Enable configuration of OPC UA namespace index

A "namespace index" is a number a client can utilize to identity the data to be accessed from an OPC UA server. Changes to the configuration may cause the namespace index values to also be modified, causing difficulty for some OPC UA clients. FactoryTalk Linx Gateway provides the ability to override the default namespace index numbers and assign numbers to help OPC UA clients connect to the service.
With the
Enable configuration of
OPC
 UA namespace index
 option turned off:
  • A single namespace index is used for data from
    FactoryTalk Directory
    .
    FactoryTalk Linx Gateway
     pulls data from multiple tags and structures which can exist in multiple controllers that use the same datatype name with the prefix [Shortcut name] but defined by a different layout.
With the
Enable configuration of
OPC
 UA namespace index
 option turned on:
  • The namespace index can represent each data source of
    FactoryTalk Linx
     shortcuts or UA Connector endpoints to avoid a collision where two sources have different types with identical type and tag names. The common index is 10 for other types of data servers.
OPC
 UA namespace index value
The valid range of namespace index is from 0 through 9999.
By default, a new index is assigned for a new added
FactoryTalk Linx
 shortcut or a new added UA Connector endpoint.
To edit the index
  • Select the tag row and then click Edit index icon.
    TIP:
    • If a tag ID starts with ''[xxx]'' from
      OPC
       DA Data Server (for example, tags that originate from RSLinx Classic), it will have an individual
      OPC
       UA namespace index not the common index as 10.
    • We don’t recommend an index sequence with large gaps.
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