The ZoneAlarmType represent zone-related text messages (alarms, error messages, warnings, information) of the peripheral device and is a subtype of HelpOffNormalAlarmType as defined in OPC 40083.

NOTE: For messages related to the whole device, the HelpOffNormalAlarmType shall be used.

Table 22 – ZoneAlarmType Definition

Attribute	Value
BrowseName	ZoneAlarmType
IsAbstract	False
References	Node Class	BrowseName	DataType	TypeDefinition	Other
Subtype of 3:HelpOffNormalAlarmType defined in OPC 40083

The SourceNode (included in BaseEventType) shall contain the NodeId of the related zone. In case of medium or high severity, the client can prevent the use of this zone.