Modbus Commands Supported; Table C-1. Read Registers For 43I Trace Level-Enhanced - Thermo Scientific 43i Instruction Manual

MODBUS Protocol

MODBUS Commands Supported

MODBUS
Commands
Supported
C-8 Model 43i Trace Level-Enhanced Instruction Manual
Error Response
Function code
Exception code
Here is an example of a request to write Coil 5 ON:
Request
Field Name
Function
Output Address Hi
Output Address Lo
Output Value Hi
Output Value Lo
Response
Field Name
Function
Output Address Hi
Output Address Lo
Output Value Hi
Output Value Lo
Tables C1 through C3 list the MODBUS commands supported for the
Model 43i Trace Level-Enhanced.
Table C–1. Read Registers for 43i Trace Level-Enhanced
Register Number Variable
40001&40002 SO2 CONC
40003&40004 NOT USED
40005&40006 NOT USED
40007&40008 LO SO2 CONC (Dual/Auto Range mode)
40009&40010 NOT USED
40011&40012 NOT USED
1 Byte Function code + 0x80
1 Byte 01=Illegal Function, 02=Illegal Address,
03=Illegal Data, 04=Slave Device Failure
(Hex)
05
00
05
FF
00
(Hex)
05
00
05
FF
00
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