SERCOS: Repeated message failure.

What does 850 mean?

Two successive drive telegrams from the same address have failed, causing the NC to automatically switch back to SERCOS phase 0. This is a servo loop or drive fault, indicating persistent communication problems on the SERCOS network.

• Failure of two successive drive telegrams from the same SERCOS address.

Click steps to track your progress.

1. 1

   Check the SERCOS configuration for correctness.

2. 2

   Verify the integrity and connections of SERCOS cables.

3. 3

   Inspect all drives connected to the SERCOS ring for faults.

4. 4

   Initiate a new SERCOS startup.