Administrator’s Guide(CP45FV) Eng.pdf - 第74页
Samsung Component Placer CP45FV Series Administrator ’ s Guide Rectangle2: Overlapping of 2 rectangular fiducial marks. Triangle: Triangular shape fiducial mark. Cross: Cross shape fiducial mark. Butterfly: Butterfly sha…
Board Definition
6-13
Memo
On Fiducial Marks
A fiducial mark has to satisfy several shape and material conditions. During the design of
PCB, the following precautions should be taken.
Seven patterns of fiducial mark shapes are possible as shown in the figure below
(top/bottom symmetry or right/left symmetry)
For the size of A, over 2.0 ㎜ is recommended. The width of mark sensor beam is
about ø0.7 ㎜ measured from the surface of PCB.
Make sure that any changes in color or shape(solder resist, lead pattern) that can
cause error should not be found within 2.0 ㎜ of fiducial mark's outer edges.
Make sure that the shading difference exits between the fiducial mark and the board
surrounding it.
To ensure search accuracy, coat the surface of the fiducial mark with copper or lead
so that the surface does not reflect. The line shaped fiducial marks can not be
searched with Beam.
A
A
<5. Mark List> group
A list of fiducial mark shape data.
<No> column
A serial number of fiducial mark shape.
<Name> column
The name of the fiducial mark(Up to 10 characters)
<Shape> column
Select the shape of fiducial mark. Available shapes are as follows.
Circle: Circular shape fiducial mark.
Diamond: Diamond shape fiducial mark.
Rectangle: Rectangular shape fiducial mark.
Samsung Component Placer CP45FV Series Administrator’s Guide
Rectangle2: Overlapping of 2 rectangular fiducial marks.
Triangle: Triangular shape fiducial mark.
Cross: Cross shape fiducial mark.
Butterfly: Butterfly shape fiducial Mark.
Sharp: Sharp(#) shape fiducial mark.
<Camera> column
Select a camera to inspect the fiducial mark. At present, it is fixed to “Move
Camera”.
<6. Form Data> group
Data on the shapes of fiducial marks.
<Size X> edit box
Set the size of fiducial mark in X direction.(Based on the machine coordinate
system)
<Size Y> edit box
Set the size of fiducial mark in Y direction.(Based on the machine coordinate
system)
<Arm> edit box
Set the width of the bar of cross shape fiducial marks.
<Polarity> combo box
Select the color of fiducial mark. Available colors are as follows.
White: the mark looks lighter than the surroundings.
Black: the mark looks darker than the surroundings.
<Thickness> edit box
Set the thickness of the fiducial mark.
The value of 0 denotes a full fiducial mark.
0 A value other than 0 denotes that value for the thickness of the exterior line.
<Rotation> combo box
Select the rotation angle of fiducial mark. In the case of triangles, the
registered form has the corner facing upward, but there are occasions where
the corner is actually facing sideways. In those cases, select the rotation
angle.
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Board Definition
6-15
Available rotation angles are as follows.
0: the angle of the mark is 0.
90: the mark is rotated to 90°.
180: the mark is rotated to 180°.
270: the mark is rotated to 270°.
<7. Search Area> group
Set the area in which to search the fiducial mark. The main purpose of this
feature is to limit the search range for when there are forms similar to the mark
near the mark such that they can interfere with recognition on certain PCBs.
<X> edit box
Set the position to start searching for the fiducial mark in X axis. The center
of the vision monitor screen is 0. In general, it is -3 mm.
<Y> edit box
Set the position to start searching for the fiducial mark in Y axis. The center
of the vision monitor is 0. In general, it is -3 mm.
<Width X> edit box
Set the value of search range in X axis. In general, it is 6 mm.
<Width Y> edit box
Set the value of search range in Y axis. In general, it is 6 mm.
<8. Parameter> group
<Score> edit box
The accuracy with which the fiducial mark matches the given data expressed
in number is “score”. The score ranges from 0 to 100. The value set in
<Score> denotes the minimum “score” to be accepted. In general, it should be
at least 600(default value) for accurate adjustment. Even in the worst case, it
should be over 300.
<Light> group
Set the light value when the fiducial mark is inspected. In general, 7 is
appropriate but it can be adjusted according to the condition of PCB and
fiducial mark.
<Tuning> button
By using the registered mark information, finds the exact size of the mark. After
the size of the actual mark is found, the following message box is displayed. If
you want to update it with the data found, click on the<Yes> button, otherwise
click on the <No> button.