Acknowledging alarms in real time

When tag data transitions from a normal to an alarm state, a new instance of its alarm is generated. The InTouch Distributed Alarm system tracks each alarm instance through the following states:

• When the tag first enters the alarmed state

• When the alarm makes a sub-state transition, if the alarm is a multi-state alarm

• When the alarm returns to normal

• Whether the alarm is waiting for an acknowledgment

• When the alarm is acknowledged

The life cycle of an alarm instance ends when the tag value associated with the alarm returns to a normal, unalarmed state. A subsequent transition to the alarmed state generates a new alarm instance.