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5.2 OPC UA Interfaces ToC Previous Next

5.2.15 IPriorityMappingEntryType Interface ToC Previous Next index

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 17 – IPriorityMappingEntryType definition

Attribute Value
BrowseName IPriorityMappingEntryType
IsAbstract True

Subtype of the BaseInterfaceType defined in OPC 10000-5

References NodeClass BrowseName DataType TypeDefinition ModellingRule
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
Conformance Units          
BNM Priority Mapping          

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 Ethernet transport priority inside the VLAN-Tag associated with the PriorityLabel. 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 Variable is supported, the PCP field inside a packet shall be set to the specified PCP value.

PriorityValue_DSCP of DataType UInt32 is the IP transport priority associated with the PriorityLabel. 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 Variable is supported, the DSCP field inside a packet shall be set to the specified DSCP value.

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