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Festo — CPX-F8DE-P — 2022-10d
Diagnostics and error handling
6.3.2
Behaviour in response to channel errors
Status LED Channel
error LED
Module
error LED
Error
no.
Fault description
Remedy
LED
flashes
slowly
1)
2
–
Short circuit 24 V on
input signal
–
No clock signal
–
Incorrect connection
technology
–
Check sensors and
wiring.
–
Adjust connection tech-
nology or function
mode.
2
–
FE or 0 V connected to
T1, T3, T5 or T7
–
Check sensors and
wiring.
–
Check signal form at
module input.
LED
flashes
1x briefly
off
1)
3
–
No signal
–
Antivalent signal not
present before release
of safety function
–
FE connected to T1, T3,
T5 or T7
–
Check sensors and
wiring.
–
Check N/C contact of
sensor.
–
Request antivalent
sensor signal.
1)
29
–
Error in the parameteri-
sation
–
Set permitted mode.