Siemens SIMATIC Box PC 840 User manual

Preface, Contents
Important Information 1
Welcome to the SIMATIC Rack PC 840 2
Setting-up and Operating
the SIMATIC Rack PC 840 3
SIMATIC Rack PC 840 Expansions 4
Configuring the SIMATIC Rack PC 840 5
Error Diagnosis 6
Hardware Information 7
Controller 8
Reinstallation of the Software 9
Appendix
Guidelines for ESD A
Technical Specifications B
Retrofit Notes C
Glossary, Index
Edition 04/2002
A5E00104826-03
SIMATIC Rack PC 840
Manual
SIMATIC

Index-2 DokumentationTitel 1Titel 2
EWA 4NEB 780 6023-01
!Danger
indicates that death, severe personal injury or substantial property damage will result if proper precautions
are not taken.
!Warning
indicates that death, severe personal injury or substantial property damage can result if proper
precautions are not taken.
!Caution
indicates that minor personal injury can result if proper precautions are not taken.
Caution
indicates that property damage can result if proper precautions are not taken.
Notice
draws your attention to particularly important information on the product, handling the product, or to a
particular part of the documentation.
Qualified Personnel
Only qualified personnel should be allowed to install, repair and work on this equipment. Qualified
persons are defined as persons who are authorized to commission, to ground and to tag circuits,
equipment, and systems in accordance with established safety practices and standards.
Correct Usage
Note the following:
!Warning
This device and its components may only be used for the applications described in the catalog or the
technical description, and only in connection with devices or components from other manufacturers which
have been approved or recommended by Siemens.
This product can only function correctly and safely if it is transported, stored, set up, and installed
correctly, and operated and maintained as recommended.
Trademarks
SIMATIC, SIMATIC HMIand SIMATIC NETare registered trademarks of SIEMENS AG.
Third parties using for their own purposes any other names in this document which refer to trademarks
might infringe upon the rights of the trademark owners.
Safety Guidelines
This manual contains notices intended to ensure personal safety, as well as to protect the products and
connected equipment against damage. These notices are highlighted by the symbols shown below and
graded according to severity by the following texts:
We have checked the contents of this manual for agreement
with the hardware and software described. Since deviations
cannot be precluded entirely, we cannot guarantee full
agreement. However, the data in this manual are reviewed
regularly and any necessary corrections included in
subsequent editions. Suggestions for improvement are
welcomed.
Disclaim of LiabilityCopyright WSiemens AG 2001-2002 All rights reserved
The reproduction, transmission or use of this document or its
contents is not permitted without express written authority.
Offenders will be liable for damages. All rights, including rights
created by patent grant or registration of a utility model or
design, are reserved.
Siemens AG
Organization Group Automation and Drives
Division Systems Engineering
Postfach 2355, DĆ90766 Fürth
Siemens AG 2001-2002
Technical data subject to change.
Siemens Aktiengesellschaft A5E00104826

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Preface
Purpose of the Manual
This manual contains all the information you need for commissioning and using the
SIMATIC Rack PC 840.
It is intended both for programming and testing/debugging personnel who
commission the device itself and connect it with other units (automation systems,
further programming devices) as well as for service and maintenance personnel
who install expansions or carry out fault/error analyses.
Where is this Manual Valid?
This manual is valid for all supplied variations of the SIMATIC Rack PC 840 and
describes the state of delivery as of April 2002.
Certifications, Standards and Approvals
Certifications
The device fulfils the following guidelines and certifications:
EU guideline 73/23/EEC on low voltages
EU guideline 89/336/EEC on electromagnetic compatibility
Underwriters Laboratories (UL) to Standard UL 1950
Canadian Standard Association (CSA) to Standard C22.2 No. 950
Standards and Approvals
The device fulfils the requirements for the CE approval. Approvals for UL and CSA
are available.
Further information on the approvals, certificates, and licenses for your device is
provided in Chapter 1.
Incorporation into the Communications Environment
This manual forms part of the supplied CD “Documentation and Drivers”.
For supplementary instructions on how to handle the software please refer to the
corresponding manuals (for example, Programming with STEP 7 Manual).

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Structure of the Manual
In Chapters 1 to 4 the manual contains the most important instructions for starting
up and using the SIMATIC Rack PC 840. Chapters 5 to 9 are reference sections
you will only require in special cases.
Important Information
This chapter provides information about safety instructions, certificates, directives
and approvals.
Introduction
Before using your device for the first time you should read Chapter 2 to obtain
more information about the SIMATIC Rack PC 840 components and their function.
Setting Up and Operation
The basic commissioning steps can be found in Chapter 3. Furthermore, you will
find instructions there on how to work with memory modules for automation
devices and further ports.
Expansion
Chapter 4 describes how to expand your SIMATIC Rack PC 840 (for example,
installation of memory expansions). Please observe the safety instructions.
Configuration
Modifications to the system hardware may make it necessary for you to adapt the
original hardware configuration. Chapter 5 tells how to proceed in this case.
Error/Fault Dignostics
Chapter 6 will tell you how to deal with simple faults that you can diagnose and, in
some cases, eliminate yourself.
Hardware-Informationen
Chapter 7 provides information on the system resources and connecting cables.
SCSI Controller
Chapter 8 provides the procedure for setting SCSI addresses and connecting SCSI
devices.
Reinstallation of the Software
Chapter 9 shows how to proceed in case you have to reinstall software.
ESD Guidelines
The guidelines for handling electrostatic sensitive devices in Chapter A are of
particular importance for service and maintenance engineers who install
expansions or carry out error analysis with the SIMATIC Rack PC 840.
Technical Specifications
Appendix B lists the valid technical specifications for your device. Detailed
information on how your Rack PC 840 is equipped can also be found in the BIOS
message (Summary Screen) when your PC is booting up.

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Retrofit Notes
Appendix C describes the permissible variants of equipment for Rack PC 840
including drives and processors and the resulting permissible operating conditions.
Glossary
The glossary explains important terms.
Alphabetical Index
The index will enable you to quickly find passages in the text pertaining to
important keywords.
Conventions
The abbreviation Rack PC oder device is also used within this manual for the
product designation SIMATIC Rack PC 840.
Further Support
If you have questions related to the use of the products which are not answered in
this manual, please consult your Siemens representative in your local agency.
http://www.ad.siemens.de/partner
Training Center
Siemens offers a number of training courses to familiarize you with the SIMATIC
S7 automation system. Please contact your regional training center or our central
training center in D 90327 Nuremberg, Germany for details:
Telephone: [phone]
http://www.sitrain.com/
SIMATIC Documentation on the Internet
You will find the documentation on the internet at:
http://www.ad.siemens.de/support
Use the Knowledge Manager to find the documentation you need quickly. If you
have any questions or suggestions concerning the documentation you can use the
”Documentation” conference in the internet forum.

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Automation an Drives, Service & Support
Available worldwide, around the clock:
Johnson City
Nuremberg
Singapore
SIMATIC Basic Hotline
Worldwide (Nuremberg)
Technical Support
Worldwide (Nuremberg)
Technical Support
(Free Contact)
Local time: Mo.–Fr. 7:00 to 17:00
Phone: [phone]
Fax: [phone]
E-mail: techsupport@
ad.siemens.de
GMT: +1:00
(charged, only with
SIMATIC Card)
Local time: Mo.–Fr. 0:00 to 24:00
Phone: [phone]
Fax: [phone]
GMT: +01:00
Europe / Africa (Nuremberg)
Authorization
America (Johnson City)
Technical Support and
Authorization
Asia / Australia (Singapore)
Technical Support and
Authorization
Local time: Mo.–Fr. 7:00 to 17:00
Phone: [phone]
Fax: [phone]
E-mail: authorization@
nbgm.siemens.de
GMT: +1:00
Local time: Mo.–Fr. 8:00 to 19:00
Phone: [phone]
Fax: [phone]
E-mail: simatic.hotline@
sea.siemens.com
GMT: –5:00
Local time: Mo.–Fr. 8:30 to 17:30
Phone: [phone]
Fax: [phone]
E-mail: simatic.hotline@
sae.siemens.com.sg
GMT: +8:00
German and English are spoken on all the SIMATIC hotlines, French, Italian and Spanish are also spoken on the
authorization hotline.

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Service & Support on the Internet
In addition to our documentation, we offer our Know-how online on the internet at:
http://www.ad.siemens.de/support
where you will find the following:
Current Product Information leaflets, FAQs (Frequently Asked Questions),
Downloads, Tips and Tricks.
A newsletter giving you the most up-to-date information on our products.
The Knowledge Manager helps you find the documents you need.
Users and specialists from all over the world share information in the forum.
Your local customer service representative for Automation & Drives in our
customer service representative data bank.
Information on field service, repairs, spare parts and more under ”Services”.

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Contents
Preface iii. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1 Important Information 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1 Safety Instructions 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 Certificates, Directives and Declarations 1-5. . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.3 Certification for the USA, Canada and Autralia 1-6. . . . . . . . . . . . . . . . . . . . . .
1.4 Transport 1-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 Welcome to the SIMATIC Rack PC 840 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1 Front View with Closed Front Door 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2 Front View with Opened Front Door 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3 Side View 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.4 Rear View 2-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.5 Drives 2-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.5.1 Disk Drive 2-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.5.2 Hard Disk Drive 2-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.5.3 CD ROM Drive 2-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.5.4 CD RW Drive 2-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.6 Backup Battery 2-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Setting Up and Operating the SIMATIC Rack PC 840 3-1. . . . . . . . . . . . . . . . . . . . . .
3.1 Unpacking and Checking the Scope of Delivery 3-2. . . . . . . . . . . . . . . . . . . . .
3.2 Installing the SIMATIC Rack PC 840 3-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3 Preparing for Operation 3-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4 Connecting Peripheral Units 3-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5 Connecting the SIMATIC Rack PC 840 to Other SIMATIC S5 Devices 3-13. .
3.6 Connecting the SIMATIC Rack PC 840 to a SIMATIC S7 Network
(PROFIBUS/MPI) 3-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.7 Networking the SIMATIC Rack PC 840 with Other Stations on
PROFIBUS 3-18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.8 Ethernet (RJ45 Ethernet Port) 3-18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.9 Connection under Windows 3-18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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4 SIMATIC Rack PC 840 Expansions 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.1 Opening the Unit 4-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.1.1 Prerequisites 4-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.1.2 Opening the SIMATIC Rack PC 840 4-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.1.3 Components Visible after Opening the Unit 4-4. . . . . . . . . . . . . . . . . . . . . . . . .
4.1.4 The Motherboard 4-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.2 Installing Memory Expansion Submodules 4-7. . . . . . . . . . . . . . . . . . . . . . . . . .
4.3 Replacing the Backup Battery 4-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.4 Installation of Expansion Cards 4-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.4.1 Removal and Installation of the Device for Holding Down the Modules 4-12. .
4.4.2 Removal and Installation of an Expansion Module 4-13. . . . . . . . . . . . . . . . . . .
4.5 Removal and Installation of Drives 4-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.5.1 Removal and Installation of the Front Drive Holder 4-14. . . . . . . . . . . . . . . . . . .
4.5.2 Removal and Installation of the Rear Drive Holder 4-15. . . . . . . . . . . . . . . . . . .
4.5.3 Removal and Installation of the Hard Disk Drive 4-15. . . . . . . . . . . . . . . . . . . . .
4.5.4 Removal and Installation of the Floppy/CD ROM Drive 4-16. . . . . . . . . . . . . . .
4.6 Removal and Installation of the Power Supply Unit 4-17. . . . . . . . . . . . . . . . . . .
4.7 Removal and Installation of the Bus Board 4-18. . . . . . . . . . . . . . . . . . . . . . . . . .
4.8 Removal and Installation of the Motherboard 4-19. . . . . . . . . . . . . . . . . . . . . . . .
4.9 Removal and Installation of the Device Fan 4-20. . . . . . . . . . . . . . . . . . . . . . . . .
4.10 Processor Change 4-21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.11 Reset Button 4-22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 Configuring the SIMATIC Rack PC 840 5-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.1 Changing the Device Configuration with BIOS SETUP 5-2. . . . . . . . . . . . . . . .
5.2 The Main Menu 5-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.3 The Advanced Menu 5-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.4 The Security Menu 5-18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.5 The Power Menu 5-20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.6 The Boot Sequence Menu 5-22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.7 The Version Menu 5-24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.8 The Exit Menu 5-25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.9 Default Setup Settings 5-26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6 Error Diagnosis 6-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.1 Problems When Using Modules from Other Manufacturers 6-2. . . . . . . . . . . .
6.2 The Monitor Remains Dark 6-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.3 No Mouse Pointer Appears on the Screen 6-3. . . . . . . . . . . . . . . . . . . . . . . . . .
6.4 The Clock Time and/or the Date in your PC Is Incorrect 6-4. . . . . . . . . . . . . .
6.5 USB-Device does not Function 6-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.6 An Error Message Appears on the Screen 6-5. . . . . . . . . . . . . . . . . . . . . . . . . .
6.7 Self-Test of the SIMATIC Rack PC 840 before Booting 6-7. . . . . . . . . . . . . . .

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7 Hardware Information 7-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1 Current Requirement of the Components (Maximum Values) 7-2. . . . . . . . . .
7.2 Overview of the Components and Ports 7-3. . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.3 System Resources 7-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.4 Monitoring Functions 7-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.4.1 Overview 7-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.4.2 Signals on the Front Interface 7-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.4.3 Temperature Monitoring/Indication 7-6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.4.4 Watchdog (WD) 7-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.4.5 Fan Monitoring 7-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.5 Ports 7-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.5.1 External Ports 7-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.5.2 Assignment of the Front Port on the Motherboard 7-18. . . . . . . . . . . . . . . . . . . .
7.5.3 Assignment of the Internal Ports on the Motherboard 7-19. . . . . . . . . . . . . . . . .
7.6 Bus Board 7-26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.6.1 Design and Mode of Operation 7-26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.6.2 Port for Motherboard 7-27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.7 Operator Panel 7-32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.8 AC Power Supply 7-34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.9 DC Power Supply 7-35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.10 Connecting Cables 7-36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8 Controller 8-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.1 SCSI Controller 8-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.1.1 SCSI Setup 8-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.1.2 Meaning of the Setup Parameters 8-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.1.3 Connecting Other SCSI Devices 8-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.1.4 Terminating the AHA-2940 Ultra Wide 8-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.1.5 Terminating SCSI Devices 8-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.1.6 SCSI Cables 8-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.1.7 Connecting External SCSI Devices 8-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.1.8 Troubleshooting on the SCSI Controller 8-17. . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.2 Raid Controller 8-19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9 Reinstallation of the Software 9-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.1 Restoring the Hard Disk 9-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.1.1 Creating Partitions under Microsoft Windows Me 9-2. . . . . . . . . . . . . . . . . . . .
9.1.2 Creating Partitions under Windows 2000 9-3. . . . . . . . . . . . . . . . . . . . . . . . . . .
9.1.3 Creating Partitions under Windows NT 9-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.2 Installing the Windows Operating System 9-6. . . . . . . . . . . . . . . . . . . . . . . . . . .
9.2.1 Installing the Recovery CD for Microsoft Windows NT 9-6. . . . . . . . . . . . . . . .
9.2.2 Installing the Microsoft Windows Me Operating System 9-7. . . . . . . . . . . . . . .
9.2.3 Installing the Recovery CD for Microsoft Windows Me 9-8. . . . . . . . . . . . . . . .
9.2.4 Installing the Recovery CD for Microsoft Windows 2000 9-9. . . . . . . . . . . . . .
9.3 Installing Drivers and Software 9-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.4 Installing the Raid Controller Software 9-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.5 Installating the Burner Software 9-12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Contents
xii SIMATIC Rack PC 840 Manual
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A Guidelines for Handling Electrostatic Sensitive Devices (ESD) A-1. . . . . . . . . . . .
A.1 What Does ESD Mean? A-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A.2 Electrostatic Charging A-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A.3 Basic Protective Measures against Discharge of Static Electricity A-4. . . . . .
B Technical Specifications B-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C Retrofit Notes C-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Glossary Glossary-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Index Index-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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Important Information
1.1 Safety Instructions
!Caution
The safety instructions given on the reverse of the title page of this manual must
be observed. Before expanding your Rack PC refer to Chapter 4 and read the
relevant safety instructions.
This device corresponds to the relevant safety measures according to IEC, EN,
VDE, UL, and CSA. If you have questions about the permissibility of the installation
in the designated environment, please contact our service representative.
Installation
Condensation can occur if the device is transported from a cold environment into
the operating area. The device must be dry prior to startup. You must allow for an
acclimatization time of at least twelve hours.
Please observe the notes on ambient conditions in Appendix B Technical
Specifications and the installation notes in Section 3.2 of this manual when
installing and operating the device. The device is to be installed so that there is no
danger of it falling or of causing damage to itself or others.
Be sure the fan ventilation slots are open so that a sufficient amount of air can be
drawn in to cool the housing interior.
1

Important Information
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Power Connection
Install the cables so that no one can step on them or trip over them. When you
connect the device, adhere to the relevant instructions in Chapter 2 of this manual.
Do not connect or disconnect power supply cables and data transmission lines
during thunderstorms.
In emergency situations (for example, damaged housing, damaged operator
elements, a damaged power supply cable, ingress of liquids or foreign particles),
switch off the device. Disconnect the power plug and inform the responsible
service personnel.
The Rack PC must be switched off when you connect or disconnect peripheral
devices (keyboard, mouse, printer, etc.). You can damage the PC if you do not
adhere to these instructions.
Notes for Devices with AC Power Supply
The device is intended for service in grounded electricity supply systems
(TN systems to VDE 0100, part 300, or IEC 364-3).
Service in non-grounded or impedance-grounded supply systems (IT systems) is
not intended.
The power cord should meet the respective local safety requirements.
Check whether the device’s set supply voltage is the same as the local supply
voltage.
This device is equipped with a safety-tested power supply cable. You may connect
this device only to a grounding outlet with a grounding contact.
Make certain that the socket outlet on the device or the grounding contact for the
building wiring system is freely accessible and as near to the device as possible.
The mains switch does not separate the device from the power system. To
establish a complete power separation, you must disconnect the power plug (inlet
connector on the back of the device). This location must be accessible. A central
isolating switch must be present for cabinet mounting.
Notes for Devices with DC Power Supply
The device does not fulfil the power supply connection requirements for a fire
enclosure to EN60950; therefore the mounting must meet the requirements of fire
protection enclosures in this area.
!Warning
Only connect the device to 24V DC power supply systems which meet the
requirements of a safe extra-low voltage (SELV); in addition, a protective
conductor must be connected.
The cable cross section has to be adapted to the short circuit current of the 24V
DC power supply unit so that the cable does not cause damages in the event of a
short circuit. Cables with a cross section of a maximum of up to 5 mm2can be
connected.

Important Information
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Country-Specific Information
For the United States and Canada:
In the United States and Canada USA, a CSA or UL-listed power supply cable
must be used.
The male plug is a 5-15 style.
For operation with 120 V:
Use a UL Listed, CSA Labelles Cord Set, consisting of a min. 18 AWG. Type SVT
or STJ three conductor flexible cord, max. 4.5 m (15 feet) in length and a parallel
blade grounding type attachment plug rated 15 A, min 125 V.
For operation with 240 V:
Use a UL Listed, CSA Labelled Cord Set, consisting od a min. 18 AWG. Type SVT
or SJT three conductor flexible cord, max. 4.5 m (15 feet) in length and a tandem
blade grounding type attachment plug, rated 15 A, 250 V.
For operation with 230 V (outside of USA and Canada)
Use a Cord Set consisting of a min 18 AWG cord and grounding type attachment
plug rated 15 A, 250 V. The cord set should have the approviate safety approvals
for the country in which the equipment will be installed and marked.
Repairs
Only authorized personnel are permitted to repair the Rack PC.
!Warning
Unauthorized opening and improper repairs on the device can result in significant
danger to the user.
Before you open the device, first switch it off and then disconnect the power plug.
Install only system expansion devices provided for this computer. If you install
other expansion devices, you can damage the system or violate the safety
requirements and regulations for radio interference suppression. Contact your
technical support team or where you purchased your PC to find out which system
expansion devices may safely be installed.
If you install or exchange system expansions and damage your Rack PC, the
warranty becomes void.
The power supply may only be dismantled or exchanged by authorized technical
personnel.

Important Information
1-4 SIMATIC Rack PC 840 Manual
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Battery
There is a battery in this device on the motherboard. Batteries may only be
exchanged by technical personnel.
Observe the local regulations on disposal of special waste when disposing of dead
batteries.
!Caution
There is the danger of an explosion, if the battery is not exchanged as directed.
Replace only with the same type or an equivalent type recommended by the
manufacturer. Dispose of used batteries in accordance with the legal instructions
of your area.
Notes on Inserting and Removing Modules (ESG Guidelines)
Modules containing electrostatically sensitive devices (ESDs) can be identified by
the following label:
Please observe and carefully follow the guidelines mentioned below when handling
modules equipped with electrostatically sensitive devices:
Always discharge your body before handling modules equipped with ESDs (for
example, by touching a grounded object).
Devices and tools must be free of static electricity.
Always pull the power plug and disconnect the battery before connecting or
disconnecting modules (containing ESDs).
Touch modules fitted with ESDs by their edges only.
Never touch wiring posts or printed conductors on modules containg ESDs.

Important Information
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1.2 Certificates, Directives and Declarations
Notes on the CE Symbol
The following applies to the SIMATIC product described in this manual:
EMC Directive
This product fulfils the requirements for the EC directive 89/336/EEC on
“electromagnetic compatibility” and the following fields of application apply
according to this CE symbol:
Field of Application Requirement For
Emitted Interference Noise Immunity
Industry EN 50081-2: 1993 EN 50082-2: 1995
The devices with AC power supply meet the norms of the the EN 61000-3-2:1995
(harmonic currents) and EN 61000-3-3:1995 (voltage fluctuation and flicker).
Caution
This is a class A electronic device. This device may cause interference in
residential areas. In this case the user may be asked to take the necessary
precautions.
Low Voltage Directive
The devices with AC power supply complies with the requirements of the EU
Directive 73/23/EEC “Low-Voltage Directive.” Conformance with this standard has
been verified according to EN 60950.
Declaration of Conformity
The EC declarations of conformity and the documentation relating to this are
available to the authorities concerned, according to the above EC directive, from:
Siemens AG
Bereich Automation & Drives
A&D AS RD 4
Postfach 1963
D-92209 Amberg
Tel.: [phone]
Fax: [phone]
Observing the Setup Guidelines
The setup guidelines and safety instructions given in this electronic manual must
be observed on startup and during operation.

Important Information
1-6 SIMATIC Rack PC 840 Manual
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Connecting Peripherals
The requirements regarding noise immunity (EN50082-2:1995) are met when you
connect a peripheral suitable for an industrial environment. Peripheral devices are
only be connected via shielded cables.
ISO 9001 Certificate
The quality assurance system for the whole product process (development,
production, and marketing) fulfills the requirements of ISO 9001 (corresponds to
EN29001: 1987).
This has been certified by the German society for the certification of quality
management systems (DQS).
EQĆNet certificate no.: 1323Ć01
Software License Agreement
The Rack PC is shipped with the software already installed. Please observe the
relevant license agreements.
1.3 Certification for the USA, Canada and Autralia
Security
One of the following markings on a device is indicative of the corresponding
approval:
Underwriters Laboratories (UL) to the UL 1950 Standard (I.T.E)
or to the UL508 (IND.CONT.EQ)
Underwriters Laboratories (UL) to the Canadian Standard C22.2 No. 950
(I.T.E) or to the C22.2 No. 142 (IND.CONT.EQ)
Underwriters Laboratories (UL) to Standard UL 1950, Report E11 5352 and to
the Canadian Standard C 22.2 No.950 (I.T.E)
or to the UL508 and C22.2 No. 142
(
IND.CONT.EQ
)
or to the UL508 and C22
.
2 No
.
142 (IND
.
CONT
.
EQ)
UL-Recognition-Mark
Canadian Standard Association (CSA) to standard C22.2. No. 950
(LR 81690) or to C22.2 No. 142 (LR 63533)
Canadian Standard Association (CSA) to the American Standard UL 1950
(LR 81690) or to the UL 508 (LR 63533)
C
NRTL
C US

Important Information
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EMV
USA
Federal Communications Commission
Radio Frequency Interference Statement
This equipment has been tested and found to comply with the limits for a Class A digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference when the equipment is operated in a
commercial environment. This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in accordance with the instruction manual,
may cause harmful interference to radio communications. Operation of this equipment in a
residential area is likely to cause harmful interference in which case the user will be
required to correct the interference at his own expense.
Shielded Cables
Shielded cables must be used with this equipment to maintain compliance with FCC regu-
lations.
Modifications
Changes or modifications not expressly approved by the manufacturer could void the
user’s authority to operate the equipment.
Conditions of Operations
This device complies with Part 15 of the FCC Rules. Operation is subject to the following
two conditions: (1) this device may not cause harmful interference, and (2) this device must
accept any interference received, including interference that may cause undesired
operation.
Canada
(for devices with DC power supply)
Canadian Notice
This Class A digital apparatus complies with Canadian ICES-003.
Avis Canadien
Cet appareil numérique de la classe A est conforme à la norme NMB-003 du Canada.
(for devices with AC power supply)
Canadian Notice
This Class B digital apparatus complies with Canadian ICES-003.
Avis Canadien
Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada.
Australia
(for devices with AC power supply)
This product meets the requirements of the AS/NZS 3548 Norm.

Important Information
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1.4 Transport
Transporting
Despite the fact that the Rack PC is of rugged design, its internal components are
sensitive to severe vibrations or shock. You must therefore protect the PC from
severe mechanical stress when transporting it.
Use the original packing material if you have to ship the Rack PC from one
location to another.
Caution
Risk of damage!
When transporting the PC in cold weather, when it may be submitted to extreme
variations in temperature, make sure that there is no moisture (condensation) on
or in the PC.
The PC must be allowed to reach room temperature slowly before you switch it on.
If condensation has formed, you should wait approximately 12 hours before
switching on the PC.