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.



Zoran M. Dukic was born in Kraljevo, Serbia in 1953. He was Winner of the Yugoslavian National High School Physics Competition in 1971 and graduated in 1972. In 1978, he graduated from the Faculty of Electronics at the University of Nis. Zoran began his professional career at the Ei Radio Tube Factory, continued at the Ei Radio Acoustics Factory, and ended as Deputy General Director of Ei Holding Corporation. He is an external expert associate at the Faculty of Electronics in Nis (quantum and optical electronics).