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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.


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.


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?


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.


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.


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.


Seal-In Ladder Logic vs. Latching/Unlatching PLC Commands

Seal-In Ladder Logic vs. Latching/Unlatching PLC Commands

An age-old debate in PLC programming: investigating the uses and caveats of latching software commands versus seal-in ladder logic for industrial control applications.


Tutorial: Analog Signals with Phoenix Contact’s PLCnext Platform

Tutorial: Analog Signals with Phoenix Contact’s PLCnext Platform

Learn how to connect analog inputs, either voltage or current, to the Phoenix Contact’s IIoT PLC platform and design simple data processing programs with the PLCnext Engineer IDE.


How-to: Programming Discrete I/O With a Koyo DirectLOGIC PLC

How-to: Programming Discrete I/O With a Koyo DirectLOGIC PLC

Learn how to use DirectSOFT6 to program discrete I/O functions in a Koyo DirectLOGIC PLC. Although these PLCs are older, they are found in many existing automation installations.


Setting IP Address and Networking Parameters on a PowerFlex VFD

Setting IP Address and Networking Parameters on a PowerFlex VFD

Parameters control the operation and command sources for VFDs. The PowerFlex series from Rockwell Automation is no exception. Learn how to adjust the parameters for networking and IP configuration.


DCS vs. SCADA: What’s the Difference?

DCS vs. SCADA: What’s the Difference?

Controlling and optimizing plant processes is the goal of most control systems. It can be a challenge to distinguish between different types of control: a DCS or a high-level SCADA system?


Tutorial: Analog I/O Programming for AutomationDirect Productivity PLCs

Tutorial: Analog I/O Programming for AutomationDirect Productivity PLCs

Learn how to use analog I/O devices with AutomationDirect’s Productivity series of PLCs and Productivity Suite software. Wiring, configuring I/O, and programming will be a part of this tutorial.


Understanding Industrial Ethernet Connections: RJ45, Fiber, M12, and SFP

Understanding Industrial Ethernet Connections: RJ45, Fiber, M12, and SFP

Ethernet switches can use four different types of connections: RJ45, fiber, M12, and SFP. Understanding the difference can help with network troubleshooting, design, or alteration.


Temp Sensing With RTDs: Wiring Connection and Transmitter Setup

Temp Sensing With RTDs: Wiring Connection and Transmitter Setup

Learn how to measure temperature using an RTD and a temperature transmitter to convert resistance into common analog voltage or current values for process control.


Setting up Discrete Sensors: Polarity, Mode, Range, and Limits

Setting up Discrete Sensors: Polarity, Mode, Range, and Limits

Installing sensors into a manufacturing process is intended to collect data, useful in making logical true/false decisions. But what settings must be adjusted when you install these sensors?


Case Study: How One Company Saved Hours on Code Review With Version Control Software

Case Study: How One Company Saved Hours on Code Review With Version Control Software

Version control software allows manufacturers to automatically save code revisions across teams. Learn how Automation NTH leveraged this strategy to save countless hours and increase reliability.


How to Wire Motor Starters and Contactors

How to Wire Motor Starters and Contactors

This article investigates the basic components and wiring conventions for common three-phase motor starter configurations, including direct online, reversing, and star-delta.


Understanding RMS and True RMS for Meters and Mechanical Measurements

Understanding RMS and True RMS for Meters and Mechanical Measurements

Electrical and mechanical measurements are often labeled with "RMS" and "True RMS." Aside from the simple math definitions we learned in electronics class, why is this distinction actually important?