Beginner’s Guide To PLC Programming




Beginner’s Guide To PLC Programming
How to Program a PLC (Programmable Logic Controller)
2017 Edition
by Neal Babcock
ebook price: $9.95
Adobe PDF Edition

Online PLC training and PLC tutorial that is easy to understand

Look around in any modern manufacturing facility and you will find PLCs, or Programmable Logic Controllers. You have seen all the names; Allen-Bradley®, Modicon®, Automation Direct®, Siemens® and so on. Large companies and small companies use these types of computers to automate and control their manufacturing processes.

Understanding how these PLCs work is very important to anyone who works with industrial equipment. PLC training and ladder logic training will help you in your current job or help get you the job you want. Browse CareerBuilder sometime and find all the companies looking for people who understand PLCs, PLC control and ladder logic.

Unfortunately, learning what makes a PLC tick and how to program one is usually expensive and is normally done on somebody else’s schedule.

If you understand how a PLC works, you can:

create PLC programs and edit existing relay ladder logic

make yourself worth more to your company

communicate your ideas better to your co-workers

If you have always been a bit mystified by these “black boxes”, then this PLC training manual is for you.

This PLC tutorial explains everything you need to know to get a solid understanding of PLCs and provides the most cost-effective PLC training available today.

This ebook is a PLC tutorial that is more than an introduction to PLCs and PLC control. It contains real world examples that are a result of 16 years of PLC programming experience. It contains tips and routines you can start using immediately to write your own PLC program.

To the beginner, it is more valuable than the thick and complex books written by college professors. They cover functions and algorithms you may never use. After wading through one of these, you still might not know how to turn on a motor.

The “Beginner’s Guide to PLC Programming” makes learning ladder logic easy with our online plc training. And it is written in plain English.

“Beginner’s Guide to PLC Programming” will:

define the most commonly used terms, such as rung, bit, input, output, etc.

explain relay ladder logic in simple, easy to understand terms

give you the “13 Marks of a Well Written PLC Program”

explain Machine Diagnostics and how to use them in your PLC program

save money and save time

teach you the basic knowledge you need to be a top-notch PLC programmer

introduce you to PLC control, and how it is used in plant automation

The ebook is the result of many years of experience in PLC programming, electrical design and engineering. It summarizes dozens of techniques that are needed to write a solid program.

It has easy to understand text with relay ladder logic routines that can be used again and again.

You learn how to use coils, contacts, internal bits, latches, timers, safety rungs, addressing, inputs, outputs . . . and more.

It doesn’t matter whose PLC you will be using; all graphical-based PLC programming uses Ladder Logic. Rockwell Automation (Allen-Bradley), Siemens, Modicon, or whoever, all use ladder logic. Until you understand ladder logic and the concepts of PLC control, you won’t be able to program these PLCs.

The good news is that ladder logic, and programmable logic control, is not that hard to understand. There are just a few essential concepts that you need grasp, and we will share those with you.

We know you are busy. This tutorial lets you learn when you have the time.

The ebook can be downloaded to your computer, and the tutorial can be viewed online at any time. You can learn at your own pace.

Sample Ladder Logic
With drawings and illustrations, you are guided through the steps of writing programs for PLCs and understanding PLC ladder logic. Here is a small excerpt from the book:

After the part has been moved into position, the PLC will instruct the machine to clamp the part in place. This is done by energizing OUTPUT11, which turns on solenoid SOL11. The solenoid moves the actuator, which holds the part. You will notice that the branch in the rung contains the logic to provide a manual method of holding the part for machine set-up and maintenance.

Here is more of what you will get:



It’s best to start a program by evaluating any safety switches and setting a master bit. Then, you can use this bit throughout the program to turn off outputs immediately when the machine shuts down.

In this case, a latch is used to set an internal “System Running” bit. If the emergency stop is clear, and the machine guard is in place, and there is no system fault the operator may press the start button to set the latch. If the stop button is pushed or a previous conditions ceases to exist, the “System Running” latch will drop out.

Most of the time, the order of the bits in a rung doesn’t matter in relay ladder logic. We could have rearranged any of the bits in this rung, though we would still have to put the latch around the Start pushbutton. The PLC wouldn’t care and the output coil would still respond the same. However, to make the rung easier to read, I try to place bits from left to right in order of importance. If the E-Stop is not cleared, then nothing else should matter anyway. Having the safety guard in place is more important than a system fault. Now, if those requirements have been met, we can press the start button. And we don’t care about the stop button until we have pushed the start button.

Online Tutorial

In addition to the ebook, you also get access to an online course to let you see ladder logic in action. You learn by watching.

The online tutorial runs for about an hour. You can pause the course, review the material and put extra time into particular sections as you wish. It is available 24 hours a day, 7 days a week.

PLC training has never been more readily accessible. It’s like having your own tutor!

Click here to watch a sample of the PLC online training course. Make sure your speakers are turned on. Note that this sample may not work on some mobile devices.

It works.

“The book was very easy to understand – now I am more able to know what the programmers are talking about.”

Tom Wilson, Mechanical Designer

“I would recommend this to anyone who wants to understand the basic concepts of programming PLC ladder logic.”

Ralph Dempsey, BSEE Electrical Engineer

About the Author
Neal Babcock is an Electrical Engineer and has written and maintained dozens of PLC programs used in the semiconductor, automotive, energy and aviation industries.

Our Returns Policy Within 14 days of receipt of your download, you may return any of the items you purchased from Engineer and Technician, for any reason, for a full refund.

Free Bonus

Body Mechanics for Computer Related Duties When you order, you will also receive the ebook “Body Mechanics for Computer Related Duties”. This free informative e-pamphlet offers tips and illustrations to help you position yourself in a proper ergonomic manner when you are working on your computer. This helps you to eliminate strain and minimize the chances of repetitive stress injuries. This e-pamphlet normally sells for $5.95, but can be yours free if you purchase the “Beginner’s Guide to PLC Programming”.


The “Beginner’s Guide to PLC Programming” is the fastest and easiest way to learn how to program a PLC.

Product details

Format: Adobe PDF (ebook), Adobe Flash (tutorial)
File Size: 8714 KB
Print Length: 80 pages
Publisher: Modern Automation, LLC
Publication Date: January 29, 2017
Language: English
Text-to-Speech: Enabled, with user software
Lending: Not Enabled
Screen Reader: Adobe Reader, Apple Preview, others