Festo CPX-FB14 Description page 152

3. Diagnostics
NS (network status)
LED Process
(green/red)
ON
OFF
LED
illuminated
green
ON
OFF
LED flashing
green
ON
OFF
LED is
flashing red
ON
OFF
LED
illuminated
red
Tab. 3/8: "NS" LED status display
3-10
Status
Network OK
Error counter overflow
Failure of the 24 V CAN-receiver
supply
Bus OFF
Error handling
–
Check bus: cables, plug
•
connectors, signal
transmission
Check and restore power
•
supply.
Check bus: cables, plug
•
connectors, signal
transmission (error counter
overflow)
Festo P.BE-FB14-EN en 1411d English