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Automating with STEP 7 in STL and SCL

ISBN: 978-3-89578-412-5
553 pages
August 2012
Automating with STEP 7 in STL and SCL (3895784125) cover image
SIMATIC is the worldwide established automation system for implementing industrial control systems for machines, manufacturing plants and industrial processes. Relevant open-loop and closed-loop control tasks are formulated in various programming languages with the programming software STEP 7.
Now in its sixth edition, this book gives an introduction into the latest version of engineering software STEP 7 (basic version) . It describes elements and applications of text-oriented programming languages statement list (STL) and structured control language (SCL) for use with both SIMATIC S7-300 and SIMATIC S7-400, including the new applications with PROFINET and for communication over industrial Ethernet. It is aimed at all users of SIMATIC S7 controllers.
First-time users are introduced to the field of programmable controllers, while advanced users learn about specific applications of the SIMATIC S7 automation system.
All programming examples found in the book - and even a few extra examples - are available at the download area of the publisher's website.

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Preface 5

Automating with STEP 7 10

Introduction 21

1. SIMATIC S7-300/400 Programmable Controller 22

2. STEP 7 Programming Software 51

3. SIMATIC S7 Program 102

Basic Functions 138

4. Binary Logic Operations 139

5. Memory Functions 149

6. Move Functions 159

7. Timer Functions 171

8. Counter Functions 187

Digital Functions 196

9. Comparison Functions 197

10 Arithmetic Functions 201

11. Math Functions 208

12. Conversion Functions 211

13. Shift Functions 216

14. Word Logic 221

Programming Flow Control 224

15. Status Bits 225

16. Jump Functions 233

17. Master Control Relay 239

18. Block Functions 243

19. Block Parameters 261

Program Processing 276

20. Main Program 277

21. Interrupt Handling 373

22. Restart Characteristics 393

23. Error Handling 409

Variables Handling 422

24. Data Types 423

25. Indirect Addressing 436

26. Direct Variable Access 449

Structured Control Language (SCL) 465

27. Introduction, Language Elements 466

28. Control Statements 478

29. SCL Blocks 483

30. SCL Functions 492

31. IEC functions 505

Appendix 513

32. S5/S7 Converter 514

33. Block Libraries 528

34. STL Operation Overview 538

35. SCL Statement and Function Overview 542

Index 545

Abbreviations 553

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Hans Berger was a very experienced developer of automation systems and software and is still just a most successful author of technical books. He has published more than 30 books on automation technology. Including all editions in English, German and Spanish, his total book record comprises more than 75 editions.
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"Automating with S7...STL/SCL" is a reference book for any EXPERT programmer using Siemens S7 PLCs. Hans Berger, the author, is the "father" of S7 PLC family (in a technical way). If you want to reach the EXPERT level, YOU MUST HAVE THIS BOOK!!!...." (ValRo, USA; Amazon, 06/2008)
"This book cover the most important tools, that Simatic Manager offers. The autor first starts with the basic concepts about the programmable controller like the process image, for update the inputs and outputs, and automation networks. The book covers the most important information about Stament List languaje that is more efficient that the ladder lenguaje and it can be very important for systems that have critical time tasks. The autor explains how the interruptions are configured and how each function is called inside the organization blocks. For people that work with PC of SIEMENS is the book that they need for consult some fundations, Actually i am developing a Tesis about Monitoring and Diagnosis Automation Systems with the Simatic Controllers at this book is my reference about the controllers (the autor explain the service of communication, one concept that many engineers dont know that exist). I am waiting the next book of the S7-1200 of Hans but in english please, i dont know german."(Amazon, Mai 2010)

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