Latest Technical Articles

Closed-loop motor control is a control system used to regulate the output of a motor. Learn about the four common types…

Closed-loop motor control is a control system used to regulate the output of a motor. Learn about the four common types of closed-loop motor control systems to understand each one’s inner-workings and applications.

Data stored in a historian server is useful for analysis and troubleshooting. Learn about data archiving techniques for…

Data stored in a historian server is useful for analysis and troubleshooting. Learn about data archiving techniques for control systems, as well as what type of data is stored and the tools to make it happen.

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.

Linear and switch-mode power supplies provide direct current to power control components and electrical devices. Learn…

Linear and switch-mode power supplies provide direct current to power control components and electrical devices. Learn about the differences between the two power supplies and which one is best for your control system.

Programming robots may seem like a simple task of moving from point to point, like a really expensive game of Connect the…

Programming robots may seem like a simple task of moving from point to point, like a really expensive game of Connect the Dots. Linear, joint, and circular motion commands affect robot movement differently, each meant to be used in certain settings.

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?

PLCs and microprocessors have largely replaced timing functions in control circuits. But these timer relays still hold…

PLCs and microprocessors have largely replaced timing functions in control circuits. But these timer relays still hold many necessary tasks. What’s inside these devices might be more complex than you imagined!

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.

We know that servo motors are found inside machines that rely on precise motion with feedback to verify proper operation,…

We know that servo motors are found inside machines that rely on precise motion with feedback to verify proper operation, but how do they work, and what makes them different from any other kind of motor?

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.

Coil, field winding, rotor, stator, eddy current… When it comes to motors, there are numerous terms that describe the…

Coil, field winding, rotor, stator, eddy current… When it comes to motors, there are numerous terms that describe the theory of operation, but what is inside a 3-phase motor? Take a look, and learn how they work.

When accurate positioning and speed control is needed, most engineers turn to servo motors or stepper motors, but what is…

When accurate positioning and speed control is needed, most engineers turn to servo motors or stepper motors, but what is the difference between the two, and which is the right choice?

Frequency filters remove unwanted variations from signals and power sources. In this article, we explore why we need…

Frequency filters remove unwanted variations from signals and power sources. In this article, we explore why we need frequency filters in industrial automation and where they are commonly found.

Human-machine interfaces, or HMIs, provide visual process data and allow access to process parameters and diagnostics…

Human-machine interfaces, or HMIs, provide visual process data and allow access to process parameters and diagnostics information. What’s inside these touchscreen displays, and how do they actually work?

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.

Air power drives a lot of modern equipment. Robot grippers, ejectors, actuators, and rotary tables are just a few of the…

Air power drives a lot of modern equipment. Robot grippers, ejectors, actuators, and rotary tables are just a few of the devices controlled by air. What’s inside those banks of solenoid valves, and how do they work?

Industrial communication channels often contain terms such as ‘Modbus over RS485’ or ‘CIP Safety over Ethernet’.…

Industrial communication channels often contain terms such as ‘Modbus over RS485’ or ‘CIP Safety over Ethernet’. What does it mean to send one network over another, and how does it work to your advantage?

Total laboratory automation (TLA) helps in workforce utilization, reduced costs, and management of routine testing. Learn…

Total laboratory automation (TLA) helps in workforce utilization, reduced costs, and management of routine testing. Learn about what TLA is, its components, and what to consider before replacing a traditional laboratory.

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.