23
Events
There are three types of events recognized by the APU:
•
Intrusion or alarm
•
Fault (a bent or broken fiber or a hardware malfunction)
•
Tamper (indicating that the device enclosure has been opened)
When any type of event occurs, an ID field index,
<ID>SZ0001</ID>
, is updated. This ID field
acts as an event counter.
Figure 25:
Intrusion message
The
<DetectionEvent>
field displays the value
Intrusion
, indicating that the sensor cable has
been sufficiently disturbed to qualify as an intrusion attempt. Lines appearing in the document
with the notation
HZONE-X
and
ZONE-X
indicate the affected hyperzone and zone.