Chapter 14 Fault Codes and DescriptionsC2000 Plus 
 
ID*  Display on LCD Keypad  Fault Name  Fault Descriptions 
104 
 
CANopen bus off fault 
(CbFE) 
CANopen bus off fault 
Action and Reset 
Action condition 
Hardware
When CANopen card is not installed, CbFE fault occurs. 
Software 
When  the 
master received wrong communication package, CbFE 
fault occurs. 
Too much interference on BUS 
When the CAN_H  and  CAN_L 
communication cable is short, the 
master will receive wrong package, and CbFE fault occurs. 
Action condition  Act immediately 
Fault treatment parameter  N/A 
Reset method  Manual reset 
Reset condition  Cycle the power 
Record  Yes 
Cause  Corrective Actions 
Check if the CANopen card is 
installed 
Make sure the CANopen card is installed. 
Check if the CANopen speed 
is correct 
Reset CANopen speed (Pr.09-37) 
Malfunction caused by 
interference 
1.  Verify the wiring and grounding of the communication circuit. It is 
recommended to separate the communication circuit from the main circuit, 
or wire in 90 degrees for effective anti-interference performance.   
2.  Make sure the communication circuit is wired in series. 
3.  Use CANopen cable or add terminating resistance. 
Communication cable is broken or 
bad connected   
Check or replace the communication cable.