====== Alarm Priorities in Lib.Mervis ======


|Priority|Class|Meaning                                                         |
|0 to 15 |0    |Total failure, results in blocking the operation enablement.|
|16 to 31|1    |Total failure, results in blocking the operation enablement.|
|32 to 47|2    |General failure.                                                |
|48 to 63|3    |General failure.                                                |

**Alarm Class** is used to group multiple priorities into one category. This category is then used for reporting between different alarm blocks (AlarmsAggregator, AlarmsExtender, and AlarmsCoupler) using the [[AlarmsStatus.htm|AlarmsStatus]] structure.

If the **priority is odd**, it will automatically reset after it ceases.

For **even classes**, the corresponding alarm output (Alarm*Flag) remains active even in the remembered alarm state (i.e., //Memory, AckedMemory//). For **odd** classes, it is active only if the alarm itself is active (i.e., //Active, ActiveAcked//).