VI User Manual - 第235页
Tools library Vision 2007 4.10 User Manua l Rev 01 7 - 73 7.12 Data Matrix 7.12.1 Description Data Matrix are 2D codes used for board identi fication. With the AOI system, there are difer- ent way to read Data matrix acc…
Tools library
7 - 72 Vision 2007 4.10 User Manual Rev 01
7.11.7.2 Component’s leads detection
When you increase the lead num-
ber (
A), the corresponding sub
zone is automatically displayed on
the camera display.
Press
Test all pins of this area
(B) button to test all the leads of
the sub zone displayed.
Result of the one lead test Result of all area’s
leads
7.11.8 Custom tool execution
7.11.8.1 Execution of one reference
Ctrl + E is the only way to debug your model on a real picture,
It takes pictures of each sub zones with the 5 light levels to ensure the changes,
It runs all the links and takes the number of pictures required.
7.11.8.2 Global execution
All the required pictures are taken for each link.
Some of the leads dis-
played on this picture
may be tested on the
following sub zone. That
is why you can not see
their test results.
Multizones are very time consuming.
A
B
Multizones
Tools library
Vision 2007 4.10 User Manual Rev 01 7 - 73
7.12 Data Matrix
7.12.1 Description
Data Matrix are 2D codes used for board identification. With the AOI system, there are difer-
ent way to read Data matrix according to the application:
Using the internal camera,
Using an external camera,
Using an external 2D scanner (no library model is needed).
7.12.2 Data Matrix using the internal camera
7.12.2.1 Data Matrix creation
Load the .tst file in which you need to create Data Matrix. Load a board with the Data
Matrix in the machine. With the .tst file active, go in
Edit menu, and in Board sub
menu, select
Create Data Matrix. This starts the Data Matrix creation Wizard.
Edition of Data Matrix area
1. Click in the CAD representation to move the camera to the Data Matrix location on
the panel.
2. Press the Edit area button and adjust the area around the Data Matrix in the cam-
era real image.
3. Enter the CAD angle of the Data Matrix in the Theta field.
4. Press Next.
Description of the new Data Matrix
1.
Enter the reference designator of the Data Matrix and the name of the library model.
2. If the board number is not the right one, select the board number (or Panel) from
the drop down list.
3. To propagate the Data Matrix to all the boards, tick the check box.
4. Press Next.
Image capture for the library
1. Adjust the lights to obtain a good contrast.
2. Press Image capture for the library button and save
the Data Matrix image.
3. Press Finish.
4. The Data Matrix appears in the CAD representation.
Repeat this operation until you see the Data Matrix code on the camera pic-
ture.
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7.12.2.2 Data Matrix CAD edition
When you click on a Data Matrix
in the CAD representation, the
Data Matrix edition window ap-
pears.
In
Identification (A) section, ap-
pear the reference designator,
board number, and library mod-
el. The root is the 1st characters
that should be decoded by the
Data Matrix tool.
In
CAD position (B) section,
position and angle of the Data
Matrix are displayed.
In
Lighting (C) section, use the
cursors to adjust the ligthing.
Tick
Test (D) conditions.
Tick
Propagate lighting (E) to
propagate the lighting for all
Data Matrix.
7.12.2.3 Data Matrix execution
Click on the Execute internal data matrix icon in the Execution tools bar. When
the Data Matrix pass, the decoded string is displayed in the console.
7.12.3 Data Matrix using an external camera
The external Data Matrix inspection uses an external camera that is able to take picture dur-
ing the board loading. This camera, Sony XC_55, supply images to the Cognex Data Matrix
tool, which read the code before board stopping.
This option does not take time but you can only read one Data Matrix per panel.
7.12.3.1 Hardware description
A
Sony XC_55 camera,
B 50 mm lens,
C Fastening screw,
D White lighting.
You can adjust the focus with focus ring
and the picture brightness with the dia-
phragm.
A
B
C
D
E
A
B
C
D
Data Matrix