Hardware manual

Impact Reference Guide Point Match
3-137 Datalogic Automation Inc.
Ideal Points A point list generated from an ideal part that is used as a template for
comparison. The points can be in any order. See “How Point Matching
Works” on page 3-138.
Actual Points A point list taken from a test part that is used to determine whether the
part is defective. The point list is in no particular order relative to the ideal
point list.
Tolerance The maximum distance allowed between corresponding actual and ideal
points. Large tolerance values will cause highly ambiguous matching
and infinite tolerance values are considered an error.
Match Tolerance If this value is greater than the tolerance, it is used to match points, but it
does not determine whether the point match is In tolerance. If a point is
not in tolerance, but you want to know the distance to the "matched"
point, use this setting. That is, all points may be within match tolerance,
but the inspection is considered a failure if the points are less than the
tolerance. The Match Tolerance does not affect the match lists, or the
missing or extra points outputs.
Test Extra Points If True, any extra points found in the actual point list will cause In Toler-
ance to be False.
Enable XY-Offsets If True, the X and Y Offset between the actual point and the matching
actual point is used to determine point match tolerance. The In Tolerance
output is True if all the X and Y Offset values are less than the tolerance.
Enable Radial Off-
sets
If True, the Radial Offset between the actual point and the matching
actual point is used to determine point match tolerance. The In Tolerance
output is True if all the Radial Offset values are less than the tolerance.
Enable Tolerance
Regions
If True, the Tolerance Regions output is enabled.
Output Name What it is
In Tolerance If True, every ideal point has at least one unique matching actual point
within the given tolerance. If Test Extra Points is True, then any extra
points found will cause In tolerance to be False.
Ideal Point Match If a value in this list is True, the tool found an actual point within toler-
ance in the actual points list.
If the value is False, the matching point is missing or outside the toler-
ance.
Actual Point Match If a value in this list is True, the corresponding actual point found an
actual point within tolerance in the actual points list. If a value is false,
the corresponding actual point is listed in the extra points output list.
Extra Points The points in this list were found in the actual points, but had no corre-
sponding actual point within tolerance. Extra points can occur if the
actual point is out of tolerance or if multiple points are within tolerance.
For multiple points within tolerance, the first point is selected as match-
ing and the rest are considered extra.
Input Name What it is