Latest PLCs Technical Articles

Previously, we described how to use the new Arduino PLC IDE to control discrete devices. This tutorial will describe how…

Previously, we described how to use the new Arduino PLC IDE to control discrete devices. This tutorial will describe how to connect various peripheral equipment (VFD and robot) using analog inputs and outputs.

Many control product manufacturers offer these downloadable ‘EDS files’ for peripheral equipment, but what exactly is…

Many control product manufacturers offer these downloadable ‘EDS files’ for peripheral equipment, but what exactly is an EDS, and how can they aid in the development of a project?

Following the release of the official Arduino PLC IDE, this tutorial will introduce programming and understanding of the…

Following the release of the official Arduino PLC IDE, this tutorial will introduce programming and understanding of the function blocks common to all IEC 61131 languages, starting with bit commands, timers, and counters.

Counting is a fundamental task for any process controller. Learn how to implement a PLC counter instruction (CTD) with an…

Counting is a fundamental task for any process controller. Learn how to implement a PLC counter instruction (CTD) with an Arduino or compatible board using the OpenPLC Ladder Diagram (LD) platform.

Learn how to make complex calculations for validating data easily with the STD instruction, and learn how to display…

Learn how to make complex calculations for validating data easily with the STD instruction, and learn how to display array sizes programmatically with the SIZE instruction.

Learn how to streamline your ladder logic by searching and sorting arrays with the FSC and SRT instructions in the…

Learn how to streamline your ladder logic by searching and sorting arrays with the FSC and SRT instructions in the Rockwell (Allen-Bradley) Studio 5000 programming software.

Learn about multi-dimensional arrays and how to work with them to perform math operations such as the AVE (Average)…

Learn about multi-dimensional arrays and how to work with them to perform math operations such as the AVE (Average) instruction in the Rockwell (Allen-Bradley) Studio 5000 programming software.

Arrays can streamline data storage and math operations, but they can be difficult to understand for a beginning…

Arrays can streamline data storage and math operations, but they can be difficult to understand for a beginning programmer. Learn the background of array instructions in the Rockwell Studio 5000 software.

Safety is one of the most critical aspects of machine design. Today, with network connections between different machines…

Safety is one of the most critical aspects of machine design. Today, with network connections between different machines and control centers, safety signals must be shared logically and reliably across networks.

Learn how to rapidly prototype an Arduino-compatible PLC automation circuit without using wires. This hands-on project…

Learn how to rapidly prototype an Arduino-compatible PLC automation circuit without using wires. This hands-on project will illustrate this PLC prototyping concept utilizing the Freenove Projects Kit board.

With the first fuzzy logic-based controllers on the market in 1983, learn how the Japanese-born automation company,…

With the first fuzzy logic-based controllers on the market in 1983, learn how the Japanese-born automation company, Omron, adopted fuzzy logic as a basis for the design of its current PLCs.

Despite the many overlaps, PLCs and RTUs are two different devices, each with specific suitable applications.

Despite the many overlaps, PLCs and RTUs are two different devices, each with specific suitable applications.

You are bound to encounter two terms associated with sensors and some loads: ‘NPN’ and ‘PNP’. You must understand…

You are bound to encounter two terms associated with sensors and some loads: ‘NPN’ and ‘PNP’. You must understand the relationship between the field device and the control module in order to choose and install components properly when needed.

PLC and other automation project software can be easier and more efficient to update and maintain thanks to the…

PLC and other automation project software can be easier and more efficient to update and maintain thanks to the introduction of Git control, already a staple for typical programming of large-scale projects.

Though not a direct replacement for PLCs, Raspberry Pi has the potential to be used in industrial automation applications…

Though not a direct replacement for PLCs, Raspberry Pi has the potential to be used in industrial automation applications for prototyping, embedded systems, and as a low-cost process controller.

Learn how to prototype an industrialized OpenPLC Arduino PLC control station concept. This hands-on project will…

Learn how to prototype an industrialized OpenPLC Arduino PLC control station concept. This hands-on project will illustrate converting a relay ladder control circuit into a Ladder Diagram (LD) program.

Raspberry Pi is a low-cost, educational single-board computer platform with the potential for industrial applications. In…

Raspberry Pi is a low-cost, educational single-board computer platform with the potential for industrial applications. In this article, we discuss the purpose of Raspberry Pi as well as its hardware and software.

Explore the design of a servo pick and place sample case using B&R Automation Studio, from the project creation to the…

Explore the design of a servo pick and place sample case using B&R Automation Studio, from the project creation to the configuration of the controller, drives, and motion axes. 

Learn how to use the boolean bitwise functions AND, OR, XOR, and NOT in your PLC programming, as well as some…

Learn how to use the boolean bitwise functions AND, OR, XOR, and NOT in your PLC programming, as well as some instructions used to change the position of bits and bytes in your INTs and DINTs.