ABB 266 MODBUS User Manual

Appendix C MODBUS® register lists
86 | 266 MODBUS® multivariable transmitter User manual 2105216 Rev. AB
Appendix C MODBUS
®
register lists
All registers in this document are referenced to base one. The MODBUS
®
message frame for read and write access is base zero.
This means that the number of the mapped register is one higher than the number that is sent in a MODBUS
®
message frame.
Function code 4 is meant to access the process parameters, which possibly could be polled in a low cycle time (> 100 ms).
Therefore the data of the parameters is held in an internal buffer, which has a low access time. Function code 3 should be used to
access parameters that are non-cyclic or with a high cycle time (> seconds).
By reading or writing 32 bit or 16 bit registers, 4 or 2 byte are transmitted. If a parameter has a data type which uses fewer bytes
than that, the data is transmitted in the lower data bytes of the MODBUS
®
message frame. The data bytes that are not used are set
to zero.
C.1 ABB transmitter register map
This register map is an expanded map from the ABB 267 MODBUS
®
transmitter.
Table 20: ABB transmitter register map
Register Address
Data
Type
Object description
Read/
Write
Added
Ext.
32 bit
16 bit
1 – 8
5001 – 5016
Pack
ASCII
Transducer ID / Serial number 16 ASCII characters string.
Ex. "T090100001" (See 4.3.1.1, Set MODBUS
®
device address, page 38)
RO
√
9
5017 – 5018
U32
Date Factory Characterized seconds since 1970 Jan 1st
RO
√
10
5019 – 5020
U32
Communication Board Hardware
example value 0x00010203 represents 1.2.3
bits 23-16 = Major Revision (compatibility change)
bits 15-8 = Minor Revision (functionality or operation)
bits 7-0 = Sub-minor Revision (bug fixes)
RO
√
11
5021 – 5022
U32
Sensor Board Hardware
base part number 3 MSB
version number 1LSB
see register 10 for more information
RO
√
12
5023 – 5024
U32
Communication Board firmware
base part number 3 MSB
version number 1LSB
see register 10 for more information
RO
√
13
5025 – 5026
U32
Sensor Board firmware
base part number 3 MSB
version number 1LSB
see register 10 for more information
RO
√
14
5027 – 5028
F
DP Upper Range Limit (Set by Measurement Sensor URL)
RO
√
15
5029 – 5030
F
DP Lower Range Limit (Set by Measurement Sensor LRL)
RO
√
16
5031 – 5032
F
SP Upper Range Limit (Set by Measurement Sensor URL)
RO
√
17
5033 – 5034
F
SP Lower Range Limit (Set by Measurement Sensor LRL)
RO
√
18
5035 – 5036
F
Transducer cell Temperature Upper Range Limit (URL)
RO
√
19
5037 – 5038
F
Transducer cell Temperature Lower Range Limit (LRL)
RO
√
20
5039 – 5040
F
Second since last Restart
RO
√
Normal Operation Polling registers
21
401 – 402
F
Differential Pressure (Damping, Calibration and Units applied ) floating point, 401
is high word, 402 is low word
RO
22
403 – 404
F
Static Pressure (Damping, Calibration and Units applied ) floating point, 403 is high
word, 404 is low word
RO

ABB 266 MODBUS Specifications

General

Brand	ABB
Model	266 MODBUS
Category	Transmitter
Language	English