Festo VMPA-ASI-EPL-8E8A-Z Serie Manual Del Usuario página 19

Diagnosis / display status LED for AS-Interface
AS-i Fault 1
Fault 2
on off
off off
flashes on
on flashes Short circuit/overload at input
flashes flashes Additional power supply not applied, undervoltage
on on
AUX/PWR
on
off
Display status LED for inputs
on
off
Note
The AS-Interface has an integrated watchdog function
which resets the outputs if the bus communication
fails.
Festo VMPA-ASI-EPL-...-8E8A-Z/-CE 1104b English
Significance
AS-Interface voltage present, no fault
AS-Interface voltage not applied
AS-Interface address not set ( = 0)
(possibly valves do not switch), periphery fault
Failure of bus communication
(Watchdog expired)
Significance
Additional supply exists
No additional supply or additional supply failed
1-signal at input/output
0-signal at input/output
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