Siemens SINAMICS V20 Operating Instructions Manual page 273

Parameter Function
P2021 Modbus address
Sets unique address for inverter.
P2022 Modbus reply timeout
[ms]
The time in which the inverter is allowed to respond to the Modbus master. If the forming of a response
needs more time than specified in this parameter, the processing is done, but no response is sent.
P2023 RS485 protocol selection 0 - 3
Select the protocol which runs on the RS485 link.
0
1
2
3
Notice: After changing P2023, powercycle the inverter. During the powercycle, wait until LED has gone off or the
display has gone blank (may take a few seconds) before re-applying power. If P2023 has been changed via
a PLC, make sure the change has been saved to EEPROM via P0971.
r2024[0...1] USS / MODBUS error-
free telegrams
Displays number of error-free USS / MODBUS telegrams received.
Index: [0]
[1]
Note: The state of the telegram information on RS485 is reported regardless of the protocol set in P2023.
r2025[0...1] USS / MODBUS rejected
telegrams
Displays number of USS / MODBUS telegrams rejected.
Index: See r2024
Note: See r2024
r2026[0...1] USS / MODBUS charac-
ter frame error
Displays number of USS / MODBUS character frame errors.
Index: See r2024
Note: See r2024
r2027[0...1] USS / MODBUS overrun
error
Displays number of USS / MODBUS with overrun error.
Index: See r2024
Note: See r2024
r2028[0...1] USS / MODBUS parity
error
Displays number of USS / MODBUS telegrams with parity error.
Index: See r2024
Note: See r2024
SINAMICS V20 Inverter
Operating Instructions, 11/2016, A5E34559884-006
Range Factory
default
1 - 247 1
0 - 10000 1000
1
None
USS
Modbus
Script terminal
- -
USS / MODBUS on RS485
USS on RS232 (reserved)
- -
- -
- -
- -
Can be Scaling
changed
T -
U, T -
T -
- -
- -
- -
- -
- -
Parameter list
8.2 Parameter list
Data Data Acc.
set type Level
- U16 2
- U16 3
- U16 1
- U16 3
- U16 3
- U16 3
- U16 3
- U16 3
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