Communication error between field-bus gateway and MOVIMOT®

What does 91 mean?

This fault is generated by the bus module and indicates an issue with the RS-485 communication link between the fieldbus gateway and the MOVIMOT® unit, typically stemming from electrical connection problems.

• Faulty electrical connection (RS-485) between the fieldbus gateway and MOVIMOT® (interrupted or switched cable).

Click steps to track your progress.

1. 1

   Check the electrical connection (RS-485) between the fieldbus gateway and MOVIMOT® for continuity and correct wiring.

2. 2

   Note: The fault automatically resets once the cause is removed; a reset via control word is not possible.