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

Chapter 12

What is the difference between AND and OR operators?
For the expression that contains the AND operator to evaluate to true all conditions must evaluate to true. For the expression that contains the OR operator to evaluate to true only one condition must evaluate to true.
What is the NOT operator used for?
Use to invert the logical expression’s output.
What is a nested IF statement?
An IF statement inside of another IF statement or CASE statement.
What’s the difference between ELSE and ELSIF statements?
The ELSEIF is like an extra IF statement. The ELSE is a general-purpose conditional branch that will execute when all other IF and ELSEIF statements evaluate to false.
Can a CASE statement use an ELSE statement?
Yes.
Can an ELSE statement accept a logical expression?
No.
What is the truth table for an XOR statement?

...

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Authors (1)

M. T. White

M. T. White has been programming since the age of 12. His fascination with robotics flourished when he was a child programming microcontrollers. He holds an undergraduate degree in mathematics, a master's degree in software engineering, and an MBA in IT management. He is currently working as a software developer for a major US defense contractor and is an adjunct CIS instructor, where he teaches Python, C, and an array of other courses. His background mostly stems from the automation industry where he programmed PLCs and HMIs for many different types of applications. He has programmed many different brands of PLCs over the years and has developed HMIs using many different tools. Other technologies that he is fluent in include Linux, Ansible, Docker, AWS, C#, Java, and Python. Be sure to check out his channel AlchemicalComputing on YouTube.

See other products by M. T. White