创建组件识别数据的方法.pdf - 第75页
75/178 IM-SMT-VSNDI C-0002 -000 Option 3: Recog nition flag Option 4: Allo wable length err or (set as a va lue in units of 1/10 mm ). Values to be s et are those bet ween 0 and 2 55 (0.1 ~ 25.5 m m) . It does not per fo…
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Figure 57
2.9.3. Special recognition of connectors
There are several algorithms available in the Connector Recognition mode.
(1) Special 1: Side Lead Fitting
This mode is effective when there are items other than leads that show up as white,
which makes it difficult to detect the leads easily.
This mode improves the recognition rate by checking the positional relations between the
leads and extracting the combination best fits the component definition when detecting
the end leads.
Option 1: Lead detection flag.
Option 2: Filter settings
Bit position
Detection of check of distance between 2 pins at lead search end:
( 0:Yes, 1:No)
Lead search direction: ( 0: Inclined 1: Horizontal / vertical)
Bit position
Number of times that filter is applied when lead search is conducted.
(0-3) The lead search should be performed by using the filter with its
maximum value in order to respond to the components whose lead is
curved, and the curved surface is the ground plane to the board.
( 0: No filtering, 1: 3 x 3 maximum filter, 2: 5 x 5 maximum filter,
3: 7 x 7 maximum filter)
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Option 3: Recognition flag
Option 4: Allowable length error (set as a value in units of 1/10 mm).
Values to be set are those between 0 and 255 (0.1 ~ 25.5 mm).
It does not perform check when the value is 0.
(When setting the value larger than 128, please input the value that 256 is
subtracted from the set value.)
The following is the actual example of the setting and the recognition result.
<<Items to be set for Special 1 connectors>>
Items to be set Set value
Alignment Group Special
Alignment Type Special
Comp. Threshold 50
Comp. Tolerance 30
Search Area (mm) 5.0
Body Size X (mm) 7.0
Body Size Y (mm) 15.0
Body Size Z (mm) 2.0
Cntr. Offset X (mm) 0.0
Cntr. Offset Y (mm) 0.0
Cntr. Offset R (mm) 0.0
Ruler Width 3
Algorithm Special 1
Base Alignment Special
Vision Option 1 0
Vision Option 2 0
Vision Option 3 0
Common
Data
Vision Option 4 0
Lead Group E 1
Common
Ruler Offset E 5
Lead Number: 1E 10
Reflect LL.: 1E (mm) 1.0
Lead Width: 1E (mm) 0.2
Lead Pitch: 1E (mm) 1.0
Find Pos X: 1E (mm) 3.5
E
Direction
Group 1
Find Pos Y: 1E (mm) 4.5
Table 51
Bit
position
Excessive Lead Check (0:Non, 1:Exist)
(It checks whether the extra leads exist outside of pitch 1)
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Figure 58
As described above, sometimes “Special 1” mode does not provide stable recognition.
When the leads for securing the connector are located close to the targeted leads, detection
error may occur as shown in Figure 59.
Figure 59
In this case, stable recognition can be performed by including leads used to secure
connectors as the target in the recognition process as shown in
Figure 60.