SERCOS: ActCmdList inconsistent!

What does 852 mean?

The list of active commands is suspected to be inconsistent due to an internal error, leading to its destruction and abortion of access. This is a serious system error, indicating a critical data integrity issue, with no error recovery possible.

• Internal error causing inconsistency or destruction of the active command list.

Click steps to track your progress.

1. 1

   Verify stable supply voltage at the Bosch Rexroth motion controller's input terminals against nominal specifications.

2. 2

   Inspect all SERCOS fiber optic cables and connectors for damage, proper seating, and cleanliness, and verify ring integrity.

3. 3

   Check the system configuration and application parameters for consistency and validity using the engineering software.

4. 4

   Review the motion controller's diagnostic logs and event history for any preceding or co-occurring faults.