MODBUS Protocol
MODBUS Addresses Supported
C-8
Partisol 2000
i
and Partisol 2000
i
-D Instruction Manual
Thermo Fisher Scientific
Response
Function code
1 Byte
0x05
Starting Address
2 Bytes
0x0000 to maximum allowed by Sampler
Output Value
2 Bytes
0x0000 or 0xFF00
Error Response
Function code
1 Byte
Function code + 0x80
Exception code
1 Byte
01=Illegal Function, 02=Illegal Address,
03=Illegal Data, 04=Slave Device Failure
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
list the MODBUS addresses supported for
the Partisol 2000
i
and 2000
i
-D.
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 Sampler.
▲
Note
Coil status 1 indicates active state.
▲
MODBUS Addresses
Supported