Blog Archives

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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Posted in PLCs

Ladder Logic 402: Data Manipulation and Filtering

In last weeks’ post, I discussed acquiring data using a PLC to capture values from an analog card. I showed some fairly straightforward methods of capturing data using FIFO methods, averaging data values, and how some of the ladder logic

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Posted in PLCs, Software & Programming

Ladder Logic 104: Memory Organization

One of the first decisions that needs to be made when designing a PLC system is memory allocation and organization. In the early years of the PLC memory came at a premium… 1K (one kilobyte) of memory for the program

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Posted in PLCs, Software & Programming

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

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Posted in Vendors and Manufacturers

Dynamic (Indirect) Addressing

Today’s post is another guest article, this one written by Steve Myres. Steve owns Automation Solutions, a controls integration company that also provides machine mechanical, electrical, and fluid power troubleshooting and design. ************************************************************ Dynamic addressing In this article, I’ll describe

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Posted in Automation Concepts, Guest Posts, PLCs, Software & Programming

Automation Direct (Koyo) PLCs

This post is a continuation of a series I started a couple of weeks ago on PLC platforms. So far I have covered Allen-Bradley and Siemens, this week I am going to discuss the Automation Direct and Koyo platform. Koyo

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Posted in Controllers, PLCs, Software & Programming, Vendors and Manufacturers

PLC Manufacturer Rankings

After spending the last couple of weeks teaching PLC programming, I decided to do a little research on the popularity of the different manufacturer’s platforms worldwide. I have been asked many times in the past who the biggest, most popular,

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Posted in Controllers, Vendors and Manufacturers

Which Platform Should I Use?

When I worked for automation distributors I was required to promote and recommend only the products that the distributor sold. This sometimes caused a conflict of interest: is this the most appropriate solution for this application?  The first distributor I

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Posted in Controllers, Software & Programming, Vendors and Manufacturers
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