Festo CPX-FB33 Manual page 94

3. Diagnosis
3−14
You can set two types of fault reactions of the controller:
Hard fault reaction:
the controller switches to the operating mode STOP"
when a fault occurs.
Soft fault reaction:
the controller remains in the operating mode RUN"
when a fault occurs.
Warning
Ensure that valves and outputs are put into a safe state
·
if the faults named occur.
An incorrect status of the valves and outputs can lead to
dangerous situations.
Note
Please note the following if the outputs are reset after
PLC stop, network interruption or fault:
Single−solenoid valves move to the basic position.
Double−solenoid valves remain in the current position.
Mid−position valves move to the mid−position (depend
ing on valve type: pressurised, exhausted or blocked).
Festo P.BE−CPX−PN IO−EN en 0710NH