This OPC UA Interface is used to translate a priority label like PriorityLabel (defined in Part 14) to a concrete network priority value (e.g. DSCP or PCP).

Note: This UA Interface is typically used to form a mapping rule table containing a set of object entities implementing the IPriorityMappingEntryType. Each network interface supporting priority mapping may reference such a mapping table Object.

Table 16 – IPriorityMappingEntryType definition

Attribute	Value
BrowseName	IPriorityMappingEntryType
IsAbstract	True
References	NodeClass	BrowseName	DataType	TypeDefinition	ModellingRule
Subtype of the BaseInterfaceType defined in OPC 10000-5
HasComponent	Variable	MappingUri	String	BaseDataVariableType	Mandatory
HasComponent	Variable	PriorityLabel	String	BaseDataVariableType	Mandatory
HasComponent	Variable	PriorityValue_PCP	Byte	BaseDataVariableType	Optional
HasComponent	Variable	PriorityValue_DSCP	UInt32	BaseDataVariableType	Optional

MappingUri of DataType String specifies a named identifier of a well-known predefined set of priority labels.

PriorityLabel of DataType String is a textual representation of the desired transport priority configured within the QoS settings of a communication relation, e.g. WriterGroup defined in Part14.

PriorityValue_PCP of DataType Byte is the VLAN Tag based transport priority attached to a priority label. The devices shall translate the defined priority label for each packet according to the communication relation (e.g. WriterGroup) and linked interface. Depending on the transport protocol mapping and if the value is set, this specific PCP shall overwrite the PCP field inside a packet.

PriorityValue_DSCP of DataType UInt32 is the IP transport priority attached to a priority label. The devices shall translate the defined priority label for each packet according to the communication relation (e.g. WriterGroup) and linked interface. Depending on the transport protocol mapping and if this value is set, this specific DSCP shall overwrite the DSCP field inside a packet.