Siemens SIMATIC PCS 7 User manual

SIMATIC
Process Control System PCS 7
Compendium Part B -
Process Safety (V8.2)
Operating Manual
Valid for PCS 7 V8.2
SIMATIC F
-Systems V6.1 SP2
SIMATIC Safety Matrix V6.2 SP2
07/2016
A5E35031794
-AB
Security information
1
Preface
2
What's new?
3
Installing the fail-safe system
4
Advanced PCS 7 ES settings
5
Configuring S7F/FH
hardware
6
Configuring the safety
program
7
Configuration with Safety
Matrix
8
Changes, tracking changes,
and acceptance
9
Service and support
10

Siemens AG
Division Digital Factory
Postfach 48 48
90026 NÜRNBERG
GERMANY
A5E35031794-AB
Ⓟ
07/2016 Subject to change
Copyright © Siemens AG 2016.
All rights reserved
Legal information
Warning notice system
This manual contains notices you have to observe in order to ensure your personal safety, as well as to prevent
damage to property. The notices referring to your personal safety are highlighted in the manual by a safety alert
symbol, notices referring only to property damage have no safety alert symbol. These notices shown below are
graded according to the degree of danger.
DANGER
indicates that death or severe personal injury will result if proper precautions are not taken.
WARNING
indicates that death or severe personal injury
may
result if proper precautions are not taken.
CAUTION
indicates that minor personal injury can result if proper precautions are not taken.
NOTICE
indicates that property damage can result if proper precautions are not taken.
If more than one degree of danger is present, the warning notice representing the highest degree of danger will
be used. A notice warning of injury to persons with a safety alert symbol may also include a warning relating to
property damage.
Qualified Personnel
The product/system described in this documentation may be operated only by
personnel qualified
for the specific
task in accordance with the relevant documentation, in particular its warning notices and safety instructions.
Qualified personnel are those who, based on their training and experience, are capable of identifying risks and
avoiding potential hazards when working with these products/systems.
Proper use of Siemens products
Note the following:
WARNING
Siemens products may only be used for the applications described in the catalog and in the relevant technical
documentation. If products and components from other manufacturers are used, these must be recommended
or approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation and
maintenance are required to ensure that the products operate safely and without any problems. The permissible
ambient conditions must be complied with. The information in the relevant documentation must be observed.
Trademarks
All names identified by ® are registered trademarks of Siemens AG. The remaining trademarks in this publication
may be trademarks whose use by third parties for their own purposes could violate the rights of the owner.
Disclaimer of Liability
We have reviewed the contents of this publication to ensure consistency with the hardware and software
described. Since variance cannot be precluded entirely, we cannot guarantee full consistency. However, the
information in this publication is reviewed regularly and any necessary corrections are included in subsequent
editions.

Compendium Part B - Process Safety (V8.2)
Operating Manual, 07/2016, A5E35031794-AB 3
Table of contents
1 Security information ................................................................................................................................ 7
2 Preface ................................................................................................................................................... 8
3 What's new? ......................................................................................................................................... 10
4 Installing the fail-safe system ................................................................................................................ 11
4.1 Software components ............................................................................................................. 11
4.2 Installation on the PCS 7 engineering station (ES) ................................................................ 12
4.2.1 Installing S7 F Systems .......................................................................................................... 12
4.2.2 Installing Safety Matrix ............................................................................................................ 13
4.3 Installation on the PCS 7 operator station (OS) ..................................................................... 13
4.4 OS client installation ............................................................................................................... 14
4.4.1 Installing S7 F Systems .......................................................................................................... 14
4.4.2 Installing Safety Matrix ............................................................................................................ 14
4.5 Installation steps on an office PC ........................................................................................... 14
5 Advanced PCS 7 ES settings ................................................................................................................ 15
5.1 Access protection .................................................................................................................... 15
5.1.1 General measures .................................................................................................................. 15
5.1.2 Access protection with SIMATIC Logon ................................................................................. 15
5.2 CFC settings for compiling and downloading ......................................................................... 16
6 Configuring S7F/FH hardware ............................................................................................................... 18
6.1 Adapting CPU parameters (single F-system) ......................................................................... 19
6.1.1 Password and access protection ............................................................................................ 19
6.1.2 Access protection with SFC 109 ............................................................................................. 20
6.1.3 Cyclic interrupts ...................................................................................................................... 23
6.1.4 Diagnostics/Clock ................................................................................................................... 29
6.1.5 H parameters .......................................................................................................................... 30
6.2 Adapting CPU parameters (fault-tolerant F system) ............................................................... 32
6.2.1 Reaction to RAM/PIQ comparison error ................................................................................. 32
6.2.2 Cyclic interrupt OB with special handling................................................................................ 34
6.2.3 Monitoring times ...................................................................................................................... 35
6.2.4 Calculating monitoring times ................................................................................................... 36
6.3 Communications module parameters/Networks ..................................................................... 39

Table of contents
Compendium Part B - Process Safety (V8.2)
4 Operating Manual, 07/2016, A5E35031794-AB
6.4 Setting system parameters for F-signal modules .................................................................. 43
6.4.1 Operating mode ..................................................................................................................... 43
6.4.2 PROFIsafe addresses ............................................................................................................ 44
6.4.3 Module parameters - general ................................................................................................. 45
6.4.4 Activating channels ................................................................................................................ 47
6.4.5 Parameter assignment for SM326; DI 8 x NAMUR ............................................................... 50
6.4.6 Parameter assignment for SM326; DI 24 x DC 24V .............................................................. 51
6.4.7 Parameter assignment for SM326; DO 10 x DC 24V/2A (6ES7326-2BF01-0AB0) .............. 54
6.4.8 Parameter assignment for SM326; F-DO 10 x DC 24V/2A PP (6ES7326-2BF10-0AB0) ..... 55
6.4.9 Parameter assignment for SM326; F-DO 8 x DC24 V/2A PM ............................................... 58
6.4.10 Assigning parameters for the SM336; AI 6 x 13Bit ................................................................ 59
6.4.11 Assigning parameters for the SM336; F-AI 6 x 0/4...20mA HART ........................................ 62
6.4.12 Parameter assignment for EM 8 F-DI NAMUR Ex ................................................................. 65
6.4.13 Parameter assignment for EM 4 F-DO Ex 17.4V/40mA ........................................................ 67
6.4.14 Parameter assignment for EM 4 F-AI Ex HART .................................................................... 69
6.5 Configuring redundant F-signal modules ............................................................................... 72
6.6 Marshalled Termination Assemblies (MTAs) ......................................................................... 74
6.7 "Wiring and Voting" architectures for ET 200M ..................................................................... 75
6.7.1 Voting on the module or in the CPU ...................................................................................... 75
6.7.2 2oo3 Voting with F-AI ............................................................................................................. 77
7 Configuring the safety program ............................................................................................................. 78
7.1 Introduction ............................................................................................................................ 78
7.2 Creating the safety program .................................................................................................. 80
7.2.1 Defining the program structure .............................................................................................. 81
7.2.2 Creating CFC charts .............................................................................................................. 82
7.2.3 Assigning parameters to and interconnecting F-blocks ......................................................... 82
7.2.4 Run sequence of F-blocks ..................................................................................................... 84
7.2.5 F-runtime groups .................................................................................................................... 86
7.2.6 F-shutdown groups ................................................................................................................ 89
7.2.7 Data exchange between the F user program and standard user program ............................ 92
7.2.8 How F-blocks with floating-point operations respond to number range overflows ................ 93
7.3 Configuring fail-safe AS-AS communication .......................................................................... 95
7.3.1 Configuring S7 connections ................................................................................................... 96
7.3.2 Configuring F-communications blocks ................................................................................... 97
7.4 F-STOP ................................................................................................................................ 100
7.4.1 Complete shutdown ............................................................................................................. 100
7.4.2 Partial shutdown................................................................................................................... 100
7.4.3 Parameter assignment for shutdown behavior .................................................................... 101
7.4.4 Causes of errors................................................................................................................... 102
7.4.5 Execution of an F-STOP in S7 F/FH systems ..................................................................... 103
7.4.6 Exiting an F-STOP ............................................................................................................... 104
7.5 F startup and (re)start protection ......................................................................................... 104
7.5.1 F-startup ............................................................................................................................... 104
7.5.2 (Re)start protection .............................................................................................................. 105
7.6 I/O access via F driver blocks .............................................................................................. 106

Table of contents
Compendium Part B - Process Safety (V8.2)
Operating Manual, 07/2016, A5E35031794-AB 5
7.7 Passivation and reintegration of input/output channels ........................................................ 107
7.7.1 Passivation - general ............................................................................................................ 107
7.7.2 Group passivation ................................................................................................................. 108
7.7.3 Reintegration following elimination of errors ......................................................................... 109
7.7.4 Automatic reintegration on channel error.............................................................................. 109
7.7.5 Programming reintegration following module errors or channel errors requiring
acknowledgment ................................................................................................................... 110
7.8 Compiling the F-program ...................................................................................................... 117
7.8.1 Password protection for safety-related functions and settings ............................................. 117
7.8.2 Parameterizing the maximum F cycle monitoring time ......................................................... 118
7.8.3 Compiling the S7 program .................................................................................................... 119
7.9 Safety mode and downloading the safety program .............................................................. 121
7.9.1 Information on safety mode .................................................................................................. 121
7.9.2 Deactivating safety mode ..................................................................................................... 121
7.9.3 Activating safety mode .......................................................................................................... 123
7.9.4 Downloading the safety program .......................................................................................... 124
7.10 Operating and changing safety-related parameters on a PCS 7 OS ................................... 126
7.10.1 Safety Data Write (SDW) ...................................................................................................... 126
7.10.2 F_QUITES ............................................................................................................................. 129
7.10.3 Maintenance Override Switch (MOS) ................................................................................... 129
7.11 Monitoring times and system response times ...................................................................... 133
7.11.1 Diagnostic block "CPU_RT" .................................................................................................. 134
7.11.2 Calculating the F-cycle monitoring time (for block F_CYC_CO) ........................................... 136
7.11.3 Communication monitoring time for F CPU/F signal modules .............................................. 140
7.11.4 Monitoring time for safety-related communication between F-CPUs ................................... 149
7.11.5 Monitoring communication between F-shutdown groups ..................................................... 151
7.11.6 Response times of safety functions ...................................................................................... 152
8 Configuration with Safety Matrix .......................................................................................................... 160
8.1 Creating and configuring a Safety Matrix.............................................................................. 160
8.2 Documenting a Safety Matrix ................................................................................................ 162
8.3 Organizing matrices into different shutdown groups ............................................................ 162
8.4 Duplicating matrices .............................................................................................................. 167
8.5 User authorizations for the Safety Matrix Viewer ................................................................. 169
8.6 Interconnections between the matrix and safety program .................................................... 171
8.7 Using imported F channel drivers in the matrix .................................................................... 171
8.8 New matrix operating blocks ................................................................................................. 172

Table of contents
Compendium Part B - Process Safety (V8.2)
6 Operating Manual, 07/2016, A5E35031794-AB
9 Changes, tracking changes, and acceptance ....................................................................................... 173
9.1 General information ............................................................................................................. 173
9.2 Preparing for changes .......................................................................................................... 174
9.3 Changes in CFC................................................................................................................... 176
9.4 Changes in HW Config ........................................................................................................ 177
9.5 Downloading changes/Complete downloading .................................................................... 178
9.6 Tracking changes in the safety program .............................................................................. 178
9.7 Printing program data .......................................................................................................... 182
9.8 Plant acceptance.................................................................................................................. 184
10 Service and support ............................................................................................................................. 185

Compendium Part B - Process Safety (V8.2)
Operating Manual, 07/2016, A5E35031794-AB 7
Security information
1
Security information
Siemens provides products and solutions with industrial security functions that support the
secure operation of plants, solutions, machines, equipment and/or networks.
In order to protect plants, systems, machines and networks against cyber threats, it is
necessary to implement – and continuously maintain – a holistic, state-of-the-art industrial
security concept. Siemens’ products and solutions only form one element of such a concept.
Customer is responsible to prevent unauthorized access to its plants, systems, machines
and networks. Systems, machines and components should only be connected to the
enterprise network or the Internet if and to the extent necessary and with appropriate
security measures (e.g. use of firewalls and network segmentation) in place.
Additionally, Siemens’ guidance on appropriate security measures should be taken into
account. For more information about industrial security, please visit
http://www.siemens.com/industrialsecurity.
Siemens’ products and solutions undergo continuous development to make them more
secure. Siemens strongly recommends to apply product updates as soon as available and to
always use the latest product versions. Use of product versions that are no longer supported,
and failure to apply latest updates may increase customer’s exposure to cyber threats.
To stay informed about product updates, subscribe to the Siemens Industrial Security RSS
Feed under http://www.siemens.com/industrialsecurity.

Compendium Part B - Process Safety (V8.2)
Operating Manual, 07/2016, A5E35031794-AB 8
Preface
2
Subject of the manual
As a distinctly open system, SIMATIC PCS 7 can be flexibly adapted to a wide range of
customer needs. The system software provides the project engineer with a great deal of
freedom in terms of project configuration, as well as in the design of the program and
visualization.
Experience has shown that subsequent modernization or plant expansion work is made
much easier if the project is configured "in conformance with PCS 7" as far as possible right
from the start. This means users must adhere to certain basic rules to ensure that the
provided system functions will offer optimum usability in the future.
This manual serves as a compendium in addition to the product documentation for SIMATIC
PCS 7. The basic tasks for creating and configuring the project are described in the form of
instructions with numerous illustrations.
The compendium is divided into the following parts:
●Configuration guidelines including checklist
●Process safety including two checklists
●Technical functions with SFC types
●Operation and maintenance including checklist
●Hardware installation including checklist
●Industrial Security
Subject of Part B - Process safety
This compendium directly reflects the recommended method for configuration and
corresponds to the procedure described in the documentation for S7 F/FH Systems,
whereby numerous practical experiences were evaluated. The description relates to working
with the project and the parameter settings of the components it contains but not the
application itself.
Compendium Part B is dedicated to the implementation of the fail-safe part of an S7
program.
It examines the following F-software components:
●S7 F-Systems
●SIMATIC Safety Matrix
Checklists
You can download the checklist for the SIMATIC PCS 7 Compendium Part B as a zip file via
the "Appendix" button in the Industry Online Support Portal.

Preface
Compendium Part B - Process Safety (V8.2)
Operating Manual, 07/2016, A5E35031794-AB 9
Validity
This documentation is valid for the software packages:
●SIMATIC PCS 7 V8.2
●SIMATIC F-Systems V6.1 SP2
●SIMATIC Safety Matrix V6.2 SP2
SIMATIC PCS 7 in Industry Online Support
An overview of the most important technical information and solutions for SIMATIC PCS 7 is
available at http://www.siemens.com/industry/onlinesupport/pcs7.
SIMATIC PCS 7 documentation
Full PCS 7 documentation is available to you free of charge and in multiple languages in
PDF format at www.siemens.com/pcs7-documentation.

Compendium Part B - Process Safety (V8.2)
Operating Manual, 07/2016, A5E35031794-AB 10
What's new?
3
The contents of the compendium have been updated in accordance with the new functions
and operator input options of SIMATIC PCS 7 V8.2.
Changes and extensions were made in the following sections in particular:
●Installing the fail-safe system
●Access protection with SFC 109
The section "Creating F block types" has been removed. You can find information on
creating F-block types in Section 5.7 of the manual
"SIMATIC Industrial Software S7 F/FH Systems – Configuring and Programming"
(https://support.industry.siemens.com/cs/ww/en/view/101509838)

Compendium Part B - Process Safety (V8.2)
Operating Manual, 07/2016, A5E35031794-AB 11
Installing the fail-safe system
4
4.1
Software components
This documentation is based on PCS 7 version V8.2 and the following additional software
components:
●S7 F-Systems
–S7 F Configuration Pack V5.5 SP12
–S7 F-Systems V6.1 SP2
–S7 F-Systems Lib V1_3 SP1 Upd. 1
–S7 F-Systems HMI V6.1 SP2
●Safety Matrix
–Safety Matrix Engineering Tool V6.2 SP2
–Safety Matrix Viewer V6.2 SP2
–Safety Matrix AS-OS Engineering V6.2 SP3
A "S7 F-Systems RT License" is also required for operating a safety-related automation
system.
All SIMATIC software must be closed during the installation process.
Note
You can find more information in the following man
uals:
•
S7 F/FH Systems Configuring and Programming
(https://support.industry.siemens.com/cs/ww/en/view/101509838)
•
Industrial Software Safety Matrix
(https://support.industry.siemens.com/cs/ww/en/view/100675874)

Installing the fail-safe system
4.2 Installation on the PCS 7 engineering station (ES)
Compendium Part B - Process Safety (V8.2)
12 Operating Manual, 07/2016, A5E35031794-AB
4.2
Installation on the PCS 7 engineering station (ES)
4.2.1
Installing S7 F Systems
Procedure
1. Run SETUP.EXE to start the installation and follow the instructions in the setup program.
2. Select the "Engineering" package for installation on the ES . The following components
are selected for installation in the next window:
–F Systems V6.1 SP2
–F Systems HMI V6.1 SP2
–S7 F-Systems Lib V1_3 SP1 Upd.1
–S7 F-ConfigurationPack V5.5 SP11
3. Deactivate the option for the S7 F-Configuration Pack V5.5 SP11
4. Carry out the installation.
5. Download the S7 F Configuration Pack V5.5 SP12 via the Siemens Industry Online
Support:
–Download S7 F Configuration Pack V5.5 SP12
(https://support.industry.siemens.com/cs/ww/en/view/15208817)
6. Run SETUP.EXE to start the installation and follow the instructions in the setup program.
Note
With
an update installation, check whether the new version of S7 F-Systems Lib is required
or the old version is to be retained.
When employing PCS 7, check whether PCS 7 supports the F
-modules used.

Installing the fail-safe system
4.3 Installation on the PCS 7 operator station (OS)
Compendium Part B - Process Safety (V8.2)
Operating Manual, 07/2016, A5E35031794-AB 13
4.2.2
Installing Safety Matrix
Procedure
Safety Matrix Engineering requires an installation of F-System. Check if a corresponding
version is installed.
1. Start the installation of the Safety Matrix using SETUP.EXE.
2. Follow the instructions of the setup wizard and select the "Engineering" package. The
following components are selected for installation in the next window:
–Safety Matrix Engineering Tool V6.2 SP2
–Safety Matrix Viewer V6.2 SP2
–Safety Matrix AS-OS Engineering V6.2 SP3
3. Download the Safety Matrix AS-OS Engineering V6.2 SP3 via the Siemens Industry
Online Support:
–Download Safety Matrix AS-OS Engineering V6.2 SP3
(https://support.industry.siemens.com/cs/ww/en/view/109482577)
–You require only the following file for PCS 7 V8.2: Update software Safety Matrix AS-
OS Engineering V6.2 SP3 "S7FSMTXMAP_V62_SP3.zip".
4. Unzip the archive file.
5. Run SETUP.EXE to start the installation and follow the instructions in the setup program.
4.3
Installation on the PCS 7 operator station (OS)
The next section outlines the installation steps for an OS client. Please follow these if you
are using an OS single station or an OS server for operation.

Installing the fail-safe system
4.4 OS client installation
Compendium Part B - Process Safety (V8.2)
14 Operating Manual, 07/2016, A5E35031794-AB
4.4
OS client installation
4.4.1
Installing S7 F Systems
Procedure
If you are using SDW or MOS, run SETUP.EXE to start the installation and select the
"Runtime" package: The following components are selected for installation in the next dialog:
●S7 F-Systems HMI V6.1 SP2
4.4.2
Installing Safety Matrix
Procedure
Run SETUP.EXE to start the installation. Follow the instructions in the setup program and
select the "Runtime" package: The following components are selected for installation in the
next dialog:
●Safety Matrix Viewer V6.2 SP2
4.5
Installation steps on an office PC
Procedure
You can install the Safety Matrix Editor on an office PC to design safety features.
1. Start the installation using SETUP.EXE.
2. Follow the instructions of the setup program and select the "Editor" package. The
following components are selected for installation in the next window:
●Safety Matrix Editor V6.2 SP2
●Automation License Manager V5.3

Compendium Part B - Process Safety (V8.2)
Operating Manual, 07/2016, A5E35031794-AB 15
Advanced PCS 7 ES settings
5
5.1
Access protection
An S7 F/FH system being operated as a safety system is protected by two passwords:
●The CPU password is configured in the hardware configuration and is intended to protect
the CPU against accidental downloading or the wrong program being downloaded.
●Another password is configured in the "Edit Safety Program" dialog box, It protects the
fail-safe user program and the parameters of the signal modules and, where necessary,
the parameters of the CPU (option in the "Protection" register of the CPU properties).
5.1.1
General measures
You can restrict access to the ES by implementing access protection for authorized persons:
To do this you can, for example, install the ES in an operating area that can only be
accessed by these persons.
You can use the options offered by the operating system by protecting the ES with a
password and setting a screen saver that is activated automatically.
To protect the safety program, you can implement organizational measures to ensure that:
●The passwords for the CPU and safety program can only be accessed by authorized
persons.
●The timer is reset for the security password (menu "Options > Edit safety program >
Password > Cancel" or close all applications and the SIMATIC Manager).
●Authorized persons expressly reset access authorization for the F-CPU before exiting the
ES (by selecting "CPU > Access authorization > Cancel" or closing all applications in the
SIMATIC Manager).
5.1.2
Access protection with SIMATIC Logon
With PCS 7 V7.0 and higher, it is possible to set up access protection for individual
subprojects with SIMATIC Logon. With a station-selective multiproject structure, this means
that it is possible to assign access rights for protecting AS projects with F program.
Requirement
The SIMATIC Logon Service V1.3 SP1 or higher is installed.

Advanced PCS 7 ES settings
5.2 CFC settings for compiling and downloading
Compendium Part B - Process Safety (V8.2)
16 Operating Manual, 07/2016, A5E35031794-AB
Procedure
1. In the SIMATIC Manager, activate access protection on a selected project node via
"Options > Access Protection".
The project format is changed the first time access protection is activated. A message
appears indicating that the modified project can no longer be edited with older versions of
STEP 7 (< 5.4).
2. This is followed by logon to the SIMATIC Logon Service.
The Windows user activating access protection is entered automatically as the first
project administrator. The project password is set at this time.
Note
When a multiproject is opened without prior authentication, the projects with activated
access protection are disp
layed grayed-out.
5.2
CFC settings for compiling and downloading
Procedure
1. For compiling programs with F-blocks, set the threshold for generating the warning based
on the number of blocks per sequence group. The default value is 50.
Note
This value applies for any project that is compiled on the ES and should be reset for the
purpose of compiling standard programs.
The warning limit is designed to prevent creation of blocks with more than 64 KB. The
compiler aborts with an error in this case because blocks with more than 64 KB are not
possible. You can set the warning limit individually (1 – 32767), for example, after
empirical determination. To determine the warning limit empirically, the program must be
compiled at regular intervals during the configuration. Then you can check in the block
folder of the program whether a block (Task FC) is approaching the maximum allowable
size of 64 KB. If the block size is close to this limit, the warning limit is set too high. If the
block size is well below the limit of 64 KB, the warning limit can be increased.
If a block is close to the limit of 64 KB, you can reduce the required memory by inserting
new sequence groups or by moving blocks/sequence groups to a cyclic interrupt.

Advanced PCS 7 ES settings
5.2 CFC settings for compiling and downloading
Compendium Part B - Process Safety (V8.2)
Operating Manual, 07/2016, A5E35031794-AB 17
You can find additional information on this topic in the FAQ "Why does the error message
"Maximum length of code area reached (max. 64 KB)" or "Insufficient main memory"
appear when the CFC charts are compiled?"
(https://support.industry.siemens.com/cs/ww/en/view/771569).
2. In the "Areas Reserved for Other Applications" field, set the value for "FC numbers from:"
to 0. The default setting is 60.

Compendium Part B - Process Safety (V8.2)
Operating Manual, 07/2016, A5E35031794-AB 18
Configuring S7F/FH hardware
6
The following CPU types have been released for using S7 F-systems in conjunction with
PCS 7:
●CPU 412H
●CPU 414H
●CPU 416H
●CPU 417H
●CPU 410H
In the SIMATIC PCS 7 catalog, safety-related automation systems can be configured and
ordered as bundles with a single or redundancy station in various designs.

Configuring S7F/FH hardware
6.1 Adapting CPU parameters (single F-system)
Compendium Part B - Process Safety (V8.2)
Operating Manual, 07/2016, A5E35031794-AB 19
6.1
Adapting CPU parameters (single F-system)
6.1.1
Password and access protection
In order to activate the safety functions contained in the H-CPU's operating system, you
need to enter a password. A prompt appears accordingly on CPU download.
The "CPU contains safety program" option also needs to be activated.
There is the option of protecting the CPU parameters with the password for the safety
program.

Configuring S7F/FH hardware
6.1 Adapting CPU parameters (single F-system)
Compendium Part B - Process Safety (V8.2)
20 Operating Manual, 07/2016, A5E35031794-AB
As of PCS 7 V8.1, you can encrypt the CPU password assigned by the hardware
configuration in the project data management. The increased password security is only
relevant for the engineering system. If the check box is selected, the password entered in the
data management is stored encrypted. This setting increases the password security. The
function of the password remains the same.
NOTICE
Using the "Increased password security" functionality
Projects in which the "Increased password security" option is activated may only continue
to be used in STEP 7 V5.5 SP4 or higher, because this functionality is not backwards
compatible!
Note
At least protection level 1 and "Can be bypassed by password" must be configured.
In addition, the fail
-safe program is assigned a password that is created the first time the
safety
-related software or hardware is used. This password must not be the same as the
CPU password.
6.1.2
Access protection with SFC 109
There is an additional mode for SFC 109 as of firmware V6.0 of the H-CPU. With MODE =
12, protection level 3 can be set without password authorization.
Calling of SFC 109 with MODE=0
Setting the protection level: Any applicable block that is present on password authorization is
lifted through this call.
Calling of SFC 109 with MODE=1
Setting of protection level 2 with password authorization: This means that you can lift the
write protection set with SFC 109 when knowing the valid password. Any applicable block
that is present on password authorization is lifted through this call.