Siemens SINAMICS V20 Operating Instructions Manual page 235

Parameter Function
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
Select the protocol which runs on the RS485 link.
0
1
2
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
r2029[0...1] USS start not identified
Displays number of USS telegrams with unidentified start.
Index: See r2024
Note: Not used on MODBUS.
r2030[0...1] USS / MODBUS BCC /
CRC error
Displays number of USS / MODBUS telegrams with BCC / CRC error.
Index: See r2024
Note: See r2024
r2031[0...1] USS / MODBUS length
error
SINAMICS V20 Inverter
Operating Instructions, 09/2014, A5E34559884
Range Factory Can be
default changed
0 - 10000 1000 U, T
0 - 2 1 T
None
USS
Modbus
- - -
USS / MODBUS on RS485
USS on RS232 (reserved)
- - -
- - -
- - -
- - -
- - -
- - -
- - -
Parameter list
7.2 Parameter list
Scaling Data Data
set type
- - U16
- - U16
- - U16
- - U16
- - U16
- - U16
- - U16
- - U16
- - U16
- - U16
Acc.
Level
3
1
3
3
3
3
3
3
3
3
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