3OM-1050-002.pdf - 第56页

(A03_07) Recog Algo Select "Pattern match" or "Edge detection" as a P .E.C. recognition algorithm. In normal cases, select "Pattern". Pattern : Select this when there is enough difference in…

(A03_04) Window Size [mm]

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

function.

Unit: mm

Data Input Range

1.0 × 1.0 to 5.0 × 5.0

Set preferably small values to avoid false recognition and shorten rec-

ognition time.

Fig. 3B62

(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) Mark 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 im-

age (including the size)

(b) Similarity

Similarity between the shapes of the specified mark and the real

image

Window Size

Fiducial Mark

2.3 Operation Data

0301-005 2-36 AFO01EDTP

5.0

Window Size [mm]

Fig. 3B61

High

Mark Level

Fig. 3B64

Bright

Mark Image

Fig. 3B63

(A03_07) Recog Algo

Select "Pattern match" or "Edge detection" as a P.E.C. recognition

algorithm.

In normal cases, select "Pattern".

Pattern : Select this when there is enough difference in contrast

between a fiducial mark and a P.C.B. (Recognition by

Pattern Matching Method).

Fig. 3B66

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. 3B67

Fiducial Mark (Bright)

P.C.B.

Fiducial Mark (Bright)

P.C.B. (Bright)

Shadow of Fiducial Mark

2.3 Operation Data

0301-005 2-37 AFO01EDTP

Pattern

Recog Algo

Fig. 3B65

(A03_08) Fiducial Marks

(1) Shape and Size

Table 3B16

Mark Type D1 (Unit: mm) D2 (Unit: mm) Remarks

0.5 to 3.0 (±10%) 0 to 2.8 (±10%) • Mark Reference: Center

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

Hole

0.5 to 3.0 (±10%) 0 to 2.8 (±10%) • Mark Reference:

(D1 - 0.2 D2) Center of Gravity

• D2: Diameter of Punched

Hole

0.5 to 3.0 (±10%) 0 to 2.8 (±10%) • Mark Reference:

(D1 - 0.2 D2) Center of Gravity

• D2: Diameter of Punched

Hole

0.5 to 3.0 (±10%) 0.2 to 1.5 (±10%) • Mark Reference:

(D1/2 D2) Center of Gravity

0.5 to 3.0 (±10%) 0.5 to 3.0 (±10%) • Mark Reference:

Center of Gravity

0.5 to 3.0 (±10%) - • Mark Reference:

Contact of Two Squares

0.5 to 3.0 (±10%) 0 to 2.8 (±10%) • Mark Reference:

(D1 - 0.2 D2) Center of Gravity

• D2: Diameter of Punched

Hole

0.5 to 3.0 (±10%) 0 to 2.8 (±10%) • Mark Reference:

(D1 - 0.2 D2) Center of Gravity

• D2: Diameter of Punched

Hole

0.5 to 3.0 (±10%) - • Mark Reference:

Contact of Two Fan

Shapes or Triangles

2.3 Operation Data

0307-005 2-38 AFO01EDTP

(Front Side of Machine)

45q

(Front Side of Machine)

(

Front Side of Machine

)

(Front Side of Machine)

RoundSquareCrossRectangle

Checker

(Square)

Diamond

(Rotated Square)

Bow Tie

Equilateral

Triangle

(Upturned)

Equilateral

Triangle

(Downturned)