Rockwell Automation 48MS MultiSight Vision Sensor - Manual (Page 45)

MultiSight™ User Manual
Start-up
10000000877(02) 45
Recommendations for selecting a pattern or contour:
For reliable evaluation
- The pattern/contour should have a unique characteristic—
some aspect that does not occur on a “bad” part.
- Patterns or pattern characteristics should have clear contours/
shapes.
- Pattern/contour characteristics should NOT vary.
- The pattern area should be set as large as possible within the
image. A pattern that fills 10% of the image will be more
reliably detected than a pattern that only fills 1% of the image.
If necessary, move the sensor closer to the target.
The pattern area (red frame) should be entirely within the yellow
frame (region of interest).
For higher resolution and speed, do not set the yellow frame
larger than necessary relative to the size of the pattern. The larger
the area that requires evaluation (namely, the ROI) relative to the
size of the pattern, the slower the evaluation time.
Pattern
Region of
Interest
Pattern
Region of
Interest
Sensor Image Sensor Image
More Consistent Detection Less Consistent Detection