YesAX V3.1.2 - Software User Manual - 第213页

SPC Data Logg ing 15 -9 15.7 External DLL Interface Yes AX ’s extension DL L (Dynamic Link Library) interface is a custom API (application program interface) design ed to interface various shop floor management systems o…

15-8 SPC Data Logging

On a board with no real defects, the opportunity for false calls is the same as the opportunity for

defects. To simplify the calculation we assume the opportunity for false calls also as the sum of

Marking, Lead Bank, and Solder inspections.

A high defect rate would indicate problems upstream. A high false call rate may indicate the

inspection recipe should get additional tweaking.

15.6.2 Defect Alarms

The defect alarm triggers when the user-specified defect conditions are exceeded. There are 10

defect alarms. You can set one defect alarm to trigger when there are more than 3 part defects in

the last 5 runs of boards. You can set another defect alarm to trigger when there are more than 10

solder defects in the last 3 runs of boards.

The first step to setup a defect alarm is to group the defects into classes. This is done by editing

the defect.ini file. Use the @C# notation to assign a class to each defect. The class number starts

with 1 and ends with 9. Defects with no class assignment default to class 0. Here is a sample

defect.ini file with the class assignment.

[01] Unclassified

[02] Missing Part@S@C2

[03] Wrong Part@S@C1

[04] Tombstone Part@S@C4

[05] BillBoard Part@S@C2

[06] Skew Part@C2

[07] Wrong Polarity@S@C3

[08] Lead Solder Bridge@C4

[09] Bend Lead@C4

[10] Insufficient Solder@C4

[11] Solder defects@C4

[12] False Call

After setting the defect classes, setup the trigger condition by selecting Process Alarm.. from the

System menu. The Process Alarm Setup dialog displays.

SPC Data Logging 15-9

15.7 External DLL Interface

YesAX’s extension DLL (Dynamic Link Library) interface is a custom API (application program

interface) designed to interface various shop floor management systems or WIP (work-in-

progress) tracking systems. For various data logging events, the YesAX software calls functions

in the extension DLL (DataLogExt.DLL). You can implement these functions in the DLL to

link with their specific data collection system. Programming skills are required to implement

these interfaces.

Please refer to the ExtDLL.zip file in the Document folder on the YesAX release CD for sample

code and a write-up about the interface.