Cause : FBA A communication comes when cyclical communication between the supply unit and fieldbus adapter module A or between PLC and fieldbus adapter module A is lost.

Programmable fault: 150.02 FBA A comm loss function

1. Check status of fieldbus communication.
2. See user documentation of fieldbus interface.
3. Check settings of parameter groups 150 FBA, 151 FBA A settings, 152 FBA A data in and 153 FBA A data out.
4. Check cable connections.
5. Check if communication master is able to communicate.