s 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 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 16 SFCs for Global Data Communication 17 Overview over the S7 Communication and the S7 Basic Communication 18 S7 Communication 19 Communication SFCs for Non-Configured S7 Connections 20 PROFInet 21 Generating Block-Related Messages 22 IEC Timers and IEC Counters 23 IEC Functions 24 SFBs for Integrated Control 25 SFBs for Compact CPUs 26 SFCs for H CPUs 27 Integrated Functions (for CPUs with Integrated I/Os) 28 Plastics Techology 29 Diagnostic Data 30 System Status Lists (SSL) 31 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 Events 32 List of SFCs, and SFBs 33 Bibliography, Glossary, Index Edition 01/2004 A5E00261410-01 Copyright © Siemens AG 2004 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 Disclaimer of Liability We have checked the contents of this manual for agreement with the hardware and software described. Since deviations cannot be precluded e ntirely, 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 2004 Technical data subject to change. Siemens Aktiengesellschaft A5E00261410-01 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: ! 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. System Software for S7-300/400 System and Standard Functions A5E00261410-01 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. The appendix describes the 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 A5E00261410-01 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 A5E00261410-01 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/. Preface System Software for S7-300/400 System and Standard Functions vi A5E00261410-01 How to Use this Manual This manual covers the following topics: • Chapter 1 explains the functions of all the organization blocks. • Chapter 2 describes the common parameters RET_VAL, REQ and BUSY. • Chapters 3 to 29 describe the SFCs, SFBs and IEC-FCs. • The Chapters sections 30 to 33 contain a description of the structure of the diagnostic data, an overview of the SZL-IDs, the possible events, lists of the SFCs, SFBs and FCs described in this manual, an overview of the SDBs. • The bibliography contains a list of further manuals. • The Glossary explains important terminology. • The Index helps you to locate sections of text and topics quickly. Conventions References to other manuals and documentation are indicated by numbers in slashes / /. These numbers refer to the titles of manuals listed in the bibliography. Special Note The system functions can be interrupted. If there are any restrictions that apply to certain SFCs or situations, these are explained in the description of the particular SFC. Further Support If you have any technical questions, please get in touch with your Siemens representative or agent responsible. You will find your contact person at: http://www.siemens.com/automation/partner Training Centers Siemens offers a number of training courses to familiarize you with the SIMATIC S7 automation system. Please contact your regional training center or our central training center in D 90327 Nuremberg, Germany for details: Telephone: +49 (911) 895-3200. http://www.sitrain.com/ Preface System Software for S7-300/400 System and Standard Functions A5E00261410-01 vii A&D Technical Support Worldwide, available 24 hours a day: Beijing Peking Nuernberg Johnson City Worldwide (Nuernberg) Technical Support 24 hours a day, 365 days a year Phone: +49 (180) 5050-222 Fax: +49 (180) 5050-223 E-Mail: adsupport@ siemens.com GMT: +1:00 Europe / Africa (Nuernberg) Authorization Local time: Mon Fri. 8:00 to 5:00 PM Phone: +49 (180) 5050-222 Fax: +49 (180) 5050-223 E-Mail: adsupport@ siemens.com GMT: +1:00 United States (Johnson City) Technical Support and Authorization Local time: Mon Fri. 8:00 to 5:00 PM Phone: +1 (423) 262 2522 Fax: +1 (423) 262 2289 E-Mail: simatic.hotline@ sea.siemens.com GMT: -5:00 Asia / Australia (Beijing) Technical Support and Authorization Local time: Mon Fri. 8:00 to 5:00 PM Phone: +86 10 64 75 75 75 Fax: +86 10 64 74 74 74 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 System Software for S7-300/400 System and Standard Functions viii A5E00261410-01 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. • Information on field service, repairs, spare parts and more under "Services". System Software for S7-300/400 System and Standard Functions A5E00261410-01 ix Contents 1 Organization Blocks 1-1 1.1 Overview of the Organization Blocks (OBs) 1-1 1.2 Program Cycle Organization Block (OB1) 1-4 1.3 Time-of-Day Interrupt Organization Blocks (OB10 to OB17) 1-6 1.4 Time-Delay Interrupt Organization Blocks (OB20 to OB23) 1-10 1.5 Cyclic Interrupt Organization Blocks (OB30 to OB38) 1-12 1.6 Hardware Interrupt Organization Blocks (OB40 to OB47) 1-14 1.7 Status Interrupt OB (OB 55) 1-16 1.8 Update Interrupt OB (OB 56) 1-17 1.9 Manufacturer Specific Interrupt OB (OB57) 1-18 1.10 Multicomputing Interrupt Organization Block (OB60) 1-19 1.11 Synchronous Cycle Interrupt OBs (OB 61 to OB 64) 1-21 1.12 I/O Redundancy Error OB (OB70) 1-22 1.13 CPU Redundancy Error OB (OB72) 1-24 1.14 Communication Redundancy Error OB (OB73) 1-27 1.15 Time Error Organization Block (OB80) 1-28 1.16 Power Supply Error Organization Block (OB81) 1-30 1.17 Diagnostic Interrupt Organization Block (OB82) 1-32 1.18 Insert / Remove Module Interrupt Organization Block (OB83) 1-34 1.19 CPU Hardware Fault Organization Block (OB84) 1-37 1.20 Priority Class Error Organization Block (OB85) 1-38 1.21 Rack Failure Organization Block (OB86) 1-42 1.22 Communication Error Organization Block (OB87) 1-45 1.23 Processing Interrupt OB (OB 88) 1-47 1.24 Background Organization Block (OB90) 1-48 1.25 Startup Organization Blocks (OB100, OB101 and OB102) 1-50 1.26 Programming Error Organization Block (OB121) 1-55 1.27 I/O Access Error Organization Block (OB122) 1-58 2 Common Parameters for SFCs 2-1 2.1 Evaluating Errors with Output Parameter RET_VAL 2-1 2.2 Meaning of the Parameters REQ, RET_VAL and BUSY with Asynchronous SFCs 2-5 3 Copy and Block Functions 3-1 3.1 Copying Memory Area with SFC20 "BLKMOV" 3-1 3.2 Uninterruptible Copying of Variables with SFC81 "UBLKMOV" 3-4 3.3 Initializing a Memory Area with SFC21 "FILL" 3-6 3.4 Creating a Data Block with SFC22 "CREAT_DB" 3-8 3.5 Deleting a Data Block with SFC23 "DEL_DB" 3-10 3.6 Testing a Data Block with SFC24 "TEST_DB" 3-12 3.7 Compressing the User Memory with SFC25 "COMPRESS" 3-13 3.8 Transferring a Substitute Value to Accumulator 1 with SFC44 "REPL_VAL".3-15 3.9 Generating Data Blocks in Load Memory with SFC82 "CREA_DBL" 3-16 3.10 Reading from a Data Block In Load Memory with SFC83 "READ_DBL" 3-19 3.11 Writing a Data Block in Load Memory with SFC84 "WRIT_DBL" 3-21 3.12 Creating a Data Block with SFC85 "CREA_DB" 3-23 Contents System Software for S7-300/400 System and Standard Functions x A5E00261410-01 4 SFCs for Controlling Program Execution 4-1 4.1 Re-triggering Cycle Time Monitoring with SFC43 "RE_TRIGR" 4-1 4.2 Changing the CPU to STOP with SFC46 "STP" 4-1 4.3 Delaying Execution of the User Program with SFC47 "WAIT" 4-2 4.4 Triggering a Multicomputing Interrupt with SFC35 "MP_ALM" 4-3 4.5 Controlling CiR with SFC104 "CiR" 4-4 5 SFCs for Handling the System Clock 5-1 5.1 Setting the TOD with SFC0 "SET_CLK" 5-1 5.2 Reading the Time with SFC1 "READ_CLK" 5-2 5.3 Synchronizing Slave Clocks with SFC48 "SNC_RTCB" 5-3 5.4 Setting the Time-of-Day and the TOD Status with SFC100 "SET_CLKS" 5-4 6 SFCs for Handling Run-Time Meters 6-1 6.1 Runtime Meters 6-1 6.2 Handling Runtime meters with SFC101 "RTM" 6-2 6.3 Setting the Runtime Meter with SFC2 "SET_RTM" 6-4 6.4 Starting and Stopping a Run-time Meter with SFC3 "CTRL_RTM" 6-5 6.5 Reading a Runtime Meter with SFC4 "READ_RTM" 6-6 6.6 Reading the System Time with SFC64 "TIME_TCK" 6-7 7 SFCs for Transferring Data Records 7-1 7.1 Writing and Reading Data Records 7-1 7.2 Reading Defined Parameters with SFC54 "RD_DPARM" 7-3 7.3 Reading Predefined Parameters with SFC102 "RD_DPARA" 7-4 7.4 Writing Dynamic Parameters with SFC55 "WR_PARM" 7-5 7.5 Writing Default Parameters with SFC56 "WR_DPARM" 7-7 7.6 Assigning Parameters to a Module with SFC57 "PARM_MOD" 7-8 7.7 Writing a Data Record with SFC58 "WR_REC" 7-11 7.8 Reading a Data Record with SFC59 "RD_REC" 7-13 7.9 Further Error Information for SFCs 55 to 59 7-18 8 DPV1 SFBs According to PNO AK 1131 8-1 8.1 Reading a Data Record from a DP Slave with SFB52 "RDREC" 8-1 8.2 Writing a Data Record in a DP Slave with SFB53 "WRREC" 8-3 8.3 Receiving an Interrupt from a DP Slave with SFB54 "RALRM" 8-5 8.4 Sending an Interrupt to the DP Master with SFB75 "SALRM" 8-14 9 SFCs for Handling Time-of-Day Interrupts 9-1 9.1 Handling Time-of-Day Interrupts 9-1 9.2 Characteristics of SFCs 28 to 31 9-2 9.3 Setting a Time-of-Day Interrupt with SFC28 "SET_TINT" 9-4 9.4 Canceling a Time-of-Day Interrupt with SFC29 "CAN_TINT" 9-5 9.5 Activating a Time-of-Day Interrupt with SFC30 "ACT_TINT" 9-6 9.6 Querying a Time-of-Day Interrupt with SFC31 "QRY_TINT" 9-7 10 SFCs for Handling Time-Delay Interrupts 10-1 10.1 Handling Time-Delay Interrupts 10-1 10.2 Starting a Time-Delay Interrupt with SFC32 "SRT_DINT" 10-3 10.3 Querying a Time-Delay Interrupt with SFC34 "QRY_DINT" 10-4 10.4 Canceling a Time-Delay Interrupt with SFC33 "CAN_DINT" 10-5 [...]... .3 1-3 2 SSL-ID W#16#xy90 - DP Master System Information 3 1-3 4 SSL-ID W#16#xy91 - Module Status Information 3 1-3 6 SSL-ID W#16#xy92 - Rack / Station Status Information 3 1-4 0 SSL-ID W#16#xy95 - Extended DP Master System Information 3 1-4 3 SSL-ID W#16#xyA0 - Diagnostic Buffer .3 1-4 5 SSL-ID W#16#00B1 - Module Diagnostic Information 3 1-4 6 SSL-ID W#16#00B2 - Diagnostic Data Record 1... the System Status Lists (SSL) 3 1-1 Structure of a Partial SSL List 3 1-3 SSL-ID 3 1-4 Possible Partial System Status Lists .3 1-5 SSL-ID W#16#xy11 - Module Identification 3 1-6 SSL-ID W#16#xy12 - CPU Characteristics 3 1-7 SSL-ID W#16#xy13 - Memory Areas 3 1-9 SSL-ID W#16#xy14 - System Areas 3 1-1 0 SSL-ID W#16#xy15 - Block Types 3 1-1 2 SSL-ID... .3 2-1 8 System Software for S 7-3 00/400 System and Standard Functions A5E0026141 0-0 1 xv Contents 33 List of SFCs, and SFBs 33.1 33.2 33.3 33.4 3 3-1 List of SFCs, Sorted Numerically 3 3-1 List of SFCs, Sorted Alphabetically .3 3-4 List of SFBs, Sorted Numerically 3 3-7 List of SFBs, Sorted Alphabetically .3 3-9 Bibliography Glossary Index xvi System Software for S 7-3 00/400 System and. .. .3 2-4 Event Class 4 - Stop Events and Other Mode Changes .3 2-7 Event Class 5 - Mode Run-time Events 3 2-1 0 Event Class 6 - Communication Events 3 2-1 1 Event Class 7 - H/F Events 3 2-1 2 Event Class 8 - Diagnostic Events for Modules 3 2-1 4 Event Class 9 - Standard User Events 3 2-1 6 Event Classes A and B - Free User Events 3 2-1 7 Reserved Event Classes .3 2-1 8... 1-6 Automatic start of the time-of-day interrupt This occurs once you have set and then activated the time-of-day interrupt with STEP 7 The following table shows the basic possibilities for activating a time-of-day interrupt with STEP 7 You set the time-of-day interrupt by calling SFC28 "SET_TINT" and then activate it by calling SFC30 "ACT_TINT." System Software for S 7-3 00/400 System and Standard Functions. .. 2 3-7 Counting Down with SFB1 "CTD" 2 3-8 Up / Down Count with SFB2 "CTUD" 2 3-9 System Software for S 7-3 00/400 System and Standard Functions A5E0026141 0-0 1 xiii Contents 24 IEC Functions 24.1 24.2 24.3 24.4 24.5 24.6 24.7 24.8 24.9 24.10 24.11 25 2 7-1 Controlling Operation in H systems with SFC90 "H_CTRL" 2 7-1 2 8-1 SFB29 (HS_COUNT) 2 8-1 SFB30 (FREQ_MES) 2 8-3 SFB38... start event for the next interval occurs The operating system calls OB80 If OB80 is not programmed, the CPU changes to the STOP mode If OB80 is loaded, both OB80 and the time-of-day interrupt OB are first executed and then second the requested interrupt is executed 1-8 System Software for S 7-3 00/400 System and Standard Functions A5E0026141 0-0 1 Organization Blocks Local Data for Time-of-Day Interrupt... 2 4-1 9 Converting Data Type Formats 2 4-2 4 SFBs for Integrated Control 25.1 25.2 25.3 25.4 26 2 4-1 3 0-1 Overview of the Structure of Diagnostic Data 3 0-1 Diagnostic Data .3 0-2 Structure of Channel-Specific Diagnostic Data .3 0-4 System Software for S 7-3 00/400 System and Standard Functions A5E0026141 0-0 1 Contents 31 System Status Lists (SSL) 31.1 31.2 31.3 31.4 31.5... time-of-day interrupt OB is first executed System Software for S 7-3 00/400 System and Standard Functions A5E0026141 0-0 1 1-7 Organization Blocks Conditions That Affect Time-of-Day Interrupt OBs Since a time-of-day interrupt occurs only at specified intervals, certain conditions can affect the operation of the OB during the execution of your program The following table shows some of these conditions and. .. Data of a DP Slave with SFC13 "DPNRM_DG" (Slave Diagnostics) 1 6-1 4 Reading Consistent Data of a DP Standard Slave with SFC14 "DPRD_DAT" 1 6-1 8 Writing Consistent Data to a DP Standard Slave with SFC15 "DPWR_DAT" 1 6-2 0 System Software for S 7-3 00/400 System and Standard Functions A5E0026141 0-0 1 xi Contents 17 SFCs for Global Data Communication 17.1 17.2 18 18.2 18.3 18.4 19 19.2 19.3 . (STL) for S 7-3 00/400 manuals • Standard and System Functions for S 7-3 00/400 Provides reference information and describes the programming languages LAD, FBD, and STL, and standard and system. "CTUD" 2 3-9 Contents System Software for S 7-3 00/400 System and Standard Functions xiv A5E0026141 0-0 1 24 IEC Functions 2 4-1 24.1 Overview 2 4-1 24.2 Technical Data of the IEC Functions 2 4-3 24.3. 1 0-4 10.4 Canceling a Time-Delay Interrupt with SFC33 "CAN_DINT" 1 0-5 Contents System Software for S 7-3 00/400 System and Standard Functions A5E0026141 0-0 1 xi 11 SFCs for Handling