You're reading from PLCs for Beginners An introductory guide to building robust PLC programs with structured text

Product type Paperback

Published in May 2024

Publisher Packt

ISBN-13 9781803230931

Length 380 pages

Edition 1st Edition

Languages

PLC programming

Tools

PLC

Concepts

PLC Programming

Author (1):

M. T. White

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Table of Contents (25) Chapters

Preface

1. Part 1: Basics of Computer Science for PLC Programmers FREE CHAPTER

2. Chapter 1: Computer Science Versus Automation Programming

3. Chapter 2: PLC Components – Integrating PLCs with Other Modules

4. Chapter 3: The Basics of Programming

5. Chapter 4: Unleashing Computer Memory

6. Chapter 5: Designing Programs – Unleashing Pseudocode and Flowcharts

7. Chapter 6: Boolean Algebra

8. Part 2: Introduction to Structured Text Programming

9. Chapter 7: Unlocking the Power of ST

10. Chapter 8: Exploring Variables and Tags

11. Chapter 9: Performing Calculations in Structured Text

12. Chapter 10: Unleashing Built-In Function Blocks

13. Chapter 11: Unlocking the Power of Flow Control

14. Chapter 12: Unlocking Advanced Control Statements

15. Chapter 13: Implementing Tight Loops

16. Part 3: Algorithms, AI, Security, and More

17. Chapter 14: Sorting with Loops

18. Chapter 15: Secure PLC Programming – Stopping Cyberthreats

19. Chapter 16: Troubleshooting PLCs – Fixing Issues

20. Chapter 17: Leveraging Artificial Intelligence (AI)

21. Chapter 18: The Final Project – Programming a Simulated Robot

22. Assessments

23. Index

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24. Other Books You May Enjoy

Common PLC modules

As could be deduced from the last section, a modular PLC is not a singular unit. PLCs are composed of many different modules that, when integrated together, form the PLC. Many different modules do many different things; however, all PLCs have a select few modules that perform the same functionality across all brands. This section will be dedicated to exploring some of those modules. With that, let us explore the power supply module!

Power supply

As everyone knows, electronic devices require electrical power of some type. PLCs require a stable power supply to function properly. Most PLCs utilize a 24VDC power supply. Depending on the PLC brand, the power supply will either be a module that attaches to the PLC in some way or it will be directly wired to the PLC. Of all the modules, the power supply is probably the easiest to comprehend. Let us now explore what a PLC chassis is.