HEIDENHAIN IK 5494-2D - Manual (Page 137)

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4
Probes
probe movement away from the current position will guarantee an ideal probe position for measurement.
Probe movement prior to measurement is prevented by expanding the measure circle superstep, changing
the move type from absolute to relative and entering zeros for relative move coordinates.
When the program is executed, the hole will be found by the Pattern probe, centered in the field of view
and measured. The influence of part variations will have been eliminated by finding and centering the part
and by forcing a measurement over the selected feature location.
Expand the measure circle superstep...
double-click the Wait for point step to display the dialog box...
enter zero target position coordinates and set the Relative mode
Video Probe Descriptions