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3. Diagnosis
3.1.3 Diagnosis LED BUS ERROR
LED
Colour
red
BUS ERROR
flashes fast
red
BUS ERROR
flashes slowly
(1 second inter-
vals)
red
BUS ERROR
lights up
*) Moeller: LED flashes until the input/output of the CP system is addressed the
first time by the master
3-6
The following table shows the possible field bus specific LED
displays on the operating status of the CP node.
Error displays BUS ERROR;
= lights up; ;
Operating status
Field bus address not per-
mitted
or
with Festo: S1, S2 incorretly
set
Field bus connection not OK.
Possible causes:
– Field bus address not cor-
rect (e.g. address as-
signed twice)
– Switched off or defective
field bus module
– Interrupted, short-cir-
cuited or faulty field bus
connection
– Configuration faulty nom-
inal < > actual status
Moeller *)
Only with ABB CS31:
no diagnostic message which
can be interrogated via the
field bus
= flashes;
= off
Error treatment
Correct field bus address
Festo:
1;...; 98
ABB:
0;...; 60
Moeller:
2;...; 98
Check the ...
S setting of the address se-
lector switch
S field bus module
S field bus connection
S configuration
See
diagnosis of field bus
Festo P.BE-CP-FB5-E-EN en 0112a
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