65.5.4.1.4 Static Intrusion Detection

The detectors can be configured to detect either the rising edge or the falling edge on switches via SECUMOD_PIOBUx.SWITCH.

Example: A detector can consist of a normally-closed switch which sends a zero signal to the Protection Unit. When an intrusion attempt occurs, the switch state changes to an open position. The debounce filter waits until an intrusion has been detected for a programmable continuous period to send an alarm signal to the Protection Unit. This is to prevent erroneous intrusion detections.