Omron SYSMAC FH Series User Manual

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Measurement Mechanism
842
Vision System FH/FZ5 Series
User’s Manual (Z340)
Defect Detection Measurement
Color changes within the measurement region are used to find defects such as
scratches,contamination, and chipping.
After measurement region is drawn, a rectangle (defect detection region) is
automatically formed in this region. While moving the defect detection region
around, calculate average density for each area to determine the difference
between the original area and the surrounding area. This difference is called
the defect level. Calculate the defect level for all defect detection areas. If the maximum value exceeds the
judgement value, it is judged that there are defects in the measurement region.
Increasing "Defect size" allows for shortening of processing time, but this will reduce measurement accuracy.
Handling Coordinates
The processing items for measuring positions have a setting item called "Output parameter" with which you can
select how to handle coordinates.
In "Output parameter", you can set "Output coordinates" and "Calibration".
Output Coordinates
Selects coordinate types to be output to external devices.
Before position compensation
Coordinate values before position compensation are output.
Setting item Description
Upper
Lower
Specify the upper and lower limits of defect detection size based on the size of scratch or
contamination to be detected.
The larger the difference between upper and lower limits, the easier it is to detect the scratches
or contamination of various sizes.
For both upper and lower limits, higher values for defect detection size limits leads to weaker
detection sensitivity and shorter processing time.
Defect detection size
Defect
Sensitivity high low
Defect detection size
Defects
Processing time long short
Example)
This angle is used as
model for position
compensation
The area outside of
imaging range is turned
into black
Measurement image
(image without position
compensation)
Image with position
compensation
(for left upper deflection)
Image when setting
Reference position
++
Y
X
0

Omron SYSMAC FH Series Specifications

General

Brand	Omron
Model	SYSMAC FH Series
Category	Industrial Equipment
Language	English