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Scope: Core (OPC-10000-*) All specs

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OPC-10000-17 – OPC Unified Architecture - Part 17: Alias Names

6.3.1 Definition

would apply the AliasNameSearchPattern to all AliasNames that are defined under TagVariables , Topics and any other AliasNameCategoryType instance in the hierarchy. Well-known AliasNameCategories are defined in this document. Other
OPC-10000-17 – OPC Unified Architecture - Part 17: Alias Names

9.3 TagVariables

TagVariables TagVariables is an instance of AliasNameCategoryType . TagVariables shall restrict instances of AliasNameType to those that have an AliasFor References that point to Variables. The TagVariables instance is formally defined ... Table 23 . Table 23 - TagVariables definition Attribute Value BrowseName TagVariables References NodeClass BrowseName DataType TypeDefinition OrganizedBy by the Aliases defined in 9.2 HasTypeDefinition ObjectType AliasNameCategoryType Defined in 6.3 ConformanceUnits AliasName
OPC-10000-17 – OPC Unified Architecture - Part 17: Alias Names

A.2 AliasNames used within a single Server

organizational item for grouping the well information. The example illustrates AliasNames that are both TagVariables and Topics
OPC-10000-17 – OPC Unified Architecture - Part 17: Alias Names

A.5 Client use of an AliasName Server

Client use of an AliasName Server AliasNames allow a Client to find TagVariables or Topics easily. Many industrial systems assign tags to specific measurement or sensors. These tags follow established
OPC-10000-17 – OPC Unified Architecture - Part 17: Alias Names

B.2 GDS

example illustrates. What is required is the availability of all AliasNames in the mandatory TagVariables folder and Topics folder, but a GDS could also choose to replicate or even merge
OPC-10000-17 – OPC Unified Architecture - Part 17: Alias Names

C.2 Register a Server

tree list for any of the well-known AliasNameCategoryType Objects defined in 9.3 (i.e. TagVariables or Topics ). The organization of the actual structure of the AliasNameCategoryType hierarchy is specific