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AVEVA™ Instrumentation

Edit the List of Available Tag Codes

  • Last UpdatedNov 05, 2025
  • 3 minute read

The list of available tag codes can be edited. This must be done before any tag codes are specified for a new tag format, or any changes to tag codes specified for an existing tag format (the Tag Codes button is disabled once a tag code is selected).

  1. In the Tag Format window, click Tag Codes.

    Either the Select Tag Codes for Instruments window or the Select Tag Codes for Loops window is then displayed, as appropriate (both are used in the same way). For example:

    The window lists all tag codes. Tag codes currently available when constructing tag formats have their Select checkboxes checked.

  2. To make further tag codes available, check their Select checkboxes.

  3. To make a currently available tag code unavailable, uncheck its Select checkboxes. Note that this cannot be done for tag codes that have been used to construct a tag format. A message is displayed to inform you of this if it is attempted.

Create New Tag Codes

New tag codes can be created.

  1. Click New. The Add New Tag Code window is then displayed:

  2. Enter a unique name in the Field Name field.

  3. In the Caption field, enter the text that will be displayed to represent the tag code to Users.

  4. From the Datatype list, select either Text, Numeric or Integer as required.

  5. Specify the maximum number of characters for the new code in the Length field.

  6. If required, enter an example of a value for the tag code in the Example text field.

  7. Click New to clear all the window of all data.

  8. Click OK or Apply to save the changes. The new code is then added to the list of tag codes in the Select Tag Codes for Instruments or the Select Tag Codes for Loops window.

    Note: New tag codes automatically have their Select checkboxes checked.

    Edit Tag Codes

    To edit an existing tag code

    1. Select it and click Edit.

      The Edit window is then displayed. For example:

    2. Modify the attributes of the tag code as required, then click OK or Apply. Note that the field name cannot be edited.

      Delete Tag Codes

      1. To delete tag codes, select them and click Delete. Multiple tag codes may be selected for deletion.

        A message will be displayed requesting that you confirm the deletion.

      2. Click Yes to continue.

        Note that system tag codes (in other words, those supplied with the product) and those that have already been used to construct a tag format, cannot be deleted. A message is displayed to inform you of this if it is attempted.

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