Applies To:
  • CitectSCADA, VijeoCitect
Summary:
 
If you try to import tags via "the OPC tag import" feature, an item called
"Item" under an alias name of "Alias" in OFS will be given a name of "Alias_Item" in SCADA v7.1 .

However, in v7.0, the variable would be given a name of "AliasItem".

This is a change of behaviour as the name in v7.1 contains an extra underscore
character. This may be an issue for customers upgrading an existing v7.0
project to v7.1.
A simple "refresh linked tags" would potentially generate a number of "Tag not defined" compile
errors during compilation, as the whole variabale.dbf would then not match the
rest of the project configuration (pages, trends, alarms, cicode, ...)

Solution:
 
This issue can easily be fixed by modifying the import format file:

 - You should go to the Config folder, and open the OPC.fmt file (if using the OPC database type), or OFS.fmt (if using Speedlink via OFS.)

- After the [ImportFilterMap] section , add the following text:
[TagName2Name]
Rule1={%s}_{%s} -> $1$2

- Save the file, and try the import again. The above rule will ensure that any tag containing an _ character will be created in SCADA without the _.
There is a small catch however: you need to make sure that the alias name in OFS does not contain an _ character.
The item name itself can contain _ characters, there should be no problem.
Keywords:
 OFS, OPC, import, _, underscore, alias, item

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