Siemens SINAMICS G120P CU230P-2 - Modbus RTU

Commissioning
4.3 Connecting the inverter to the fieldbus
CU230P-2 Control Units
Compact Operating Instructions, 01/2017, A5E38815802B AA
43
4.3.2
Modbus RTU
Settings for Modbus RTU
Parameter
Explanation
p0015 = 109
Macro drive unit
Set communication via Modbus RTU
Default setting of the interfaces (Page 16)
p2020
Fieldbus interface baud rate
p0015 = 109 sets p2020 = 6
4: 2400 baud
5: 4800 baud
6: 9600 baud
7: 19200 baud
8: 38400 baud
9: 57600 baud
10: 76800 baud
11: 93750 baud
12: 115200 baud
13: 187500 baud
p2021
Fieldbus interface address
Valid USS addresses: 1 … 247.
The parameter is only active if address 0 is set at the Control Unit address switch.
A change only becomes active after the inverter power supply is switched off and
switched on again.
p2024
Fieldbus
interface
times
[0] Maximum permissible telegram processing time of the Modbus
slave
[2] dead time between two telegrams
r2029
Fieldbus
interface
error statis-
tics
[0] number of error-free telegrams
[1] number of rejected telegrams
[2] number of framing errors
[3] number of overrun errors
[4] number of parity errors
[5] number of starting character
errors
[6] number of checksum errors
[7] number of length errors
p2030 = 2
Fieldbus interface protocol selection
p0015 = 109 sets p2013 = 2 → Modbus RTU
p2031
Fieldbus interface Modbus
parity
0: No parity
1: Odd parity
2: Even parity