OM-1650-001_w.pdf - 第23页

OM-1650 20 9. Bad Mark Camera T est PEC Recog [Continuation] Button : When selected, the recognition test is performed continuously. [Step] Button : When selected, the recognition test is performed step by step. [Set to …

OM-1650

9. Bad Mark Camera Test

When the camera system is used in the bad mark detection function, the

"Threshold" is calculated to set the "Value of threshold" on the "PCB Data" sub-

tab sheet on the "Operation Data" tab sheet.

[1]

[3]

[2]

[4]

F14

[1] Displayed Image Operation Button

Using the following buttons, the modes for performing the enlarging or

movement operation for the image displayed in the recognition image display

pane [2], are changed.

Reference

Refer to "7. Test and Teaching" in Chapter 6 in Volume 2 in the

SIGMA-G4/G5 Instruction Manual for the displayed image operation

buttons.

[2] Recognition Image Display Section

The recognition results are displayed in this section.

[3] Bad Mark Camera Test Measurement Results

The bad mark camera test measurement results are displayed in this section.

[4] Operation Buttons

Specify Bad Mark

[Master] Button

: This button is selected when the Master Bad

Mark Detection (Overall BBR Detection) is to be

performed.

[Normal] Button

: This button is selected when the normal BBR

detection (individual detection) is to be performed.

[Data Teach] Button

: This button is selected when the data teaching is to

be performed.

[Data Edit] Button

: This button is selected when the data editing is

performed.

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OM-1650

9. Bad Mark Camera Test

PEC Recog

[Continuation] Button

: When selected, the recognition test is

performed continuously.

[Step] Button

: When selected, the recognition test is

performed step by step.

[Set to Cmt PP Dt] Button

: When selected, the test data after data editing

is registered as the pattern program data.

Judgement Threshold Calculation Procedure

Procedure

(1) Put a bad mark on the PCB to be produced.

Note

(a) Use a black mark as a bad mark for a comparatively bright PCB detection

area (PCB with a lot of light reﬂex).

Use a white mark as a bad mark for a comparatively dark PCB detection

area (PCB with a little light reﬂex).

(b) When the selection is changed (from "Black Mark" to "White Mark" or

vice versa), be sure to change the mark image ("Black (E/NR)" or "White

(E/R)" in the related "Mark Image" text box of the pattern program data.

(2) Move the PCB to be produced to the PCB positioning section.

(Transfer the PCB to the block where the bad mark is detected using the PEC

recognition camera, using the [PCB XFER] button or [MNL XFER] button).

(3) At ﬁrst, select the unit PCB with a bad mark and perform the "Step Move".

Then, select the unit PCB without a bad mark and perform the "Step Move".

Bad Mark Exist F15

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OM-1650

9. Bad Mark Camera Test

Bad Mark Not Exist F16

As a result of the camera test and measurement for bad mark detection, the

gray value of the bad mark is indicated in the "Grad.

Val." cells and "Exist" or "Not Exist" in the "Judge" cells.

The mean value of the gray values for "Exist" and "Not Exist" (Bad Mark

Detection) is regarded as a threshold value for the bad mark detection.

Example :

Result of Measurement

85 in "Grad. Val." Cell for "Exist" in "Judge" Cell

199 in "Grad. Val." Cell for "Not Exist" in "Judge" Cell

85 + 199 = 284 ÷ 2 = 142 = Threshold Value

(4) When the data is to be taught, press the [Data Teach] button and when the

data is to be edited, press the [Data Edit] button.

Reference

When the data teaching is to be performed, refer to "10. Camera Bad Mark

Teaching".

Specify Bad Mark : Master F17

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