Calling the Activate
method over the active
alarm has no effect. An inactive
alarm is activated. The behaviour of the alarm during the activation is specified by the "Inactivate type
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 parameter sId
), 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 to the history to the alarm subsystem, it is placed into the queue of requests and it is processed later by the alarm subsystem.