Category: Controllers

PLCs, Computer control, DCS Systems, Microcontrollers

Panasonic PLCs

Today’s post is a guest post from my friend Tony, whose Factory Software Blog is an excellent resource for software, factory automation and… pens! Tony was a technical reviewer for my book Industrial Automation: Hands On and provides a different

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Posted in Controllers, Guest Posts, PLCs, Software & Programming, Vendors and Manufacturers Tagged with: , ,

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

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Posted in Applications, Conveyors, Load Cells, Material Handling, 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

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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

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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.

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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

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

PLC Memory

As I have mentioned previously, I have been working on a generic PLC course that I hope to release in some kind of online software format soon. I was able to test a prototype a few weeks ago with a

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Update on Projects – “Why haven’t you written more posts?”

I have been asked by a lot of readers, friends and associates lately about where I’m at on the various projects I’m involved in. There has also been an undercurrent of “why haven’t you posted lately?”, so I figured I’d

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Posted in Contribute, Me, PLCs, The Book, The Course, Training, Travel Tagged with: , , , , , ,

Ladder Logic 106: One Shots

A one shot, or “differential”, is used to develop a signal that is exactly one scan in duration. As shown in the diagram above, when a signal is applied to a contact (a Pushbutton in the diagram above), no matter

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