Mitsubishi Electric FR-A8NC Instruction Manual page 91

LED status
RUN L.RUN SD
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
   
— — —

: ON, : OFF, : Flicker
90
HOW TO CHECK FOR ERROR USING THE LEDS
RD L.ERR
 Normal communication is made but CRC error has occurred due to noise.
 Normal communication
 Hardware fault
 Hardware fault
 Cannot answer due to CRC error of receive data.
 Data sent to the host station does not reach destination.
 Hardware fault
 Hardware fault
 Polling response is made but refresh receive is in CRC error.
 Hardware fault
 Hardware fault
 Hardware fault
 Data sent to the host station is in CRC error.
There is no data sent to the host station, or data sent to the host station cannot be received

due to noise.
 Hardware fault
 Cannot receive data due to break in the cable, etc.
 Invalid baud rate or station number setting
 Baud rate or station number changed during operation.
Baud rate or station number changed during operation.

— Master station is connected to CC-Link ver. 1 and FR-A8NC is connected to CC-Link ver. 2.
Cause