Omron F250-UME, Руководство пользователя программного обеспечения

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2-16-(19)
EC Positioning Section 2-16
STEP 2: Setting Conditions for Obtaining Lines
Adjust the line conditions if the lines cannot be found easily or to extract only
lines of a particular angle.
HELP
Line Angles
The position where the brightness changes is extracted as an edge and the
direction of the change in brightness is found. This direction is called the edge
code and it indicates the direction of the edge. The way in which black and
white meet determines the direction of the edge code, and the angle is calcu-
lated as shown below.
End
Line conditions
Extract level
Line angle 0
Line angle 1
Line angle 2
Line angle 3
:
:
:
:
:
:
:
: 3
OFF
[ 0]
OFF
[ 90]
OFF
[180]
OFF
To extract lines regardless of the angle:
Line angle
@ : Set to OFF.
(Ignore the setting in square brackets on the second line.)
To extract only lines at specific angles:
Up to four angles can be specified.
Line angle
@
: Set to ON.
Set the angle for the lines to be detected in the square
brackets on the second line.
Setting item Selections
Line angle 0 ON, OFF*
0 to 359 (*0)
LIne angle 1 ON, OFF*
0 to 359 (*90)
LIne angle 2 ON, OFF*
0 to 359 (*180)
LIne angle 3 ON, OFF*
0 to 359 (*270)
The asterisk (*) indicates the default setting.
The level for extracting lines can be changed. There are 5 levels (1 to 5) and the default
setting is 3. Refer to the following examples and adjust the level as required.
To make a broken line into a single line To extract as separate lines
Change the extraction
level to a larger value. Change the extraction
level to a smaller value.
Change the extraction
level to a smaller value. Change the extraction
level to a larger value.
To ignore noise
When the measurement object is small
and cannot be detected easily
SeeAlso Refer to Line Angles on page 2-15-(1).