Set up Class Relations

Explanation

This activity is used to define the class relations which determine the relations between classes. This in turn determines the relation and connection possibilities between a design object and another design object, a design object and a design part, and a design part and design part. Class relations need to be defined separately for Design Object and Design Part Classes.

An organized class relation scheme simplifies the plant registration process by limiting the number of relations that appear in a list of values and indirectly helps to ensure that only reasonable relations can be made. For example, when registering a transmitter, the only possible free functional parent relation to select from would be an instrument loop.                                     

Prerequisites

A design object or design part class.

System Effects

Steers the allowed relations between design object and/or design part classes.

Window

Class

Related Window Descriptions

Class
Class/Class Relations
Class Relations

Procedure

1. Open the Class window.
2. Search for the class for which you want to define class relations.
3. Click the Class Relations tab.
4. Click New (+).
5. In the Class Relation Description field, select the class relation description for the relation you want to define.
6. In the Sub Class field, enter the class that you want to relate to the class in the header using the selected class relation description.
7. Click Save. 

Alternatively perform steps 1-3 and:

1. Right click and click Define Class Relations. The Class Relations window opens.
2. Select the required class relation from the list.
3. Select the cell for the class relation against the relevant foreign classes.
4. Click Save.