This book offers a structured and practical approach to modern PLC development using object-oriented principles. It is a guide for engineers, programmers, and students seeking to harness the power of object-oriented programming (OOP) in the context of industrial automation with PLCs.

The content focuses on the CODESYS development environment and Structured Text (ST), both of which support modern programming techniques while maintaining compatibility with real-time automation requirements. Through step-by-step demos and instructional examples, it demonstrates how modular, reusable code can enhance development efficiency, simplify ongoing maintenance, and enable scalable and flexible control system architectures.

Key topics include:

• Structured Text fundamentals: conditions, loops, arrays, and functions
• Object-oriented concepts: classes, methods, and inheritance
• Advanced techniques: polymorphism, interfaces, and access control
• Modular design with reusable components and structured program flow
• Implementation of finite state machines and scalable application design
  Built around instructional demos and clear explanations, this book helps readers develop maintainable and modern control software in the CODESYS environment using proven programming techniques.

Autorentext
Dr. Majid Pakdel earned his bachelor's degree in electrical-telecommunications engineering from Amirkabir University of Technology, Tehran, in 2004. He completed a master's degree in electrical power engineering at Isfahan University of Technology in 2007, and a Ph.D. in the same field from the University of Zanjan in 2018. During his Ph.D. studies, between 2015 and 2016, he was a visiting student at the Department of Energy Technology at Aalborg University. In 2023, he obtained a second master's degree in computer engineering, specializing in artificial intelligence and robotics, from Malek Ashtar University of Technology, Tehran. Dr. Pakdel has authored more than 20 research papers and 10 technical books in electrical engineering and computer science.