Calling
Activate method over the
active alarm has no effect. An
inactive alarm is activated. The behavior of the alarm during the activation is specified in the "
Inactivate type" configurator.
If there are several instances of the alarm item with the same identifier (caused by states of alarm items inactive unacknowledged [blue]), then the last, the latest old, alarm item is activated.
After the attempt to activate non-existing alarm item (wrong
sId parameter), an error occurs
in the INFO system only if in the corresponding
PmaAlarmGroup object there is no alarm item with the checked configurator "
Template for dynamically created items" (it means that all alarm items of the
PmaAlarmGroup object are statically configured).
The method is
synchronous, it means that it is processed immediately by the alarm subsystem. Nevertheless writing the history to disk is
asynchronous, it means that this method passes the request for writing into the history of alarms subsystem, it is placed into the queue of requests and it is processed later by the alarm subsystem.