3. Diagnosis
3−5
Festo P.BE−CPX−FB13−EN en 0811c
3.2.1 Fault displays of the bus fault/status LED BF
If the device−related diagnosis is activated, faults will also be
sent to the master PLC via the field bus.
The LEDs are shown in their variou
s states as follows:
lights up; flashes; out
BF (Bus fault)
LED (red) Process Status Fault treatment
LED is off
ON
OFF
No fault
(if the green PSLED lights up)
LED flashes
ON
OFF
Field bus connection not OK.
Possible causes:
Station number not correct
(e.g. address assigned twice)
Defective field bus module
Interrupted, short−circuited or
faulty field bus connection
Faulty configuration
Check the ...
· address setting of the DIL
switches in the field bus node
· field bus module/master
· field bus connection
· configuration of the master
with regard to the modules of
the CPX terminal
Tab.3/2:Fault diagnosis with the red LED BF"
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