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So, You Got a Modbus TCP Device… What Next?

So, You Got a Modbus TCP Device… What Next?

Despite being one of the oldest protocols in automation, Modbus is still more complex than digital I/O. When you have a Modbus TCP device, what do you do? How do you actually use it?


Working With Data: Looping Through Arrays In A PLC

Working With Data: Looping Through Arrays In A PLC

Arrays can handle large amounts of data, but when you need to extract a portion of that data, you might need to execute a loop. Learn a few examples and tips for creating loops in PLC logic.


Obtaining System Values in a PLC

Obtaining System Values in a PLC

It’s easy to obtain I/O values for local and remote modules and network nodes. But what about system data that’s built into the PLC? How can we access and use that information?


New to PLCs? Five Critical Features Every Beginner Should Know

New to PLCs? Five Critical Features Every Beginner Should Know

Learn five essential features to consider when selecting a controller, from I/O and software licensing to networks and web access.


Tutorial: Setting up an Inovance HMI With A Mitsubishi PLC

Tutorial: Setting up an Inovance HMI With A Mitsubishi PLC

This guide shows you how to create a simple Inovance HMI project and connect it to a Mitsubishi PLC using serial and Ethernet methods, including practical setup steps and common mistakes to avoid.


The Role of Sensors and Control Systems in Smarter Conveyor Design

The Role of Sensors and Control Systems in Smarter Conveyor Design

Conveyor technology is rapidly advancing thanks to the close integration of mechanical machines and electrical controls, but it’s important to understand how feedback improves that relationship.


Set Up For Success | Scheduling Tasks in PLC Programs

Set Up For Success | Scheduling Tasks in PLC Programs

When setting up a new program in a Rockwell PLC, task scheduling is an important and often overlooked issue where errors appear as inconsistencies, often incorrectly attributed to random faults.


Control.com Readers’ Choice Awards 2025

Control.com Readers’ Choice Awards 2025

Welcome to the end of 2025 and the beginning of 2026! We’re excited to see where the industrial automation world takes us in this new year.


Electrical Cabinet Best Practices: A Field Guide for New Integrators

Electrical Cabinet Best Practices: A Field Guide for New Integrators

A practical, experience-driven guide to designing and wiring electrical cabinets for machine-tending robotic cells.


Synchronized Motion for Servos | Gearing Profile

Synchronized Motion for Servos | Gearing Profile

Synchronized motion has become an industry standard with robots, gantries, and pick and place automation. Follow along this three-part series as we discuss methods of synchronizing servo motors.


Automation Questions: Why Do We Choose Certain Control Voltages?

Automation Questions: Why Do We Choose Certain Control Voltages?

You’ve seen it a thousand times: 24 volts powering a device or representing a trigger signal, but what makes 24 VDC such a versatile voltage, and what about the other voltages in control cabinets?


The Perils of Palletizing Automation and Columbia/Okura’s Solution

The Perils of Palletizing Automation and Columbia/Okura’s Solution

Stacking items on a pallet seems a minor part of the manufacturing process, but it actually requires speed, precision, and flexibility to relieve a heavy burden placed on employees.


Understanding PLC Tags: Controller Scope vs. Program Scope

Understanding PLC Tags: Controller Scope vs. Program Scope

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.


Node-RED and a Low-Code Approach to Automation

Node-RED and a Low-Code Approach to Automation

Looking for a way to create IIoT applications for your factory without hiring expensive developers or spending months on the computer? Take a look at Node-RED’s approach to low-code applications.


Tutorial: Driving a Mecademic Industrial Robot with a Rockwell PLC

Tutorial: Driving a Mecademic Industrial Robot with a Rockwell PLC

Learn how to drive a compact Meca500 industrial 6-axis robot with a CompactLogix PLC over an Ethernet connection, transferring direct TCP set points in joint and world coordinate systems.


A New Way to Robot: A Teach Pendant Feel With Structured Text Language

A New Way to Robot: A Teach Pendant Feel With Structured Text Language

Meet the Meca500 6-axis arm, a robot known for its ultra-high precision and compact footprint. Learn how to use the web server for programming and 6-axis jogging with a structured text interface.


All About The Legendary Stack Light

All About The Legendary Stack Light

The stack light has a simple but powerful purpose: to report the status of the equipment. Follow along as we take a deep dive into the venerable illuminated signal tower.


The Guide to Commissioning a Variable Frequency Drive (VFD)

The Guide to Commissioning a Variable Frequency Drive (VFD)

Learn how to set up a VFD, from initial unboxing to configuring the network parameters necessary to drive some simple motion from a PLC.


Methods of Precision Alignment: Mechanical, Laser, and Vibration Analysis

Methods of Precision Alignment: Mechanical, Laser, and Vibration Analysis

Alignment procedures for pulleys and shafts are a key to preventing costly breakdowns. An effective strategy pairs alignment with vibration analysis to both prevent and predict these downtime events.


Control.com Asks the Experts: Serious Questions About Fluid Valves

Control.com Asks the Experts: Serious Questions About Fluid Valves

After working with solenoid valves for many years, there are still a few questions: is AD or DC voltage better? Do we really need lubrication? I turned to an expert for some answers.