Fieldbus Timeout

What does 28 mean?

Rapid stop caused by a loss of communication between the master and slave devices within the configured response monitoring time on the fieldbus. This signifies a disruption in fieldbus data exchange.

• Communication with a fieldbus device has been interrupted.
• Slave device is not responding on the fieldbus network.
• Incorrect fieldbus address configuration.
• Fieldbus network cable issue (e.g., termination, break).

Click steps to track your progress.

1. 1

   Check the communications routine and logic of the fieldbus master controller.

2. 2

   Extend the fieldbus timeout time (P819) or, if appropriate for the application, temporarily deactivate monitoring to diagnose.