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Tutorial: Using a Beckhoff IPC for Analog and Integer Data

Tutorial: Using a Beckhoff IPC for Analog and Integer Data

Gathering and manipulating process data is, perhaps, the most significant advantage of digital controllers. Beckhoff IPCs gather, process, and integrate data with high-level systems in one platform.


Tutorial: First PLC Program with a Beckhoff IPC

Tutorial: First PLC Program with a Beckhoff IPC

These days, the industrial PC (IPC) is changing the way that engineers approach control logic solutions. Learn how to set up a basic project in a Beckhoff IPC using structured text programming.


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.


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.


All About PLCs: Networking and Communications

All About PLCs: Networking and Communications

Learn about the modules and systems that provide a network connection to the outside world, transforming traditional PLCs into true, modern process automation controllers (PAC).


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?


All About PLCs: Input/Output Modules

All About PLCs: Input/Output Modules

If your facility or workplace uses a PLC, it’s almost certainly because it must interface with physical input and output devices. What kinds of I/O modules exist, and how can you tell the difference?


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.


PLC With a Miniature Twist: Crouzet Millenium Slim Tutorial

PLC With a Miniature Twist: Crouzet Millenium Slim Tutorial

One of the smallest PLCs on the market, the Millenium Slim by Crouzet, can handle advanced functions with a wireless interface and function block (FBD) style IEC 61131 programming.


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.


How To Read Ladder Logic in PLC and Relay Controls, Part 1: Inputs

How To Read Ladder Logic in PLC and Relay Controls, Part 1: Inputs

Ladder logic is an industrial control systems legend stemming from electrical line diagrams before the days of PLCs. Although logical, they are difficult to interpret.


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.


How To Read Ladder Logic in PLC and Relay Controls, Part 2

How To Read Ladder Logic in PLC and Relay Controls, Part 2

Ladder logic is an industrial control systems legend stemming from electrical line diagrams before the days of PLCs. Although logical, they are difficult to interpret.


All About PLCs: The CPU

All About PLCs: The CPU

Learn all about the central processing unit (CPU): the built-in module inside the PLC responsible for executing the program and communicating with external devices.


Using Structured Text in OpenPLC | Warning Simulator Tutorial

Using Structured Text in OpenPLC | Warning Simulator Tutorial

With a C++ extension, monitoring of status and warning messages can easily be displayed with OpenPLC. Arduino PLC variables can then be observed using a serial terminal or monitor.


How-To: BRX PLC Programming With Digital I/O

How-To: BRX PLC Programming With Digital I/O

Learn how to use an AutomationDirect BRX PLC with the Do-more Designer software. This tutorial will cover discrete I/O commands along with basic timing and counting ladder functions.


How To: Use ControlByWeb’s I/O Controller for Web-Based Logic

How To: Use ControlByWeb’s I/O Controller for Web-Based Logic

Logic is critical for industrial control, and it usually looks like ladders, function blocks, or structured text. I/O controllers are designed to automate simple logic tasks and data functions.


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.