RS485 timeout

What does F43 mean?

Communication over the RS485 interface between the inverter and a PC, or to the FSE24B module, has been interrupted. This fault does not lock the drive and clears automatically once communication is reestablished, indicating a transient or connection issue.

• Physical connection interruption between the inverter and a PC via RS485
• Interruption in communication link to the FSE24B interface module
• Loss of voltage supply to the FSE24B communication module

Click steps to track your progress.

1. 1

   Verify the physical RS485 connection cable between the inverter and the PC.

2. 2

   Check the voltage supply to the FSE24B communication interface module.

3. 3

   Inspect parameter P808 settings related to auxiliary voltage output, which might affect FSE24B power.