Connecting Inverter To Can Bus; Setting The Node Id And Baud Rate - Siemens SINAMICS G120 Operating Instructions Manual

7.8.3.1

Connecting inverter to CAN bus

Connect the converter to the fieldbus via the 9-pin SUB-D pin connector.
The connections of this pin connector are short-circuit proof and isolated. If the converter
forms the first or last slave in the CANopen network, then you must switch-in the bus-
terminating resistor.
For additional information on the SUB-D pin connector and on the bus-terminating resistor,
please refer to Section Overview of the interfaces (Page 56).
7.8.3.2

Setting the node ID and baud rate

Setting the node ID
You set the node ID of the inverter using the address
switches on the Control Unit, using parameter p8620
or in STARTER.
Valid address range:
If you have specified a valid node ID using the
address switches, this node ID will always be the one
that takes effect, and parameter p8620 (factory
setting: 0) will not be able to be changed.
The positions of the address switches are described
in Section: Overview of the interfaces (Page 56).
Procedure
To change the bus address, proceed as follows:
1. Set the address using one of the subsequently listed options:
2. Switch on the inverter power supply and, if being used, the 24 V supply
3. Switch on the voltages again after all LEDs at the inverter have gone dark.
This means that you have changed the bus address.
Converter with the CU250S-2 Control Unit (vector)
Operating Instructions, 06/2013, FW V4.6, A5E31759476B AB
1 ... 127
– using the address switches
– with an operator panel using p8620
– in STARTER using screen form "Control Unit/Communication/Fieldbus", or using the
expert list with p8620
for the Control Unit.
Configuring the fieldbus
7.8 Communication over CANopen
211