If a press punches too close together it can damage press tooling and it is inefficient time wise. Sometimes customers program patterns with overlapping punches that span the trailing edge of one part and the leading edge of the next part so that the first and last parts will both get all of their holes. We detect the redundant press hits in the middle and remove the duplicates. Press hits, with gags are OR'd together to become one press hit with the gags of both operations.

SCN 2585 changed the threshold of +- one encoder count to be equal to the part tolerance. However, this can result in holes that can be as much as two times the tolerance out of spec. In addition, the change was made for one customer for a problem we were unable to duplicate.

We have added a new setup called "Punch Combination Tolerance". This provides independent control over how close targets can be before they are OR'd together.

For now it will be available on controllers that are configured with Gags. When unavailable the tolerance will be the equivalent distance of 1 encoder count, which reverts it back to the original tolerance prior to SCN 2585.

A setup was created in a theorized attempt to improve tolerance. After a move, rather than test to see if other presses are within tolerance, this new setup would allow each press to do its own move.

The Setup is called Punch Tolerance mode and has two settings, Individual and Parallel. The intent is that Independent will force each press to do its own move to get as close to its target as possible. Parallel is the legacy operation where a press will test to see if it is within tolerance and will not attempt to move.

When beginning to implement the actual run logic of the setup it became apparent that it was a larger job than it sounds like on the surface. It will require a lot of changes and an approach similar to the one 5226 motion controller uses where a 75% threshold within the tolerance is used to decide if the press needs to attempt its own move. It is a little more complicated because not all lines are able to back up like the folding machine axes the 5226 deals with.

For now, until/if we decide to revisit this, the setup will be hidden and will have no effect.

The Hole Correction Feature adjusts Shear Targets based on the detection of a hole within a tolerance range of the expected shear location.

This feature worked for the most part but in Feed to Stop configurations there are certain parts that have been discovered to cause Missed Shear or Missed Press Target Errors.

On a feed to stop controller, the controller moves to the target that is closest. The software was correctly adjusting the shear target but it did not account for the fact that the shear target may now be closer or another press target may now be closer. If the adjustment was far enough the controller would later detect and out of tolerance or missed target condition and report an error.

The Hole Correction feature was added for Feed to Stop to the Models listed below. Some of these controllers do not have a Feed to Stop shear but they already support Hole Correction in Flying Cut so they are still listed here.

XL200CL XL202CL XL206CL XL212CL XL244CL XL200MDA2 XL200SPD

This parameter was added to the Closed Loop in SCN 4337 and was not added, due to an oversite, to the Open Loop.