Fault Treatment - Festo CPX-FB6 Electronic Manual

3. Diagnosis and error treatment
3.4

Fault treatment

3−20
The reaction of the CPX terminal to the following faults de
pends on the configured reaction of the master module and
the parametrized Fail safe setting:
telegram failure
master stop
interruption in the bus cable.
Depending on the parametrizing, the outputs (valves and
electric outputs) will be switched off (factory setting) or retain
their status (see CPX system manual).
Warning
Make sure 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.
Please note
Please note the following if the outputs are reset after PLC
stop, field bus 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: pressurized, exhausted or blocked).
Festo P.BE−CPX−FB6−EN en 0402b