Basic Settings For Communication - Siemens Sinamics G120P Operating Instructions Manual

Converter cabinet units 110 kw - 400 kw
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6.8.3.1

Basic settings for communication

You set the bus address of the inverter using the
address switches on the Control Unit, using pa-
rameter p2021 or in STARTER.
Using parameter p2021 (factory setting: 1) or using
STARTER, you can only set the address, if all
address switches are set to "OFF" (0).
Valid address range: 1 ... 247
If you have specified a valid address using the
address switches, this address will always be the
one that takes effect, and parameter p2021
(factory setting: 1) will not be able to be changed.
The positions of the address switches are de-
scribed in Section: CU230P-2 HVAC Control Unit
(option K98) (Page 87).
Procedure
To change the bus address, proceed as follows:
1. Set the address using one of the subsequently listed options:
– Using the address switches
– With the IOP using p2021
– In STARTER using screen form "Control Unit/Communication/Fieldbus", or using the
2. Switch on the inverter power supply and, if available, the 24 V power supply for the
Control Unit.
3. Switch on the voltages again after all LEDs at the inverter have gone dark.
Inverter cabinet units
Operating Instructions, 12/2014, A5E32923362A
expert list in parameter p2021.
Operation
6.8 Communication via RS485
231

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