Omron F250-UME, Руководство пользователя программного обеспечения

Страница: 161 / 999

2-6-(23)
EC Position Compensation Section 2-6
STEP 2: Setting Conditions for Obtaining Lines
The Controller detects 4 lines and searches for a box. Adjust the conditions for
detecting the lines so that desired lines are detected.
HELP
Line Angles
The positions where the brightness changes are extracted as edges and the
directions of the changes in brightness are found. These directions are called
the edge codes and they indicate the directions of the edges. The way in which
black and white meet determines the direction of an edge code, and the angle
is calculated as shown below.
CHECK
Set the angles as a combination of the four sides of the box to be found
(angles 0 to 3).
Example: The following examples are for black boxes.
End
:
:
:
:
:
: 3
OFF
[ 0]
[ 90]
[180]
[270]
Line conditions
Extract level
Specifying angle
Line angle 0
Line angle 1
Line angle 2
Line angle 3
Specify values if a lot of noise or
foreign matter results in boxes not
being detected with stability.
Specifying angle: Set to ON.
Line angle
@ : Set the angles of the
lines to detect.
The asterisk (*) indicates the default
setting.
Note: Angles cannot be specified when
positioning mark may rotate.
Setting item Selections
Specifying angle ON, OFF*
Line angle 0 0 to 359 (*0)
Line angle 1 0 to 359 (*90)
Line angle 2 0 to 359 (*180)
Line angle 3 0 to 359 (*270)
Refer to the information about cross points for details (page 2-6-(18)).
0
°
90
°
270
°
180
°
180
°
270
°
90
°
0
°
225
°
315
°
135
°
45
°