Latest PLCs Technical Articles

Some workplaces are more dangerous than others, not because of the practices, but rather the products. Where do…

Some workplaces are more dangerous than others, not because of the practices, but rather the products. Where do explosions occur, and what practices exist to reduce such risk for equipment and workforce?

User-defined data types (UDTs) are a powerful and useful tool when applied to their full advantage. However, misused,…

User-defined data types (UDTs) are a powerful and useful tool when applied to their full advantage. However, misused, they can become problematic and introduce roadblocks to troubleshooting and upgrading PLC programs.

Triggering a machine by an external event often requires a pulse timer for OpenPLC Pulse Timer control. Here’s a brief…

Triggering a machine by an external event often requires a pulse timer for OpenPLC Pulse Timer control. Here’s a brief tutorial on how an M5Stack Core can offer a simple, effective low-cost Arduino OpenPLC HMI solution.

What are these terms, PLC, PAC, RTU, DCS, SCADA? Why are they so important to industrial robotics and automation? Explore…

What are these terms, PLC, PAC, RTU, DCS, SCADA? Why are they so important to industrial robotics and automation? Explore how each different piece functions to build a comprehensive automated system.

Many articles address the wiring and implementation of analog control signals, but where are they used, and what might…

Many articles address the wiring and implementation of analog control signals, but where are they used, and what might make them a better (or perhaps worse) decision than digital input/output devices?

Digital signals hold a prominent position due to their compatibility with computers. But what are digital signals, and…

Digital signals hold a prominent position due to their compatibility with computers. But what are digital signals, and what are some examples of the various devices used with digital inputs and outputs?

Structured Text (ST) is one of the common IEC programming languages that can be used in programming PLCs. Learn how to…

Structured Text (ST) is one of the common IEC programming languages that can be used in programming PLCs. Learn how to use structured text to write executable programs for MELSEC’s FX series PLC.

Mathematical operations are essential in PLC programming as they help in creating an argument output that is based on…

Mathematical operations are essential in PLC programming as they help in creating an argument output that is based on proportionality and numbers. Learn how to implement mathematical operations in FX and Q Series PLCs.

Rockwell Automation’s Micro800 series is the modern replacement for some older MicroLogix PLCs. Learn how to get…

Rockwell Automation’s Micro800 series is the modern replacement for some older MicroLogix PLCs. Learn how to get started with basic I/O, plus timers and counters, to build your own programs in a snap!

Stepper motor control can be useful for motion applications. Learn the circuit connection and programming instructions…

Stepper motor control can be useful for motion applications. Learn the circuit connection and programming instructions for implementing stepper motor control using GX Works 2 on MELSEC FX-Series PLCs.

Implementing PID control in a PLC is far more complicated than textbooks would make it appear. There is more to the…

Implementing PID control in a PLC is far more complicated than textbooks would make it appear. There is more to the process than simply picking gain (k) values and calculating an output value.

GX Simulator2 is one of MELSOFT’s essential tools for the simulation of programs in a virtual PLC and works with GX…

GX Simulator2 is one of MELSOFT’s essential tools for the simulation of programs in a virtual PLC and works with GX Works2. Learn how to virtually simulate and test your ladder programs.

Setting and resetting a PLC output is essential in establishing a holding circuit for a transducer. Learn how to use…

Setting and resetting a PLC output is essential in establishing a holding circuit for a transducer. Learn how to use set/reset instructions in MELSOFT series GX Works2 to latch and release an output.

Process automation relies on precise control systems to operate production equipment for everything from lumber to…

Process automation relies on precise control systems to operate production equipment for everything from lumber to pastries. Using control algorithms produces stable, accurate, and often delicious results.

Is it best to ‘controller scope’ or ‘program scope’ your tags? This is the question asked by many new PLC…

Is it best to ‘controller scope’ or ‘program scope’ your tags? This is the question asked by many new PLC programmers, and it often comes down to personal preference.

Industrial and robotics cabling requires specialized termination strategies. This article introduces connectors involved…

Industrial and robotics cabling requires specialized termination strategies. This article introduces connectors involved in automation applications for cable-to-cable or cable-to-device termination.

Any kind of computer programming can be challenging to determine what aspects are truly unique versus what aspects should…

Any kind of computer programming can be challenging to determine what aspects are truly unique versus what aspects should be standardized across projects and platforms to streamline future development.

This article features an in-depth discussion of the various options for buttons and switches, including function, styles,…

This article features an in-depth discussion of the various options for buttons and switches, including function, styles, shapes, and illumination options for all kinds of control panel inputs.

We usually think of joysticks in terms of video game controllers, but they exist in all kinds of industrial systems:…

We usually think of joysticks in terms of video game controllers, but they exist in all kinds of industrial systems: heavy equipment, overhead cranes, and even some robotic controls. But how do they work?