CAN Module Warning/Bus-Off

What does ce6 mean?

The CAN function module on the FIF has reported a 'Warning' or 'Bus-Off' status, indicating underlying communication issues. This often points to problems with bus termination, cable shielding, PE connection, or an overloaded bus. While 'Warning' might allow limited operation, 'Bus-Off' will completely halt communication.

Complete Troubleshooting Guide

1. 1

   Verify that the CAN bus termination resistors are correctly installed and configured.

2. 2

   Check the shield connection of all CAN bus cables for proper grounding and integrity.

3. 3

   Ensure the protective earth (PE) connection for the controller and bus components is secure.

4. 4

   Assess the bus load and, if necessary, reduce the baud rate to improve communication reliability.