Festo VTSA Manuel De L'utilisateur page 19

2.1 Diagnosis / display status LEDs
AS−i Fault
(green) (red)
on out
on flashes
on on
flashes flashes
flashes on
out out
AUX/PWR (green) Meaning
on
out
Inputs (yellow)
on
out
Note
The AS−Interface has an integrated watchdog function
which resets the outputs (solenoid coils) if the bus
communication fails.
Festo VTSA−ASI−...−8E8A−Z 0802NH 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
Additional supply exists
No additional supply or additional supply failed
Meaning
1−signal at input
0−signal at input
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