Diagnostic Bus Leds - Festo CP-FB11-E Programming Manual

3. Diagnosis

3.1.3 Diagnostic bus LEDs

LED
BUS POWER
BUS POWER
BUS POWER
BUS STATUS
BUS STATUS
BUS STATUS
Festo P.BE−CP−FB11−E−EN en 0802d
Possible DeviceNet−specific LED displays of the operating
status of the CP node are shown in the following diagram:
( lights up; ;
Operating status
Operating voltage of bus
interface is applied
Operating voltage of bus
interface is not applied
Operating status normal, data
exchange runs
or
Operating status normal, but
valves do not switch.
Possible causes
Compressed air supply not
OK.
Pilot exhaust blocked
Lights up once after switching
on (LED test)
Node is ready for data ex
change, but has not yet been
intialized by the master after
having been switched on
flashes; out)
Error treatment
None
Check bus operating voltage con
nection (bus plugs pins 2 and 3)
None
Check the ...
S compressed air supply
S pilot exhaust channels
None
S Start communication
3−7