The BACnetChangeOfCharacterStringNotificationType is formally defined in Table 90.

Table 90 – BACnetChangeOfCharacterStringNotificationType Definition

Attribute		Value
BrowseName		BACnetChangeOfCharacterStringNotificationType
IsAbstract		False
References	NodeClass		BrowseName	DataType	TypeDefinition	Other
Subtype of the BACnetEventNotificationType defined in 9.4.2.1
0:HasProperty	Variable		ChangedValue	0:String	0:PropertyType	M
0:HasProperty	Variable		AlarmValue	0:String	0:PropertyType	M
0:HasProperty	Variable		StatusFlags	BACnetStatusFlags	0:PropertyType	M

The Property ChangedValue represents the monitored value.

The Property AlarmValue conveys the character string of pAlarmValues related to the event state transition reported:

(a) for transitions to OFFNORMAL, the character string of pAlarmValues that matches pMonitoredValue,

(b) for transitions to NORMAL, the character string of pAlarmValues that match pMonitoredValue at the time of the most recent transition to OFFNORMAL.

This OPC UA Property, of DataType BACnetStatusFlags, represents the BACnet property Status_Flags. The BACnetStatusFlags DataType is defined in 10.3.7.