Omron F250-UME Software Manual page 230

Circle Position Compensation
Changing to Other Modes (Clearing Settings)
2-9-(27)
Edge Pitch
The edge pitch setting is enabled only when black defect, white defect, or edge
are selected as the mode under Measurement conditions.
Set the pitch to obtain the density difference. (1 to 9 (1*))
Example:Mode: Black defect,
Edge pitch: 2
Compares the density with a point two pixels away.
Number of Circles
Select the number of circles for detecting the rotation positioning tag. (1 or 2
(1*)) The number of circles that can be drawn on the Model Registration
Screen will be limited to the number set here.
If the number is set to 2, the detection accuracy will increase but processing
will take longer.
The settings must be cleared before changing to another mode.
The settings method is the same as for Not Rotate. Refer to page 2-9-(8).
Section 2-9