Siemens SINAMICS G220 - Response to an Invalid Write or Read Access Attempt

Table 14-41 Read parameter response: Write parameter value of p1121
 Value Byte Description
Modbus Appli‐
cation Header
- 0 … 6 -
Protocol Data
Unit
03h 7 Function code
0258h 8, 9 Register (40601)
0007h 10, 11 Number of registers to be read (40601 … 40607)
Table 14-42 Response of the converter to a valid write request
 Value Byte Description
Modbus Appli‐
cation Header
- 0 … 6 -
Protocol Data
Unit
03h 7 Function code
0Eh 8 Number of bytes (0Eh: 14 bytes ≙ 7 registers)
0002h 9, 10 40601: DS47 Control= 2 (the request was executed)
2F04h 11, 12 40602: Function code 2F h (47), response length 4 bytes
8002h 13, 14 40603: Request reference mirrored = 80 h, response identi󹪝er = 2
(write parameter)
0101h 15, 16 40604: Drive object = 1, number of parameters = 1
Table 14-43 Response if write request has still not been completed
 Value Byte Description
Modbus Appli‐
cation Header
- 0 … 6 -
Protocol Data
Unit
03h 7 Function code
0Eh 8 Number of bytes (0Eh: 14 bytes ≙ 7 registers)
0001h 9, 10 40601: Check value 1 = request being processed
2F00h 11, 12 40602: Function code 2F h (47), response length 0 (error)
0004h 13, 14 40603: Response has still not been issued
14.5.8 Response to an invalid write or read access attempt
Overview
The converter signals an erroneous read or write access attempt to the controller with an error
code.
Functions
14.5Modbus TCP communication
SINAMICS G220 converter
398 Operating Instructions, 04/2024, FW V6.2, A5E51781573B AB