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Preface, Contents
Organization Blocks
1
Common Parameters for SFCs
2
Copy and Block Functions
3
SFCs for Controlling Program Execution
4
SFCs for Handling the System Clock
5
SFCs for Handling Run-Time Meters
6
SFCs/SFBs for Transferring Data
Records
7
DPV1 SFBs According to PNO AK 1131
8
SFCs for Handling Time-of-Day Interrupts
9
SFCs for Handling Time-Delay Interrupts
10
SFCs for Handling Synchronous Errors
11
SFCs for Handling Interrupts and
Asynchronous Errors
12
SFCs for Diagnostics
13
SFCs and SFBs for Updating
the Process Image and
Processing Bit Fields
14
System Functions for Addressing
Modules
15
SFCs for Distributed I/Os or
PROFINET IO
16
PROFInet
17
SFCs for Global Data Communication
18
Overview over the S7 Communication
and the S7 Basic Communication
19
S7 Communication
20
Communication SFCs for Non-Configured
S7 Connections
21
Open TCP/IP Communication via
Industrial Ethernet
22
Generating Block-Related Messages
23
IEC Timers and IEC Counters
24
IEC Functions
25
SFBs for Integrated Control
26
SFBs for Compact CPUs
27
SFCs for H CPUs
28
Integrated Functions
(for CPUs with integrated I/Os)
29
Plastics Techology
30
Diagnostic Data
31
System Status Lists (SSL)
32
Events
33
SIMATIC
System Software
for S7-300/400 System
and Standard Functions
Reference Manual
This manual is part of the documentation
package with the order number:
6ES7810-4CA07-8BW1
List of SFCs, and SFBs
34
Edition 07/2005
A5E00261410-02
Bibliography,
Glossary, Index
Siemens AG
Automation and Drives
Postfach 4848
90437 NÜRNBERG
GERMANY
Copyright © Siemens AG 2005
A5E00261410-02
Siemens AG 2005
Technical data subject to change.
Safety Guidelines
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 to property damage only have no safety alert symbol. The
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
with a safety alert symbol indicates that minor personal injury can result if proper precautions are not
taken.
Caution
without a safety alert symbol indicates that property damage can result if proper precautions are not
taken.
Attention
indicates that an unintended result or situation can occur if the corresponding notice is not taken into
account.
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 device/system may only be set up and used in conjunction with this documentation. Commissioning
and operation of a device/system may only be performed by qualified personnel
. Within the context of
the safety notices in this documentation qualified persons are defined as persons who are authorized to
commission, ground and label devices, systems and circuits in accordance with established safety
practices and standards.
Prescribed 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.
Correct, reliable operation of the product requires proper transport, storage, positioning and assembly
as well as careful operation and maintenance.
Trademarks
All names identified by ® are registered trademarks of the 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.
System Software for S7-300/400 System and Standard Functions
A5E00261410-02
iii
Preface
Purpose
This manual provides you with a comprehensive overview of the organization
blocks (OB), system functions (SFC), system and standard function blocks (SFC),
and IEC functions contained in the operating systems of the CPUs of the S7-300
and S7-400, diagnostic data, system status lists (SZL), and events.
Note
Refer to the reference section of the "S7-300 Automation System
CPU Specifications: CPU 31xC and CPU 31x" and "S7-300 Automation System
CPU Specifications: CPU 312IFM - 318-2 DP“ /70/
or the
"Automation System S7-400: CPU Specifications" reference manual /101/
or the
Instruction List: S7-400 Programmable Controller /102/
(whichever version applies
to your CPU) for details of which of these functions and blocks are available on
which CPU. The properties of the CFBs and the S7 signaling functions for specific
CPUs are described in /70/
and /101/.
For information about the CPU operating systems, program design, and the
communications and diagnostic capabilities of the CPUs, refer to the
"Configuring Hardware and Communication Connections STEP 7 V5.3" manual
/234/
How to call functions and function blocks in your program is explained in the
language descriptions.
You program and assign parameters for all these functions using the STEP 7
standard software. How to use this software is described in the
"Programming with STEP 7 V5.3" manual /231/
and in the STEP 7 online help.
Audience
This manual is intended for programmers and engineers who are familiar with
controlling processes and are responsible for writing programs for programmable
logic controllers.
Preface
System Software for S7-300/400 System and Standard Functions
iv A5E00261410-02
STEP 7 Documentation Packages
The following table displays an overview of the STEP 7 documentation:
Documentation Purpose Order Number
STEP 7 Basic Information with
• Working with STEP 7 V5.3, Getting
Started Manual
• Programming with STEP 7 V5.3
• Configuring Hardware and
Communication Connections,
STEP 7 V5.3
• 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.
6ES7810-4CA07-8BW0
STEP 7 Reference with
• Ladder Logic (LAD)/Function Block
Diagram (FBD)/Statement List (STL)
for S7-300/400 manuals
• Standard and System Functions for
S7-300/400
Provides reference information
and describes the programming
languages LAD, FBD, and STL,
and standard and system
functions extending the scope of
the STEP 7 basic information.
6ES7810-4CA07-8BW1
Online Helps Purpose Order Number
Help on STEP 7 Basic information on
programming and configuring
hardware with STEP 7 in the form
of an online help.
Part of the STEP 7
Standard software.
Reference helps on STL/LAD/FBD
Reference help on SFBs/SFCs
Reference help on Organization Blocks
Context-sensitive reference
information.
Part of the STEP 7
Standard software.
Preface
System Software for S7-300/400 System and Standard Functions
A5E00261410-02
v
Online Help
The manual is complemented by an online help which is integrated in the software.
This online help is intended to provide you with detailed support when using the
software.
The help system is integrated in the software via a number of interfaces:
• There are several menu commands which you can select in the Help menu:
The Contents command opens the index for the Help on STEP 7.
• Using Help provides detailed instructions on using the online help.
• The context-sensitive help offers information on the current context, for
example, an open dialog box or an active window. You can open the context-
sensitive help by clicking the "Help" button or by pressing F1.
• The status bar offers another form of context-sensitive help. It displays a short
explanation for each menu command when the mouse pointer is positioned on
the menu command.
• A brief explanation is also displayed for each icon in the toolbar when the
mouse pointer is positioned on the icon for a short time.
If you prefer to read the information from the online help in printed format, you can
print out individual help topics, books, or the entire online help.
This manual is an extract from the HTML-based Help on STEP 7. As the manual
and the online help share an almost identical structure, it is easy to switch between
the manual and the online help.
Feedback on Documentation
To help us to provide the best possible documentation for you and future STEP 7
users, we need your support. If you have any 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.
Other Manuals
The various S7-300 and S7-400 CPUs and the S7-300 and S7-400 modules are
described in the following manuals:
• For the S7-300 programmable logic controller, refer to the manuals: "
Automatisierungssystem S7-300 CPU-Daten: CPU 31xC und CPU 31x und
Automatisierungssystem S7-300 CPU-Daten: CPU 312 IFM bis 318-2 DP“ "
/70/, "S7-300, M7-300 Programmable Controllers Module Specifications" /71/
and in the Instruction List /72/.
• For the S7-400 programmable logic controller, refer to the manual:
" Automatisierungssystem S7-400: CPU Daten " /101/ and in the Instruction
List /102/.
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