Siemens SINAMICS G110M Function Manual page 145

Table 5- 29 Start parameter request: Writing the parameter value of p1121 from slave number 17
Value Byte Description
11 h 0 Slave address
06 h 1 Function code (write)
0258 h 2,3 Register start address
0007 h 4,5 Number of registers to be written to (40601 ... 40610)
0010 h 6,7 Number of registers
xx h 8 CRC "Low"
xx h 9 CRC "High"
Table 5- 30 Response for successful write operation
Value Byte Description
11 h 0 Slave address
Number of following data bytes (20 h: 32 bytes ≙ 16 registers)
06 h 1 Function code (write)
20 h 2
0002 h 3,4 40601: DS47 Control = 2 (request was executed)
2F04 h 5,6 40602: Function code 2F h (47), response length 4 bytes
8002 h 7,8 40603: Request reference mirrored = 80 h,
response identifier = 2 (change parameter)
0101 h 9,10 40604: DO-ID = 1, number of parameters = 1
xx h 11 CRC "Low"
xx h 12 CRC "High"
Table 5- 31 Response for unsuccessful write operation - write request still not completed
Value Byte Description
11 h 0 Slave address
Number of following data bytes (20 h: 32 bytes ≙ 16 registers)
06 h 1 Function code (write)
20 h 2
0001 h 3,4 40601: DS47 Control = 1 (request is processed)
2F00 h 5,6 40602: Function 2F h(47), response length 0 (fault)
0004 h 7,8 40603: Error code:
issued)
xx h 9 CRC "Low"
xx h 10 CRC "High"
Fieldbuses
Function Manual, 04/2018, FW V4.7 SP10, A5E34229197B AE
0004 Response Not Ready (response has still not been
Communication via RS485
5.4 Communication using Modbus RTU
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