Pilz PNOZ m ES CANopen - Manual (Page 20)

Operation
Operating Manual PNOZ m ES CANopen
1002699­EN­03 20
LED Key
ERR CAN controller is in "Bus off" status
1 Error threshold value has been reached, the CAN controller has re­
ceived too many error telegrams
2 Monitoring error, activation of master­slave monitoring error, e.g.
heartbeat monitoring
3 Error in "Synchronisation" operating status, a synchronisation tele­
gram, e.g. with simultaneous writing on several devices, did not occur
within the configured time
No error