This OPC UA ObjectType represents the BACnet object type MultiState Output. A multi-state output includes a Present_Value variable whose value represents the desired state of a physical output. The states and algorithms used to generate them are locally defined.

Figure 23 shows an overview for the BACnetMultiStateOutputType with its Properties and related ObjectTypes. It is formally defined in Table 27.

Figure 23 – BACnetMultiStateOutputType overview

The BACnetMultiStateOutputType ObjectType is formally defined in Table 27.

Table 27 – BACnetMultiStateOutputType Definition

Attribute		Value
BrowseName		BACnetMultiStateOutputType
IsAbstract		False
References	NodeClass		BrowseName	DataType	TypeDefinition	Other
Subtype of the BACnetMultiStateType defined in 7.12.
0:HasComponent	Object		EventReporting		BACnetEvent ReportingType	O
0:HasProperty	Variable		Device_Type	String	0:PropertyType	O
0:HasProperty	Variable		Priority_Array	BACnetPriorityValue [16]	0:PropertyType	M
0:HasProperty	Variable		Relinquish_Default	0:UInteger	0:PropertyType	M
0:HasProperty	Variable		Feedback_Value	0:UInteger	0:PropertyType	O

The BACnetMultiStateOutputType ObjectType is a concrete type and can be used directly.

The components of the BACnetMultiStateOutputType have additional subcomponents which are defined in Table 28.

Table 28 – BACnetMultiStateOutputType Additional Subcomponents

BrowsePath	References	NodeClass	BrowseName	DataType	TypeDefinition	Others
EventReporting	0:HasComponent	Object	EventAlgorithm		BACnetCommandFailureAlgorithmType	M

The instance declaration Object EventReporting overrides definitions of the BACnetEventReportingType.

The EventAlgorithm component is changed to TypeDefinition BACnetCommandFailureAlgorithmType and ModellingRule Mandatory if used in the BACnetMultiStateOutputType. The BACnetCommandFailureAlgorithmType is defined in 8.10.

This OPC UA Property, of DataType String, represents the BACnet property Device_Type.

It is a text description of the physical device connected to the multi-state output.

This OPC UA Property, of DataType BACnetPriorityValue [16], represents the BACnet property Priority_Array. The BACnetPriorityValue DataType is defined in 10.6.4.

It is an array that contains prioritized commands that are in effect for this object. See 3.2.1 for details on command prioritization.

This OPC UA Property, of DataType 0:UInteger, represents the BACnet property Relinquish_Default.

It is the default value to be used for the Present_Value when all command priority values in the Priority_Array have a NULL value. See 3.2.1 for details on command prioritization.

This OPC UA Property, of type 0:UInteger, is an indication of the actual value of the entity controlled by Present_Value.