S7-300/400 PLC Practical Development Guide

Author: Bian Chunyuan
Publisher:
Publish Date: 2007-01-01
Features: PLC is a new type of universal automatic control device based on microprocessor technology, electronic technology, network communication technology, and advanced and reliable industrial methods. It integrates computer technology, network communication, and automatic control technology. It has a series of advantages such as strong functionality, high reliability, flexible and convenient use, easy programming, and suitability for industrial environments. It is increasingly widely used in industrial automation, electromechanical integration, and the technological transformation of traditional industries. This book introduces the basic principles of PLC and focuses on a systematic and in-depth introduction to the hardware, instruction system, programming environment, programming methods, program structure, and communication networks of the S7-300/400 PLC. This book consists of 11 chapters. Chapter 1 introduces the development, characteristics, composition, and simple working principles of PLC; Chapter 2 analyzes the hardware system and internal resources of the S7-300/400 series PLC; Chapter 3 introduces the addressing methods and instruction system of the S7-300/400 series PLC, and focuses on explaining the use of statement list and ladder diagram instructions with examples; Chapter 4 introduces the programming environment of STEP 7 software and the content and methods of PLC application system design; Chapter 5 introduces the programming methods using STL, LAD, and FBD; Chapter 6 introduces data structures and user program structures; Chapter 7 systematically introduces the communication network system of the S7-300/400 series PLC after explaining the basic principles of PLC network communication; Chapter 8 introduces the hardware, communication protocols, and network configuration of the PROFIBUS communication network; Chapter 9 introduces the hardware, protocols, and applications of point-to-point communication; Chapters 10 and 11 provide numerous application examples. This book is suitable for beginners, as well as serving as a technical reference for engineering professionals and a textbook for undergraduate and graduate students in relevant fields at universities.