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7.7
EXTERNAL ALARM INPUTS, CONTINUED
Figure 7.13: The Second Page Of The 'External Alarm Inputs' Tab
7.7.1
East Perimeter
The first alarm (001) is an example of a perimeter alarm. The alarm contact is connected
to input (3) of the alarm module located in slot (17) of subrack (1). It is defined as a
normally-open alarm circuit and the system will directly follow the incoming state. This
means not only can the alarm be triggered but it can also be cleared by returning the
incoming alarm state to its not-active condition (open). When triggered, the alarm
executes its START MACRO sequence that selects camera (1) onto monitor (3). As the
alarm is assigned to alarm-display-group (1), it will display it's FLASHING alarm message
text onto every monitor that is allocated this alarm display group. Usually this would be
the alarm monitor where the camera was selected. In this example, monitor (3) would
be allocated alarm-display-group (1).
Rev. B
7-21
HMXMC001013
31-Mar-06
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