Siemens SINAMICS V20 Operating Instructions Manual page 289

Parameter Function
P2021 Modbus address
Sets unique address for converter.
P2022
Modbus reply timeout [ms]
The time in which the converter 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 converter. 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 character
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.
SINAMICS V20 Converter
Operating Instructions, 10/2019, A5E34559884-012
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 Data
changed set
T - -
U, T - -
T - -
- - -
- - -
- - -
- - -
- - -
- - -
Parameter list
8.2 Parameter list
Data Acc.
type Level
U16 2
U16 3
U16 1
U16 3
U16 3
U16 3
U16 3
U16 3
U16 3
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