PLC Programming Using RSLogix 500 & Real World Applications
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PLC Programming Using RSLogix 500 & Real World Applications

Learn Ladder Logic Concepts Step by Step with Real Industrial Applications

About the Book

How this Book can Help You:

This book is aimed at students, electricians, technicians and engineers who want to learn PLC programming from scratch. It covers the fundamental knowledge they need to start writing their very first ladder logic program on RSLogix 500. It also covers some advanced knowledge of PLCs they need to become experts in programming PLCs.

After reading this book, you should have a clear understanding of the structure of ladder logic programming and be able to apply it to real world industrial applications.

The best way to master PLC programming is to use real world situations to practice. The real-world scenarios and industrial applications taught in this book will help you to learn better and faster many of the functions and features of the RSLogix 500 using programmable logic controllers.

The methods presented in this book are those that are usually employed in the real world of industrial automation, and they may be all that you will ever need to learn. The information in this book is very valuable, not only to those who are just starting out, but also to anybody looking for a way to improve their skills in PLC programming.

Merely having a PLC user manual or referring to its help contents is far from sufficient in becoming a skillful PLC programmer. Therefore this book is extremely useful for building PLC programming skills. First, it will give you a big head start if you have never programmed a PLC before. Then it will teach you more advanced techniques you need to learn, design and build anything from simple to complex programs on the RSLogix 500 platform.

One of the questions I get quite often is, where can I get a free download of RSLogix 500 to practice? I provide in this book links to a free version of RSLogix 500 and a free version of RSLogix Emulate 500 for simulating real PLCs. So you don’t even need to buy a PLC to learn, run and test your ladder logic programs.

I do not only show you how to get these important Rockwell Automation software for free and without hassle, I also show with crystal-clear screenshots how to install, configure, navigate and use them to write ladder logic programs.

About the Author

A. B. Lawal
A. B. Lawal

I am multi-talented. As a computer engineer and a computer scientist, I have over 15 years of teaching experience in software development and computer hardware architecture. I am the CEO of Ojula Technology Innovations, a book publishing company. I co-publish my books with Charles H. Johnson who also offers technical assistance to my company. In the last few years I have helped the IT industry develop various useful programs on Windows, MacOS and PLCs (programmable logic controllers).

I always build solutions from scratch and go as far as modifying open source software to meet my client’s needs. As an embedded systems expert, I design embedded Systems that optimize performance and cost against complex requirements. I leverage Stratify OS (a POSIX like RTOS for micro-controllers) to quickly and cost-effectively develop complex firmware applications in Python and C/C++ languages. I work with a dedicated team of Python programmers who look into specific automation problems and proffer solutions to them.

For any inquiry, you can contact us with any of the email addresses below any time. If you want to contribute your knowledge to this website, or if you have a request, just send us your message. We promise to do our best to help.

Bolakale Aremu (CEO), Founder,

Charles H. Johnson (Co-publisher and Technical Assistant)

Table of Contents

  • How this Book can Help You
  • 1. Introduction to PLCs
  • 1.1 Difference between PLC & Microprocessor
  • 1.2 The 6 Main Components of PLC
  • 1.3 What is the IEC 61131-3 Standard?
  • 1.4 Difference between PLCs and PACs
  • 1.5 PLC Memory Mapping & I/O Addressing
  • 1.5.1 PLC Memory Map
  • 2. Introduction to Ladder Logic Generic Terms & Techniques
  • 2.1 The Dialects of PLCs (Rung, XIC, XIO, OTE, OTL, & OTU)
  • 2.2 Understanding Ladder Logic Diagrams, Basics and Variables
  • 2.2.1 How to Draw Equivalent Ladder Logic of the Hard-wired Logic
  • 2.2.2 Understanding PLC Timers (TON, TOF & RTO)
  • 2.2.3 Understanding PLC Counters (CTU, CTD & RES)
  • 2.2.4 Data Transfer Instructions: MOV Command
  • 2.2.5 Arithmetic Commands: ADD Command
  • 2.2.6 Data Manipulation Instructions: MCR Command
  • 2.2.7 Program Control Instructions: JSR Command
  • 2.2.8 Editing & Deleting A Ladder Logic
  • 2.3 Understanding PLC Scan Operation
  • 3. Getting Started with RSLogix 500
  • 3.1 How to Order & Download RSLogix 500
  • 3.2 How to Download Free Versions of RSLogix Micro Starter Lite & RSLogix Emulate 500
  • 3.3 How to Install & Configure RSLogix 500 Platform
  • 3.3.1 How to Configure RSLinx
  • 3.4 How to Write Ladder Logic on RSLogix 500 Platform
  • 3.4.1 AND Logic in Ladder
  • 3.4.2 OR Logic in Ladder
  • 3.4.3 NOT Logic in Ladder
  • 3.4.4 How to Create New Ladder Logic Project in the RSLogix Micro Starter
  • 3.5 How to Test Your Ladder Logic with RSLogix Emulate 500
  • 3.5.1 Steps to Scan & Test Your Ladder Logic
  • 3.6 Real-World Scenario 1: An Example & Usage of OTL Instruction
  • 3.7 Real-World Scenario 2: An Example & Usage of OTU Instruction
  • 4. Real World Application 1: Automated Drill Press Control
  • 4.1 Statement of the Problem
  • 4.2 The Sequence of Operation
  • 4.3 The Operator Station
  • 4.4 The I/O Listing
  • 4.4.1 Inputs
  • 4.4.2 Outputs
  • 4.4.3 Internal Coils
  • 4.5 Ladder Logic Program for the Drill Press
  • 5. Using Allen-Bradley’s RSLogix Format to Write Ladder Logic for the Automated Drill Press
  • 5.1 Difference between Generic Ladder Logic Format and the RSLogix’s format
  • 5.2 RSLogix500 Project Report for the Drill Press Program
  • 6. Real World Application 2: A 3-Way Traffic Light Control System
  • 6.1 Statement of the Problem
  • 6.2 Sequence of Operation
  • 6.3 Table of Inputs & Outputs for the Traffic Control System
  • 6.4 Ladder logic Diagram for the Traffic Control System
  • 6.5 How to Write the Ladder Logic in RSLogix 500
  • 7. How to Write Valuable Ladder Logic Programs for the Automation Industries
  • Other Helpful Books
  • Conclusion
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