PROFIBUS configuration differs

What does A01654 mean?

The PROFIsafe configuration in the higher-level control differs from that in the drive. This inconsistency can lead to communication errors or safety function issues, preventing reliable and safe operation. Specific alarm values (r2124=1 or r2124=2) provide more detail.

• Mismatched PROFIsafe addresses (P60021) between the drive and the safety PLC.
• Different PROFIsafe telegram types (P60022) configured in the drive and the safety PLC.
• Inconsistent safety program checksums due to changes made in the PLC or drive without updating the other.
• The safety PLC configuration was downloaded without acknowledging changes in the drive's safety parameters (e.g., P9700).
• Hardware replacement of a drive component (e.g., Control Unit) which altered the internal safety configuration without re-downloading the safety program from the PLC.

Click steps to track your progress.

1. 1

   Compare the PROFIsafe address (P60021) in the drive with the address configured for the drive in the safety PLC's hardware configuration.

2. 2

   Verify the PROFIsafe telegram type (P60022) in the drive against the type expected by the safety PLC for the safety I/O module.

3. 3

   Perform an upload of the current safety configuration from the drive and compare it against the safety PLC's project data (if software allows).

4. 4

   Initiate a safety acknowledgment procedure in the drive (e.g., P9700=1) to confirm the safety configuration after changes.

5. 5

   If discrepancies persist, re-download the safety PLC program to the safety controller to ensure consistency with the drive's configuration.