Function Code 06 (Write Single Register) - Siemens SIRIUS 3RW5 series Manual

Messages and diagnostics
7.2 Function Codes
7.2.4

Function Code 06 (Write Single Register)

This function enables the Modbus client system to write an individual register from the 3RW5
register memory area.
A valid address from the register memory area is expected as the start address. The
selected address must be designated as writable in the data tables in chapter Data tables
(Page 75).
Request telegram
Address Field
7 bytes
-
Response telegram
Address Field
7 bytes
-
Example
Setting the starting mode "Voltage ramp + Current limiting":
● Address field: The address of the 3RW5 soft starter is not entered in the example (-).
● The register address of the starting mode is 0x9409.
● For the starting mode "Voltage ramp + Current limiting" the value 5 is transmitted to the
3RW5 soft starter (0x0005).
You can find the data table for the parameters in Parameters (Page 89).
56
Function Code
1 byte
0x06
Function Code
1 byte
0x06
Start address
2 bytes
0x9409
Start address
2 bytes
0x9409
SIRIUS 3RW5 Modbus TCP communication module
Manual, 03/2018, A5E43676481002A/RS-AA/001
Data
2 bytes
0x0005
Data
2 bytes
0x0005