Operating Instructions

Commissioning
Configuring communication
6
71 |
118
Siemens
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Smart Infrastructure 2021-10-11
1. Set the variable speed drive's fieldbus address either using the DIP switch on
the Control Unit or via parameter p2021.
2. Please refer to Chapter CU230P-2-BT Control Unit [➙ 22] for the position and
setting of the DIP switch. If you have set a valid address using the DIP switch,
this address always remains valid and p2021 cannot be changed.
 If you set all DIP switches to "OFF" (0), then p2021 defines the address.
A bus address, baud rate or protocol selection that has been changed only
becomes effective once the variable speed drive has been switched off and back
on again.
Restart the variable speed drive after changing the bus address.
USS protocol
Parameter Description
p0015 Select value 108 "USS fieldbus" during basic commissioning.
p2020 Value Baud rate
4
5
6
7
8
9
10
11
12
13
2400
4800
9600
19200
38400
57600
76800
93750
115200
187500
p2021 Valid USS addresses: 1…30
Invalid USS addresses: 0.31…127
p2022 Fieldbus interface USS PZD number
● Setting the number of 16-bit words in the PZD part of the USS telegram
p2023 Fieldbus interface USS PKW number
● Setting the number of 16-bit words in the PKW part of the USS telegram
0
3
4
127
0 Wörter
3 Wörter
4 Wörter
Variable Anzahl Wörter
Setting the address