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

LED display
ASI LED Fault LED Meaning
on off
off off
flashes on
on flashes
flashes flashes
on on
AUX/PWR
on
off
Status LEDs
on
off
Please note
The AS−Interface has an integrated watchdog function
which resets the outputs if there is a bus communica
tion failure.
Festo CPA..−ASI−4E4A−Z 0303NH English
AS−Interface voltage applied, no fault
No AS−Interface voltage
AS−Interface address not set (= 0)
With additional power supply:
Short circuit/overload at input
Without additional power supply:
Short circuit/overload at input or overload
at valves
Peripheral fault (see Technical specifications)
Bus communication failed (watchdog expired)
Meaning
Additional power supply applied
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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