PLC Principles and Applications

Author: Li Changjiu
Publisher:
Publish Date: 2006-09-01
Features: This book is based on practical engineering applications and teaching needs. It first briefly introduces basic knowledge such as common low-voltage electrical appliances, relay-contactor control systems, and the drawing of electrical control system diagrams. Then, using the Siemens S7-200 series PLC as a background, it explains the working principles, system characteristics, hardware composition, instruction system, programming languages, and program structure of PLCs. On this foundation, based on the author's extensive experience in PLC system design and debugging, it focuses on introducing the software and hardware design and debugging of PLC systems. Finally, it summarizes the design of PLC control systems in the form of examples. The content of this book is presented from simple to complex, emphasizing the combination of theory and practical application, with all examples being engineering cases. The book not only introduces the application of PLCs in on/off control and analog control systems but also covers technologies such as PLC network communication, fieldbus, and human-machine interfaces. This book can be used as a textbook for industrial automation, electrical engineering and automation, mechatronics, computer applications, and related majors in higher vocational colleges and applied undergraduate colleges. It can also serve as a training textbook for industrial automation technicians and a self-study reference book.