IDEC WindSRV - Manual (Page 73)

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Tag groups can be added at any level from the device-level down, and multiple tag groups can be nested together to fit
the application's needs. As seen in the OPC Quick Client dialog above, the fully qualified OPC item path is "Channel1.
Device1.Machine1.Cell1.Tag1". For this OPC item, "Machine1" and "Cell1" segments are nested tag groups.
Note: With the server's online full-time operation, these parameters can be changed at any time. Any changes made to
the tag groups will take effect immediately. If the name is changed, OPC clients that have already used that tag group
as part of an OPC item request will not be affected until they release the item and attempt to reacquire it. New tag
groups added to the project will immediately allow browsing from an OPC client. Utilize the User Manager to restrict
access rights to server features in order to prevent operators from changing the parameters.
What is the Alias Map?
The Alias Map provides both a mechanism for backwards compatibility with legacy server applications as well as a way
to assign simple alias names to complex tag references. This is especially useful in client applications that limit the size
of tag address paths. Although the latest version of the server will automatically create the alias map, users can add
their own alias map entries to compliment those created by the server. Users can also filter the server created aliases
so that the only ones visible are their own.
Alias Map elements can be added, edited, deleted, exported and imported by clicking on the appropriate icon buttons in
the Alias Map window. The Alias Properties dialog allows an alias to be added or edited. The image below displays the
various alias map entries generated for the server project.
Descriptions of the icons are as follows.
 To create a new Alias, click .
 To edit an existing alias, select the alias from the list and then click .