Latest PLCs & PACs Technical Articles

Sequential Function Chart (SFC) is a graphical programming language among the languages identified by IEC 61131-3…

Sequential Function Chart (SFC) is a graphical programming language among the languages identified by IEC 61131-3 programming languages and standard for PLC programming using ladder logic.

The ability to utilize an array effectively is a fundamental skill in becoming a PLC programmer, but it can also be very…

The ability to utilize an array effectively is a fundamental skill in becoming a PLC programmer, but it can also be very complex and difficult to master. Let’s do a run-down of arrays and some of their complexities!

Build a low-cost PLC using the Arduino Uno and the open-source industrial controls software, OpenPLC, to learn how to…

Build a low-cost PLC using the Arduino Uno and the open-source industrial controls software, OpenPLC, to learn how to program with ladder logic, beginning with your first OpenPLC project: Hello World.

Learn how to take advantage of the powerful AOI feature that comes standard in Allen-Bradley / Rockwell PLCs using…

Learn how to take advantage of the powerful AOI feature that comes standard in Allen-Bradley / Rockwell PLCs using RSLogix 5000 and Studio 5000 Software.

There are many considerations when selecting a thermocouple type. In this article, we look at the advantages, and…

There are many considerations when selecting a thermocouple type. In this article, we look at the advantages, and limitations, of the eight standard thermocouples and various installation considerations.

B&R is a control system manufacturer less heard of than some of its bigger competitors, Rockwell and Siemens, however…

B&R is a control system manufacturer less heard of than some of its bigger competitors, Rockwell and Siemens, however their PLCs, lineup of motors, and product offerings with Automation Studio make B&R a leader in industrial innovation.

Ladder logic and structured text language are fairly common yet visually different. How do you choose the best PLC…

Ladder logic and structured text language are fairly common yet visually different. How do you choose the best PLC language for your automation application?

When selecting the right module for the right load, be sure to understand how the load resistance will affect the voltage…

When selecting the right module for the right load, be sure to understand how the load resistance will affect the voltage and current of the output module terminals.

As summer heat continues to scorch the northern hemisphere, manufacturers face potential equipment damage and downtime.…

As summer heat continues to scorch the northern hemisphere, manufacturers face potential equipment damage and downtime. Learn about the ways extreme heat can damage automated equipment and systems. 

​​​​​​​Arduinos have been a staple in the community of makers, students, and project innovators for many…

​​​​​​​Arduinos have been a staple in the community of makers, students, and project innovators for many years. For many using Arduino’s IDE, there can be difficulties in translating between PLC ladder rungs and text programming.

Moving data is a critical function of PLCs. In this article, we’ll talk about Move, Masked Move, Copy File, and…

Moving data is a critical function of PLCs. In this article, we’ll talk about Move, Masked Move, Copy File, and Synchronous Copy File and show how they can be used to move individual pieces of data and entire arrays. 

Learn about the differences between red, green, infrared, and more recently, blue photoelectric sensors and how the…

Learn about the differences between red, green, infrared, and more recently, blue photoelectric sensors and how the different light spectrums can aid in varying industrial automation processes.

Learn about the common applications, programming procedures, and safety protocols of collaborative robot work cells,…

Learn about the common applications, programming procedures, and safety protocols of collaborative robot work cells, which are often simpler and less expensive than industrial robot work cells.  

Inside a controller, code is interpreted into the binary signals that influence input and output signals, flags and…

Inside a controller, code is interpreted into the binary signals that influence input and output signals, flags and registers, and even the communication of network signals. This is the job of firmware.

Centralized control systems are often seen as outdated compared to decentralized systems; however, both have their…

Centralized control systems are often seen as outdated compared to decentralized systems; however, both have their advantages and disadvantages when it comes to choosing which one to use in manufacturing. 

​​​​​​​We will show you how to recognize, utilize, and efficiently operate your comparison instructions in…

​​​​​​​We will show you how to recognize, utilize, and efficiently operate your comparison instructions in Rockwell Automation’s Studio 5000 and Automation Direct’s Productivity Suite to make your program flow smoothly.

One common challenge when working with legacy control systems is establishing communication with old devices that use old…

One common challenge when working with legacy control systems is establishing communication with old devices that use old protocols like RS232 and RS485. Learn about the importance of converting from serial to Ethernet.

There are many distributed fieldbus capabilities for valve manifolds that can save on network overhead and wiring. In…

There are many distributed fieldbus capabilities for valve manifolds that can save on network overhead and wiring. In this article, we will look at PLC programming of fieldbus manifolds highlighting Festo's CPX layout.

We will show you how to use the basic trigonometry functions to build ladder logic in a PLC, allowing for a clean,…

We will show you how to use the basic trigonometry functions to build ladder logic in a PLC, allowing for a clean, well-organized, and easy-to-use code that allows you and other users to troubleshoot your programs.