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1.2.6 Mark Data Ther fiducial mark data can be edited. (1) Code The mark codes correspond to the code Nos. of the fiducial marks used in the P .E.C. and screen recognition functions. 10 types of mark codes can be registe…

1.2.5 Screen Recognition

(1) Scr. Recog. Function

It can be selected whether or not the screen recognition function

should be used.

2PT. : The machine performs the two-point recognition.

OFF : The machine does not perform the screen recognition.

One of the options ("OFF", "1PT.", "2PT.", and "3PT.") can be se-

lected. However, the machine perform the recognition only when

"2PT." is selected.

(2) Center Recognition

It can be selected whether or not the center recognition should be

performed.

ON : The machine performs the center recognition.

OFF : The machine does not perform the center recognition.

Mark Y is recognized once and the camera is moved to the posi-

tion where the recognized fiducial mark is located at the center of

the visual field. After that, the fiducial mark is re-recognized.

The positional accuracy is improved because the mark is recog-

nized at the center of the visual field (the spot of the lens with less

distortion).

(3) Fiducial Mark #1

X (horizontal) and Y (vertical)

Set the coordinates of the first fiducial mark.

Unit: mm

Code

Set the code No. of the first fiducial mark for screen recognition.

(4) Fiducial Mark #2

X (horizontal) and Y (vertical)

Set the coordinates of the second fiducial mark.

Unit: mm

Code

Set the code No. of the second fiducial mark for screen recogni-

tion.

Scr. Recog. Function

2PT.

Fig.3B36

Center Recognition

OFF

Fig.3B37

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1.2 Operation Data

Fig.3B38

X (Horizontal)

Y (Vertical)

000.000

Code

X (Horizontal)

Y (Vertical)

000.000

Code

Fig.3B39

1.2.6 Mark Data

Ther fiducial mark data can be edited.

(1) Code

The mark codes correspond to the code Nos. of the fiducial marks

used in the P.E.C. and screen recognition functions.

10 types of mark codes can be registered for each pattern pro-

gram.

(2) Figure

The following options can be selected as shapes of fiducial marks.

Mark Types Table 3B1

CODE

Fig.3B40

FIGURE

Circle

Fig.3B41

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1.2 Operation Data

(3) Size D1 and Size D2

Set the dimensions of fiducial marks.

Unit: mm

Refer to "Type and Size" in "(8) Fiducial Marks" for details.

(4) Rcg. Area

Set the recognition areas for the P.E.C. and screen recognition

functions.

Unit: mm

Set preferably small values to avoid false recognition and shorten

recognition time.

Fig. 3B44

(5) Pol.

Set polarities of the mark patterns for images captured by the cam-

era.

Select either mode according to the difference in contrast between

a mark pattern and its surrounds to get a clear fiducial image.

Bright : Bright Fiducial/Dark Background

Dark : Dark Fiducial/Bright Background

Wrong mode selection causes malfunction of fiducial mark

recognition.

Recognition Area

(Complete Square)

Mark Dimension

Rcg. Area

05.0

Fig.3B43

Size D1

Size D2

0.50

0.00

Fig.3B42

Pol.

Bright

Fig.3B45

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1.2 Operation Data