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MAXinBOX 16
expires. The cyclical monitoring can be disabled by simply setting a 0
under this filed.
The following example illustrates the above behaviour:
Example:
Suppose that a cyclical monitoring period of 3 minutes is configured. The trigger value
is “1” and the reaction of the actuator when the alarm is activated consists in moving
the shutter all the way up, while when the alarm is deactivated, the shutter will be
lowered. Assuming that the shutter has been lowered, when the alarm becomes active
the actuator will start raising the shutter. While the alarm stays active, any action over
the shutter channel will be ignored by the actuator. After some time (t2), one “0” arrives
through the alarm object, which makes the alarm turn off and the shutter be raised.
Before the parameterised cyclical monitoring period (3 minutes) ends, a new alarm
deactivation order arrives, so the time count starts again. After 3 minutes without
receiving further values through the alarm object, the alarm will be automatically
activated, making the shutter move up again. As before, any action over the shutter will
be ignored until the alarm is deactivated. See the following figure
“[CX] Alarm”=1
Automatic Alarm
Activation
“[CX] Alarm”=0
“[CX] Alarm”=0
Output status
t1
t2
3 minutes
3 minutes
 Response: sets the response order to be sent to the shutter when the
alarm is triggered:
•
Stop.
•
Up.
•
Down.
•
Specific position.
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