Add a Control Link

A control link is a visual link that indicates a relationship between a controller and an associated controller element.

A control link can be drawn in any direction. It becomes visible when either of the objects to which it is connected is selected by the user.

To create a content page for a Situational Awareness project:

1. In Graphics Builder, open the required page.

2. Use an ellipse object to draw a line on the page that links the two related items.

   To create the required line:

   • Go to the Appearance | General tab and select Arc as the ellipse object type. Use the Start Angle and End Angle settings to specify the end points for the line.

   • Set the line Color (pink is recommended).

   • Set the Style to Dot.

3. Go to the Appearance | Visibility tab.

4. In the Hidden when field, use the Cicode function to control the appearance of the control link.

   For example, to configure the control link in the image above, you would use the following:

   NavigationLink_IsHidden("MyPlant.FullMilk.TNK01", "MyPlant.FullMilk.PMP01", TRUE)

5. Click OK and save your changes.

It is recommended that you also add an arrow head to the line to indicate which piece of equipment has control. Use a filled polygon for the arrow head and create an object group. You can then perform steps 3 and 4 using the Group Properties dialog.

See Also

Key Components of a Situational Awareness Project