3OM-1075-002.pdf - 第51页

(A03_07) Recog Algo Select "Pattern" or "Edge" as a P .C.B. recognition algorithm. In normal cases, select "Pattern". Pattern : Select this when there is enough difference in con- trast betw…

(A03_04) Window Size [mm]

Set the recognition area (complete square) for the P.E.C.

recognition function.

Unit: mm

Set preferably small values to avoid false recognition and

shorten recognition time.

Fig. 3B53

(A03_05) Mark Image

Select one of the following options as an image of the mark

pattern to be captured by the camera.

Select either mode according to the difference in contrast

between a mark pattern and its surroundings to get a clear

fiducial images.

Bright : Bright Fiducial/Dark Background

Dark : Dark Fiducial/Bright Background

Wrong mode selection causes malfunction of the recognition.

(A03_06) Type Level

Set the threshold levels of the fiducial marks.

High : Both identity and similarity between the shape of a

fiducial mark and the real image are detected on a

high level.

Middle : Either identity or similarity between the shape of a

fiducial mark and the real image are detected on a

middle level.

Low : Both identity and similarity between the shape of a

fiducial mark and the real image are detected on a

low level.

(a) Identity

Identity between the shapes of the specified mark and the

real image (including the size)

(b) Similarity

Similarity between the shapes of the specified mark and

the real image

0206-003 2-31

AHB01EDTP

2.3 Operation Data

5.0

Window Size [mm]

Fig. 3B52

Fig. 3B55

Type Level

High

Mark Image

Fig. 3B54

Bright

Window Size

Fiducial Mark

(A03_07) Recog Algo

Select "Pattern" or "Edge" as a P.C.B. recognition algorithm.

In normal cases, select "Pattern".

Pattern : Select this when there is enough difference in con-

trast between a fiducial mark and a P.C.B. (Rec-

ognition by Pattern Matching Method).

Fig. 3B57

Edge : Select this when there is not much difference in

contrast between a fiducial mark and a P.C.B. and

the shadow of the fiducial mark is cast around

the mark. (Correction by Mark Edge Detection

Method).

Fig. 3B58

P.C.B.

Fiducial Mark (Bright)

P.C.B. (Bright)

Shadow of Fiducial Mark

Fiducial Mark (Bright)

2.3 Operation Data

Recog Algo

Fig. 3B56

Pattern

0206-002 2-32 AHB01EDTP

(A03_08) Fiducial Marks

(1) Shape and Size

Table 3B16

Mark Type D1 [mm±10%] D2 [mm±10%] Remarks

0.5 to 3.0 0 to 2.8 • Mark Reference: Center

(D1 - 0.2 D2) • D2: Diameter of Punched

Hole

0.5 to 3.0 0 to 2.8 • Mark Reference: