In today’s rapidly developing industrial automation and information technology, Programmable Logic Controllers (PLC) play an indispensable role as an important industrial control device in various manufacturing processes. They are widely used in industries such as manufacturing, transportation, energy, and construction due to their high reliability, flexibility, and ease of maintenance. Siemens PLC products are widely recognized in the industry for their excellent performance and have a rich variety of application scenarios.“Illustrated Guide to Siemens PLC Programming and Practice” is a book that provides a detailed introduction to the basic knowledge of Siemens PLC programming, programming methods, system installation and debugging, and the design and implementation of control circuits in various practical application scenarios. It offers readers a comprehensive and in-depth learning reference, emphasizing the combination of theory and practice, and elaborates on the programming methods and control implementations of Siemens PLC through numerous colorful schematic diagrams, wiring diagrams, and physical images.
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Content Introduction
“Illustrated Guide to Siemens PLC Programming and Practice” systematically introduces Siemens PLC programming and control cases in a colorful illustrated manner. The content includes basic knowledge of Siemens PLC, ladder diagrams, statement tables, as well as various logic, operation, and control instructions. It also explains the meanings of instructions and control processes step by step through practical cases such as motor control, combined with numerous colorful schematic diagrams, wiring diagrams, and physical images.The book has a complete content system, a clear knowledge structure, highlights key points, and provides rich and practical cases. To facilitate readers’ learning, important knowledge points are supplemented with QR code video explanations. This book is suitable for technical personnel engaged in PLC programming and applications in the industrial control field, and can also be referenced by teachers and students in related majors at colleges and universities.
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Directory
Chapter 1 PLC Overview 11.1 Basic Knowledge of PLC 21.1.1 Basics of PLC 21.1.2 Features of PLC 41.1.3 Applications of PLC 71.2 Classification and Working Principles of PLC 91.2.1 Classification of PLC 91.2.2 Working Principles of PLC 13Chapter 2 Types and Structures of Siemens PLC 232.1 Siemens PLC Main Units 242.1.1 Main Unit of S7-200 SMART Series PLC (CPU Module) 252.1.2 Main Unit of S7-200 Series PLC (CPU Module) 262.1.3 Main Unit of S7-300 Series PLC (CPU Module) 282.1.4 Main Unit of S7-400 Series PLC (CPU Module) 302.2 Siemens PLC Expansion Modules 312.2.1 Power Module (PS) 312.2.2 Digital Input/Output Expansion Module (DI/DO) 372.2.3 Analog Input/Output Expansion Module (AI/AO) 412.2.4 Communication Module (CP) 432.2.5 Function Module (FM) 442.2.6 Interface Module (IM) 452.2.7 Other Expansion Modules 45Chapter 3 Programming Methods and Software for Siemens PLC 473.1 PLC Programming Methods 483.1.1 Software Programming 483.1.2 Programmer Programming 483.2 PLC Programming Software 513.2.1 Siemens PLC Programming Software 513.2.2 Operating Procedures of Siemens PLC Programming Software (STEP 7-Micro/WIN SMART) 53Chapter 4 Installation, Debugging, and Maintenance of Siemens PLC Systems 664.1 Installation of Siemens PLC Systems 674.1.1 Principles for Purchasing and Installing Siemens PLC Systems 674.1.2 Installation Specifications for Siemens PLC Systems 774.2 Debugging and Maintenance of Siemens PLC Systems 824.2.1 Debugging Siemens PLC Systems 824.2.2 Maintenance of Siemens PLC Systems 83Chapter 5 Usage Specifications of Siemens S7-200 SMART PLC 855.1 Features of Siemens S7-200 SMART PLC 865.1.1 Structural Features of Siemens S7-200 SMART PLC 865.1.2 Functional Features of Siemens S7-200 SMART PLC 885.2 Programming of Siemens S7-200 SMART PLC 935.2.1 LAD Editor 945.2.2 STL Editor 985.2.3 FBD Editor 102Chapter 6 Ladder Diagrams of Siemens PLC 1036.1 Structure of Siemens PLC Ladder Diagrams (LAD) 1046.1.1 Bus 1046.1.2 Contacts 1056.1.3 Coils 1056.1.4 Instruction Frames 1066.2 Programming Elements of Siemens PLC Ladder Diagrams 1076.2.1 Input Relays 1076.2.2 Output Relays 1086.2.3 Auxiliary Relays 1106.2.4 Timers 1126.2.5 Counters 1126.2.6 Other Programming Elements 112Chapter 7 Statement Tables of Siemens PLC 1147.1 Structure of Siemens PLC Statement Tables (STL) 1157.1.1 Operation Codes 1157.1.2 Operands 1157.2 Features of Siemens PLC Statement Tables 1167.2.1 Relationship Between Ladder Diagrams and Statement Tables of Siemens PLC 1167.2.2 Programming of Siemens PLC Statement Tables 118Chapter 8 Basic Logic Instructions of Siemens PLC (S7-200 SMART) 1218.1 Bit Logic Instructions of Siemens PLC (S7-200 SMART) 1228.1.1 Contact Instructions 1228.1.2 Coil Instructions 1248.1.3 Set and Reset Instructions 1258.1.4 Immediate Instructions 1268.1.5 No Operation Instructions 1288.2 Timer Instructions of Siemens PLC (S7-200 SMART) 1288.2.1 On Delay Timer Instructions 1298.2.2 Retentive On Delay Timer Instructions 1308.2.3 Off Delay Timer Instructions 1318.3 Counter Instructions of Siemens PLC (S7-200 SMART) 1328.3.1 Increment Counter Instructions 1328.3.2 Decrement Counter Instructions 1348.3.3 Increment/Decrement Counter Instructions 1348.4 Comparison Instructions of Siemens PLC (S7-200 SMART) 1368.4.1 Numeric Comparison Instructions 1378.4.2 String Comparison Instructions 139Chapter 9 Arithmetic Instructions of Siemens PLC (S7-200 SMART) 1409.1 Floating Point and Integer Arithmetic Instructions of Siemens PLC (S7-200 SMART) 1419.1.1 Addition Instructions 1419.1.2 Subtraction Instructions 1469.1.3 Multiplication Instructions 1479.1.4 Division Instructions 1489.1.5 Increment and Decrement Instructions 1509.2 Logic Operation Instructions of Siemens PLC (S7-200 SMART) 1539.2.1 Logic AND Instructions 1539.2.2 Logic OR Instructions 1549.2.3 Logic XOR Instructions 1559.2.4 Logic NOT Instructions 156Chapter 10 Program Control Instructions of Siemens PLC (S7-200 SMART) 15910.1 Control Program Instructions of Siemens PLC (S7-200 SMART) 16010.1.1 Loop Instructions 16010.1.2 Jump to Label Instructions and Label Instructions 16210.1.3 Sequential Control Instructions 16310.1.4 Conditional End Instructions and Pause Instructions 16710.1.5 Watchdog Timer Reset Instructions 16810.1.6 Get Non-fatal Error Code Instructions 16910.2 Subroutine Instructions of Siemens PLC (S7-200 SMART) 17010.3 Interrupt Instructions of Siemens PLC (S7-200 SMART) 17410.3.1 Related Meanings of Interrupts 17410.3.2 Interrupt Instructions 176Chapter 11 Data Processing Instructions of Siemens PLC (S7-200 SMART) 17911.1 Transfer Instructions of Siemens PLC (S7-200 SMART) 18011.1.1 Byte, Word, Double Word, Real Number Transfer Instructions 18011.1.2 Data Block Transfer Instructions 18211.2 Shift/Cycle Instructions of Siemens PLC (S7-200 SMART) 18411.2.1 Logic Shift Instructions 18411.2.2 Cycle Shift Instructions 18711.2.3 Shift Register Instructions 190Chapter 12 Data Conversion and Communication Instructions of Siemens PLC (S7-200 SMART) 19312.1 Data Conversion Instructions of Siemens PLC (S7-200 SMART) 19412.1.1 Data Type Conversion Instructions 19412.1.2 ASCII Code Conversion Instructions 19812.1.3 String Conversion Instructions 20312.1.4 Encoding and Decoding Instructions 20712.1.5 Segment Instructions 20912.2 Communication Instructions of Siemens PLC (S7-200 SMART) 21012.2.1 GET and PUT Instructions 21012.2.2 Send and Receive (RS-485/RS-232 as Free Ports) Instructions 211Chapter 13 Basic Program Segments of Siemens PLC 21313.1 Start-Stop Circuit 21413.1.1 Implementing Start-Stop Control with Drive Instructions 21413.1.2 Implementing Start-Stop Control with Set and Reset Instructions 21513.2 Interlock Circuits 21613.2.1 Interlock Control Composed of Normally Closed Contacts from Coils 21613.2.2 Interlock Control Composed of Normally Closed Contacts from Start Buttons 21713.2.3 Interlock Control Formed with Intermediate Relays 21813.3 Multi-location Control Circuits 21913.3.1 Single Person Multi-location Control 21913.3.2 Multi-person Multi-location Control 22013.4 Timer Circuits 22113.4.1 Timer Power-On Delay Control 22113.4.2 Counter Power-On Delay Control 22113.4.3 Timer Power-Off Delay Control 22113.5 Extended Delay Circuits 22213.5.1 Two Timers for Extended Delay Control 22213.5.2 Extended Delay Circuit Combining Timer and Counter 22313.6 Flashing Circuits 22313.7 Delay Pulse Generation Circuits 22413.8 Single Button Start-Stop Circuits 22413.8.1 Implementing Single Button Control Function with Counters 22513.8.2 Implementing Single Button Control Function with Basic Logic Instructions 225Chapter 14 Electrical Control Circuits of Siemens PLC 22714.1 PLC Control of Three-Phase AC Induction Motor Alternating Operation Circuits 22814.1.1 Electrical Structure of Three-Phase AC Induction Motor Alternating Operation Control Circuits 22814.1.2 PLC Control Principles of Three-Phase AC Induction Motor Alternating Operation Control Circuits 22914.2 PLC Control of Y-Δ Reduced Voltage Starting Circuits for Three-Phase AC Induction Motors 23114.2.1 Electrical Structure of Y-Δ Reduced Voltage Starting Control Circuits for Three-Phase AC Induction Motors 23114.2.2 PLC Control Principles of Y-Δ Reduced Voltage Starting Control Circuits for Three-Phase AC Induction Motors 23214.3 PLC Control of Reduced Voltage Starting and Reversing Braking Circuits for Three-Phase AC Induction Motors 23514.3.1 Structure of Reduced Voltage Starting and Reversing Braking Control Circuits for Three-Phase AC Induction Motors 23514.3.2 PLC Control Principles of Reduced Voltage Starting and Reversing Braking Control Circuits for Three-Phase AC Induction Motors 236
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Editor: Li Yaxiao Proofreader: Cao Shengyu Reviewer: Li Yifan