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Comparing SLC and ControlLogix PLCs: An In-Depth Review

Comparing SLC and ControlLogix PLCs: An In-Depth Review

The SLC 500 PLC family dominated automation control for well over thirty years and now, with the recent discontinuation of most of the series, we look at the differences between SLC and modern Logix PLCs.


Machine-to-Machine Integration with OPC UA

Machine-to-Machine Integration with OPC UA

The OPC UA protocol is designed to solve two problems in automation: interoperability between device vendors and independence from incompatible transport layer differences.


Electromagnetic Flowmeters | Using Magnetic Force to Sense Fluid Flow

Electromagnetic Flowmeters | Using Magnetic Force to Sense Fluid Flow

This article takes an in-depth look at how magmeters work, the different types of magmeters, and useful equations for calculating flow rates using a magmeter.


Info Byte: Normally Open vs. Normally Closed: What Does It Mean?

Info Byte: Normally Open vs. Normally Closed: What Does It Mean?

Some terminology, like 'normally open' and 'normally closed' switch contacts, is common throughout industry but can still be confusing, misleading, or even hazardous if not properly understood.


Control According to Webster: Defining a Motion Axis

Control According to Webster: Defining a Motion Axis

Before tuning a motion axis, you must define the axis. If the control system doesn’t understand the axis properties or specifications, it can’t be expected to effectively complete the tuning process.


Understanding I/O Terminal Types And When To Use Them

Understanding I/O Terminal Types And When To Use Them

Embedded, modular, panel mount, distributed, machine mount, and remote, oh my! What does it all mean, and how are you supposed to know which one to choose for your application?


Introduction to Codes and Standards for Instrumentation and Controls Engineers

Introduction to Codes and Standards for Instrumentation and Controls Engineers

Regardless of industry, codes and standards developed by organizations including ISO, ANSI, and IEEE are an integral part of the environment in which we work and have a major influence on engineering and design.


Fundamentals of Grounding and Safety: Protecting People and Equipment

Fundamentals of Grounding and Safety: Protecting People and Equipment

Electrical grounding is used to accomplish several different tasks, but none more important than for the safety of users and equipment while maintaining strict adherence to regulations.


All About PLCs: The Power Supply Unit

All About PLCs: The Power Supply Unit

Learn all about the power supply: modular and built-in devices that deliver electricity to the PLC backplane and modules, and learn the difference between control and field device power delivery.


A Polarizing Discussion: Using Diodes The Right Way Around

A Polarizing Discussion: Using Diodes The Right Way Around

Some devices, like switches, are non-polar; you can connect them in either direction. What makes diodes so special, and how can you tell the right way from the wrong way?


Build A Low-Cost 32-bit PLC | OpenPLC and the ESP32 Microcontroller

Build A Low-Cost 32-bit PLC | OpenPLC and the ESP32 Microcontroller

Besides using a Raspberry Pi or an Arduino Uno, a low-cost PLC can be built using the popular ESP32 microcontroller. The OpenPLC software supports this popular 32-bit platform.


Reversing the Rotation of an Industrial 3-Phase Motor

Reversing the Rotation of an Industrial 3-Phase Motor

Many online sources explain how to reverse a 3-phase motor; this article will discuss the electrical principles that define why it works and how the phase relationships determine the rotation direction.


AI Algorithms Used in Predictive Maintenance

AI Algorithms Used in Predictive Maintenance

No doubt you have heard all about the use cases of AI and predictive maintenance. Learn about the algorithms that are actually used to provide analysis and insights based on industrial data sets.


Electrical Instruments and Gauges: Connection and Configuration

Electrical Instruments and Gauges: Connection and Configuration

In any process industry, transducers are the basic instrumentation unit for continuous monitoring of system variables that provide inputs for control system algorithms and outputs.


Industrial Maintenance: How AI Can Predict Failures Before They Happen

Industrial Maintenance: How AI Can Predict Failures Before They Happen

Predicting when maintenance should occur isn’t simply a matter of getting on board with the latest trend, it can save many thousands of dollars in lost downtime and unnecessary parts and labor.


Python Tutorial Part 10 | Mathematical Functions

Python Tutorial Part 10 | Mathematical Functions

While mathematical expressions are important in any programming language, the topic of math functions addresses not just the algorithms themselves, but the design of custom functions within Python.


Introduction to Valve Sizing: A Step-by-Step Guide

Introduction to Valve Sizing: A Step-by-Step Guide

Ensure efficient and safe industrial applications with proper valve sizing. Learn how to choose the right valve size and avoid common pitfalls.


Motion Control: It’s More Than Just “Point A to Point B”

Motion Control: It’s More Than Just “Point A to Point B”

Building precise rotating or linear systems often costs a lot! When is it justified to spend the extra cost to design and build such a system, and what are the different components and system types?


Touching on Touchscreens | Capacitive vs. Resistive Technologies

Touching on Touchscreens | Capacitive vs. Resistive Technologies

Two primary technologies are used for creating touchscreens. For industrial HMIs, resistive and capacitive methods both contain certain advantages for various applications.


Python Tutorial Part 9 | Conditional Flow: For Loops

Python Tutorial Part 9 | Conditional Flow: For Loops

Learn how to use ‘for loops’ in Python to create complex, iterable tasks such as modifying lists, combining lists into dictionaries, or iterating over a dictionary.