Notes==== have been used throughout this manual to
bring special matters to the immediate attention of the reader.
Legal aspects The information in this instruction manual is copyright property of
Enraf B.V., Netherlands.
Enraf B.V. disclaims any responsibility for personal injury or damage
to equipment caused by:
• Deviation from any of the prescribed procedures;
• Execution of activities that are not prescribed;
Additional information
Please do not hesitate to contact Honeywell Enraf or its representative
if you require additional information.
A Note points out a statement deserving more emphasis than the
general text.
A Caution draws attention to an action which may damage (the
operation of) the equipment.
Table of contents
Page 4 Instruction manual 880 CIU Plus
Table of Contents
Preface ..............................................................................................................................................3
Introduction........................................................................................................................................5
Safety ................................................................................................................................................7
Safety aspects of the CIU Plus ..................................................................................................7
Personal safety ..........................................................................................................................7
Safety conventions ....................................................................................................................8
Description and operation .................................................................................................................9
Description.................................................................................................................................9
Operation.................................................................................................................................10
Default communication settings...............................................................................................10
Commissioning................................................................................................................................11
Read tank data ................................................................................................................................13
Write tank data ................................................................................................................................19
Tank data.................................................................................................................................19
CIU data...................................................................................................................................20
Gauge commands ...................................................................................................................20
Dimensions......................................................................................................................................21
Statuses ..........................................................................................................................................23
Validity byte .............................................................................................................................23
Status byte...............................................................................................................................24
Modbus number representation ......................................................................................................25
Scaling and offset ....................................................................................................................28
Maintenance / trouble shooting .......................................................................................................30
Appendix A Glossary ..........................................................................................................31
Appendix B Article and part numbers .................................................................................42
Appendix C Related documents .........................................................................................43
Introduction
Instruction manual 880 CIU Plus Page 5
Introduction The configuration of the new tank inventory system consists of
modular parts:
• Entis Pro
• CIU Plus
• CIU Prime
• field instrumentation
Entis Pro This system displays calculated data from the CIU Plus. It is a
Windows7NT or Windows 2000 Professional based program,
displaying data in windows, boxes, tables, graphs, etc.
CIU Plus This unit calculates volume, standard volume, mass, density, flow
rate, etc. It requests data from the CIU Prime and calculates all other
data. It presents data to higher layered systems like Entis Pro,
SCADA, DCS, ENSITE, etc.
Host ports Up to four RS-232C/RS485 host ports can be installed to interface
host communication (Modbus) to Entis Pro, SCADA, DCS, ENSITE,
etc. For a description of the Modbus protocol, refer to the related
instruction manual.
Field ports Two fixed RS-232C/RS-485 field ports interface to a CIU Prime.
Automatic calculation After configuration, the CIU Plus automatically calculates data and
stores the information in a database. For a description of the
configuration and programming, refer to the instruction manual Ensite
Pro.
CIU Prime This unit is an interface between the field instrumentation and
inventory systems. It receives data from the field and converts it to
digital signals (Modbus) for systems like CIU Plus, PLC, ENSITE, etc.
Field instrumentation
The instruments in the field collect data like level, temperature, density
and/or pressure. The instruments are based on several principles:
mechanical, servo, radar, hydrostatic and capacitive or a combination.
The instruments measure the data and transmit it upon request of
higher layered systems.
Introduction
Page 6 Instruction manual 880 CIU Plus
Safety
Instruction manual 880 CIU Plus Page 7
Safety
Safety aspects of the CIU Plus
The protection class for the CIU Plus housing is IP30 (NEMA 1), which
means that the CIU Plus can only be installed indoor in an explosion
safe area or in a protective cabinet.
Other environmental parameters are:
- ambient temperature: 0...60 °C
- relative humidity: 5...90 % (non condensing)
- over voltage category: II
- pollution degree: II
The host ports of the CIU Plus are galvanically separated. The field
ports of the CIU Plus do not have galvanic separation.
Personal safety The technician must have basic technical skills to be able to safely
operate the equipment and work in accordance with the (local)
requirements for electrical equipment.
Do not use the CIU Plus other than originally intended.
Modification to the CIU Plus may only be carried out by authorized
personnel.
Failure to adhere to this will invalidate the approval certificate.
Take all necessary personal protection measures and apply to the safety
regulations, valid for the working area.
Never start working before the work permit is signed by all parties.
Description and operation
Page 8 Instruction manual 880 CIU Plus
Safety conventions >>>>Cautions==== and >>>>Notes==== have been used throughout this manual to
bring special matters to the immediate attention of the reader.
A Note points out a statement deserving more emphasis than the
general text.
A Caution draws attention to an action which may damage (the
operation of) the equipment.
Description and operation
Instruction manual 880 CIU Plus Page 9
Description and operation
Description The CIU Plus consists of the following parts:
- Front panel
- Rear connectors
- Internal circuitry
Front panel The front panel holds LEDS, indicating power and communication:
Rear connectors The CIU Plus is delivered with two fixed field ports at slots 2 and 3.
The lay-out of the other slots is as follows:
Slot
Description
1
not used
2
3
field ports (fixed)
4
not used
5
6
7
8
Up to four host ports can be installed. These ports can be:
- RS-232C / RS-485 with modbus communication (IP-
RS232/485)
9
Used when key switches are to be installed:
Description and operation
Page 10 Instruction manual 880 CIU Plus
Slot
Description
Internal circuitry The internal circuitry consists of the following parts:
- Power supply
- Service port
- 2 fixed field communication ports
- 4 optional host communication ports
- Real time clock
- Digital inputs (key switches)
Operation The CIU Plus calculates volume, standard volume, mass, density, flow
rate, etc. It requests data from the CIU Prime and calculates all other
data. It presents data to higher layered systems like Entis Pro,
SCADA, DCS, ENSITE, etc.
After configuration, the CIU Plus automatically calculates data and
stores the information in a database. The next chapters describe the
programming of the CIU Plus.
Default communication settings The CIU Plus has maximum four optional host ports with following
default settings:
Interface: RS-232
Protocol: Modbus
RTU address: 41
Baudrate: 19200
Parity: Odd
Stop bits: 1
Do not re-adjust any setting inside, this will negatively influence the
operation of the CIU Plus.
Commissioning
Instruction manual 880 CIU Plus Page 11
Commissioning The CIU Plus is a user-configurable multi-processor unit and can be
totally programmed at site, or remotely, without opening the CIU Plus.
Commissioning is done in the following steps:
Check installation - Examine the mechanical installation
- Examine the electrical installation
Select tools - Use >Ensite= to collect the data from the field instruments
- Use >Ensite Pro= to configure the CIU Prime and Plus
- Use a spreadsheet program to generate strapping files
Prepare files - Ensite: make a log file of each field instrument
- Spreadsheet: make a strapping table for each tank.
(The filename shall be ><tankname>.TXT=, in which <tankname> is
the
name of the tank. The next page shows an example of what the file
should look like)
Program configuration - Ensite Pro: configure data inputs (use log files from Ensite)
- Ensite Pro: configure tanks (use strap files from spreadsheet)
- Ensite Pro: configure CIU Primes
- Ensite Pro: configure CIU Plus=s
- Ensite Pro: link data inputs, tanks, CIU Primes and CIU Plus=s
Download configuration - Ensite Pro: set communication parameters
- Ensite Pro: select physical communication path
- Ensite Pro: download all CIU Primes
- Ensite Pro: download all CIU Plus=s
Commissioning
Page 12 Instruction manual 880 CIU Plus
Tank strap file
Example strap file >TNK-03.TXT=:
[TANK_ID] [Tank identification]
Name = TNK-03 ASCII string: the name of the tank
Date = 15-Feb-99 ASCII string: the date this file is generated
Time = 12:34 ASCII string: the time this file is generated
Level = 2 1 = m xxx.xxxx
2 = mm xxxxxx.x
3 = ft xxx.xxxx
4 = in xxxx.xxx
5 = in/16 xxxxxx.x
Volume = 51 50 = l xxxxxxxxx
51 = m3 xxxxxx.xxx
52 = USgal xxxxxxxx.x
53 = bbls xxxxxxx.xx
Ullage = 0 0 = innage
1 = ullage
Straps = 6 Number of straps
[STRAPS] [Strap data (level vs. volume)]
1 = -233.0 0.000 first (and lowest) strap
2 = 100.0 0.213 .
3 = 1006.3 5631.000 .
4 = 2001.7 10732.000 .
5 = 10032.0 52721.000 .
6 = 20531.4 98321.000 last (and highest) strap
[EOF]
[End Of File]
All text, >==-signs and numbers must be separated by one or more
spaces or Tabs.
Digit separators are not allowed.
Decimal separator must be the same as set in regional settings of your
windows system (and Ensite Pro).
Read tank data
Instruction manual 880 CIU Plus Page 13
Read tank data Data can be read from the CIU Plus.
Statusses can be read via discrete inputs.
Data can be read via holding registers and input registers.
See manual ´Instruction manual ModbusTM
Protocol´ chapter
Honeywell Enraf implementation.
General Entities Some general CIU Plus entities are available to the user via modbus
registers. These entities are available on fixed modbus addresses.
Column name Description
Name The name of the entity. For a detailed description,
refer to Appendix A, Glossary.
ID The unique identifier of the entity
Dimension Category of dimensional units. For a detailed
description, refer to chapter >Dimensions=.
Name ID Comment(s)
Year (real-time clock) 521 Time (YYYY)
Month (real-time clock) 522 Time (MM)
Day of month (real-time clock) 523 Time (dd)
Hour (real-time clock) 524 Time (h)
Minute (real-time clock) 525 Time (min)
Seconds (real-time clock) 526 Time (s)
DayLightSaving (real-time clock) 527 0 = off; 1 = on
Available tank entities The CIU Plus is delivered with a pre-programmed Tank Record lay-out
(list of tank entities) for communication with Entis Pro. The lay-out for
communication with Entis Pro is fixed, however it is possible to alter
the lay-out to fit other requirements.
A selection can be made which data must be presented in the user
defined tank data area. This because of the lot of information which
can be retrieved.
One tank data reply packet is selected which is used for all tanks
available to the modbus host.
The sequence how the tanks are organized in the user defined
modbus map is programmable.
Read tank data
Page 14 Instruction manual 880 CIU Plus
There are two methods possible to organize the user defined modbus
memory map:
1. Tank oriented.
Data in the modbus memory map is grouped per tank.
Start address of memory map is programmable. Default start address
is 0000.
The start address-interval between the tank records is programmable.
2. Data oriented.
Data in the modbus memory map is grouped per selected entity.
Start address of memory map is programmable. Default start address
is 0000.
The table below displays all entities, available to the user.
Column name Description
Name The name of the entity. For a detailed description,
refer to Appendix A, Glossary.
ID The unique identifier of the entity
Dimension Category of dimensional units. For a detailed
description, refer to chapter >Dimensions=.
Name ID Dimension
TankName 1 Text (ASCII or Unicode)
TankStatus 2 Bit coded
MovingStatus 3 Index
TankType 4 Bit coded
GaugeType 5 Nodim
GaugeStatus 6 Index
TempElementType 8 Index
HotStandbyStatus 9 Bit coded
CommStatus 10 Bit coded
TankShape 16 Index
ShellCapacity 17 Volume
LowTOV 18 Volume
HighTOV 19 Volume
HighLevel 20 Level
ProductName 21 Text (ASCII or Unicode)
GSVCalcType 22 Index
ProductCode 23 Index
VolumeCorrections 24 Index
Read tank data
Instruction manual 880 CIU Plus Page 15
Name ID Dimension
MassCalcType 25 Bit coded
ProductTRef 26 Temperature
DRef 30 Density
DRefStatus 31 Status
SedAndWater 32 Percentage
ProductTC 33 Temperature coefficient
ProductTCStatus 34 Status
LiqVolRatio 35 Nodim
GaugeLevelAlarms 36 Bit coded
ExternalContacts 37 Bit coded
DisplacerPosition 38 Level
DisplacerPositionStatus 39 Status
ProductLevel 40 Level
ProductLevelStatus 41 Status
WaterLevel 42 Level
WaterLevelStatus 43 Status
ProductTemp 44 Temperature
ProductTempStatus 45 Status
VapRoomTemp 46 Temperature
VapRoomTempStatus 47 Status
VapRoomPress 48 Pressure
VapRoomPressStatus 49 Status
DObs 50 Density
DObsStatus 51 Status
ForegroundTimeStamp 52 Absolute time
BackgroundTimeStamp 53 Absolute time
TOV 54 Volume
TOVStatus 55 Status
WaterVol 56 Volume
WaterVolStatus 57 Status
GOV 58 Volume
GOVStatus 59 Status
GSV 60 Volume
GSVStatus 61 Status
NSV 62 Volume
NSVStatus 63 Status
LiqInVap 64 Volume
LiqInVapStatus 65 Status
Read tank data
Page 16 Instruction manual 880 CIU Plus
Name ID Dimension
TGSV 66 Volume
TGSVStatus 67 Status
MassLiq 68 Mass
MassLiqStatus 69 Status
MassVap 70 Mass
MassVapStatus 71 Status
TotalMass 72 Mass
TotalMassStatus 73 Status
FlowTOV 74 Flow
AvailableRoom 75 Volume
AvailableTOV 76 Volume
VerificationSignature 77 Nodim
ConfigurationStatus 78 Bit coded
MolarWeight 79 Molar Weight value
AutomaticMeasurableValues 80 Bit coded
HydroMeterCorr 88 Nodim
TankShellTRef 90 Temperature
TankShellExpansionCoefficient 91 TankShellCoefficient
TankAirDensity 92 Density
VapRoom 93 Volume
TankConfigurationCRC 94 Nodim
CIUPrimeGeneralConfiguratonCRC 95 Nodim
CIUPlusGeneralConfigurationCRC 96 Nodim
LowLevel 97 Level
FlowStatus 99 Status
AvailableRoomStatus 100 Status
AvailableTOVStatus 101 Status
VapRoomStatus 102 Status
AmbientTemperature 103 Temperature
AmbientTemperatureStatus 104 Status
CIUPlusTankID 105 Nodim
CIUPrimeTankID 106 Nodim
CTSh 107 CTSh
CTShStatus 108 Status
InsulationFactor 109 Insulation Factor
TObs 118 Temperature
TObsStatus 119 Status
VolumeCorrectionFactor 124 VCF
Read tank data
Instruction manual 880 CIU Plus Page 17
Name ID Dimension
VolumeCorrectionFactorStatus 125 Status
TemperatureCorrectionFactor 126 TCF
TemperatureCorrectionFactorStatus 127 Status
DensityCorrectionFactor 128 DCF
DensityCorrectionFactorStatus 129 Status
TankStatusStatus 131 Nodim
MovingStatusStatus 132 Nodim
TankTypeStatus 133 Nodim
ShellCapacityStatus 134 Nodim
LowTOVStatus 135 Nodim
HighTOVStatus 136 Nodim
ProductNameStatus 137 Nodim
GSVCalcTypeStatus 138 Nodim
ProductCodeStatus 139 Nodim
VolumeCorrectionStatus 140 Nodim
MassCalcTypeStatus 141 Nodim
ProductTRefStatus 142 Nodim
SedAndWaterStatus 143 Nodim
LiqVolRatioStatus 144 Nodim
MolarWeightStatus 145 Nodim
AutomaticMeasurableValuesStatus 146 Nodim
HydroMeterCorrStatus 154 Nodim
TankTRefStatus 155 Status
TankTCStatus 156 Nodim
AirDensityStatus 157 Status
InsulationFactorStatus 158 Nodim
Alarms*
(gauge level alarms)
(external contacts)
200
(36)
(37)
Nodim
(bit coded)
(bit coded)
Dynamic tank status*
(gauge status)
(moving status)
(tank status)
201
(6)
(3)
(2)
Nodim
(index)
(index)
(bit coded)
Static tank definitions*
(tank type)
(tank shape)
202
(4)
(16)
Nodim
(bit coded)
(index)
Field instrument details*
(gauge type)
(temperature element type)
203
(5)
(8)
Nodim
(nodim)
(index)
Read tank data
Page 18 Instruction manual 880 CIU Plus
Name ID Dimension
Combined volume corrections*
(GSV calculation type)
(product code)
204
(22)
(23)
Nodim
(index)
(index)
Mass and volume corrections*
(volume corrections)
(mass calculation type)
205
(24)
(25)
Nodim
(index)
(bit coded)
Comm. and conf. status*
(configuration status)
(hot standby status)
(comm status)
206
(78)
(9)
(10)
Nodim
(bit coded)
(bit coded)
(bit coded)
A * behind the entity name indicates that this is a combined entity. The
entities requested with this combined entity are in the above table
written between brackets. Entities available in a combined entity are not
available as individual entity.
A more detailed description of all entities can be found in Appendix A,
Glossary.
Write tank data
Instruction manual 880 CIU Plus Page 19
Write tank data Please refer to the =Instruction manual Modbus
TM Protocol= chapter
Honeywell Enraf implementation
Tank data Entities can be (over-)written using direct overwrite mechanism.
On the same modbus address as where data is read this data can be
overwritten.
The following entities can be overwritten:
Name ID Dimension
ProductName 21 Text (ASCII or Unicode)
GSVCalcType 22 Index
ProductCode 23 Index
VolumeCorrections 24 Index
DRef 30 Density
SedAndWater 32 Percentage
ProductTC 33 Temperature Coefficient
LiqVolRatio 35 Nodim
ProductLevel 40 Level
WaterLevel 42 Level
ProductTemp 44 Temperature
VapRoomTemp 46 Temperature
VapRoomPress 48 Pressure
DObs 50 Density
MolarWeight 79 Molar Weight value
HydroMeterCorr 88 Nodim
AmbientTemperature 103 Temperature
TObs 118 Temperature
VolumeCorrectionFactor 124 VCF
TemperatureCorrectionFactor 126 TCF
DensityCorrectionFactor 128 DCF
E.g. in case gas temperature for a tank is read on address 0034. Then
the gas temperature for the related tank can be overwritten by a host
on address 0034 by using the Pre-set single register command.
Provided that the gas temperature is not automatically measured the
overwritten value is used for calculations.
Write tank data
Page 20 Instruction manual 880 CIU Plus
CIU data The internal date and time can be overwritten by writing holding
registers.
Gauge commands Gauge commands can be issued with the >Force single coil=
command.
Dimensions
Instruction manual 880 CIU Plus Page 21
Dimensions The CIU Plus has a specified set of dimensions. The dimension set
has to be the same for the whole combination of CIU Prime, CIU Plus
and Entis Pro. The used dimension sign and scaling factor are set-up
parameters and will be entered using Ensite Pro.
Unit Format Minimum Maximum
Level m
mm
ft
in
in/16
fis
in/256
∀xxx.xxxx
∀xxxxxx.x
∀xxx.xxxx
∀xxxx.xxx
∀xxxxxx.x
∀xxx=xx≅xx
∀xx=xx≅xxx
-999.9999
-999999.9
-999.9999
-9999.999
-999999.9
-999'11"15
-99'11"255
+999.9999
+999999.9
+999.9999
+9999.999
+999999.9
+999'11"15
+99'11"255
Temperature °C
°F
∀xxx.xx
∀xxx.xx
-300.00
-400.00
+300.00
+572.00
Pressure kgf/cm2
Pa
kPa
psi (lbf/in2)
+xx.xxx
+xxxxxxx
+xxxx.x
+xxx.xx
+00.000
+0000000
+0000.0
+000.00
+65.535
+6553500
+6553.5
+655.35
Volume l
m3
USgal
bbls
+xxxxxxxxx
+xxxxxx.xxx
+xxxxxxxx.x
+xxxxxx.xxx
+000000000
+000000.000
+00000000.0
+000000.000
+999999999
+999999.999
+99999999.9
+999999.999
Density kg/m3
°API
lbs/ft3
dens60/60
lbs/USgal
+xxxx.xx
∀xxx.xx
+xxx.xxx
+x.xxxxx
+xx.xxxx
+0000.00
-050.00
+000.000
+0.00000
+00.0000
+9999.99
+600.00
+999.999
+9.99999
+99.9999
Flow m3/min
m3/h
l/min
l/h
bbls/min
bbls/h
USgal/min
USgal/h
∀xxxx.xx
∀xxxxx.x
∀xxxxxx
∀xxxxxx
∀xxxx.xx
∀xxxxx.x
∀xxxxxx
∀xxxxxx
-9999.99
-99999.9
-999999
-999999
-9999.99
-99999.9
-999999
-999999
+9999.99
+99999.9
+999999
+999999
+9999.99
+99999.9
+999999
+999999
Acceleration m/s2 +xx.xxxxx +00.00000 +99.99999
Mass kg
metric ton
USton
+xxxxxxxxx
+xxxxxx.xxx
+xxxxxx.xxx
+000000000
+000000.000
+000000.000
+999999999
+999999.999
+999999.999
Dimensions
Page 22 Instruction manual 880 CIU Plus
Unit Format Minimum Maximum
lbs
long ton
+xxxxxxxxxx
+xxxxxx.xxx
+0000000000
+000000.000
+999999999
+999999.999
Time s
min
h
AbsTime
dd
MM
YYYY
saving active
xx
xx
xx
xx:xx:xx
xx
xx
xxxxx
x
00
00
00
00:00:00
01
01
00000
0
59
59
23
23:59:59
31
12
16383
1
Text ASCII
Unicode
1 char = 1 byte
1 char = 2 bytes
Molar Value kg/kmol +xx.xxxx +00.0000 +99.9999
Percentage % +xx.xx +00.00 +99.99
TempCoefficient 10-7/°C
10-7/°F
+xxxxx.xxx
+xxxxx.xxx
+00000.000
+00000.000
+99999.999
+99999.999
Nodim no dim., unsigned value 0 2#bits
Bit coded separate bits 0 2#bits
Index row number in table 0 2#bits
Status see chapter >Statuses=
VCF - +x.xxxxx +0.00000 +9.99999
Statuses
Instruction manual 880 CIU Plus Page 23
Statuses Each measured and each calculated entity in the CIU Plus contains a
16 bits status register.
High byte The high byte, the validity byte, is used to indicate if the data of this
entity is available (valid) and, if not valid, to indicate why the data is
not available (invalid).
Low byte The low byte is used to indicate the status of the data.
Validity byte The data validity byte is a hexadecimal number.
If the validity byte is >=80HEX
, the related data is invalid. If the data of
an entity is invalid, all derived data shows the same code in its data
validity byte and the status indicates how the data field should be
displayed (>FFFF=, blanks, etc.).
If the validity byte is <80HEX
, the related data is valid. Then additional
information is given.
Some examples are listed below. If the complete list is required
contact Enraf BV.
Validity
byte
Description Action
0x00 Valid data -
0x6F Reduced accuracy in
ambient temperature
-
0x70 Stored because of
water dip
-
0x81 No data available For derived data it is necessary to
check all input parameters for this
code
0x82 Killed data For derived data it is necessary to
check all input parameters for this
code
0xA4 General conversion
error
Check input and output value
dimensions
.
.
.
Statuses
Page 24 Instruction manual 880 CIU Plus
Status byte The data status byte is bit coded. The meaning of the bits depends on
the validity byte (<80HEX
or >=80HEX
)
Status
Bit
Validity < 80HEX
Description (bit set)
Validity >= 80HEX
Description (bit set)
7 Uncalibrated Generate Alarm
6 Manual No Data Available
5 Killed
4 Over Range
3 Under Range
2 Un-initialised
1 Stored
0 Reduced Accuracy
Validity < 80HEX
represents valid data.
Suggested characters to display depending on the contents of the status
byte:
- uncalibrated = >#=
- manual = >&=
- stored = >S=
- reduced accuracy = >?=
The data status basically exists of two parts which should be displayed
in tabular data in two separate columns:
- bit 7, which indicates whether the data is calibrated or not
- bit 6...0, which (in decreasing priority) tell something about the physical
status of the data.
Validity >= 80HEX
represents invalid data.
Suggested characters to display: >FFFF= or >blanks=
Modbus number representation
Instruction manual 880 CIU Plus Page 25
Modbus number representation The CIU Plus will be delivered with a pre-programmed Tank Record
lay-out for communication with Entis Pro. The lay-out for
communication with Entis Pro is fixed. However in case of
communication to another system the customer is able to alter the lay-
out to fit his own requirements.
This chapter describes the way data can be represented in the
modbus registers:
ID Data type Nr. of
registers
used
Description
0 Not a
number (just
data)
1...5 Data is represented according the
item definition (status, index, bit
coded, etc.)
15 ASCII string 1...10 Data represents a string of two ASCII
characters per register. Empty
registers contain >0'.
25 Unicode
characters
1...10 Data represents a string of one
Unicode character per register.
Empty registers contain >0'.
40 16 bit
unsigned
integer
1 Data is transmitted as contents of the
register. Value FFFFHEX
(65535DEC
) is
seen as failure
41 16 bit signed
integer
1 Represented in 2's complement.
bit 15: sign
bit 14...0: data
e.g. 0000HEX
= 0
e.g. 0001HEX
= 1
e.g. 7FFFHEX
= failure
e.g. 8000HEX
= -32768
e.g. FFFFHEX
= -1
42 16 bit
decimal float
1 Mostly used for scaling and offset.
bit 15: sign, 0 = pos., 1 = neg.
bit 14...11: exponent power of 10
bit 10...0: mantissa
e.g. 0000HEX
= 0
e.g. 2001HEX
= 0.001
e.g. 4801HEX
= 100
e.g. 5A16HEX
= 5340000
Modbus number representation
Page 26 Instruction manual 880 CIU Plus
ID Data type Nr. of
registers
used
Description
e.g. 73E8HEX
= 1Α1010
e.g. 7BFFHEX
= failure
e.g. 9001HEX
= -1
43 12 bit signed 1 bit 15...13: if not 000 see further:
bit 12: sign, 0 = pos., 1 = neg.
bit 11...00: analogue value
e.g. EF FFHEX
= invalid
51 32 bit signed
integer
2 Binary data, covering data range
between -2147483647 and
+2147483647
e.g. 00 00 00 00HEX
= 0
e.g. 00 00 00 01HEX
= 1
e.g. 7F FF FF FFHEX
= invalid
e.g. FF FF FF FFHEX
= -1
52 32 bit floating
point
2 Data in two registers. Data is coded
into four bytes floating point,
covering data range between
-3.402823Α1038
and +3.402823Α1038
byte 1: sign + 7 bit exponent
byte 2: 8th bit exponent + 7 bit
mantissa
byte 3: 8 bits of mantissa
byte 4: rest of mantissa
e.g. 40 80 00 00HEX
= 4
e.g. 40 A0 00 00HEX
= 5
e.g. 7F 80 00 00HEX
= invalid
53 32 bit floating
point
(swapped)
2 Data in two registers. Data is coded
into four bytes floating point,
covering data range between
-3.402823Α1038
and +3.402823Α1038
byte 1: 8 bits of mantissa
byte 2: rest of mantissa
byte 3: sign + 7 bit exponent
byte 4: 8th bit exponent + 7 bit
mantissa
e.g. 00 00 40 80HEX
= 4
e.g. 00 00 40 A0HEX
= 5
e.g. 00 00 7F 80HEX
= invalid
Modbus number representation
Instruction manual 880 CIU Plus Page 27
ID Data type Nr. of
registers
used
Description
60 Unsigned
double
register
2 1st register = integer value
2nd
register = fraction*1
e.g. 19 70 00 00HEX
= 6512
Value FFFF FFFFHEX
is seen as
failure
61 Unsigned
double
register
2 1st register = integer value
2nd
register = fraction*10
e.g. 19 70 00 06HEX
= 6512.6
Value FFFF FFFFHEX
is seen as
failure
62 Unsigned
double
register
2 1st register = integer value
2nd
register = fraction*100
e.g. 19 70 00 43HEX
= 6512.67
Value FFFF FFFFHEX
is seen as
failure
63 Unsigned
double
register
2 1st register = integer value
2nd
register = fraction*1000
e.g. 19 70 02 A6HEX
= 6512.678
Value FFFF FFFFHEX
is seen as
failure
64 Unsigned
double
register
2 1st register = integer value
2nd
register = fraction*10000
e.g. 19 70 1A 85HEX
= 6512.6789
Value FFFF FFFFHEX
is seen as
failure
ID53,60,61,62,63 and 64 are available in CIU Plus firmware version
1.003 and higher.
In CIU Plus firmware versions up to 1.002 ID50 was available. ID50 is
identical to ID64 in CIU Plus firmware versions 1.003 and higher.
Modbus number representation
Page 28 Instruction manual 880 CIU Plus
Scaling and offset Scaling and offset are defined as follows:
• The value of the data that will be available for the user is
calculated as follows:
Register value = (data * scaling) + offset
• Per selected data entity a scaling and offset value can be
entered. These entered values are used for calculating the
register value.
• The original data measured or calculated by the CIU Plus is
available in the dimension and resolution as defined by the
dimension table.
• This data is represented in the requested representation in the
output registers.
Modbus number representation
Instruction manual 880 CIU Plus Page 29
Example 1: Level : 22316.2 mm
Dimension : mm
Scaling : 0.01
Offset : 0
Data type : unsigned double register (ID=63)
Calculation : (22316.2 * 0.01) + 0 = 223.162
Data in reg. 1 : 223DEC
Data in reg. 2 : 162DEC
Example 2: Temperature : -8.23 °C
Dimension : °C
Scaling : 10
Offset : 100
Data type : 16 bit unsigned integer (ID=40)
Calculation : (-8.23 * 10) + 100 = 17.7
Data in reg. : 18 (rounded)
Example 3: Volume : 87654.321 m3
Dimension : m3
Scaling : 0.1
Offset : 0
Data type : unsigned double register (ID=64)
Calculation: : (87654.321 * 0.1) + 0 = 8765.4321
Data in reg. 1 : 8765DEC
Data in reg. 2 : 4321DEC
Example 4: Mass : 87654321 kg
Dimension : kg
Scaling : 1
Offset : 0
Data type : 32 bit signed integer (ID=52)
Calculation : (87654321 * 1) + 0 = 87654321
Data in reg. : 05 39 7F B1HEX
Maintenance / trouble shooting
Page 30 Instruction manual 880 CIU Plus
Maintenance / trouble shooting
Maintenance The CIU Plus requires neither preventive nor periodical maintenance.
Trouble shooting If something appears to be wrong, proceed as follows:
1. Check mains voltage; OK: yes -> step 2
no -> check/replace
fuses
2. Check cabling: not connected -> connect
connected -> step 3
3. Check communication: yes -> finish
no -> step 4
4. Start >Ensite Pro=
5. Go to >Diagnostic data=
6. Press the >Update=-button to have the current values.
7. Press the >Print...=-button to print the data.
8. Contact Honeywell Enraf with diagnostic data.
Cleaning of the housing of the CIU Plus should be done with a moist
cloth only.
After switching on the CIU Plus it will take approximately 1 minute before
it will be able to communicate via the host ports.
The ´Alive´ LED (green LED under the red power LED) gives an
indication if the CIU Plus is in healthy condition.
In case healthy the LED is on for 2 seconds and off for 1 second etc.
Note that the healthy flash rhythm is different from the flash rhythm of
the Alive LED on the CIU Prime.
Appendix
Instruction manual 880 CIU Plus Page 31
Appendix A Glossary
A
Alarms ID#200; Combined entity which represents the ExternalContacts
(ID#37) and the GaugeLevelAlarms (ID#36).
High byte ID#37; Indicates (bit coded) the ExternalContacts:
- Bit 0 = 1 External contact 1 active
- Bit 1 = 1 External contact 2 active
- Bit 2 = 1 External contact failure
- Bit 3 = 1 External contact not available in this instrument
Low byte ID#36; Indicates (bit coded) GaugeLevelAlarms:
- Bit 0 = 1 Low Level alarm tripped
- Bit 1 = 1 High Level alarm tripped
- Bit 2 = 1 Alarm failure
- Bit 3 = 1 Gauge alarms not available in this instrument
AmbientTemperature ID#103; Value of the tank=s ambient temperature.
AmbientTemperatureStatus ID#104; Status of ID#103, AmbientTemperature.
AutomaticMeasurableValues
ID#80; Indicates (bit coded) which values can be automatically
measured (this doesn't necessarily mean that they are actually
measured). Bit n = 1: value can be measured automatically:
- Bit 0 = 1 Level [ID#38, ID#40]
- Bit 1 = 1 Temperature [ID#44]
- Bit 2 = 1 Water level [ID#42]
- Bit 3 = 1 Density [ID#50]
- Bit 4 = 1 Vapour temperature [ID#46]
- Bit 5 = 1 Vapour pressure [ID#48]
- Bit 6 = 1 Ambient Temperature [ID#103]
- Bit 7 = 1 Dummy scan (now used for FDI scan)
- Bit 14 ProductTC calc. mode: 0 = manual, 1 = calculated
- Bit 15 VCF calc. mode: 0 = manual, 1 = calculated
Because of the representation as combined entity the length of each
individual entity (#36 and #37) is fixed to 8 bits.
Bits 14 and 15 are for internal use of the CIU Plus.
The length is fixed to 16 bits.
Appendix
Page 32 Instruction manual 880 CIU Plus
AutomaticMeasurableValuesStatus
ID#146; Status of ID#80, AutomaticMeasurableValues.
AvailableRoom ID#75; Value of the tank=s spare capacity.
AvailableRoomStatus ID#100; Status of ID#75, AvailableRoom.
AvailableTOV ID#76; Value of the available product volume.
AvailableTOVStatus ID#101; Status of ID#76, AvailableTOV.
Appendix
Instruction manual 880 CIU Plus Page 33
B
BackgroundTimeStamp ID#53; (Absolute) time when, in the background scan, the most recent
item was scanned.
C
CIUPlusGeneralConfigurationCRC
ID#95; Checksum, calculated over general CIU Plus configuration
parameters (for W&M purposes).
CIUPlusTankID ID#106; Holds (bit coded) the CIU Plus tank identifier:
- Bit 0..7 Tank number between 1 and 50
- Bit 8..15 RTU Address of the CIU Plus host port
CIUPrimeGeneralConfigurationCRC
ID#95; Checksum, calculated over general CIU Prime configuration
parameters (for W&M purposes).
CIUPrimeTankID ID#106; Holds (bit coded) the CIU Prime tank identifier:
- Bit 0..7 Tank number between 1 and 50
- Bit 8..15 RTU Address of the CIU Prime host port
CommStatus ID#10; Indicates (bit coded) the communication status:
- Bit 0 = 1 CIU Prime to Gauge comm. OK. (Future) (Bit 0 does
not change when bit 1=0)
- Bit 1 = 1 CIU Plus to (active or passive) CIU Prime comm. OK
- Bit 2 = 1 FieldPort on (active) CIU Prime OK
ConfigurationStatus ID#78; Indicates (bit coded) the CIU and tank configuration status:
- Bit 0 = 1 Gauge configuration mismatch (Future)
- Bit 1 = 1 CIU Prime general configuration mismatch
- Bit 2 = 1 CIU Prime tank configuration mismatch
- Bit 3 = 1 CIU Plus general configuration mismatch
- Bit 4 = 1 CIU Plus tank configuration mismatch for this tank
- Bit 5 = 1 Ensite Pro general configuration mismatch
- Bit 6 = 1 Ensite Pro tank configuration mismatch
- Bit 7 = 1 CIU Prime record contains invalid verification
signature
Value FFFF: tank/port not used.
Value FFFF: tank/port not used.
Because of the representation as combined entity the useful length is
fixed to 3 bits.
Appendix
Page 34 Instruction manual 880 CIU Plus
CorrectionFactor ID#124; Value of the VCF.
CorrectionFactorStatus ID#125; Status of ID#124, CorrectionFactor.
CTSh ID#107; The correction for the expansion of the shell.
CTShStatus ID#108; Status of ID#107, CTSh.
D
DCF ID#128; Value of the DCF.
DCFStatus ID#129; Status of ID#129, DCF.
DisplacerPosition ID#38; Value of the physical servo displacer position.
DisplacerPositionStatus ID#39; Status of ID#38, DisplacerPosition.
DObs ID#50; Value of the product density.
DObsStatus ID#51; Status of ID#50, DObs.
DRef ID#30; Value of the reference density.
DRefStatus ID#31; Status of ID#30, DRef.
E
ExternalContacts ID#37; Indicates (bit coded) the external contacts:
- Bit 0 = 1 External contact 1 active
- Bit 1 = 1 External contact 2 active
- Bit 2 = 1 External contact failure
- Bit 3 = 1 External contact not available in this instrument
F
FlowTOV ID#74; Value of the total product volume (TOV) per time unit.
FlowStatus ID#99; Status of ID#74, FlowTOV.
ForegroundTimeStamp ID#52; (Absolute) time when, in the foreground scan, the most recent
item was scanned.
Because of the representation as combined entity the length is fixed to 8
bits.
Because of the representation as combined entity the length is fixed to 8
bits.
Appendix
Instruction manual 880 CIU Plus Page 35
G
GaugeCommands ID#7; Indicates (bit coded) the allowed gauge commands:
- Bit 0 = 1 Test not allowed
- Bit 1 = 1 Lock test not allowed
- Bit 2 = 1 Block not allowed
- Bit 3 = 1 Calibration not allowed
- Bit 4 = 1 Alarm test not allowed
- Bit 5 = 1 Tank profile not allowed
- Bit 6 = 1 Interface profile not allowed
- Bit 7 = 1 Water dip not allowed
- Bit 8 = 1 Reset Gauge not allowed
- Bit 9 = 1 Interface 2 command not allowed
GaugeLevelAlarms ID#36; Indicates (bit coded in the high order byte) gauge level alarms
(firmware version >2.000):
- Bit 8 = 1 Low Level alarm tripped
- Bit 9 = 1 High Level alarm tripped
- Bit 10 = 1 Alarm failure
- Bit 11 = 1 Gauge alarms not available in this instrument
GaugeStatus ID#6; Indicates (in the high order byte) the (servo) gauge status.
Following modbus values represents a status (firmware version
>2.000):
- 0 = Level gauge is measuring level
- 256 = Level gauge is in test
- 512 = Level gauge is in lock test
- 768 = Level gauge is blocked
- 1024 = Level gauge is busy with a density profile measurement
- 1280 = Level gauge is searching water level
- 1536 = Level gauge end switch reached
- 2560 = Level gauge has found water level and is measuring it
- 65280 = Level gauge is in failure
These 2 bytes are configured in the CIU Prime by Ensite Pro. The data
extraction of Ensite Pro takes care of the configuration of this entity.
Because of the representation as combined entity the length is fixed to
16 bits.
Appendix
Page 36 Instruction manual 880 CIU Plus
GaugeType ID#5; Type of level measuring instrument. To get the instrument type
number, add 800 (decimal) to the GaugeType value. Example: Gauge
type value = 54 -> instrument 854. This entity is configured by Ensite
Pro.
GOV ID#58; Value of the Gross Observed Volume.
GOVStatus ID#59; Status of ID#58, GOV.
GSV ID#60; Value of the Gross Standard Volume.
GSVCalcType ID#22; Indicates (indexed) the GSV calculation method:
- 0 = No GSV calculation
- 1 = VCF/Dref calc. acc. to ASTM D1250 (1980) table 6/5
- 2 = VCF/Dref calc. acc. to ASTM D1250 (1980) table 24/23
- 3 = VCF/Dref calc. acc. to ASTM D1250 (1980) table 54/53
- 4 = DCF calculation
- 5 = TCF calculation
- 6 = VCF calc. acc. to ASTM D4311 (1990) table 1
- 7 = VCF calc. acc. to ASTM D4311 (1990) table 2
- 8 = M - manual entry of VCF
- 9 = VCF calc. acc. to ASTM D4311 (1996) table 1 (implemented
using formula)
- 100...255 GSV calculation according defined chemical formulas
(future implementation)
GSVCalcTypeStatus ID#138; Status of ID#22, GSVCalcType.
GSVStatus ID#61; Status of ID#60, GSV.
Statuses 2048 and 2304 can only be detected when the ZLQ request is
used for the level measurement.
Because of the representation as combined entity the length is fixed to
16 bits.
Because of the representation as combined entity the length is fixed to 8
bits.
If index 0 = 0, Dref is not calculated.
Because of the representation as combined entity the length is fixed to 8
bits.
Appendix
Instruction manual 880 CIU Plus Page 37
H
HighLevel ID#20; Level corresponds to HighTOV (for graphical purposes only).
HighTOV ID#19; The maximum volume the tank may safe contain.
HighTOVStatus ID#136; Status of ID#19, HighTOV.
HotStandbyStatus ID#9; Indicates (bit coded) the hot standby status:
- Bit 0 = 1 Primary CIU Prime is scanning this tank
- Bit 1 = 1 Primary CIU Prime is available for this tank
- Bit 2 = 1 Secondary CIU Prime is scanning this tank
- Bit 3 = 1 Secondary CIU Prime is available for this tank
- Bit 4 = 1 CIU Plus is passive member of a Hot-Standby pair
HydroMeterCorr ID#88; >0' is false, >1' means true.
HydroMeterCorrStatus ID#154; Status of ID#88, HydroMeterCorr.
I
InsulationFactor ID#109; The insulation factor of the tank shell.
InsulationFactorStatus ID#158; Status of ID#109, InsulationFactor.
L
LiqInVap ID#64; Value of the vapour volume in the tank, if it was >liquefied=.
LiqInVapStatus ID#65; Status of ID#64, LiqInVap.
LiqVolRatio ID#35; Factor by which a product in gaseous form reduces in volume
when converted to a liquid.
LiqVolRatioStatus ID#144; Status of ID#35, LiqVolRatio.
LowLevel ID#97; Level corresponds to LowTOV (for graphical purposes only).
LowTOV ID#18; The minimal volume under which no pumping is allowed.
LowTOVStatus ID#135; Status of ID#18, LowTOV.
Because of the representation as combined entity the useful length is
fixed to 5 bits.
Appendix
Page 38 Instruction manual 880 CIU Plus
M
MassCalcType ID#25; Indicates (bit coded) the method of mass calculation:
- Bit 0 = 1 Liquid mass directly calculated from GOV * DObs
- Bit 1 = 1 Liquid mass calculated from NSV
- Bit 2 = 1 Liquid mass calculated in air
- Bit 3 = 1 Vapour mass calculated in air
MassCalcTypeStatus ID#141; Status of ID#25, MassCalcType.
MassLiq ID#68; Value of the product volume weight.
MassLiqStatus ID#69; Status of ID#68, MassLiq.
MassVap ID#70; Value of the vapour volume weight.
MassVapStatus ID#71; Status of ID#70, MassVap.
MolarWeight ID#79; Molar weight of the gas composition.
MolarWeightStatus ID#145; Status of ID#79, MolarWeight.
MovingStatus ID#3; Indicates (indexed) the level moving status:
- 0 = Tank level is stable
- 1 = Tank level is moving up
- 2 = Tank level is moving down
- 3 = No valid movement status can be detected (e.g. manual level)
MovingStatusStatus ID#132; Status of ID#3, MovingStatus.
N
NSV ID#62; Value of the Net Standard Volume.
NSVStatus ID#63; Status of ID#62, NSV.
P
ProductCode ID#23; Indicates (indexed) the product code:
- 0 = Not applicable
- 1 = A (use subsection A of the table specified in ID#22)
- 2 = B (use subsection B of the table specified in ID#22)
- 3 = C (use subsection C of the table specified in ID#22)
- 4 = D (use subsection D of the table specified in ID#22)
- 5 = E (use subsection E of the table specified in ID#22)
Because of the representation as combined entity the length is fixed to 8
bits.
Because of the representation as combined entity the length is fixed to 4
bits.
To disable the range checking, add 128 to above numbers.
Because of the representation as combined entity the length is fixed to 8 bits.
Appendix
Instruction manual 880 CIU Plus Page 39
ProductCodeStatus ID#139; Status of ID#23, ProductCode.
ProductLevel ID#40; Value of the product level.
ProductLevelStatus ID#41; Status of ID#40, ProductLevel.
ProductName ID#21; 20 characters ASCII or 10 characters UNICODE.
ProductNameStatus ID#137; Status of ID#21, ProductName.
ProductTC ID#33; Value of the product temperature coefficient.
ProductTCStatus ID#34; Status of ID#33, ProductTC.
ProductTemp ID#44; Value of the product temperature.
ProductTempStatus ID#45; Status of ID#44, ProductTemp.
ProductTRef ID#26; Value of the product reference temperature.
ProductTRefStatus ID#142; Status of ID#26, ProductTRef.
S
SedAndWater ID#32; Volume of emulsified water in the product. The absolute
volume is calculated from the sediment and water percentage
(S&W%) and is used when calculating NSV. S&W% is a manual entry.
SedAndWaterStatus ID#143; Status of ID#32, SedAndWater.
ShellCapacity ID#17; Value of the tank shell volume (used for gas calculations).
ShellCapacityStatus ID#134; Status of ID#17, ShellCapacity.
T
TankConfigurationCRC ID#94; Checksum, calculated over tank related configuration
parameters by the CIU Plus (for W&M purposes).
TankName ID#1; 10 characters ASCII or 5 characters Unicode.
TankNameStatus ID#130; Status of ID#1, TankName.
TankShape ID#16; Indicates (indexed) the shape of the tank:
- 0 = No shape defined
- 1 = Cylindrical fixed roof
- 2 = Cylindrical with floating roof
- 3 = Cylindrical with internal floater
- 4 = Spherical tank
- 5 = Bullet
- 6 = Underground bullet
- 7 = Irregular cavern
- 8...99 Reserved (future)
- 100...255 Free configurable by the user.
These values are used to display a picture of the tank by Entis Pro or
Scada systems.
Because of the representation as combined entity the length is fixed to 8
bits.
Appendix
Page 40 Instruction manual 880 CIU Plus
TankStatus ID#2; Indicates (bit coded) the status of the tank:
- Bit 0 = 1 Tank shell is calibrated by W&M (Treated as General
Tank calibrated Flag)
- Bit 1 = 1 Maintenance (future)
- Bit 2 = 1 Tank is disabled
- Bit 3 = 1 Tank is not available
TankStatusStatus ID#131; Status of ID#2, TankStatus.
TankType ID#4; Indicates (bit coded) the type of the tank:
- Bit 0 = 1 Ullage if bit is set, otherwise Innage
- Bit 1 = 1 WAP tank (Water Above Product) (future)
- Bit 2 = 1 Liquid mass calculated in air
- Bit 3 = 1 Vapour mass calculated in air
- Bit 4 = 1 HIMS calculation not allowed. If bit is set then mass
may NOT be calculated from GOV * Dobs.
TankTypeStatus ID#133; Status of ID#4, TankType.
TCF ID#126; Value of the TCF.
TCFStatus ID#127; Status of ID#126, TCF.
TempElementType ID#8; Indicates (indexed) the type of temperature element:
- 0 = No element available
- 1 = MRT
- 2 = MRT with bottom spot
- 3 = MRT with bottom and top spot
- 4 = One Spot element
- 5 = Two spot elements
- 8 = MTT
TGSV ID#66; Value of the Total Gross Standard Volume.
TGSVStatus ID#67; Status of ID#66, TGSV.
TotalMass ID#72; Value of the product plus vapour volume weight.
TotalMassStatus ID#73; Status of ID#72, TotalMass.
TObs ID#118; Value of the observed temperature.
TObsStatus ID#119; Status of ID#118, TObs.
TOV ID#54; Value of the Total Observed Volume.
TOVStatus ID#55; Status of ID#54, TOV.
Default: 6 (bit 2+3). Because of the representation as combined entity
the length is fixed to 4 bits.
Because of the representation as combined entity the length is fixed to 8
bits.
Because of the representation as combined entity the length is fixed to 8 bits.
Appendix
Instruction manual 880 CIU Plus Page 41
V
VapRoom ID#93; Vapour room.
VapRoomPress ID#48; Value of the product vapour pressure.
VapRoomPressStatus ID#49; Status of ID#48, VapRoomPress.
VapRoomStatus ID#102; Status of ID#93, VapRoom.
VapRoomTemp ID#46; Value of the product vapour temperature.
VapRoomTempStatus ID#47; Status of ID#46, VapRoomTemp.
VerificationSignature ID#77; Calculated over all entities in the default tank record. The
patented calculation algorithm verifies the contents of the transmitted
tank records.
VolumeCorrections ID#24; Indicates (indexed) the volume correction method:
- 0 = NONE *)
- 1 = S&W correction applied **)
- 2 = Vap. calc. acc. Liq/Vol Ratio ISO/TC28/SC 3 N ***)
- 3 = Vap. calc. acc. Molar Method acc. to ISO/TC28/SC 3 N ***)
- 4 = Vap. calc. acc. Molar Method acc. to API research proj. 44 ***)
- 5 = Vap. calc. acc. Molar Method acc. to ISO 6578 ***)
- 6...255 Other vapour calculations (reserved, future) ***)
VolumeCorrectionsStatus ID#140; Status of ID#24, VolumeCorrections.
W
WaterLevel ID#42; Value of the water level.
WaterLevelStatus ID#43; Status of ID#42, WaterLevel.
WaterVol ID#56; Value of the water volume.
WaterVolumeStatus ID#57; Status of ID#56, WaterVol.
*) Liquid Mass calculated from GSV*Dref or Dobs*TOV
Vapour Mass = Not valid
**) Liquid Mass calculated from NSV
Vapour Mass = Not valid
***) Liquid Mass calculated from GSV*Dref or Dobs*TOV
Vapour Mass = According vapour calculations
Because of the representation as combined entity the length is fixed to 8
bits.
Appendix
Page 42 Instruction manual 880 CIU Plus
Appendix B Article and part numbers
Article description Part no.
Indication stickers 2075.998
Carrier board 0880.601
Newt 80165 0880.602
IP-232/485 complete (Modbus) 0880.811
IP-BPM complete 0880.812
IP-232/485 complete (858 CIU) 0880.813
Key switch complete 0880.822
Power supply complete 0880.830
Serial driver (DIL) 2518.120
ROM serial carrier board 2518.941
RTC clock chip carrier board 2518.942
Serial driver (DIL) 2519.105
BPM connector 2522.110 + 2524.968
Micro jumpers (RS232) 2522.130
Jumpers carrier board 2523.922
Mains connection cable 2570.238
Mains fuse 2655.337
Net entry 2670.202
Fuse T1A carrier board 2829.978
Appendix
Instruction manual 880 CIU Plus Page 43
Appendix C Related documents
API Manual of Petroleum Measurement Standards
(Annex to chapter 1, >Vocabulary=, released in January 1982)
ISO/TC 28/Section 3 - Terms relating to the calculation of oil quantity
Installation guide 880 CIU Prime/Plus
Instruction manual 880 CIU Prime
Instruction manual ModbusTM
Protocol
Instruction manual Ensite Service Tool
Instruction manual Ensite Pro Configuration Tool
Page 44 Instruction manual 880 CIU Plus
Delftechpark 39 2628 XJ Delft Tel. :+31 15 2701 100 E-mail : enraf-nl@honeywell.com Website: http://www.honeywell.com/ps PO Box 812 2600 AV Delft The Netherlands We at Honeywell Enraf are committed to excellence. Information in this publication is subject to change without notice Enraf is a registered trade mark. Enraf B.V. Netherlands
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