Festo CDVI-DN Manual page 79

3. Diagnostics
Extension of the CDVI-DN (examples)
Tab. 3/4: Reaction in the event of a deviation between the CP extension and the DIL
switch setting
Festo P.BE-CDVI-DN-EN en 0805a
Fault diagnosis with the CP LED
A deviation of the actual CP extension of your CDVI-DN from
the CP extension set on the DIL switch can cause problems
when starting the system. Refer here to section 1.2.2.
The following table shows the reaction.
Deviation
Extension
>
greater than
the DIL switch
setting
Extension
<
smaller than
the DIL switch
setting.
Module is
missing.
Note
Make a new nominal-actual comparison in the event of
•
any deviations.
Reaction
– System starts.
– LED CP lights up in red.
Superfluous, non-configured
module is ignored.
– System starts.
– LED CP lights up in red.
The missing module is identi-
fied automatically if it is added
later on.
3-7