Overriding I/O Points
- Last UpdatedJun 30, 2020
- 2 minute read
In the following procedure, we override the current value of the tank level with a false value and watch the control system respond.
-
On the main window, click the Tools menu and select Cross Reference Table, or click the appropriate icon (
) and click OK in the Cross Reference Filter.
-
Under the Analog tab, highlight the row containing the VTL2.OP command in the To Symbol.

-
In the XRef Editor window toolbar, click the Override button.

-
Set the Mature Value to 1.
-
Click the Activate button. The demand to VTL2 increases to correct the supposed error in tank level.
-
Click the Save button located next to Activate (we will use the saved malfunction in an upcoming section).
-
In the Select a System dialog box, select Tank Level Control and click OK.

-
Click the Deactivate button to discontinue override and close the Malfunction popup.