Setting The Monitoring Of The Communication - Siemens Sinamics G120P Operating Instructions Manual

Operation
6.9 Communication over CANopen
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 p8620
– 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.
Setting the data transfer rate
You set the data transfer rate using parameter p8622 or in the STARTER
"Control Unit/Communication/CAN" screen form under the "CAN interface" tab.
Setting range: 10 kbit/s ... 1 Mbit/s (factory setting: 20 kbit/s). The maximum permitted cable
length for 1 Mbit/s is 40 m.
In order that a newly set or modified data transfer rate becomes effective, switch on the
inverter power supply and, if being used, the 24 V supply for the Control Unit. Switch on the
voltages again after all LEDs at the inverter have gone dark.
6.9.3.3

Setting the monitoring of the communication

To monitor the communication, use one of the following methods:
• Node guarding / life guarding
• Heartbeat
Node guarding / life guarding
Principle of operation
● Node guarding:
Is always active if heartbeat is not activated (p8606 = 0). Node guarding means the
master sends monitoring queries to the inverter which then answers.
The inverter does not monitor the communication. Set the responses to a bus failure in
the master.
290
expert list with p8620
Inverter cabinet units
Operating Instructions, 12/2014, A5E32923362A