Create a tag

Add a tag to allocate and reference data stored in the controller. Add a tag to a program, alarm, or add-on instruction. The default values for a new tag are:
  • Data Type -- DINT
  • Usage -- LOCAL
  • Style -- DECIMAL
To create a tag
  1. On the explorer bar, select System icon
    System
    .
  2. In
    System
    , right-click the item and select
    Tags and parameters
    . The Tag Editor opens.
    TIP: To open
    Tags and parameters
    , you can also select the item in
    System
    and then in the
    System
    title bar, select FTDStudioTagsIcon
    View tags and parameters: (item name)
    .
  3. In last row of the Tag Editor, select
    Add Tag
    . A row for the new tag is added.
  4. Enter the parameters for the tag:
    • Name
      . The name of the tag or program parameter.
    • Data Type
      . The name of the data type. If the data type does not appear, browse to open the
      Select Data Type
       dialog box, select a data type from the list, and then select
      Apply
      . SeeSelect a data type for more information.
    • Value
      . Enter the value of the tag.
    • (Optional)
      Description
      . Enter a description of the tag to indicate the purpose of the tag or the latest change to the tag.
    • Scope
      . The scope of the tag is the item selected in
      System
      .
    • (Optional)
      Style
      . For a BOOL, SINT, INT, DINT, or REAL tag, select a display style to define how the tag value appears. Styles include DECIMAL, BINARY, OCTAL, and HEX.
    • Usage
      . Select a usage type -- LOCAL, INPUT, OUTPUT, INOUT, or PUBLIC. The default is LOCAL.
      TIP:
      • Usage is unavailable for tag members. PUBLIC is not a usage option for add-on instructions. Changes to Usage update the tag definition.
      • For the
        Usage
        column:
        • Only Input, Output, and Public parameters can be referenced by a parameter of another program.
        • Only a Local tag can be an alias tag for an Input, Output, or Public parameter of another program.
      • When copying and pasting an Input, Output, InOut, or Public parameter in the Tag Editor, it retains all properties of the tag.
      • The tag is not accessible externally when changing the usage of a tag to
        InOut Parameter
         and the External Access of the tag is Read/Write or Read Only
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