YSI_Prog_E - 第96页

2-25 2 Creating inspection pr ograms n Bad mark screen By pressing the [Data Edit] button and opening the "Bad Mark" tab, the following bad mark setting screen appears. [Bad Mark] tab screen [T race] button [Li…

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Creating inspection programs

2.5 Bad mark function

The bad mark function involves affixing a mark (bad mark) to a set location on the board in order to cancel

parts inspection when the mark is recognized by the inspection machine.

Bad mark function

Parts are inspected when no bad mark is detected.

Parts are not inspected when a bad mark is detected.

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The following three types of bad mark are available. Use these bad marks accordingly depending on the

purpose.

Board bad mark

A bad mark is assigned to each board, and is used to judge whether the inspection machine searches for a bad mark. If,

for example, there is a mix of multi-board panels, some with defective blocks and some without, being transfered on the

conveyor, it will be a waste of time to search for bad marks on all boards even when there are no defective blocks. By

using the board bad mark function, a search is only performed for bad marks if a board bad mark is recognized. When

not recognized, an unconditional parts inspection is performed for all blocks.

Block bad marks

Bad marks are set for each block, and block inspection is skipped if the machine detects a bad mark. If, for example, no

parts have been mounted on block B (defective block) on a multi-board panel comprising blocks A, B, C, and D, a bad

mark is affixed to the board for block B. The inspection machine searches for bad marks on all blocks prior to inspection,

inspection of block B on which the bad mark was recognized is canceled, and parts inspection is performed only for

blocks A, C, and D.

TIP

If block bad marks exist in the inspection view ﬁeld-of view, by performing mark recognition in the same view as step

inspection without performing axis movement only for bad mark recognition during auto inspection, inspection tact

time is reduced. When editing data, the camera moves to all bad mark positions to perform recognition.

Local bad marks

Bad marks are set for each step, and step inspection is skipped if the machine detects a bad mark.

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Creating inspection programs

Bad mark screen

By pressing the [Data Edit] button and opening the "Bad Mark" tab, the following bad mark setting screen appears.

[Bad Mark] tab screen

[Trace] button

[Light List] button

[Thresh] button

[Test] button

[Save] button

Recognition results

Field-of-view image

Basic parameters

Mark data list

Mark list

Board image

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2.5.1 Basic parameters

Basic parameters

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D. Light Type

Selects the lighting used to recognize the mark.

E. Surface Type

Select "Reflect" or "Non-reflect" from the drop-down list based on the mark being used.

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

Sets the size of the area in which to search for the mark. The value can be entered from 0.00 to 150.00 (unit: mm). The

presence of bad marks is judged based on whether the inside of the detection range is reflective or non-reflective, and

therefore a range smaller than the size of the mark is set.

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.

J. Thresh

Press the [Thresh] button to set the threshold value for mark detection.

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Creating inspection programs

2.5.2 Bad mark settings

Press the [Data Edit] button and open the "Fiducial" tab.

Set bad marks

Open the tab for which fiducials are to be set, and set the fiducial function to "Execute".

Bad mark settings

Select a tab.

Set to "Execute".

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"Board" tab (board bad mark)

Set when using the block bad mark or local bad mark function.

"Block" tab (block bad mark)

Skips inspection of each block.

"Local" tab (local bad mark)

Skips inspection of arbitrary steps.

Set the mark list.

Mark list settings

[Teach] button

XY coordinates, mark Nos.

[Trace] button

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X1, Y1

Enter the bad mark coordinates. If bad mark coordinates are unknown, coordinates can be entered by

teaching. After clicking the bad mark on the board image, click the center of the bad mark in the

field-of-view image. After setting the mark parameters, press the [Teach] button when the test result is

"OK". The recognized center coordinates are entered.

Mark 1

This number corresponds to the number in the mark data list, and therefore a mark No. for which no

fiducial mark has been set should be entered.

NOTE

• Ifsettingblockbadmarks,setthebadmarkinthelineforeachblockNo.

• Ifsettinglocalbadmarks,settherespectivelocalducialmarks.Setthemarklistnumberforthe"G.LocalBad 

Mark No." optional parameter for the relevant step.

TIP

If the bad mark is unclear, use the U, H, M, or L lighting buttons to change the lighting so that the mark becomes

clearer.