Fieldbus communication fault

What does 34 mean?

The fieldbus on the communication option card is not working. This prevents the frequency converter from communicating with the control system, leading to loss of external control and monitoring. This can halt or disrupt automated processes.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Cycle power to the frequency converter to attempt a reset of the communication module.

2. 4

   Verify fieldbus parameters and settings in the drive and host controller.