7510 fault in ABB DCS880 drive indicates FBA A communication. This means cyclical communication between PLC and fieldbus adapter module A or between drive and fieldbus adapter module A is lost.

1. Check the status of the fieldbus communication. documentation of the fieldbus interface.
2. Check the settings of groups 50 Fieldbus adapter (FBA), 51 FBA A settings, 52 FBA A data in and 53 FBA A data out.
3. Check the cable connections.
4. Check the fieldbus termination.
5. Check the fieldbus adapter.
6. Check that the master is able to communicate.