Festo CPX Series Electronic Manual page 96

4. Diagnosis and error treatment
(Fault) CP system fault (location of the fault)
LED (red) Sequence
ON
OFF
LED is out
ON
OFF
LED flashes
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
LED lights up
4−12
Status
No fault.
Fault in the CP communica
tion
Short circuit/overload
Undervoltage
On one CP string or one
CP module:
CP module lost / fault
CP configuration fault
Short circuit CP string
On multiple CP strings or
multiple CP modules:
CP module lost / fault
CP configuration fault
Short circuit CP string
Recognised string
assignment does not
correspond to saved
string assignment; save
key was not pressed
String assignment
cannot be saved
(configuration not
capable of being saved)
Unknown fault
Internal CPX communica
tion
Starting phase
C Bus fault
Fault Fault treatment
number
See fault numbers
34
in section 4.2,
Tab 4/2 Tab. 4/2
2
5
34
35
36
34
35
36
35
35
255 Switch power
·
supply off and
back on, replace
module if
necessary
None.
131 See CPX system
manual
Festo P.BE−CPX−CP−E N en 0405NH