YSI_Prog_E.pdf - 第86页

2-15 2 Creating inspection pr ograms 2.4 Fiducial function Based on the recognized position results of fiducial marks allocated to boards, the fiducial function corrects errors that ma y occur from errors in machining th…

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Creating inspection programs

Item Description

4 Inspect

Condition

Auto Lib Deploy at Data

Load

If "Use" is selected, libraries are automatically deployed when the

inspection program is loaded.

Skip Inspection of No

Parts

If "Use" is selected, when the result of the parts check or electrode

check when performing automatic inspection is NG, inspection of

identical parts is skipped, and the next part is inspected.

Inspect Only First Parts

"Inspect Only First Parts" or "?Inspect for Each Specified Qty" can be

selected when the inspection status is "Character recognition" or

"Polarity check". Inspection is not performed for other than the specified

board. Setting is required in the "Option" tab for each step.

Number of Cycle

Inspection

This is valid if "Inspect Only First Parts" is set for "?Each Specified

Qty?". Enter the cycle quantity for boards to be inspected.

5 Operating

Condition

Pass Mode Boards are transferred without performing inspection.

Table Speed

This should normally be set to "Fast".

However, set to "Slow" for heavy boards.

Conveyor Tiner (sec)

Sets the length of time that the conveyor is rotated after the board

unloading sensor confirms that the board has been unloaded.

6 X-Ray

X-Ray Mode

Selects whether to set the X-ray inspection settings in "Board Unit" or

"View Unit".

If "Board Unit" is selected, select the "View zoom".

View zoom

This is valid if "Board Unit" is selected for "X-Ray Mode".

Select a suitable magnification for inspection from the drop-down list.

Max Parts Height (mm)

Enter the maximum height of parts mounted on the board subject to

inspection.

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Creating inspection programs

2.4 Fiducial function

Based on the recognized position results of fiducial marks allocated to boards, the fiducial function corrects

errors that may occur from errors in machining the board outline or from the board clamping mechanism, as

well as board warp. This function is used to correct the position of the entire board by registering fiducial

marks in the lower left (or upper left) of the board as Mark 1, and marks in the upper right (or lower right) as

Mark 2. (Up to three marks can be registered.) If required, register block fiducials or local fiducials after

registering board fiducial marks.

Board fiducial mark example

Board

Mark 2

Mark 1

Mark 3

(Register if necessary)

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Fiducial screen

By pressing the [Data Edit] button and opening the "Fiducial" tab, the following fiducial mark setting screen appears.

[Fiducial] tab screen

Basic parameters

[Measure] button

[End Test] button

Threshold slide bar Recognition results

[Save] button

[Light List] button

Mark list

Mark data list

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Creating inspection programs

2.4.1 Basic parameters

Basic parameters

[Template] button

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A. Algorithm Type

The algorithm type is selected from the following three types. "Form" should normally be selected.

If "Pattern Matching" is set, press the [Template] button, open the [Register Template] screen, and register marks in a

template.

• Pattern Matching

Recognizes the mark based on how closely it matches the image template.

• Form

Recognizes the mark based on the "Surface Type", "Std. Area", Mark Size XY", "Circularity", and "Perimeter" parameters.

• Edge

Recognizes the mark based on the "Surface Type" and "Mark Size" parameters.

D. Light Type

Selects the lighting used to recognize the mark.

F, G. Search Area X, Y (mm)

Sets the size of the area in which to search for the mark. Set the mark outline +3.00 mm as a guideline. For example, if

the mark outline is 1 mm as shown below, enter 4 mm. However, if there is a possibility that patterns (resist, silk, etc.)

other than marks may also be detected, narrow the mark detection range value so that only the mark is detected.

Mark detection range

Mark

Board

Mark detection range example

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H. Brightness Gain

Adjust this value to brighten the entire image so that the mark is easily recognized.

I. Brightness Offset

Adjust this value to make the entire image darker so that the mark is enhanced.

K. Thresh Lower Limit, L. Thresh Upper Limit

Sets the upper and lower threshold limits for the brightness with which the mark is shown in red when performing mark

recognition.