Control System Changes Over The Last Five Decades

In part four of this series we will look at modern control systems from both their beginnings, as well as, the progress to what they are capable of at present day. Today’s engineer can typically work on multiple systems on...

The Move from Analog to Digital Control Systems

As we entered the twentieth century, the invention of electricity created previously unknown possibilities to modern technology. Generators and the utility industries began to light city streets as well as homes. On/Off controls were installed in manufacturing facilities and production...

The Industrial Revolution and Control Systems

Moving on from "Ancient Times" (covered in my previous article here) we enter what is known as the "Common Era" (CE.) In the intervening years, humanity made slow progress for what most refer to as “The Dark Ages,” during which...

Ancient Engineering and Control Systems

We live in an astonishing period of history. As technology heightens to new levels with accelerating speed, it is vital for today’s engineer to remember the past, focus on the current and prepare for the future. Like everything in life,...

An E300 Overload Module in a Studio 5000 Application

In a previous article I discussed setting the dip switches, applying 24 VDC power,  and using a web browser to modify the configuration in an Allen Bradley E300 Module. In this article, I want to go a bit further and...

Getting Started with an A-B E300 Overload Module

When I was hired at my first professional job in September of 2000, I would soon learn that the facility I was being hired at would undergo a very large expansion in the next nine months. One aspect of that...

ControlLogix Function Block Totalizer

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In this article I'll introduce you to the basics of a ControlLogix Function Block Routine Totalizer Instruction. If you have ever used any Allen-Bradley software, you are familiar with their ladder logic programming. In many of the earlier systems such as...

How To Register A Thing In AWS IoT

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In our last article we learnt about the architecture of our IoT system, to continue with our series in this article we will learn how to register a “Thing” on AWS IoT, which is required to use IoT services...

Setting the Password in Your Stratix Switch

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One of the things I love the most about working with industrial control systems in the OT (Operational Technology) environment is that you never do the same thing every day. One day you may be troubleshooting operational issues, and the...

Capture and Average a Value with FFL, FFU, and AVE Instructions

In a previous article regarding ControlLogix processor faults, I mentioned one of the ways a processor can be faulted was by causing an array to go out of bounds when using an FFL and FFU instruction. These instructions are commonly...