FBA A parameter conflict

What does 65A1 mean?

The drive has received a request from the PLC via Fieldbus Adapter (FBA A) that it cannot fulfill because the requested functionality is either unavailable or not activated. This indicates a discrepancy between the PLC program's expectations and the drive's current configuration, preventing proper fieldbus control.

• PLC attempting to write to a drive parameter (e.g., P20.01 Reference 1) that is read-only or currently locked by another control source (e.g., local panel).
• PLC requesting a function (e.g., specific control mode) that is not supported by the drive's firmware version or current configuration.
• Mismatch between the PLC's fieldbus configuration and the drive's fieldbus adapter (FBA A) mapping for data words or control bits.
• Drive operating in a state (e.g., fault condition) where certain parameter writes are temporarily inhibited.
• Corrupted parameter data being sent from the PLC via the fieldbus, leading to an invalid write attempt.

Click steps to track your progress.

1. 1

   Review the PLC program for write attempts to drive parameters, ensuring they are valid and writable according to the drive's manual.

2. 2

   Compare the fieldbus mapping (e.g., control words, status words) in the PLC configuration to the drive's FBA A documentation; correct any discrepancies.

3. 3

   Verify the drive's parameter P51.01 (Control place) is set to Fieldbus (e.g., value 4) if control is expected from the PLC via FBA A.

4. 4

   Check the drive's operating mode (e.g., local/remote) and fault status; clear any active faults before attempting parameter writes.

5. 5

   Attempt to write the problematic parameter manually from the drive's control panel to confirm its writability under normal conditions.