Change the tracking for global parameters and variables

A global parameter or variable is a parameter or variable that has the same value for all model instances on the Canvas. For example, if you define the ambient temperature, Tamb, as a global parameter, you can update its value for one model instance and AVEVA Process Simulation applies that change to all model instances on the Canvas that contain the Tamb parameter.

Only Model Editors can define a parameter or variable as a global parameter or variable. However, Simulation Builders can turn on or turn off the tracking for a global parameter or variable for any model instance on the Canvas. For example, if you define the pipe size as a global variable, you can choose whether a Pipe on the Canvas tracks and uses the value of this global pipe size or maintains its own value for the pipe size separate from the global pipe size.

On the Mini Inspector and the Properties Inspector, the Global badge appears next to global parameters and variables. The color of this badge indicates the tracking status of the global parameter or variable for the associated model instance. If the badge is colored, the model instance tracks and uses the global value. If the badge is blank, the model instance maintains its own value separate from the global value.

You can turn on or turn off the tracking for a global parameter or variable only by using the Properties Inspector.

Change the tracking for a global parameter

1. Open the Properties Inspector for the model instance that contains the global parameter.

2. Expand the Parameters section.

3. Press and hold Shift and then select the Global badge for the global parameter.

   The Global badge changes to indicate the new tracking status for the global parameter.

Change the tracking for a global variable

4. Open the Properties Inspector for the model instance that contains the global variable.

5. Expand the Variables section.

6. Press and hold Shift and then select the Global badge for the global variable.

   The Global badge changes to indicate the new tracking status for the global variable.