Cause : CANopen guarding error comes when CANopen Node Guarding detects that one of the slaves does not respond, the CgdE fault occurs. The upper unit sets the factor and time during configuration.

1. Increase the guarding time (Index 100C) and detection times.
2. Verify the wiring and grounding of the communication circuit.
3. Make sure the communication circuit is wired in series.
4. Use CANopen cable or add terminating resistance.
5. Check or replace the communication cable.