Create an Object Instance

Before you begin

Create an object type.

About this task

For each item of an object type, you must create an object instance so that you can capture values of the variables in the instance. These values are then stored in Historian.
Note: After you create an object instance, you cannot rename, import, export, or delete a variable, contained types, or templates in the associated object type; you can only create new ones.

Procedure

  1. Access Configuration Hub.
  2. In the NAVIGATION section, under the Configuration Hub plugin for Historian, select Model. Alternatively, you can select Systems, and then in the row containing the system in which you want to create a model, select , and then select Browse Model.
    The Model section appears.
  3. In the SYSTEM list, select the system in which you want to create an object instance.
  4. Under Object Types, right-click the object type whose instance you want to create (or select ), and then select Add Object Instance.
    The New Object Instance window appears.
  5. Enter values as described in the following table.
    t_copy_object_type.html 47.3 KiB 9/11/2023 3:27:25 PM
    Field Description
    NAME Enter a name for the object instance. A value is required and must be unique for the object type.
    The value that you enter:
    • Must begin with a letter or a number.
    • Can contain up to 256 characters.
    • Can include any of the following special characters: /!|#{}%$-_
    • Must not include a space or any of the following characters: ~`+^:;.,?"*=@
    DESCRIPTION Enter a description for the object instance.
    OBJECT TYPE This field is disabled and populated with the object type that you have selected.
    OBJECT TYPE TEMPLATE Select the template that you want to apply to the object instance.
    Note: After you apply a template to an object instance, you cannot modify or delete a variable in the object type; you can only add more variables.
  6. Select Create.
    The object instance is created.
  7. In the Model section, under Instances, expand the instance that you have created, and then expand Variables.
    A list of variables inherited from the template in the object type appear.
  8. Select a variable.
    The details of the variable appear in the DETAILS section.
    Tip: If the DETAILS section does not appear, in the upper-right corner of the page, select , and then select DETAILS.

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