A CLF with Multiple Presses on one die, Stitching Parts by omitting shears, Phantom shears, are all scenarious where a press gets disabled. It is prevented at a low level from firing.

A customer with an XL202CLF with two presses on one die reported that they had internittent issues with the Shear press not firing on a Manual Shear. After a deep code review, since we were not able to duplicate it, the following theory was formed.

Under some conditions, the run code is likely disabling the shear press. It enables or disables it when it processed each target. There are most likely conditions where the controller exitt the run mode with the press disabled. The Manual Shear Code is expecting the press to be enabled all the time.

The fix, in case this theory is correct is to enable the selected press during any Manual Shear or Press operation.