Dek-265GSX-User-Manual.pdf.pdf - 第93页

1. Select Mode (F1) till Step is indicated in the mode option on the screen. Mode 2. Select Exit (F8). Exit 3. Place the board on to the conveyor. 4. Select Run (F1). Run 5. Select Auto Board (F1). Auto Board 6. Select S…

Target Level Higher individuality of an image within the Video Model Box decreases the

search time by limiting the number of possible targets:

Herethereis little confusion as to which images are located and withahighscore

in this instance the Target Score could be set as low as 800 (Accept Score is set

less than or equal to Target Score).

Here the confusion is greater, which is likely to cause several best fits to be

above the Accept Score, eg 970, 780 and 630. This would require the Target

Score to be set around 830. Setting a higher Target Score increases the search

time but ensures the correct fiducial is chosen.

Preparing the Vision System

The vision system learns the fiducial during a board setup. The fiducial

co-ordinates are entered into the product file during the editing of a default file.

This enables the camera to find the fiducials initially. The setup needs to be run

in step mode from the status page.

The following procedure is typical for all fiducial shapes, although in this

instance a circle fiducial shape is referred to throughout.

1.76 User Manual Software Version 6

MACHINE PROGRAMMING

STAGE 7

Video Model

The procedure for creating a video model is very similar to that for a

fiducial, throughout this following fiducial procedure, boxes like this

contain alternative procedure steps, to allow the setup of a video model.

Select Mode (F1) till Step is indicated in the mode option on the screen.

Mode

Select Exit (F8).

Exit

3. Place the board on to the conveyor.

Select Run (F1).

Run

Select Auto Board (F1).

Auto

Board

Select Step (F1).

Step

Select Step (F1).

Software Version 6 User Manual 1.77

MACHINE PROGRAMMING

STAGE 7

The board fiducial/select mark should be visible on the monochrome monitor.

If selective print/pass through is enabled, the image on the left hand side of the

monitor is the board select mark. The right hand side of the monitor shows the

corresponding position on the screen, which is a mirror image of the board

without the select mark. While theselectmark is being setup andthemenu bar is

as Step 8, the message ‘The form of this fiducial will select Print / Pass

through.’ is displayed.

If the fiducial isin the field ofviewgo to Step 10. Ifthe fiducial is notin the field

of view, continue with Step 8.

Select Search Step (F5).

Step

For each press of Search Step the camera conducts an increasing spiral search to

enable the operator to locate the fiducial. If this search is not sucessful the

camera can be returned to its origin. Recheck the fiducial co-ordinates set in the

product file.

Select Search Reset (F6).

Reset

When the fiducial is located move it to the centre of the screen.

Select Adjust (F4).

Adjust

1.78 User Manual Software Version 6

MACHINE PROGRAMMING

STAGE 7