Hardware manual

Impact Reference Guide Grid Statistics
3-221 Datalogic Automation Inc.
Create Pitch Seg-
ments
If True, the X pitches and Y pitches between the Ideal points and corre-
sponding Actual points are created as output Line Segment lists. A sepa-
rate output Line Segment list is provided for the X Pitches and the Y
Pitches.
Enable XY Offset If True, the X Offsets and Y Offsets between the Ideal points and corre-
sponding Actual points are used to check the position of the Actual
Points, and the measured X Offset and Y Offset values are created as
output real lists.
Maximum X Offset The Maximum +/- X axis error allowed for an Actual point relative to the
corresponding Ideal point. This measurement is independent of all other
measurements.
Maximum Y Offset The Maximum +/- Y-axis error allowed for an Actual point relative to the
corresponding Ideal point. This measurement is independent of all other
measurements.
Enable Radial Off-
set
If True, the Radial Offsets between the Ideal points and corresponding
Actual points are checked with the Maximum Radial Offset input as the
tolerance and the results created as an output real list.
Maximum Radial
Offset
The maximum Euclidean distance to allow between corresponding
points.
Large Radial offset values will cause highly ambiguous matching and
infinite tolerance values are considered an error.
Maximum Grid
Radial Offset
The maximum Euclidean distance allowed to offset the entire Ideal Grid
relative to the Actual Points to minimize errors and optimize the X Offset
and Y Offsets to a mean of zero.
Extra Point Test If True, the extra points in the actual point list will cause the In Tolerance
output to be False.
Output Name What it is
In Tolerance If True, all of the actual points have exactly one corresponding ideal
point that is within the given tolerance and no more points. If the Extra
Points Test is True, then extra points will not cause the fit to be outside
the tolerance. (i.e. a one to many mapping is allowed)
Results If a value in this list is true, the corresponding ideal point has a point
within tolerance in the actual point list. If the value is false, the matching
point is either out of tolerance or missing. Missing points will report all
measurement values as zero (X Offset, Y Offset, Radial Offset, X Pitch,
Y Pitch).
X Pitches The Actual X Pitch distances between consecutive points or Columns
using the Actual Point list data. The last point in a row or column in the
grid will have a pitch value calculated to the previous column or point in
the row.
Input Name What it is