The Alarm Delay property enables you to configure
digital, analog, and advanced
alarms so that they do not activate unless their
triggering conditions remain true for a specified period.
For analog alarms, this means the analog variable
need to fall within a specified range for the duration of the alarm
delay period before an alarm will activate. In the case of digital
and advanced alarms, the triggering condition of the digital
variable or Cicode expression
need to remain true for the delay period.
An example of where alarm delay could be useful is in monitoring temperature. By setting a delay period, you can filter out momentary alarms caused by the temperature moving in and out of different ranges.
See Also