Omron FQ2-S/CH Series

Inspecting with the Edge Position Inspection Item
276
FQ2-S/CH User’s Manual
Unstable Edge Position Results
There Is an Edge But It Cannot Be Detected
[Inspect] − [Inspection] − [Edge Position] − [Modify] − [Details] Tab Page − [Meas. Parameter] −
[Edge Level]
Parameter Setting Description
Edge level
Color diff. / density diff. (%)
Range: 0 to 100
Default: 50
When specified by absolute value
• Color
Range: 0 to 442
Default: 20
• Monochrome
Range: 0 to 255
Default: 20
Set the color change level to detect as an edge.
The edge point is found based on a threshold that is set for a
color change.
If you change the edge level, perform teaching again.
Edge Level
• When measuring by relative value (%) of color difference width
An edge is detected in the following way.
1. The color change distribution of the entire measurement region is determined.
2. The minimum color change is 0%. The maximum color change is 100%.
3. The location where the color change intersects with the edge level is detected as the edge.
• When measuring by color difference value
The edge threshold is set using the absolute value of the color difference.
Important
Note
100%
50%
0%
Minimum color change
Edge level
Measurement
region
Maximum color change
Measurement region
Noise
Edge threshold (absolute value)
50
0