Book Image

Mastering PLC Programming

By : Mason White
Book Image

Mastering PLC Programming

By: Mason White

Overview of this book

Object-oriented programming (OOP) is a new feature of PLC programming that has taken the automation world by storm. This book provides you with the necessary skills to succeed in the modern automation programming environment. The book is designed in a way to take you through advanced topics such as OOP design, SOLID programming, the software development lifecycle (SDLC), library design, HMI development, general software engineering practices, and more. To hone your programming skills, each chapter has a simulated real-world project that’ll enable you to apply the skills you’ve learned. In all, this book not only covers complex PLC programming topics, but it also removes the financial barrier that comes with most books as all examples utilize free software. This means that to follow along, you DO NOT need to purchase any PLC hardware or software. By the end of this PLC book, you will have what it takes to create long-lasting codebases for any modern automation project.
Table of Contents (25 chapters)
1
Part 1 – An Introduction to Advanced PLC Programming
6
Part 2 – Modularity and Objects
10
Part 3 – Software Engineering for PLCs
14
Part 4 – HMIs and Alarms
19
Part 5 – Final Project and Thoughts

Why use OOP?

OOP is a staple of the modern programming world. As stated before, almost all modern applications utilize the object-oriented paradigm. When designed properly, object-oriented code will provide, but is not limited to, the following benefits:

  • Reusability: The ability to move code modules from one application to another.
  • Code maintenance: The ability to quickly fix issues that arise in the software.
  • Reduces redundant code: Code is in one place and one place only.
  • Reduces the memory usage on the controller: Since OOP reduces redundant code, it will cut down on the total memory usage.
  • Leverages design: Function blocks are usually stitched together to form complex system architectures that cannot be accomplished without the use of objects.
  • Increased productivity: Object-oriented code generally produces an overall better-quality product faster and cheaper than a non-object-oriented software system. When designed properly, the modules can be ported...