The status diagram of system alarms shows all the possible states of the Alarm objects and their changes. It is illustrated in the following figure.
Normal | The condition of finishing an alarm is met. If it is not defined then the condition of starting the alarm has disappeared. |
Normal* | The change into the Unacknowledged state occurs if the alarm object is defined as an acknowledgement-required alarm in its configuration. |
Alarm | The condition of starting an alarm is met. |
Block | The alarm is blocked by the operator. |
Acknowl. | The alarm is acknowledged by the operator. |