The NotificationEventType is used to send simple messages from the machine tool. It is used in all cases that do not require an AlertType, because they don’t have an activated and a deactivated state.

The NotificationEventType is formally defined in Table 69.

Table 69 – NotificationEventType Definition

Attribute		Value
BrowseName		NotificationEventType
IsAbstract		True
References	NodeClass		BrowseName	DataType	TypeDefinition	Other
Subtype of the BaseEventType defined in OPC 10000-5 which means it inherits the InstanceDeclarations of that Node.
0:HasProperty	Variable		Identifier	0:String	0:PropertyType	M, RO

Identifier is used to identify the notification. It should match the code given in the machine tool manufacturer’s specification for the respective message.