Festo VIFB-02 Series Manual page 107

VIFB8 – 02
LEDs Operating status
Green on normal
Red on
Red off 24 V operating voltage for
electronic components not applied
or hardware error
Green off No communication on RIO
Green blinking Programmable controller has
issued a RESET command or
programmable controller not in
RUN mode
Fig. 6/2: LED display – operating status
6-4
6. Diagnosis/error treatment
Possible LED displays indicating the operating
status of the valve terminal/valve sensor terminal
are listed below.
Error treatment
None
Check operating voltage
Check operating voltage,
configuration of RIO slave
and correct if necessarry
Check program and correct if
necessary. Set to RUN mode
9706