Festo CPX DE Series Manual page 126

4. Input modules
4−34
Please note
Please note the following when using the input modules:
CPX−4DE, CPX−8DE, CPX−16DE and CPX−8NDE: If there is
a short circuit, all sensor supplies of the module will be
switched off together.
CPX−8DE−D: If there is a short circuit, all sensor supplies
of the module will be switched off channel−by−channel.
Exception with sub−bases AB−4−M12x2−5POL(−R) and
AB−4−HARX2−4POL:
The sensor supplies are grouped together in pairs on
these sub−bases. The following are switched off
together: Ix and Ix+1, Ix+2 and Ix+3, ...
The diagnostic messages are therefore only for the
inputs Ix, Ix+2, Ix+4 and Ix+6. The inputs Ix+1, Ix+3, Ix+5
and Ix+7 do not generate a diagnostic message.
Providing it is not programmed otherwise, the sensor
supply voltage will be switched on again automatically
when the short circuit is eliminated.
Festo P.BE−CPX−EA−EN en 05602d