Table of Contents
Advertisement
HOW TO CHECK FOR ERROR
USING THE LEDS
LED Status
RUN L.RUN
SD
-
-
: On,
: Off,
: Flicker
78
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-A7NC is connected to
-
-
CC-Link ver. 2.
Cause
Advertisement
Table of Contents
