Latest PLCs Technical Articles

Learn how to install and program analog modules into Rockwell’s hardware and software environments using a CompactLogix…

Learn how to install and program analog modules into Rockwell’s hardware and software environments using a CompactLogix PLC and Studio 5000.

IIoT is a daunting topic due to ambiguous interactions of hardware and software. This article outlines the basic steps to…

IIoT is a daunting topic due to ambiguous interactions of hardware and software. This article outlines the basic steps to use an MQTT broker to collect the number of cycles from a pneumatic cylinder for PM software.

DC motors are an old technology still commonly used in industry. This hands-on article shows how to implement a Count Up…

DC motors are an old technology still commonly used in industry. This hands-on article shows how to implement a Count Up (CTU) counter on an Arduino OpenPLC Simulator to control a low-voltage DC motor.

Rockwell Automation is known for being one of the most popular PLC brands, supported by many compatible devices. Learn…

Rockwell Automation is known for being one of the most popular PLC brands, supported by many compatible devices. Learn the basics of getting started with a CompactLogix project in the Studio 5000 environment.

Machine safety design can be a daunting task with all the different safety devices on the market today. Choosing the…

Machine safety design can be a daunting task with all the different safety devices on the market today. Choosing the correct device for your design can be made easier by understanding when to use the proper device.

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.