Overrides

The Overrides pane, which you can add to any Display, lists all the manually overridden values in the schedule, and lets you add, edit and delete overrides. Overrides can be added manually but are often taken from associated baselines.

The grid columns are described in the following table.

Add overrides

To add an override, use the option buttons to choose between a calculation or formula-defined override.

The options for formula-based overrides are summarized in the following table:

Calculation-based overrides can be defined using calculations that are in use elsewhere in Schedule, or you can define a new calculation. Once you have toggled a property onto a calculation override, a set of icons appears in its cell. Click the icons to add (), copy () or edit () a calculation. The drop-down menu to the left of these icons lets you search for, and add, existing calculations to the property you want to override.

If there is a diagnostic error (for example, the units of measurement are wrong), a warning icon appears in the Status column.

Add inventory composition overrides

To override the composition of the material stored in a tank, click the Add button, toward the top of the overrides pane, and select Inventory Composition:

This opens a dialog where you can:

1. Choose the Asset for which to define the override. The drop-down menu has a text box at the top, in which you can type to filter the list of assets.

2. Choose the date and time from which the override takes effect.

3. Choose the basis for measuring the component ratios, either Weight or Volume.

4. Use the , and buttons to add, edit and delete feedstocks to the list.

5. Click Add to add the override. You can then define and add another override, or click Close to exit the dialog window.

   

Add inventory or property overrides

To override the inventory of a tank or a property of its contents, click the Add button, toward the top of the overrides pane, and select Inventory or Property:

This opens a dialog box where you can:

6. Choose the Asset for which to define the override. The drop-down menu has a text box at the top, in which you can type to filter the list of assets.

7. Choose the date and time from which the override takes effect.

8. Choose the Property to override. Like in the Asset drop-down menu, there is a text box for quickly filtering the list. Choose Inventory if you want to override the amount of material in the tank.

9. Enter the new Formula for the property value and choose the unit of measure, or choose from an existing calculation within Schedule.

10. Click Add to add the override. You can then define and add another override, or click Close to exit the dialog window.

Add flow rate or property overrides

To override the flow rate of material between assets, or a property of the material flowing between assets, click the Add button, toward the top of the overrides pane, and select Flow Rate or Property:

This opens a dialog box where you can:

11. Choose the Source asset of the flow. Use the text box at the top of the drop-down menu to quickly filter the list of assets. Leave the <Any> option selected to override the flow of material from all source assets to a given destination asset.

12. Choose the Destination asset of the flow. Use the text box at the top of the drop-down menu to quickly filter the list of assets. Leave the <Any> option selected to override the flow of material to all destination assets from a given source asset. Note that you will not be able to add an override if you set both the Source and Destination options to <Any>.

13. Choose the Start date and time for the override. Clear the check box if you want the override to start from the beginning of the scheduling period.

14. Choose the End date and time for the override. Clear the check box if you want the override to last until the end of the scheduling period.

15. Choose the Property to override. Like in the Source and Destination drop-down menus, there is a text box for quickly filtering the list. Choose Flow Rate if you want to override the flow rate of material between the assets.

16. Enter the new Formula for the property value and choose the unit of measure, or choose from an existing calculation or time-based parameter within Schedule.

17. Click Add to add the override. You can then define and add another override, or click Close to exit the dialog window.

Add pipeline inventory overrides

To override the batches of material contained in a pipeline and their destinations, click the Add button, toward the top of the overrides pane, and select Pipeline Inventory:

This opens a dialog box where you can:

18. Choose the pipeline for which you want to define the override from the Asset list.

19. In the Time field, enter the date and time from which the override takes effect.

20. Click the button to add a batch to the pipeline. Choose the Feedstock type and the Amount, together with the unit of measure. Choose the batch number in the Batch column. Note that you can have multiple feedstocks in the same batch.

21. Add more feedstocks if needed. To delete a feedstock, select the corresponding row and click the button.

22. In the bottom pane, choose a Destination for each batch. If available, choose a route to the destination in the Via column. Optionally, choose a custom Name and Color for each batch.

23. Click Add to add the override. You can then define and add another override, or click Close to exit the dialog window.

Edit overrides

To edit an override, select it in the grid and click the Edit button in the toolbar at the top of the pane. Depending on the type of override, the appropriate dialog window opens.

Delete overrides

To delete one or more overrides:

24. Select the rows corresponding to the overrides you want to delete.

25. Click Delete in the toolbar at the top of the pane.

The selected overrides are deleted immediately, without further confirmation being asked.

Tip: You can also deactivate overrides for debugging purposes by clearing the Active check box. Override values are taken into account on the Tabular pane and in charts.