Siemens SITRANS F M MAGFLO series Operating Manual page 29

Modbus RTU RS-485 APPENDIX C
05 (0x05) Force single coil
Query
Slave address
Function
Coil Address Hi
Coil Address Lo
Force Data Hi
Force Data Lo
CRC
Examples
Coil 0 (Restart Modbus communication)
To activate a new baudrate and parity/framing the coil 0 (restart Modbus communication)
must be send. Otherwise a power down/up initiate a new baudrate and parity/framing:
Query: 1,5,0,0,255,0,140,58 (Set coil 0 to 0xFF00)
Receive: 1,5,0,0,255,0,140,58 (Restart Modbus communication)
16 (0x10) Write multiple registers
Query
Slave address
Function
Starting Address Hi
Starting Address Lo
No. of Registers Hi
No. of Registers Lo
Byte Count
Data Hi
Data Lo
:
Data Hi
Data Lo
CRC
Examples
Set baud rate to 115200 baud
Query: 1,16,2,17,0,1,2,0,8,135,23 (115200 = value 8)
Receive: 1,16,2,17,0,1,80,116
To activate a new baudrate and parity/framing the coil 0 (Restart Modbus communication)
must be send.
Otherwise a power down/up initiate a new baudrate and parity/framing:
Query: 1,5,0,0,255,0,140,58 (Set coil 0 to 0xFF00)
Receive: 1,5,0,0,255,0,140,58 (Restart Modbus communication)
SFIDK.PS.023.D2.02
Response
1 byte Slave address
1 byte Function
1 byte Coil Address Hi
1 byte Coil Address Lo
1 byte Force Data Hi
1 byte Force Data Lo
2 bytes CRC
Response
1 byte Slave address
1 byte Function
Starting Address Hi
1 byte
1 byte Starting Address Lo
1 byte No. of Registers Hi
1 byte No. of Registers Lo
1 byte CRC
1 byte
1 byte
1 byte
1 byte
2 bytes
1 byte
1 byte
1 byte
1 byte
1 byte
1 byte
2 bytes
1 byte
1 byte
1 byte
1 byte
1 byte
1 byte
2 bytes
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