Festo VMPA-ASI-EPL-4E4A-Z Serie Mode D'emploi page 19

Diagnosis / display status LED for AS−Interface
AS−i Fault
on off
on flashes
on on
flashes flashes
flashes on
off off
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−...−4E4A−Z 1010a English
Meaning
AS−Interface voltage applied, no fault
Short circuit/overload at input
Bus communication failed (watchdog expired)
Additional power supply not applied or
undervoltage (possibly valves do not switch),
periphery fault
AS−Interface address not set (= 0)
AS−Interface voltage not applied
Meaning
Additional supply exists
No additional supply or additional supply failed
1−signal at input/output
0−signal at input/output
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