YV180X_Ope_E.pdf - 第294页

6 -59 EPD8013110 Operation Chapter 6 6 Using various functions 3 Set the parameters in the sub-window . Press the [T AB] key to move the cursor to the sub-window (right window) and set the following parameters. The displ…

-58

EPD8013110

Operation

Chapter 6

Using various functions

9.1 Pattern registration

To utilize pattern matching, you must register the reference pattern in the

template.

1 Decide on the pattern.

Decide which pattern you want to use for pattern matching. Select a pair

of patterns that meet the following conditions.

• Each pattern clearly contrasts with the PCB. (It is okay if the outline of

each pattern is definite.)

• A pair of patterns are diagonally opposing on the PCB. (The same point

cannot be used.)

• Each pattern should have the same shape and face the same direction.

Pattern conditions

23622-C0-00

Pattern

NG OK

2 Register the pattern data in the mark information.

1. In the <2/1/EDIT_DATA> mode, select “Mark Info.” from the edit object

list and press the [ENTER] key.

(When you are editing other information, pressing the [F3] key displays

the edit item list.)

2. Move the cursor to the No. for registering the data and enter a name in

the “MARK NAME” column to allow identification of this pattern.

Mark Info. screen

27636-C0-00

PCB :

No.

MARK NAME COMMENT

Mark Type Info.

Edit Term :

OBJ :Mark Info.

<<<APPLICATION>>>

<<MODE>>1/EDIT_DATA

2/DATA/M

Mark Type

Database Number

Enter the mark name to be recognized as a pattern.

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EPD8013110

Operation

Chapter 6

Using various functions

3 Set the parameters in the sub-window.

Press the [TAB] key to move the cursor to the sub-window (right window)

and set the following parameters. The display of sub-window can be

switched by pressing the [F4] key.

1. Open the Mark Type Info. sub-window and set the “Mark Type”

parameter to “Fiducial”.

2. Open the Vision Info. sub-window and set the “Algorithm Type”

parameter to “PTRN Outline” or “PTRN GrayLev”.

PTRN Outline : In most cases, select this parameter for pattern

matching. When the outline is definite, the

pattern can be recognized even if uneven

brightness portions are present inside the

pattern.

PTRN GrayLev : Selecting this parameter is more effective in

recognizing a pattern whose brightness is

uniform inside the pattern. This parameter

setting requires a longer time to recognize a

pattern than in the “PTRN Outline” setting and

also the data size will be larger.

Vision Info. sub-window

27637-C0-00

PATRN Outline

PCB:

Vision Info.

Edit Term

Algorithm Type

OBJ : Mark Info.

MARK NAMENo.

COMMENT

<<<APPLICATION>>> 2/DATA/M

<<MODE>> 1/EDIT_DATA

Set this parameter to "PTRN Outline" or "PTRN GreyLev".

Pattern recognition types

23623-C0-00

PTRN Outline

(Uneven bri

tness)

PTRN Graylev

(Uniform bri

htness

)

Reference

The “Algorithm Type” parameter does not appear in the Vision Info. sub-window if the

“Mark Type” parameter in the Mark Type Info. sub-window has not been set to “Fidu-

cial”.

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EPD8013110

Operation

Chapter 6

Using various functions

4 Execute the Adjust Assistant.

Press the [F6] to open the Adjust Assistant screen. Adjust the image

processing parameters with the procedure below in order to obtain a clear

image of the target pattern.

Example of pattern image taken with the Adjust Assistant command

27638-C0-00

FIX PCB

TEACH MARK

VISION TEST

PARAM. SEARCH

SAVE PATTERN

DISP. PATTERN

CHK THRESHOLD

EXIT

Mark Threshold

Tolerance

Search Area

Pattern Number

Pattern Size X

Pattern Size Y

Offset X

Offset Y

(%)

(mm)

129

3.00

1.77

4.71

Mark Name : patern

Adjust Assist ItemsCommand

1. Using the FIX PCB command, clamp the PCB you want to use for

pattern matching on the conveyor of the mounter. (For details refer to

“4.3 Executing the Adjust Assistant” in Chapter 5.)

2. Execute the TEACH MARK command and operate the joystick so that

the pattern is displayed in the center of the vision monitor.

5 Execute the SAVE PATTERN command.

The following screen appears on the vision monitor when the SAVE

PATTERN command is executed.

Pattern registration screen

23624-C0-00

X.Y : 220.205

Size : 71.101

Off : 35.50

Pattern

Windo

6 Decide on the pattern size.

Following the message “Please teach template size and position. (Step 1)”

displayed on the operation monitor, enclose the pattern with a square

window by using the [TAB] key and arrow keys. Adjust and determine the

window size and position as explained below, then press the [ENTER] key.

The area enclosed with the window is registered as a template.

[TAB] key

Each time you press the [TAB] key, the start point (stationary point) of

the window changes to “lower right corner” → “upper left corner” →

“center”. Select the starting point with which you can enclose the

pattern easily.

Lower right corner start (stationary) point:

The window can be enlarged or reduced with the arrow keys, using

the lower right corner of the window as a start point. However, the

window cannot be expanded further right or downwards of the start

point.