The Package Matching tab allows you to create links between part numbers and packages which can then be sent to the Fuji machine once the machine program is generated.

How the Lead Count value is determined

The determination of the Lead Count value from the Fuji data varies by the type of package. The import calculates the Lead Count value as follows.

For each package definition (<Part> tag within the *.FDX file), the import routine determines the Lead Count as indicated in the Interpretation for LeadCount Determination column in the table below.

Determining the Lead Count for ShapeType Special

Using North as the example:

If LeadGroupN = 0 then Lead Count N = 0;

If LeadGroupN = 1 then Lead Count N = LeadNumN1;

If LeadGroupN = 2 then Lead Count N = LeadNumN1 + LeadNumN2

The Lead Pitch value from the Yamaha data varies by the type of package. A package definition may have one or more LeadPitch tag values which may or may not have the same value. The Search algorithm for each package definition uses the LeadPitch value closest to the specified Lead Pitch value in the Search criteria.

When you select the Search button in the dialog, a score (a percentage value) is calculated for each package definition in the locally cached package library. The scoring is implemented as shown in the following table:

In addition, when the package search is performed, each package entry is dimensionally compared to the item displayed in Component Part No as follows.

• The bounding rectangle of the item displayed in Component Part No is calculated and the long and short dimensions are determined (these are referred to as boundingX and boundingY respectively).
• If a tolerance (absolute not a percentage) value is defined in the Search criteria the specified Tolerance is used; otherwise the Tolerance value is set to the candidate package’s Tolerance value (if one is defined).

The Minimum score is calculated like this:

The same calculation is made twice, once for the length of a package (using the bounding rectangle length and the BodyX values), and once for the width of a package (using the bounding rectangle width and the BodyY values). This calculation is made as shown below:

LMax    = Bounding Rectangle Measurement + Tolerance
LMin     = Bounding Rectangle Measurement - Tolerance
ΔL        = Abs (Bounding Rectangle Measurement – Package Measurement)
Factor   = Bounding Rectangle Measurement + Package Measurement - ΔL
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       Bounding Rectangle Measurement + Package Measurement

If          LMax >= Package Measurement >= LMin

then the measurement is within the tolerance limits and

Length Score = Factor * 100

otherwise the measurement is not within the tolerance limits and

Length Score = Factor * 70

After the Length Score is calculated for both the length and the width values of the package, the two values are combined to give the overall dimension Score:

Dimension Score =        Length Score [Length] + Length Score [Width]

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2

Any search criteria not specified results in the maximum points for that criteria being scored.

All package definitions with a score that equals or exceeds the Minimum Score (as defined by the operator in the Search criteria) are displayed in order in the Candidate Packages list area of the dialog with the highest score listed first.