Notification Class Object

A notification class object is required for both types of BACnet alarming. It directs alarm or event notifications to specific recipients (devices or management stations). This object also defines which alarm and event notifications a device can receive, the priorities of the event-notification messages, and whether acknowledgments are required.

The following table shows specification suggestions for priority ranges:

Notification Class Priority Ranges

Message Group

Priority Range

Network Priority

Life Safety

00 – 31

Life Safety Message

Property Safety

32 – 63

Life Safety Message

Supervisory

64 – 95

Critical Equipment Message

Trouble

96 – 127

Critical Equipment Message

Miscellaneous Higher Priority Alarm and Events

128 - 191

Urgent Message

Miscellaneous Lower Priority Alarm and Events

192 – 255

Normal Message

The Copy All feature overwrites the intrinsic alarm information of the target objects. If the notification class object in the source object does not exist in the target object, then a notification class object is created.