SERCOS: Max. number of active commands exceeded (channel: %d).

What does 851 mean?

The capacity limit of the internal list that holds NC commands destined for a drive has been exceeded. This error occurs when more than 5 simultaneous active commands are present, representing a serious system error.

• Number of simultaneous active commands to a drive exceeding 5.
• Capacity limit of the active command list exceeded.

Click steps to track your progress.

1. 1

   Review and optimize the operational environment or application logic to reduce the number of simultaneous active commands.