Festo Compact Performance Series, Programming And Diagnosis

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3.1.3 Diagnosis of node-specific LEDs
The table below contains possible node-specific LED
displays of the operating status of the CP node.
1. Error displays of operating status (red), fault (green);
( = lights up; = LED flashes; = out)
LEDs Operating status Error treatment
red
green
Line x
Normal, but valves do not switch Check the ...
•
operating voltage of
the valves (tolerance range
20.4 V .. 26.4 V)
•
compressed air supply
red
green Operating voltage not applied Check the ...
•
operating voltage (pin 1 on
node)
red
green
Line x
No communication with
RIO network Check the ...
•
configuration of the RIO
slaves, or correct the
•
address
•
baud rate
•
RIO cable
red
green
(fast) - Controller has issued a RESET
command or
- controller not in operating
status RUN or
- incorrect address setting or
- PLC configuration or
line assignment different
•
Check program
•
Set operating status RUN
•
Correct address
•
Check PLC configuration or
line assignment;
•
Operating voltage on the node:
OFF, then ON.
red
green
(briefly out) Hardware fault Servicing required
3. Diagnosis
CP FB8 9809a
3-5