Festo CPA-GE-ASI-8E8A-Z Serie Manual Del Usuario página 19

Diagnosis / LED display
ASI LED Fault LED
on off
off off
flashes on
flashes flashes
on flashes
on on
AUX/PWR LED
on
off
Status LEDs
on
off
Note
The AS-Interface has an integrated watchdog function
which resets the outputs if there is a bus communica-
tion failure.
Festo CPA...-ASI-8E8A-Z 1108a English
Meaning
AS-Interface voltage applied, no fault
No AS-Interface voltage
AS-Interface address not set (= 0)
Additional power supply not applied or
undervoltage (possibly valves do not switch),
periphery fault
Short circuit/overload at input
Bus communication failed (watchdog expired)
Meaning
Additional power supply applied, no fault
Additional power supply is missing or is less
than approx. 6 V
Meaning
1 signal at input/output
0 signal at input/output
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