KE2010.Instruction Manual.Ver.2.01,Rev.08 - 第149页

4 – 42 4.5.2 Dimension set up W hen y ou click t he <Dimensions> butt on on the Basic setting window , the system switches a wi ndow to the "Dim ensions" window . The set tings of the it ems"Cir cuit…

100%1 / 1361
4 – 41
(6) Scale type
1) Gray scale (Multi-level) recognition
Obtain the level distribution of the brightness of the marks in depth and width.
Then, calculate shape of the marks and positions of the centers. Because
mark recognition is performed using the data obtained from multiple marks,
precise recognition is possible. Normally, select this item.
2) Binary scale (Bi-level) recognition
Obtain the edges of the marks, and calculate shape of the marks and
positions of the centers. Select this item only for the marks those where
multi-level recognition is impossible.
4 – 42
4.5.2 Dimension set up
When you click the <Dimensions> button on the Basic setting window, the system
switches a window to the "Dimensions" window. The settings of the items"Circuit"
and "BOC mk pos" vary depending on the "PWB configuration" setting on the Basic
setting window: Single PWB, Matrix circuit or Non-matrix circuit.
4.5.2.1 Single pattern
When you select “Single PWB” as the PWB configuration and click the <Dimension>
button, a screen shown below appears.
Button Description
Change Displays the Basic setup change screen.
Before entering each dimension on the "Dimensions" column, be sure to set the
origin of each dimension. Since Placement data is created based on this origin, we
recommend that you specify the origin used in CAD data if you are to create
Placement data from CAD data.
① PWB dimensions
Enter the outer dimensions of a
PWB.
X indicates the same direction as
the board transport direction, while
Y indicates the direction
perpendicular to the board
transport direction.
X = 330.00 Y = 250.00
250
330
(320, 0)
(325, -5)
10
10
BOC mark
PWB reference
position (origin)
Reference pin
PWB layout
end point
4 – 43
② Ref. hole pos. (Reference hole position)
Enter the coordinates of the positioning hole viewed from the PWB reference
position.
Note that the PWB reference position is assumed to be the origin (0, 0).
Note that the reference hole position varies according to the board transport
direction or reference side: front or rear (see Figure 4.5.2.1). When you
select "Shape Reference" at the item "Positioning method" on the Basic setting
window, you do not have to enter any data here.
X = 320.00, Y = 0.00
(1) Front reference
PWB transport direction:
left to right
(2) Front reference
PWB transport direction:
right to left
(3) Rear reference
PWB transport direction:
left to right
(4) Rear reference
PWB transport direction:
right to left
Figure 4.5.2.1 Positioning hole position and PWB layout offset
③ PWB layout offset
Enter the coordinates of the PWB layout end point (that is, shape reference
position) viewed from the PWB reference position.
Note that the PWB layout end point varies depending on the transport direction
and transport reference side.
X = 325.00 Y = -5.00
PWB transport
direction
PWB
PWB reference
position (origin)
Stopper pin
Positioning hole pin
PWB layout end point
PWB
PWB
PWB reference
position (origin)
PWB transport
direction
Stopper pin
Positioning hole pin
PWB layout end poin
t
Stopper pin
PWB layout end point
Positioning hole pin
PWB transport
direction
PWB transport
direction
Stopper pin
Positioning hole pin
PWB layout end poin
t
PWB reference
position (origin)
PWB
PWB reference
position (origin)