Introduction to Programmable Controllers (SIMATIC S7-200)

Author: Zhong Zhaoxin Wang Hao
Publisher:
Publish Date: 2003-07-01
Features: Programmable controllers (PLC) are the most important, reliable, and widely used industrial control devices today. In addition to essential arithmetic functions, they can form comprehensive control systems including logic control, process control, data acquisition and control, graphical workstations, etc. This book introduces the origin and development of programmable controllers and takes the Siemens S7-200 series PLC as an example to explain the working principles, structural features, basic instructions, and programming methods of programmable controllers. It emphasizes the powerful instruction system capable of performing arithmetic/logic operations, program flow control, high-speed processing, data table processing, PLD processing, data format conversion, communication, etc., accompanied by programming examples demonstrating these functionalities. By introducing high-speed output functions, the application of integrated analog channels, and practical examples of network communication, the book illustrates engineering design methods.