Unblocking blocked alarms allows the operator to unblock an alarm (selection of alarm). When an alarm is in the Blocked state, the status of the alarm object may not be changed to another state while the alarm is not unblocked by the operator.
To unblock an alarm
The alarm will be evaluated immediately after unblocking. It means that the alarm in the Blocked status will change its status into one of Normal or Alarm states according to the evaluation of conditions to raise and finish the alarm, that has been defined at the object configuration.
Unblocked alarms will be displayed either in the list of critical alarms or uncritical alarms (according to the configuration).