Festo CPX DE Series Manual page 84

2. Digital CPX input modules
2−36
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),
AB−4−HARX2−4POL and CPX−M−4−M12x2−5POL:
On these sub−bases the sensor supplies are grouped
together in pairs. 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.
CPX−M−16DE−D:
If there is a short circuit, all sensor supplies of the
module will be switched off in pairs. Ix and Ix+1, Ix+2
and Ix+3, ...
The diagnostic meassages are displayed channel−by−
channel for the inputs Ix, Ix+1, Ix+2, ...
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 0804g