Siemens SINAMICS G120X - Parameters for Setting Communication Via Modbus RTU; Setting the Address

6.3.5.2 Setting the address
Function description
Procedure
1. Using parameter p2021, set the address using an operator panel or SINAMICS G120 Smart
Access.
Permissible addresses: 0 … 31.
2. Switch off the converter power supply.
3. Wait until all LEDs on the converter are dark.
4. Switch on the converter power supply again.
Your settings become active after switching on.
You have set the bus address.
❒
Parameters
Parameter Description Factory setting
p2021 Fieldbus interface address 0
6.3.5.3 Parameters for setting communication via Modbus RTU
General settings
Fieldbus protocol selection p2030 = 2 (Modbus RTU)
Baud rate p2020 = 7, 19200 bit/s
Setting range: 4800 bit/s … 187500 bit/s
Parity
In the factory, the Control Unit is set for controllers with even parity You can adapt the parity at
your controller using p2031:
● p2031 = 0: No parity, 1 stop bit or 2 stop bits
● p2031 = 1: Odd parity, 1 stop bit
● p2031 = 2: Even parity, 1 stop bit
Advanced commissioning
6.3 Drive control
SINAMICS G120X converter
244 Operating Instructions, 06/2019, FW V1.01, A5E44751209B AC