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MODBUS Protocol
MODBUS Parameters Supported
C-8 Model 5030i SHARP Instruction Manual Thermo Fisher Scientific
Here is an example of a request to write Coil 5 ON:
Request
Field Name (Hex)
Function 05
Output Address Hi 00
Output Address Lo 05
Output Value Hi FF
Output Value Lo 00
Response
Field Name (Hex)
Function 05
Output Address Hi 00
Output Address Lo 05
Output Value Hi FF
Output Value Lo 00
Table C–1 through Table C–3 lists the MODBUS addresses supported for
the Model 5030i.
IMPORTANT NOTE The addresses in the following tables are Protocol
Data Unit (PDU) addresses. Verify the coil number on your MODBUS
master to ensure that it matches the coil number on the instrument.
Note Coil status 1 indicates active state.
Table C–1. Read Coils for 5030i
Coil Number Status
0 INVALID
1 LOCAL/REMOTE
2 SERVICE
3 NOT USED
4 GEN ALARM
5 CONC ALARM
6 INST ALARMS
MODBUS Parameters
Supported
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