Owner's manual

5-32 Programming Basics and Setup
Figure 5-18 Model Finder Fiducial Window – Model Finder Tab
21. For the first fiducial, use the same dot used to define the workpiece origin.
22. Using the position controls, align the camera crosshairs with the center of the dot.
 Notice the tabs below the video display,
Image, Run Time and Model Finder.
23. Adjust the Model Size parameters if necessary. The Model Window should be as small as
possible, but larger than the fiducial feature.
 You may want to use one half of the dot or a quarter of the dot as the fiducial. If the
fiducial fills the entire Model Window, it is not a good fiducial.
24. Adjust the Search Window parameters if necessary. The Search Window is the area in
which the vision system will search for the fiducial.
 The default values for the Search Window parameters are equal to the dimensions of the
video display window.
25. Adjust the Accept Threshold if necessary. Accept Threshold is a minimum “score” that a
feature must meet or exceed to be considered a candidate for the desired fiducial.
 When the vision system finds a potential fiducial, it assigns a score to the feature based
on how well it matches the previously taught model.
 If the score of the potential fiducial does not meet or exceed the Accept Threshold, the
vision system will automatically disregard the feature and continue searching.
Recommended setting: 500-800.