SAP Manufacturing Execution 5.1.3
Setting Up SPC
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Table of Contents
Introduction ..........................................................................................................................................1
Decisions to Make .............................................................................................................................1
Terms and Definitions........................................................................................................................1
Preliminary Steps.................................................................................................................................3
Installing Statit Server Software.........................................................................................................3
Setting Up System Rules...................................................................................................................7
Defining SPC Analysis on the Data Collection. .................................................................................7
Defining Event Types.........................................................................................................................7
Setting Up SPC ....................................................................................................................................9
Index....................................................................................................................................................11
SAP Manufacturing Execution 5.1.3 Setting Up SPC
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Introduction
You can use the SPC (Statistical Process Control) feature for monitoring a process during its
operation in order to control the quality of the products while they are being produced – rather than
relying on inspection to find problems after the fact.
SPC is a real time monitoring component. It enables the manufacturing engineer or production
supervisor to obtain and analyze statistical data about the manufacturing process at a site.
The SPC module also tests for trends in the data that are likely to detect a problem before an out-oflimit condition happens.
Decisions to Make
When you work with SPC, you decide:
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How you want SPC to run: perform SPC analysis on the data when it is collected.
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What chart type you want to define.
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What axes for control charts you want to maintain.
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What specification and control limits for primary charts you want to maintain.
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What specification and control limits for secondary charts you want to maintain.
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What alarm type you want to assign to each trend rule for a given site.
Terms and Definitions
SPC (Statistical Process Control)
The process of monitoring production quality and process performance through the use of statistical
methods.
SPC analysis software can take the measurements or other values that are passed to it from a data
collection, and from these measurements determine whether the item being manufactured falls
within specification limits, or a process (such as a production rate) is in statistical control.
SPC chart
A graphic representation of a characteristic or process, showing plotted values of some statistic
gathered from that characteristic, a central line, and one or two control limits.
Control limits
In SPC, control limits represent the expected variability of the process, under the hypothesis that the
process is in statistical control.
SAP Manufacturing Execution 5.1.3 Setting Up SPC
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Introduction
Control chart
In SPC, a graphical means of identifying when special causes are present and corrective action is
needed. It has two basic uses: to determine whether a process has been operating within statistical
control, and to aid in maintaining statistical control.
The control charts displayed can contain either variable data (quantitative data, where
measurements are used for analysis, such as resistance values, etc.) or attribute data (qualitative
data that can be counted for recording and analysis, such as the number of defects on a printed
circuit board).
Alarm
Notification of an event that occurs outside of planned manufacturing parameters; a feature that
warns someone of a problem, such as when an SPC rule violation is found.
Trend rules
Rules used to determine if a manufacturing process is in a state of statistical control.
SAP Manufacturing Execution 5.1.3 Setting Up SPC
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Preliminary Steps
The preliminary steps for setting up statistical process control include the following:
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Installing Statit server software.
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Setting up system rules.
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Defining SPC analysis on the data collection.
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Defining event types.
Installing Statit Server Software
The system supports an interface with Statit server software for statistical process control (SPC).
The Statit server is a product of Statware, Inc. The SPC feature is optional.
Installing the SPC server, which is only supported on a Windows platform, consists of the following
steps:
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Installing Statit e-Server
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Installing SAP Manufacturing Execution SPC
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Licensing the Statit e-Server
Important: You must install the Statit e-Server before you install the SPC server.
Supported Environment
Component
Supported Products, Version(s)
Application
VisipriseMfg_SPC_41
Note: Installs JRE 1.4.2
Application Server
Statit e-Server Version 5.34
Platform
Windows 2000/2003
Note: This product is Windows-based only. You cannot install this product on
a UNIX server.
Note: Five (5) Statit e-Server licenses will support five (5) simultaneous chart contexts. For more
than five (5) licenses, basic hardware requirements may have to be scaled upwards.
SAP Manufacturing Execution 5.1.3 Setting Up SPC
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Preliminary Steps
Installing Statit e-Server
To install the Statit e-Server, perform the following steps:
1. Insert the SAP Manufacturing Execution installation CD into the server machine and run the
setup file, server534.exe, located in the SPC directory. The Searching for Installed
Components message appears, followed shortly by the Statit Custom QC Not Found dialog
box. Click No.
2. The Statit e-Server Installation Welcome screen appears. Read the welcome screen and click
Next.
3. The Statit e-Server Installation Information dialog box appears. This screen contains
important information about Statit e-Server. Use the scroll bars to view all of the information.
Click Next.
4. The Statit e-Server Installation Choose Destination Location dialog box appears. Use this
screen to specify the location on the hard drive where the Statit server program files will be
located. The default installation directory is C:\Program Files\Statit e-Server.
5. To select an alternate Statit server directory, click Browse, and the Select Destination
Directory dialog box appears. Navigate to the drive and directory in which you want to install the
Statit Server files. When you are finished, click OK to return to the Statit e-Server Installation
Choose Destination Location dialog box.
6. Click Next, and the Statit e-Server Installation dialog box appears. Leave the Results URL
box blank and click Next.
7. The Statit e-Server Installation Backup Files dialog box appears. Click Yes, and specify the
location on the hard drive where the backup files will be located. The default destination
directory is C:\Program Files\Statit e-Server\BACKUP.
8. To select an alternate backup directory, click Browse, and the Select Destination Directory
dialog box appears. Navigate to the drive and directory in which you want to copy the backup
files. When you are finished, click OK to return to the Statit e-Server Installation Backup Files
dialog box.
9. Click Next. The Statit e-Server Installation License dialog box appears. Do not change the
selected option, Generate a 30 day evaluation license. To obtain a permanent license, contact
your Professional Services Organization (PSO) representative. Click Next.
10. The Statit e-Server Installation dialog box appears. Click Next.
11. The Installing message displays the progress of the installation. If the installation displays either
of the following error messages, click OK to continue. These error messages have no impact on
the installation.
The Check Registry Permissions message
SAP Manufacturing Execution 5.1.3 Setting Up SPC
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Preliminary Steps
The Program Error message
12. The Statit e-Server Installation screen appears. Click Finish to finish the installation.
13. Continue with the next section to install the SPC server.
Installing SAP Manufacturing Execution SPC Server
To install the SAP Manufacturing Execution SPC module, perform the following steps:
1. Insert the SAP Manufacturing Execution installation CD into the server machine and run the
setup file, VisipriseMfg_SPC_41.exe, located in the SPC directory. The Extracting Files
message appears, followed shortly by the Welcome dialog box. Read the welcome information
and click Next.
2. The Choose Destination Location dialog box appears. Use this screen to specify the location
on the hard drive where the SAP Manufacturing Execution SPC server program files will be
located. The default installation directory location is C:\Visiprise\VisipriseMfg\SPC
Server.
3. To select an alternate destination folder, click Browse, and the Choose Folder dialog box
appears. Navigate to the drive and directory in which you want to install the SAP Manufacturing
Execution SPC Server files. When you are finished, click OK to return to the Choose
Destination Location dialog box.
4. Click Next. The installation program displays the Select Program Folder dialog box. Use this
screen to specify the program folder for the SAP Manufacturing Execution SPC Server. The
default program folder, Visiprise\VisipriseMfg\SPC Server, is displayed in the
Program Folders field. Click Next to accept the default program folder.
5. The SPC Server Installation has finished selecting Components dialog box appears. Click
Next.
6. The Setup Complete message appears. Select the option you want for restarting your computer
and click Finish to complete the installation. If you select No, you must restart your computer
later.
7. Start the server by selecting Start > Programs > Visiprise > VisipriseMfg > SPC Server >
Start SPC Server.
Statit e-Server Instances
The number of simultaneous clients allowed to run Statit charts is determined by the SPC Server. To
change this value, edit the statit.server.licenses setting in the system.properties file
found in the SPC Server installation directory. This value is set to 5 by default. If this is increased,
the system must be tested to ensure that it performs adequately under the additional load.
SAP Manufacturing Execution 5.1.3 Setting Up SPC
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Preliminary Steps
Licensing the Statit e-Server
The SPC installation creates a 30-day evaluation license for the Statit e-Server. Once you have
received a full license, the Windows registry must be edited on the Statit server.
Launch the registry editor on the SPC server machine by selecting Start > Run and then typing
regedit:
Select the following folder:
HKEY_LOCAL_MACHINE\SOFTWARE\Statware\Statit Server\5.3\License
Modify the registry keys based on the values provided with your license:
Statit Data Name
Registry Key
Example - Notes
Site Name
SiteName
Visiprise Demo
Site ID
SiteID
9999 – (Be sure to input in Decimal mode)
Password
SiteCode
01ABC-ABC12-12345-ABCDE-O1XYZ-VWXYZ
After entering the license information, reboot the machine and restart the SPC server.
SAP Manufacturing Execution 5.1.3 Setting Up SPC
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Preliminary Steps
Setting Up System Rules
You need to set up the following rule in System Rule Maintenance:
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Statit Server Host Computer Name, to specify the name of the Statit server.
Defining SPC Analysis on the Data Collection
The system allows you to collect data at various points in the manufacturing process. You can
gather data at items, item groups, operations, router steps, and resources.
You define the performance of the SPC analysis on data collections in Data Collection Maintenance.
In Parameter Detail window, do the following:
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In the SPC Chart field, enter or select the desired chart name.
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In the Display Chart field, select the appropriate option for displaying the SPC chart to the
operator during data collection.
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Select the Short Run check box to define the short run data for the current chart.
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Select the Perform SPC Analysis check box to perform SPC analysis on the data when it is
collected.
For more information about defining data collections, see the online help for Data Collection
Maintenance.
Defining Event Types
When a chart is being defined, in the Event Maintenance activity, you may define the desired clear
and delete intervals for the two SPC-related event types, which are: SPC_ALARM_WARNING, and
SPC_ALARM_VIOLATION. Specifying clear and delete intervals is not mandatory, but is
recommended to prevent database tables from quickly filling with SPC alarm data. A suggested
value is 86400 seconds, which is 24 hours. If desired, you can also modify the severity of the event
type.
Note: In the Event Maintenance activity, do not delete the following event type definitions, which are
required by SPC alarming: SPC_ALARM_WARNING, and SPC_ALARM_VIOLATION.
SAP Manufacturing Execution 5.1.3 Setting Up SPC
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Setting Up SPC
To set up SPC:
1. If you want to perform SPC analysis on data when it is collected and then display it and any
alarm comments to the operator during collection, complete the following fields in Data
Collection Maintenance:
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The SPC Chart field to perform SPC analysis during data collections.
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The Display Chart field to display the SPC Chart to the operator.
Note: For more information about data collections, see the online help for Data Collection
Maintenance.
2. Define the chart type and labels in SPC Chart Maintenance, Chart Labels tab.
3. Define axes for control charts in SPC Chart Maintenance, Chart Labels tab.
4. Define specification and control limits for primary chart in SPC Chart Maintenance, Primary
Chart Details tab.
5. Define specification and control limits for secondary chart in SPC Chart Maintenance, Secondary
Chart Details tab.
6. Assign an alarm type to each trend rule for a given site.
Note: For more information about trend rules, see the online help for SPC Alarm Severity
Maintenance.
7. If you want to view control charts and a summery of trend rules defined for the specific site,
select the SPC Display activity from the Activity Manager.
8. Click the Search option to display the chart in the bottom portion of the SPC Display window.
Note: For more information about viewing SPC charts, see the online help for SPC Display.
SAP Manufacturing Execution 5.1.3 Setting Up SPC
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Index
D
S
Defining event types
Event Maintenance, 8
Setting up SPC
defining event types, 8
defining SPC analysis on the data
collection, 8
preliminary steps, 3
terms and definitions, 1
Defining SPC analysis on the data collection
Data Collection Maintenance, 8
E
Event types
SPC_ALARM_VIOLATION, 8
SPC_ALARM_WARNING, 8
I
Installation
SPC server, 3
Statit server, 3
Setting up system rules
System Rule Maintenance, 8
SPC Chart Maintenance
chart type, 9
control chart, 9
specification and control limits, 9
SPC Display, 9
SPC server
installing, 3
requirements, 3
SAP Manufacturing Execution 5.1.3 Setting Up SPC
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