Siemens SIMATIC S7-400H User manual

Preface, Contents
Fault-Tolerant Programmable Logic
Controllers 1
S7-400H Installation Options 2
Getting Started 3
Installation of a CPU 41x-H 4
System and Operating Modes of the
S7-400H 5
Linking and Synchronizing 6
Using I/O on the S7-400H 7
Communication Functions 8
Configuring with STEP 7 9
Failure and Replacement of
Components During Operation 10
Modifying the System During Operation 11
Synchronization module 12
Technical Specifications 13
Appendices
Characteristic Values of Redundant
Programmable Logic Controllers A
Single Operation B
Converting from S5-H to S7-400H C
Differences Between Fault-Tolerant
Systems and Standard Systems D
Function Modules and Communication
Processors Used on the S7-400H E
Connection Examples for Redundant I/O F
Glossary, Index
Edition 07/2003
A5E00068197-07
Automation System S7-400H
Fault-tolerant Systems
Manual
SIMATIC
This manual has the order number:
6ES7988-8HA10-8BA0

Index-2 AutomationSystem S7-400HTitel 2
A5E00068197-07
!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 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.
Disclaimof LiabilityCopyright WSiemens AG 1998-2003 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
Bereich Automation and Drives
Geschaeftsgebiet Industrial Automation Systems
Postfach 4848, D- 90327 Nuernberg SiemensAG 1998-2003
Technical data subject to change.
Siemens Aktiengesellschaft 6ES7988-8HA10-8BA0

iii
Automation System S7-400H Fault-tolerant Systems
A5E00068197-07
Preface
Purpose of the manual
The present manual is intended for persons involved in the areas of configuration,
commissioning and servicing of programmable logic control systems.
To help you get familiar with the product, we recommend that you start with the
example in Chapter 3. It shows you an easy method of getting started on the
subject of fault-tolerant systems.
Basic knowledge required
In order to understand the manual, you will need to be familiar with the general
principles of automation technology.
Knowledge of S7 programs is also a prerequisite; you can read more about S7
programs in the Programming with STEP 7 manual. As you need the STEP 7
standard software while you are configuring, you should also be familiar with
running the standard software, as explained in the STEP 7 User Manual.
Target Group
This manual is aimed at people with the required qualifications to commission,
operate and maintain the products described.
Validity of the manual
The manual is relevant to the following components:
•CPU 414-4H as of firmware version V3.1
•CPU 417-4H as of firmware version V3.1
•Optional package “S7 H Systems” beginning with Version 5.2

Preface
iv AutomationSystem S7-400H Fault-tolerant Systems
A5E00068197-07
Changes compared to the previous version
The current version of the ”Redundant Systems” manual contains the following
changes compared with the previous version:
•We have expanded the spectrum of redundant I/O modules.
Note: You can identify the previous version of the ”Redundant Systems” manual by
the number on the footer: A5E00068197-06.
The current number is : A5E00068197-07.
Certification
The SIMATIC S7-400 product range has the following certificates:
•Underwriters Laboratories, Inc.: UL 508 (Industrial Control Equipment)
•Canadian Standards Association: CSA C22.2 Number 142 (Process Control
Equipment)
•Factory Mutual Research: Approval Standard Class Number 3611.
Detailed information about the certifications and standards is available in the
reference manual “Automation System S7-400, Module Specifications” in
Chapter 1.1, Standards and Certifications.
CE Labeling
The SIMATIC S7-400 product range complies with the requirements and protection
objectives of the following EU directives:
•EC low voltage directive 73/23/EEC
•EC electromagnetic compatibility directive 89/336/EEC
C-Tick Mark
The SIMATIC S7-400 product range complies with the requirements of the
AS/NZS 2064 standard (Australia and New Zealand).
Standards
The SIMATIC S7-400 product range complies with the requirements and criteria of
the IEC 61131-2.
Place of this documentation in the information environment
This manual can be order separately under the order number
6ES7988-8HA10-8BA0. It is also available in electronic version on the product CD
“H Options Package”.

Preface
v
AutomationSystem S7-400H Fault-tolerant Systems
A5E00068197-07
Online Help
In addition to the manual, detailed support on how to use the software is provided
by the online Help system integrated in the software.
The Help system can be accessed using a number of interfaces:
•The Help menu contains a number of commands: Contents opens the Help
index. You will find help on fault-tolerant systems at Call Help on options
packages, configuring fault-tolerant systems.
•How to Use Help provides detailed instructions on how to use the online help
system.
•Context-sensitive Help provides information on the current context - for
example, on an open dialog box or an active window. It is accessed by means
of the “Help” button or F1.
•Another form of context-sensitive Help is the status bar. A brief explanation of
each menu command is displayed here when you place the mouse pointer on a
command.
•A brief explanation of the toolbar buttons is also shown when the mouse pointer
comes to rest for a short time on the buttons.
If you would like to read information from online Help in printed form, you can print
individual topics, books or the entire Help.
Finding Your Way
To help you find special information quickly, the manual contains the following
access aids:
•At the start of the manual you will find a complete table of contents and a list of
the diagrams and tables that appear in the manual.
•An overview of the contents of each section is provided in the left column on
each page of each chapter.
•You will find a glossary in the appendix at the end of the manual. The glossary
contains definitions of the main technical terms used in the manual.
•At the end of the manual you will find a comprehensive index which gives you
rapid access to the information you need.

Preface
vi AutomationSystem S7-400H Fault-tolerant Systems
A5E00068197-07
Note
You require the following manuals and manual packages in order to program and
commission an S7-400:
Manual/
Manual Package Contents
Standard Software
for S7 and M7
STEP 7 Basic
Information
•Installing and starting up STEP 7 on a programming device / PC
•Working with STEP 7 with the following contents:
Managing projects and files
Configuring and assigning parameters to the S7-400 configuration
Assigning symbolic names for user programs
Creating and testing a user program in STL/LAD
Creating data blocks
Configuring the communication between two or more CPUs
Loading, storing and deleting user programs in the CPU / programming device
Monitoring and controlling user programs
Monitoring and controlling the CPU
Monitoring and controlling the CPU
•Guide for efficiently implementing the programming task with the programming
device / PC and STEP 7
•How the CPUs work (for example, memory concept, access to inputs and
outputs, addressing, blocks, data management)
•Description of STEP 7 data management
•Using data types of STEP 7
•Using linear and structured programming
•Using block call instructions
•Using the debug and diagnostics functions of the CPUs in the user program
(for example, error OBs, status word)
STEP 7 Reference
Information
Statement List (STL
)
for S7-300 and
S7-400
Ladder Logic (LAD)
for S7-300 and
•Basic procedure for working with STL, LAD, or FBD (for example, structure of
STL, LAD, or FBD, number formats, syntax)
•Description of all instructions in STEP 7 (with program examples)
•Description of the various addressing methods in STEP 7 (with examples)
•Description of all functions integrated in the CPUs
•Description of the internal registers in the CPU
for S7-300 and
S7-400
Function Block
Diagram (FBD) for
S7-300 and S7-400
System and
Standard Functions
Description of the internal registers in the CPU
•Description of all system functions integrated in the CPUs
•Description of all organization blocks integrated in the CPUs
Manual
PG 7xx
•Description of the programming device hardware
•Connecting a programming device to various devices
•Starting up a programming device

Preface
vii
AutomationSystem S7-400H Fault-tolerant Systems
A5E00068197-07
Recycling and Disposal
The S7-400 H can be recycled due to the use of non-toxic materials in its
construction. For environmentally compatible recycling and disposal of your old
device in accordance with the current state of the art, please contact a certified
recycling company for electronic component waste.
Further Support
If you have any technical questions, please get in touch with your Siemens
representative or agent responsible.
http://www.ad.siemens.com/automation/partner
H/F Competence Center
The HF Competence Center in Nuremberg offers a special workshop on the
subject redundant automation system SIMATIC S7. In addition, the H/F
Competence Center offers you on-site assistance during configuration,
commissioning or in the event of problems.
Phone: [phone]
Fax: [phone]
Training Centers
We offer a number of courses to help you become familiar with the SIMATIC S7
programmable logic controller. Please contact your regional training center or our
central training center in D 90327 Nuremberg, Germany for details:
Phone: [phone].
Internet: http://www.sitrain.com

Preface
viii AutomationSystem S7-400H Fault-tolerant Systems
A5E00068197-07
A&D Technical Support
Worldwide, available 24 hours a day:
Johnson City
Nuernberg
Beijing
Technical Support
Worldwide (Nuernberg)
Technical Support
24 hours a day, 365 days a year
Phone: [phone]
Fax: [phone]
E-Mail: adsupport@
siemens.com
GMT: +1:00
Europe / Africa (Nuernberg)
Authorization
Local time: Mon.-Fri. 7:00 to 17:00
Phone: [phone]
Fax: [phone]
E-Mail: adautorisierung@
siemens.com
GMT: +1:00
United States (Johnson City)
Technical Support and
Authorization
Local time: Mon.-Fri. 8:00 to 17:00
Phone: [phone]
Fax: [phone]
E-Mail: simatic.hotline@
sea.siemens.com
GMT: –5:00
Asia / Australia (Beijing)
Technical Support and
Authorization
Local time: Mon.-Fri. 8:30 to 17:30
Phone: [phone]
Fax: [phone]
E-Mail: adsupport.asia@
siemens.com
GMT: +8:00
The languages of the SIMATIC Hotlines and the authorization hotline are generally German and English.

Preface
ix
Automation System S7-400H Fault-tolerant Systems
A5E00068197-07
Service & Support on the Internet
In addition to our documentation, we offer our Know-how online on the internet at:
http://www.siemens.com/automation/service&support
where you will find the following:
•The newsletter, which constantly provides you with up–to–date information on
your products.
•The right documents via our Search function in Service & Support.
•A forum, where users and experts from all over the world exchange their
experiences.
•Your local representative for Automation & Drives via our representatives
database.
•Information on field service, repairs, spare parts and more under “Services”.

Preface
xAutomationSystem S7-400H Fault-tolerant Systems
A5E00068197-07