Scrap Part Mode was added to the Rollforming controllers in SCN 2726.

This change adds Scrap Part Mode to the HVAC controllers, XL220OL and XL220CL.

The SCN 2726 fully describes the setup. In summary it allows the amount of scrap to be optimized (minimized) when starting from an empty part queue.

The Calculate Part code was not functioning correctly when calculating the leading end notch locations on the first part of an empty part queue. This resulted in a full notch being added to the leading edge and then the excess was cut off to create the correct notch size for the leading-edge connector.

This change corrects that issue. The leading-edge notch location(s) will be shifted so that no extra scrap or shear is required to finish the leading-edge notch for the leading-edge connector.

The targets reachable by the Maximum Backup Distance on Open Loop controllers were mistakenly shortened by the Tolerance setup parameter. This has been rectified.

On all controllers, the targets that will be reachable will now be extended by the Tolerance parameter.