QM: SPC - New Functions for Quality
This release note contains information about the new functions
and transactions for quality control charts in Release 4.0A. You
can only use certain functions if you change the settings for the
control chart type in
accordingly (see Quality Management -> Quality
Planning -> Basic Data -> Sample, SPC
-> Control Chart -> Define control chart
type). These changes also apply to the control charts that
New transactions for quality control charts
Using the new transactions, you can also process and display
quality control charts independently of the functions for
recording, changing, and displaying inspection results.
QGC1: Quality control charts for inspection lots
QGC2: Quality control charts for insp. characteristics in a
You can access these transactions in the SAP main menu by
choosing Logistics -> Quality management ->
Quality planning -> Work list ->
Quality control chart -> (...).
Using these new transactions, you can select, display, and process
control charts for inspection lots or for inspection
characteristics in a task list. In each case, the system displays a
configurable list of the control charts from which you can make
You can use the following functions in the list:
Display a control chart
Activate one or more control charts
Close one or more control charts
Save the changes
You can define general or user-specific selection variants and
list variants in
for the selection screens and list configuration.
New functions for quality control charts
You can use the following new functions for the control
Enter control limits manually
In a control chart track, you can display the control limits in a
window. If you have the necessary SPC authorization, you can enter
or change the control limits manually, provided this is allowed by
the corresponding settings in
Display control limits
, you specify whether the lower limiting value, upper limiting
value, and target value for a characteristic should be displayed in
the control chart track. With the corresponding settings, you can
also display and hide this information.
Display statistical values
In the control charts for qualitative characteristics, you can
calculate and display the process capability index
Use the paging function
If you select object numbers for the reference axis in the control
chart type (
you can also specify the number of samples the system will display
in the graphic. If a chart contains more entries than the preset
interval size, you can display other sections of the control chart
using the appropriate pushbuttons.
Display current timeline
If you select a reference axis with a time reference in the control
chart type, you can use a pushbutton to display the current date
and time in the graphic.
Update the display
You can update the display in a control chart. When you do this,
the system reads and evaluates the inspection results from the
Generate statistical evaluations via QM-STI interface
To evaluate the sample results for a control chart statistically,
you can call up an external statistics package using the QM-STI
component. For more information about the QM-STI interface, refer
to a separate release note.
The following technical enhancements were made for the quality
Colors and lines
The colors and lines used in the control charts were changed for
The delivery class for the control chart types and SPC criteria was
changed from C to G. A separate namespace has been defined for
customer entries. This namespace includes all entries that begin
with the number 9 or with a letter from A through Z.
Deleting quality control charts
The deletion program for inspection results has been enhanced.
Following a reorganization run, the system also deletes the control
charts that no longer reference inspection results.
Additional parameters for function modules
The interface of the function modules for the control chart tracks
has been expanded by two integral parameters. This allows you to
define additional parameters for the statistical algorithms. This
enhancement is upward compatible. You do not have to change
existing function modules.