Siemens SIMATIC S7-GRAPH User manual


Important Notes,
Contents
Product Overview
Installation and Authorization
Designing a Sequential
Control System based on the
Example of a Drill
Working with S7-Graph
Creating a Project
Programming the Structure of
the Sequencer
Programming Actions and
Conditions
Saving and Compiling
Assigning Parameters to and
Calling the S7-Graph FB
Downloading the S7-Graph
FB and Instance DB
Monitoring and Testing the
Sequential Control System
Printing the Sequencer
Overview of All Actions
Notes on Configuration
Instance DB
SIMATIC
S7-GRAPH for S7-300/400
Programming Sequential
Control Systems
Manual
This manual has the order number:
6ES7 811-0CC03-8BA0
05/99
Edition 01 Glossary
Index
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15

Safety Guidelines
This manual contains notices which you should observe to ensure your own personal safety, as well as
to protect the product and connected equipment. These notices are highlighted in the manual by a
warning triangle and are marked as follows according to the level of danger:
!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 or property damage can result if proper precautions are not taken.
Note
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 descriptions, 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.
Some of other designations used in these documents are also registered trademarks; the owner's rights
may be violated if they are used by third parties for their own purposes.
Copyright © Siemens AG 1999 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 Automatisierungs- und Antriebstechnik
Geschaeftsgebiet Industrie-Automatisierungssysteme
Postfach 4848, D- 90327 Nuernberg
Disclaimer of Liability
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.
©Siemens AG 1999
Technical data subject to change.
Siemens Aktiengesellschaft 6ES 7811-0CC03-8BA0

S7-GRAPH for S7-300/400 Programming Sequential Control Systems
C79000-G7076-C526-01 iii
Important Notes
Purpose of the Manual
This manual supports you when creating user programs in the S7-Graph
programming language. It explains how to write programs and describes the
elements of a sequencer.
This manual applies to the S7-Graph V5.0 programming software package.
Audience and Requirements
This manual is intended for persons with the qualifications required for installation,
operation, and programming of the described software product.
They should be experienced in using computers or devices similar to PCs (for
example programming devices) under the Windows 95/98/ NT 4.0 operating
systems and should know the STEP 7 standard software and its documentation.
Manuals Purpose Order Number
STEP 7 Basic Information with
•Working with STEP 7 V5.0
Getting Started
•Programming with
STEP 7 V5.0
•Configuring Hardware and
Communication Connections
STEP 7 V5.0
•STEP 7 From S5 to S7
Converter Manual
Basic information for technical
personnel describing the methods
of implementing control tasks with
STEP 7 and the S7-300/400
programmable controllers.
6ES7810-0CC03-8BA0
STEP 7 Reference with
•Manuals LAD/FBD/STL for
S7-300 and 400
•System and Standard Functions for
S7-300 and 400
Provides reference information
and describes the programming
languages LAD, FBD and STL
and standard and system
functions extending the scope of
STEP 7 basic information.
As electronic manuals
part of the
STEP 7 software
package

Important Notes
S7-GRAPH for S7 300/400 Programming Sequential Control Systems
iv C79000-G7076-C526-01
Manual and Online Help
This manual is a reduced version of the online help. Online help contains more
detailed information, for example with step-by-step instructions. The manual and
online help have the same structure so that you can change from one to the other
without difficulty.
Using the Online Help
You can display the online help in the following ways:
•With the menu command Help > Help Topics.
•By activating context-sensitive help about the selected object with the menu
command Help > Context-Sensitive Help, with the F1 function key, or by
clicking the question mark in the toolbar.
•By displaying the Glossary for all STEP 7 applications with the Glossary button.
Please note that every STEP 7 application has its own contents and its own
context-sensitive help system.
References
References to other documentation are indicated by reference numbers in slashes
/.../. Based on these numbers, you can check the exact title in the References
section in the Appendix.
Remarks Form for Documentation
To help us to provide the best possible documentation for you and future S7-Graph
users, we need your support. If you have comments or suggestions relating to this
manual
or the online help, please complete the questionnaire at the end of the
manual and send it to the address shown. Please include your own personal rating
of the documentation.

Important Notes
S7-GRAPH for S7-300/400 Programming Sequential Control Systems
C79000-G7076-C526-01 v
SIMATIC Training Center
Courses are available to help you become familiar with the SIMATIC S7
automation system and programmable controllers. Please contact your regional
training center or the central training center in Nuremberg, Germany (90327).
Telephone: [phone].
Open round the clock, world-wide
Johnson City
Nuremberg
Singapur
SIMATIC Hotline
Nuremberg
SIMATIC BASIC Hotline Johnson City SIMATIC BASIC Hotline Singapore SIMATIC BASIC Hotline
Local time: Mo.-Fr. 7:00 to 17:00
Telephone: [phone]
Fax: [phone]
E-mail: simatic.support@
Nbgm.siemens.de
GMT: +1:00
Local time: Mo.-Fr. 7:00 to 17:00
Telephone: [phone]
Fax: [phone]
E-mail: simatic.hotline@
sea.siemens.com
GMT: -5:00
Local time: Mo.-Fr. 8:30 to 17:30
Telephone: [phone]
Fax: [phone]
E-mail: simatic@
singnet.com.sg
GMT: +8:00
Nuremberg
SIMATIC Authorization Hotline Nuremberg
SIMATIC Premium Hotline
Local time: Mo.-Fr. 7:00 to 17:00
Telephone: [phone]
Fax: [phone]
E-mail: authorization@
Nbgm.siemens.de
GMT: +1:00
(Calls charged, only with
SIMATIC Card)
Time: Mo.-Fr. 0:00 to 24:00
Telephone: [phone]
Fax: [phone]
GMT: +01:00

Important Notes
S7-GRAPH for S7 300/400 Programming Sequential Control Systems
vi C79000-G7076-C526-01
SIMATIC Customer Support Online Services
The SIMATIC Customer Support team provides you with comprehensive additional
information on SIMATIC products in its online services:
•You can obtain general current information:
•On the Internet at http://www.ad.siemens.de/simatic
•Current Product Information leaflets and downloads which you may find useful
for your product are available:
•On the Internet at http://www.ad.siemens.de/simatic-cs
•Using the
Bulletin Board System (BBS) in Nuremberg (
SIMATIC
Customer Support Mailbox)
number [phone].
To dial the mailbox, use a modem with up to V.34(28.8Kbps) with the following
parameter settings: 8, N, 1, ANSI, or dial via ISDN (x.75, 64 Kbps).

S7-GRAPH for S7-300/400 Programming Sequential Control Systems
C79000-G7076-C526-01 vii
Contents
Important Notes.....................................................................................................................iii
1 Product Overview .................................................................................................1-1
2 Installation and Authorization..............................................................................2-1
2.1 Authorization...........................................................................................................2-1
2.2 Installing the Authorization......................................................................................2-2
2.3 Upgrading the Authorization....................................................................................2-3
2.4 Uninstalling the Authorization..................................................................................2-4
2.5 Rules for Handling Authorizations............................................................................2-4
2.6 Installing S7-Graph .................................................................................................2-6
2.7 Uninstalling S7-Graph.............................................................................................2-9
3 Designing a Sequential Control System based on the Example of a Drill..........3-1
3.1 Technological Task and Functional Diagram ...........................................................3-3
3.2 Selecting the Structure of the Sequencer ................................................................3-4
3.3 Defining the System Signals....................................................................................3-6
3.4 Creating the Drill Project in the SIMATIC Manager..................................................3-7
3.5 Creating a Symbol Table.........................................................................................3-7
3.6 Creating an S7-Graph FB and Programming a Sequencer ......................................3-9
3.7 Programming Step Actions....................................................................................3-12
3.8 Programming Transitions......................................................................................3-12
3.9 Programming Monitoring Functions.......................................................................3-14
3.10 Specifying the Standard Function Block ................................................................3-15
3.11 Saving and Closing the Sequencer........................................................................3-15
3.12 Including the Sequencer in the STEP 7 Program...................................................3-16
3.13 Downloading the Program to the CPU and Testing the Sequencer........................3-18
3.14 Test Function: Control Sequencer.........................................................................3-19
3.15 Changing the Sequencer.......................................................................................3-20
4 Working with S7-Graph.........................................................................................4-1
4.1 Starting S7-Graph...................................................................................................4-1
4.2 The S7-Graph User Interface..................................................................................4-2
4.3 Settings for the Work Area ......................................................................................4-5
4.4 Customizing Display Level, Colors and Fonts..........................................................4-8
4.5 Tools for Editing the Sequencer ............................................................................4-12
4.5.1 Display and Position of the Toolbars .....................................................................4-12
4.5.2 Editing the Sequencer with the Toolbars ...............................................................4-13
4.5.3 Navigating in the Sequencer .................................................................................4-13

Contents
S7-GRAPH forS7300/400 ProgrammingSequential Control Systems
viii C79000-G7076-C526-01
5Creating aProject.................................................................................................5-1
5.1Creating the Project in the SIMATICManager.........................................................5-1
5.2S7-Graph FB or S7-Graph SourceFile?..................................................................5-2
5.3S7-Graph FB..........................................................................................................5-2
5.4S7-Graph Source File.............................................................................................5-3
5.5Opening an S7-Graph FB or anS7-Graph Source File............................................5-4
6Programming theStructure ofthe Sequencer.....................................................6-1
6.1Sequencer - Principle..............................................................................................6-2
6.2Structuresof aSequencer.......................................................................................6-3
6.3Rules for the Structureof aSequencer....................................................................6-4
6.4Elements of aSequencer........................................................................................6-4
6.5Step-Transition Pair and Initial Step........................................................................6-5
6.6 Jump......................................................................................................................6-6
6.7 AlternativeBranch..................................................................................................6-7
6.8Simultaneous Branch..............................................................................................6-8
6.9 BranchStop............................................................................................................6-9
6.10 New Sequencer......................................................................................................6-9
6.11 Permanent Instructions.........................................................................................6-10
6.12Block Comment....................................................................................................6-11
7Programming Actions and Conditions................................................................7-1
7.1Actions...................................................................................................................7-2
7.2Standard Actions....................................................................................................7-3
7.3Event-Dependent Actions.......................................................................................7-4
7.4Counters, Timers and Arithmetic in Actions.............................................................7-7
7.5Conditions.............................................................................................................7-14
7.6Ladder Logic Elements for Programming Conditions.............................................7-17
7.7Logic Operations with Ladder Logic Elements.......................................................7-20
7.8FBD ElementsforProgramming Conditions..........................................................7-21
7.9S7-Graph Addresses in Conditions.......................................................................7-24
7.10 Supervision Errors and Acknowledgment..............................................................7-25
7.11 Comment,Extended Name, Number, Name.........................................................7-27
7.12 Programming with Symbolic Addresses................................................................7-28
7.13 Editing Variables...................................................................................................7-29
8Savingand Compiling..........................................................................................8-1
8.1Saving and Compiling.............................................................................................8-1
8.2Rules for Saving an S7-Graph FB...........................................................................8-2
8.3Rules for Saving an S7-Graph Source File..............................................................8-2
8.4Settings forSaving and Compiling...........................................................................8-3
8.4.1Settings in the “General" Tab Page.........................................................................8-3
8.4.2Settings in the "Compile/Save" Tab Page................................................................8-5
8.4.3Settings in the "Messages" Tab Page......................................................................8-7
8.5 Saving....................................................................................................................8-9
8.6Compiling..............................................................................................................8-10

Contents
S7-GRAPH for S7-300/400 Programming Sequential Control Systems
C79000-G7076-C526-01 ix
9 Assigning Parameters to and Calling the S7-Graph FB......................................9-1
9.1 Calling the S7-Graph FB in the S7 Program............................................................9-1
9.2 Calling the S7-Graph FB.........................................................................................9-1
9.3 Selecting an FB Parameter Set...............................................................................9-2
9.4 Parameter Sets of the FB........................................................................................9-3
9.5 Input Parameters of the S7-Graph FB.....................................................................9-5
9.6 Output Parameters of the S7-Graph FB...................................................................9-8
9.7 The Modes of the Sequential Control System........................................................9-10
9.7.1 Automatic Mode (SW_AUTO) ...............................................................................9-11
9.7.2 Manual mode (SW_MAN) .....................................................................................9-12
9.7.3 Inching mode (SW_TAP).......................................................................................9-13
9.7.4 Automatic or Switch to next Mode (SW_TOP) .......................................................9-14
10 Downloading the S7-Graph FB and Instance DB...............................................10-1
10.1 Downloading blocks from the Programming Device to the CPU.............................10-1
10.2 Uploading Blocks from the CPU to the Programming Device.................................10-2
11 Monitoring and Testing the Sequential Control System...................................11-1
11.1 Monitoring and Test Functions in S7-Graph...........................................................11-2
11.1.1 Monitoring the Status Information..........................................................................11-2
11.1.2 Control Sequencer................................................................................................11-3
11.1.3 Synchronization ....................................................................................................11-4
11.2 Test Functions of STEP 7 .....................................................................................11-5
12 Printing the Sequencer.......................................................................................12-1
13 Overview of All Actions......................................................................................13-1
13.1 Standard Actions with and without Interlock...........................................................13-1
13.2 Event-Dependent Actions - with and without Interlock............................................13-3
13.3 Counters in Actions.............................................................................................13-13
13.4 Timers in Actions ................................................................................................13-18
13.5 Arithmetic in Actions............................................................................................13-23
14 Notes on Configuration ......................................................................................14-1
14.1 General Level Structure and Program Structure....................................................14-1
14.2 Points to Note about Programming Sequencers ....................................................14-8
14.3 Linking to Operator Control and Monitoring Systems...........................................14-12

Contents
S7-GRAPH for S7 300/400 Programming Sequential Control Systems
xC79000-G7076-C526-01
15 Instance DB......................................................................................................... 15-1
15.1 Settings for the Instance DB..................................................................................15-1
15.2 Assignment of Instance DB and S7-Graph FB.......................................................15-2
15.3 Automatic Creation of the Instance DB on Saving .................................................15-2
15.4 Creating the Instance DB Later.............................................................................15-3
15.5 Displaying and Printing the Content of the Instance DB.........................................15-3
15.6 Accessing the Instance DB ...................................................................................15-3
15.7 Structure of an Instance DB.................................................................................. 15-4
15.8 Outline of the Structure of the Instance DB............................................................15-4
15.9 FB parameters......................................................................................................15-4
15.10 The Transition Structure........................................................................................15-9
15.11 The Step Structure.............................................................................................. 15-11
15.12 Sequencer Status............................................................................................... 15-13
15.13 Internal Data Area............................................................................................... 15-19
Glossary..................................................................................................................Glossary-1
Index ........................................................................................................................Index-1

S7-GRAPH for S7-300/400 Programming Sequential Control Systems
C79000-G7076-C526-01 1-1
1 Product Overview
S7-Graph Programming Language
The S7-Graph programming language extends the range of functions of STEP 7 by
allowing you to program sequential control systems graphically.
With S7-Graph, you can configure and write programs to control sequential
processes with a SIMATIC programmable logic controller (PLC). The process is
divided into single steps with a clearly defined range of functions. The process
sequence is represented graphically and can be documented both as graphics and
text.
In the steps, you specify the actions to be executed. The progression from one step
to the next is controlled by transitions (step enabling conditions). The definitions,
interlocks and monitoring of the transitions are programmed using a subset of the
Ladder Logic (LAD) or FBD (Function Block Diagram) programming languages.
S7-Graph for the S7-300/400 complies with the sequential control language
"Sequential Function Chart" specified in the DIN EN 61131-3 (IEC 1131-3)
standard.

Product Overview
S7-GRAPH for S7 300/400 Programming Sequential Control Systems
1-2 C79000-G7076-C526-01
The Blocks of a Sequential Control System
A sequential control system controls the process in a fixed order dependent on
certain conditions.
The complexity of the sequential control system depends on the automation task.
However, even the simplest system requires at least the three following blocks:
•A STEP 7 block (1) in which the S7-Graph FB (function block) is called. This
block can be an organization block (OB), a function (FC), or another FB.
•An S7-Graph FB (2) that describes the individual subtasks and
interdependencies of the sequential control system. These subtasks (steps) and
interdependencies (transitions) can be organized in one or more sequencers.
•An instance DB (3) that contains data and parameters of the sequential control
system. The instance DB is assigned to the S7-Graph FB and can be created
automatically by the system.
OB/FB/FC
FC70/71/72
T2
T1
S2
S1
Comments for...
FB i
(1)
CALL FBi
,
DBi
INIT_SQ:=
(2) (3)
DB i

Product Overview
S7-GRAPH for S7-300/400 Programming Sequential Control Systems
C79000-G7076-C526-01 1-3
Section of a Sequencer with Steps and Transitions
You program sequencers in the S7-Graph FB. A sequencer consists of a sequence
of steps that are activated in a fixed order depending on transitions (step-enabling
conditions).
Motor Limit switch
S1
Step1
T1
Step1
Action
S2
Step2
Step2
Action
T2
Input1 Input2
Conditions
Action
Transition1
Transition2
Conditions

Product Overview
S7-GRAPH for S7 300/400 Programming Sequential Control Systems
1-4 C79000-G7076-C526-01
Procedure for Creating a Sequential Control System
By working through the tasks listed in the table below step by step, you will get to
know how to program a complete sequential control system.
Step Task
1 Practical introduction based on the example of a "drill"
2 Creating a project
3 Programming the structure of a sequencer
4Programming actions and conditions
5Saving and compiling
6 Parameter assignment and calling the S7-Graph FB
7 Downloading the S7-Graph FB and the instance DB
8Monitoring and testing the sequential control system

S7-GRAPH for S7-300/400 Programming Sequential Control Systems
C79000-G7076-C526-01 2-1
2 Installation and Authorization
2.1 Authorization
A product authorization is required to use the S7-Graph software package.
Software protected by this mechanism can only be used when the authorization
required by the program or software package is detected on the hard disk of the
programming device.
Different authorizations are necessary, for example for STEP 7 and for the optional
packages.
Authorization Diskette
To authorize the product, you require the copy-protected authorization diskette
shipped with the package. This contains the actual authorization. The "AuthorsW"
program required to display, install, and uninstall the authorization is on the same
CD-ROM as S7-Graph V5.0.
Number of Authorizations
The number of possible authorizations is determined by an authorization counter
on the authorization diskette. When you install an authorization, the counter is
decremented by 1. Once the counter reaches the value 0, there are no more
authorizations on the diskette.
Note
You receive a yellow authorization diskette for the STEP 7 standard software with a
corresponding authorization. You do not need an authorization for STEP 7 Mini.
With each optional software package, you receive a red authorization diskette
containing one authorization.
Note
Note the information in the README.WRI file and the rules below in "Rules for
Handling Authorizations". If you do not keep to the instructions in this file, you may
destroy the authorization.

Installation and Authorization
S7-GRAPH for S7 300/400 Programming Sequential Control Systems
2-2 C79000-G7076-C526-01
Loss of the Authorization...
You can lose an authorization, for example, due to a defect on the hard disk that
prevents you from uninstalling the authorization from the defective hard disk.
If you lose the authorization, you can use the emergency authorization. This is also
on the authorization diskette. The emergency authorization allows you to continue
to use the software for a restricted time. In this case, when you start S7-Graph, the
time until the authorization expires is displayed. Before this time expires, you
should obtain a replacement for the lost authorization from your Siemens distributor
or sales office.
Note
The restricted period of the emergency authorization begins from the moment you
install it even if you do not start S7-Graph. You cannot extend this period even by
transferring the authorization back to the diskette.
Installing AuthorsW
The "AuthorsW" program required to display, install, and uninstall the authorization
is on the same CD-ROM as S7-Graph V5.0. You can install this program on your
hard disk and start it there when you want to install and uninstall authorizations.
Note
The default location for the AuthorsW program is the AuthorsW folder and you can
start it from the taskbar (START > SIMATIC > AuthorsW > AuthorsW).
2.2 Installing the Authorization
Handling the Authorization During Installation
You should transfer the authorization when prompted by Setup when you install
S7-Graph for the first time. Follow the steps below:
1. Insert the authorization diskette when Setup asks you for it.
2. Then confirm the next prompt.
3. The authorization is transferred to a physical drive.

Installation and Authorization
S7-GRAPH for S7-300/400 Programming Sequential Control Systems
C79000-G7076-C526-01 2-3
Installing the Authorization Later
If you start the S7-Graph software and there is no authorization on your system, a
message to this effect is displayed. To install the authorization at a later point in
time:
1. insert the authorization diskette in your floppy disk drive, for example, drive A.
2. Start the "Authorsw.exe" program on the hard disk drive.
3. Select drive A:\. The authorizations on the authorization diskette are displayed.
4. Select the full authorization for S7-Graph (validity: unlimited).
5. Holding down the left mouse button, drag the selected authorization to the
destination drive. The authorization is transferred to the destination drive.
Note
The authorization is effective in Windows NT only when full access to both hard
disk "C:" and the source floppy drive is possible.
Recovering the Authorization
If you have a problem with your authorization (defective etc.), please contact the
hotline. If a problem occurs, it may be possible to avoid loss of the authorization
using the menu command Authorization > Recover.
2.3 Upgrading the Authorization
Use the "Upgrade" menu command to upgrade authorizations. To use this function,
you require:
•The authorization diskette of the authorization you want to upgrade
•The "AuthorsW authorization program, version 2.0" on hard disk
•The new S7-Graph upgrade on diskette
•The old authorization on diskette or hard disk
When you upgrade, the old authorizations are deleted and replaced by new ones.
For this reason, the authorization diskette must never be made read-only.
1. Insert the new authorization diskette.
2. Start the "Authorsw.exe" program on the hard disk drive.
3. Select the menu command Authorization > Upgrade. A dialog box is opened
in which you can select the upgrade program. You will then be asked to insert
the authorization diskette of the old authorization.

Installation and Authorization
S7-GRAPH for S7 300/400 Programming Sequential Control Systems
2-4 C79000-G7076-C526-01
4. Insert the required authorization diskette. You will then be asked whether you
really want to upgrade. This is the last opportunity to cancel the upgrade. After
you confirm this prompt, do not interrupt the upgrade procedure under any
circumstances otherwise you will lose the authorization.
5. Click the OK button. You will then be asked to insert the authorization diskette
of the new authorization.
All the necessary requirements are checked. If these requirements are met, the
upgrade is completed by activating the new authorization.
2.4 Uninstalling the Authorization
If, for example, you want to reformat the hard disk containing the authorization, you
must first transfer the authorizations back to the authorization diskette (uninstall).
For this, you require the original yellow authorization diskette of the STEP 7
standard software. You can also transfer the authorizations of your optional
packages back to this authorization diskette.
To transfer the authorization back to the authorization diskette:
1. insert the yellow original authorization diskette in your floppy disk drive, for
example, drive A.
2. Start the "Authorsw.exe" program on the hard disk drive.
3. Select the drive on which your authorization is located. All the authorizations
found on this drive are displayed.
4. Select the relevant authorization.
5. Holding down the left mouse button, drag the selected authorization to drive A:\.
The authorization is transferred to the authorization diskette.
6. Close the dialog box if you do not want to remove any further authorizations.
You can use this diskette again to install the authorization.
2.5 Rules for Handling Authorizations
Note
Read the instructions in this section and in the README.TXT. If you do not keep to
the instructions in this file, you may destroy the authorization.
When is it necessary to uninstall authorizations?
Before you format, compress, or restore your hard disk drive, or before you install a
new operating system, you must first uninstall existing authorizations.

Installation and Authorization
S7-GRAPH for S7-300/400 Programming Sequential Control Systems
C79000-G7076-C526-01 2-5
Backup
If a backup of your hard disk contains copies of your authorizations, there is a risk
that the valid, installed authorizations will be overwritten and destroyed when you
write the backup data to the hard disk.
To avoid loss of the authorization by overwriting an authorized system with a
backup:
•Either remove all authorizations before you make your backup
•Or exclude the authorizations from the backup.
Hard Disk Optimization
If you use an optimization program that allows fixed blocks to be moved on the
hard disk, you should only use this function after first transferring all authorizations
from the hard disk back to the authorization diskette.
Defective Sectors
After installing an authorization, a special cluster is created on the hard disk that is
sometimes indicated as "defective". Do not attempt to repair this or you will
probably destroy the authorization.
Read-Only and Copy Protection
The authorization diskette must not be made read-only.
Files on the authorization diskette can be copied to a different drive (for example
hard disk) and used there. It is, however, not possible to install an authorization
with the copied data; this is only possible with the original authorization diskette.
Permitted Drives
The authorization can only be installed on a hard disk drive. If you have a
compressed drive (for example DBLSPACE), you can install on its host drive.
The authorization tool prevents installation on unsuitable drives.
Location
When you install an authorization, the files are transferred to the protected folder
"AX NF ZZ" with the attributes "system" and "hidden".
•Do not change these attributes.
•The files must not be modified or deleted.

Installation and Authorization
S7-GRAPH for S7 300/400 Programming Sequential Control Systems
2-6 C79000-G7076-C526-01
•The folder must not be moved. Files copied from the folder (authorizations) are
detected as invalid authorizations and cannot be used.
If you do not keep to these rules, the authorization will be irretrievably lost.
The protected folder "AX NF ZZ" is created only once per drive. It contains all the
authorizations installed on the drive. It is created when you first install an
authorization and is deleted when you remove the last authorization from it.
For each authorization, two files with the same name but with different extensions
are created. These files are given the authorization name as the file name.
Number of Authorizations
You can install any number of authorizations on one drive providing there is
enough space; however, only one of each version (for example only one
S7-Graph V4.x and only one S7-Graph V5.x). These authorizations do not affect
each other.
Defective Authorization
Defective authorizations on a hard disk can no longer be removed with the
AuthorsW authorization tool. They can even block the installation of new, valid
authorizations. In this case, contact your Siemens distributor or sales office.
Authorization Tool
Use version V2.0 of the AuthorsW authorization tool and where possible avoid
using older versions.
Note
Since V2.0 does not recognize all older authorizations, you may nevertheless need
to use an older AUTHORS version (DOS version) < V3.x.
2.6 Installing S7-Graph
S7-Graph contains a Setup program that installs the package automatically.
Prompts on the screen guide you step by step through the entire installation. The
Setup program is started as usual when installing software in Windows 95/98 or
Windows NT.
The essential phases of installation are as follows:
•Copying the data to your programming device/PC
•Installing the authorization (if required)