Peripheral Faults (Pf) - Festo CPX-FB6 Manual

3. Diagnostics and error handling

3.3.4 Peripheral faults (PF)

3-18
If an error is detected by the valve terminal, a peripheral fault
will be triggered as a common error message, transmitted to
the module and displayed there. This common error message
can be classified more accurately either with the status bits or
the I/O diagnostics interface.
The causes of peripheral faults can be all the error messages
of the CPX terminal, which have also been entered in the
status bits e.g.:
– voltage of the valves and electric outputs below the toler-
ance.
– voltage of the valves and electric outputs switched off
(e.g. with EMERGENCY STOP).
– short circuit in supply voltage to inputs/sensors.
– short circuit or overload at digital outputs.
– further specific error messages of the CPX terminal.
Additional information on error messages of the CPX terminal
can be found in the CPX system description.
Festo P.BE-CPX-FB6-EN en 1207c