Omron V530-R2000 User Manual page 125

SECTION 9
Appendix
n Setting the Field of Vision and Working Distance
Use the following formula to calculate the field of vision and working distance.
(Code size: C) + 2 ´ (Cell size: S) < (Field of vision: A) < 121 ´ (Cell size: S)
Effective number of
Camera pixels
Code size
Symbol size
Cell size
Field of vision
Taking the positioning accuracy of the workpiece in account, set a suitable field of
vision.
Example: In this example, the code size is 3 mm and the symbol size is 12 ´ 12.
• Cell size: S = 3/12 = 0.25 mm
• Maximum field of vision: 0.25 ´ 121 = 30.25 mm
• Minimum field of vision: 3 + 0.25 ´ 2 = 3.5 mm
If the positioning accuracy is ± 5 mm, set the field of vision to from 13.5 mm to less
than 30.25 mm.
V530-R2000
108
User's Manual
512 (H) ´ 484 (V)
C (mm)
M X M
S (mm) = C/M
Four pixels are required per cell.
A margin of about the size of one
cell is required.
Max.: A (mm) = S/4 ´ 484
Min.: A (mm) = C + S ´ 1 ´ 2
S
C
A