On a Feed to Stop Controller, the Tolerance setup controls when the press turns ON. The press will not be turned ON unless the material is within Tolerance.

On a Continuous press contoller, when the press is already ON, there is nothing the controller can do to improve tolerance. The way the tolerence test was implemented, the number that was being captured would improve when using a smaller Tolerance setting. This was missleading.

When the press is already ON, the tolerance will now be captured when the Feed Angle input transitions from ON to OFF. Assuming this Feed Angle input transition is properly adjusted in the press controller, this is the point (or close to it) where the press hits the material and is a true reflection of the positioning tolerance.