Festo FB16 Electronic Manual page 163

VIFB16 - 03/05
0506b
5. Diagnosis/error treatment
This error word ("Validity of the inputs") assumes
the hexadecimal value FF
•
a valve terminal is separated from the
FIPIO-bus or
•
the power supply to the electrical inputs
(V
sen) is below the tolerance (e.g. internal fuse
triggered) or
•
the complete supply voltage of the valve
terminal is switched off.
In this case the %MW-words of the input table
(image of the inputs) are no longer valid. They
retain their last valid value. The error word, the
input table of the inputs as well as the diagnostic
information are then updated, even if the
controller is in the STOP status.
as soon as:
h
5-25