YV180X_Ope_E.pdf - 第155页
5 -79 EPD8013110 Operation Chapter 5 5 Creating the PCB data 6. Search Area It is recommended that this parameter be set to the mark diameter plus 3mm. For e xample, when the mark diameter is 1mm, set this parameter to “…
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EPD8013110
Operation
Chapter 5
5
Creating the PCB data
3. Surface Type
This specifies the bright and dark relation between the mark surface and
PCB (surrounding area). Select “NonReflect” when the mark is darker than
the surrounding area, and select “Reflect” when the mark is brighter than
the surrounding area, as shown below.
Surface Type settings
25513-C0-00
NonReflect
PCB is brighter than mark.
Reflect
Mark is brighter than PCB.
Parameter
setting
Displayed
image
PCB
Mark
PCB
Mark
4. Algorithm Type
There are 5 algorithm types selectable for mark recognition.
• Normal
In typical recognition, all types of marks should be set to “Normal”. Try
setting to other parameters if the mark cannot be recognized with the
“Normal” setting.
• Special 1
Select this if the mark cannot be recognized by the “Normal” setting.
• Special 2
Select this if the mark which cannot be recognized by the “Normal”
setting has a cutout area.
• PTRN Outline, PTRN GrayLev
Select these parameters when the Shape Type parameter is set to
“Pattern”. For more details, refer to “9. Pattern matching” in Chapter 6.
5. Tolerance
This specifies a tolerance percentage for the mark size when the mark is
recognized with the vision system. (Typically this should be set to “30”.)
For example, suppose as shown below that the tolerance is set to 30 (%)
with respect to point A representing the mark size setting, and points B and
C are the actually measured mark sizes. Point B is okay since it is recog-
nized within the allowable range, but point C is treated as an error since it
is outside the allowable range.
Tolerance
23530-C0-00
0
ABC
+100 (%)-100
A: Mark size setting
B, C: Vision recognition result
: Allowable range
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EPD8013110
Operation
Chapter 5
5
Creating the PCB data
6. Search Area
It is recommended that this parameter be set to the mark diameter plus
3mm. For example, when the mark diameter is 1mm, set this parameter to
“4mm” as shown below.
If other marks (such as resist, screen print, other patterns) exist in this
search area, make the Search Area setting smaller.
Search Area
23531-C0-00
1
4
Search Area
Mark
7. Sequence
This parameter appears only when the Option Edit parameter on the <3/1/
A1 OPTION CONFIG.> menu is set to “EXIST”. There are 3 choices:
“Normal”, “Quick” and “Fine”. Select “Quick” when the cycle time is
more important, but select “Fine” when accuracy is more important.
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EPD8013110
Operation
Chapter 5
5
Creating the PCB data
Mark Size Info. Parameters
8. Mark OutSize
Referring to the table below, enter the correct value in the MarkOutSize
column in the Mark Size Info. sub-window.
Mark OutSize settings
25514-C0-00
Example MarkOutSize settingShape type
Circle
Square
Triangle
Sp. Shape
Corner
TopEdge
CirEdge
Enter the diameter.
Enter the length of one side.
Enter the length of one side.
Enter the X length for the MarkOutSize X, and
the Y length for the MarkOutSize Y.
Enter the length of the shorter side displayed
within the search area.
Enter the length of the shortest side from among
the three sides displayed within the search area.
Enter the diameter of the round edge.
X
Y
Reference
If you use a special mark with two or more edges as shown below, enter the size of the
shortest side of the rectangular area you want to detect
Mark OutSize setting for special mark
23532-C0-00
Rectangular area
to be detected