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Browse Large Number of Collectors and Tags

About this task

In the OPC UA HDA server, the flat address space is used by default. This type of object model is used to browse a small number of tags. If you want to browse a large number of collectors and tags, enable the hierarchical address space.

Procedure

Access Registry, and then go to the following key folder: .
- For Windows (32-bit): HKEY_LOCAL_MACHINE\SOFTWARE\Intellution, Inc.\iHis- torian\HDAServer\
- For Windows (62-bit): HKEY_LOCAL_ MACHINE\SOFTWARE\Wow6432Node\\Intellution, Inc.\iHistorian\HDAServer\
Create a DWORD named HierarchicalAddressSpace.
In the Value box, enter 255.

Note: For a flat address space, this value is set to 0.
Select OK, and then close the Registry.
Restart the OPC Classic HDA server by disconnecting and reconnecting all the OPC HDA clients.