Category: PLCs

Automation Direct Field Trip!

Last week I had the privilege of visiting Automation Direct near Atlanta. I was hosted by Chad Crowe, who does online marketing and social media for the company. He contacted me a month or so ago after my post on

Posted in Vendors and Manufacturers Tagged with: , , , ,

Idec PLCs

Today’s post continues the series on PLC platforms started last year. This is another guest post from Steve Myres, who also wrote an article on Indirect Addressing. Articles in this series include Allen-Bradley, Siemens, Koyo and Panasonic platforms. I wrote

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PLC Articles – Software and Hardware

Since I started this blog in early 2011 I have written a lot of articles on PLCs. The PLC is a major part of many industrial facilities and machines, and indeed has been an important part of my career. Now

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Ladder Logic 105 Scanning Solution

Last week I posted a fairly straightforward question at the end of my post on PLC Scanning. I then shared the post on Linked In as well as on my company’s Facebook page. One reason I share these posts on

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My New Trainers!

Well, its official. I have my first actual PLC trainers, in addition to the ones on the wall in My Little Factory. I think they’re awesome! They did take 8 weeks to build, but as more are made I think

Posted in My Little Factory, PLCs, Trainers, Training Tagged with: , , , ,

Ladder Logic 208: System Routine 2

Today’s post is a continuation of the series on PLC Ladder Logic I started several years ago; for more of these post click on the PLC tab at the top of the site. In particular this continues my discussion of

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Today’s post, as promised last week, is written by Ryan McCarthy, a reader of this blog. While I always offer to place a reciprocal link to the website of whoever contributes guest posts to this site, amazingly Ryan is neither

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My Little Factory – April 2017

This post is the first in a series I am writing about a project I am working on, hence the “April 2017” designation. As most of my regular readers know, I have spent much of the past several years teaching

Posted in Applications, Conveyors, Load Cells, Material Handling, My Little Factory, PLCs, Pneumatics, Process, Sensors, The Course, Training, vision Tagged with: , , , , , , , , , , , , ,

Birth of the Programmable Controller

Today’s post is extracted from my new “generic” PLC course manual, PLC Hardware and Programming – Multi-Platform. In the manual, I also cover the origins of the computer, beginning with the Babbage Analytical Engine, all the way back in 1823!

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Ladder Logic 305: ASCII and Strings

Today’s post covers ASCII, string manipulation and how to deal with readable text in a PLC. The picture above is from a ControlLogix program (Allen-Bradley, RSLogix5000 v.16) I wrote back in 2006. The program communicated with a PC-based Cognex machine

Posted in PLCs, Software & Programming, The Book Tagged with: , , , , ,

The Difference Between PLCs and Computers

What makes a PLC different from a typical computer? After all, computers are used to control things, they can even run a software PLC. This short video is part of the introduction to a new training course I am producing

Posted in PLCs, Training Tagged with: ,

PLC Hardware and Programming – Multi-Platform Manual

Over the past few months I’ve mentioned that I am working on a new online course for PLC’s. Almost a month ago I posted a request for pictures due to some of the publisher restrictions on that sort of thing.

Posted in PLCs, The Course Tagged with: , , ,

Advantages of Re-Usable Code

Recently I’ve seen some good discussions on PLCs (Programmable Logic Controllers) vs. PACs (Programmable Automation Controllers), and it got me thinking about what really differentiates the two. Some have said that it is having a more powerful processor, or more

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I Need PLC Pictures!

For the last few months I have been working (slowly) on my new PLC course. Before getting too far into the videos on the Thinkific site, it made sense to me to complete a training manual. Well, I completed the

Posted in PLCs, The Book, The Course Tagged with: ,