Statistical Data Interface (QM-STI) (SAP Library - Statistical Data Interface (QM-STI))

Statistical Data Interface (QM-STI)

Purpose

The QM-STI (Statistical Data Interface) is an open interface linking the Quality Management (QM) application component to external evaluation systems. You can use this function to perform evaluations that are not supported by the statistical functions in QM results recording (control charts, histograms, process capability indices). You can use a format defined by SAP to transfer the recorded inspection results from the QM component to the external evaluation system.

The interface can be used in the following cases:

· For the Manual Statistical Analysis of QM Inspection Results

In order to analyze QM inspection results in your own statistics system, you need an evaluation method that transfers inspection results and calls up the statistics system.

· For the Automatic Start of Predefined Statistical Analyses

You can perform predefined statistical evaluations directly from transactions. For example, you can display probabilities in QM results recording or in a control chart. A prerequisite for this is that the evaluation method has been created and released with the appropriate evaluation steps by the project team.

Implementation Considerations

To use this function, you need an external statistics system that supports the QM-ST Interface. In the standard system an evaluation method is provided in Microsoft Excel^â. In this example, the driver is programmed in ABAP and controls Microsoft Excel^â using OLE technology (Object Linking and Embedding). Usually the drivers are installed on external systems as RFC server programs.
This evaluation method is defined in Customizing. For more information, see Customizing for Quality Management by choosing Quality control ® QM Information system ® Inspection lot ® Define evaluation methods for QM-STI.

Features

The following data is copied to an external statistics system using the QM-STI Interface:

· Inspection results from statistical processes

(for example, measurement data from a machine)

· Specifications for calculating statistics

(for example, specification limits, action limits, distribution models)

· Additional data for formatting graphs and printouts

(for example, units of measurement, descriptions, vendor address)

· Retraceable data for inspection results

(for example, inspection lot number, sample number, physical sample number)

Constraints

The QM-STI Interface does not support the transfer of statistical results from external systems into the SAP system. It only transfers quantitative data to external systems.