2OM-1104-001.pdf - 第36页

(3) Size D1 and Size D2 Set the dimensions of fiducial marks. Unit: mm Refer to "T ype and Size" in "(8) Fiducial Marks" for details. (4) Rcg. Area Set the recognition areas for the P .E.C. and screen…

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

0009-002 Chapter 1 2 12 AFU01EDTP

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

0004-001 Chapter 1 2 13 AFU01EDTP

1.2 Operation Data

(6) Level

Set the threshold levels of the fiducial marks.

High : Both identity and similarity between the shape of a fidu-

cial mark and the real image are detected on a high level.

Middle : Either identity or similarity between the shape of a fidu-

cial mark and the real image are detected on a middle

level.

Low : Both identity and similarity between the shape of a fidu-

cial mark and the real image are detected on a low level.

Identity:

Identity between the shapes of the specified mark and the

real image (including the size)

Similarity:

Similarity between the shapes of the specified mark and

the real image

(7) Lighting

A lighting mode can be specified to illuminate the P.C.B.

Only “Normal” can be selected for the standard machine (stan-

dard specifications).

Normal

Select this when there is enough difference in contrast between a

fiducial mark and a P.C.B. (Recognition by Pattern Matching

Method)

Fig. 3B48

P.C.B.

Fiducial Mark

(Bright)

Level

High

Fig.3B46

0106-002 Chapter 1 2 14 AFU01EDTP

1.2 Operation Data

Lighting

Normal

Fig.3B47