Diagnosis Of Node-Specific Leds - Festo Compact Performance Series Programming And Diagnosis

3. Diagnosis

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