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Explaining User-Defined Data Types for PLC Programming

Explaining User-Defined Data Types for PLC Programming

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.


Creating a Low-Cost OpenPLC Pulse Timer Function Block HMI with an M5Stack Core

Creating a Low-Cost OpenPLC Pulse Timer Function Block HMI with an M5Stack Core

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.


Beginner’s Guide to Programmable Encoders

Beginner’s Guide to Programmable Encoders

Programmable encoders provide engineers real flexibility to adjust process parameters. From operating theory to programming methods, here’s everything you need to know to begin leveraging these handy devices.


What You Need to Know: Soft Starters for Industrial Motors

What You Need to Know: Soft Starters for Industrial Motors

Driving motors is one of the most fundamental automation tasks, but understanding and selecting the proper motor soft starter for your application may require more investigation than you thought.


Understanding the Automation Lingo: PLC, PAC, RTU, DCS, and SCADA

Understanding the Automation Lingo: PLC, PAC, RTU, DCS, and SCADA

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.


Potential Problems Arising from Misuse of Motor Phase Wiring

Potential Problems Arising from Misuse of Motor Phase Wiring

Using the right motor for the right task is critical - but what happens if the motor is connected to the wrong supply? It is never recommended, but important to quickly understand symptoms of incorrect wiring.


Fundamentals of Directional Control Valves in Fluid Control Systems

Fundamentals of Directional Control Valves in Fluid Control Systems

Directional control valves (DCVs) come in many shapes and sizes for pneumatic and hydraulic applications. Learn to distinguish the different configurations and the meaning of external markings.


Troubleshooting and Testing Single Phase AC Motors

Troubleshooting and Testing Single Phase AC Motors

Single-phase motors are common in household and small industrial devices. They are a bit more complex than 3-phase models, so it’s important to recognize failure modes and common symptoms.


Industrial Wireless Technology: Communication and Programming

Industrial Wireless Technology: Communication and Programming

Wireless technology is typically slower to adoption for industrial automation, but what wireless advancements are shaping the current and future landscape of the automated factory floor?


Panel Builder’s Guide to Grounding and UL 508A Standards - Part 1

Panel Builder’s Guide to Grounding and UL 508A Standards - Part 1

Ground wires reduce the risk of injury and damage from faulty equipment. Shops designing according to the UL 508A standard must understand how, when, and why to properly ground and bond circuits.


PID for Your PLC Using SP and PV. So Many Acronyms, So Little Time

PID for Your PLC Using SP and PV. So Many Acronyms, So Little Time

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.


Controlling and Troubleshooting Common DC Motors

Controlling and Troubleshooting Common DC Motors

Direct current (DC) motors have existed since the late 19th century. What sets these motors apart from AC models, how do you control them, and how can you tell when it’s time to repair or replace them?


Industrial and Robotic Connectors: Choosing Suitable Contacts for Cable Connections

Industrial and Robotic Connectors: Choosing Suitable Contacts for Cable Connections

Selecting a suitable electrical connector is a process that is based on how you will terminate it to the system. This article provides advice on how to make the right contact selection for your industrial or robotic system.


Methods and Algorithms in Error Checking for Serial Communications

Methods and Algorithms in Error Checking for Serial Communications

Errors in communications often manifest as a result of electrical noise interrupting the data during the transmission process, leading to various methods for determining whether received data has been damaged.


5-Point Guide To Set Up A Lean Production System

5-Point Guide To Set Up A Lean Production System

The Lean process uses a method of implementation focusing only on actions providing value to customers. The following five steps break down the process into discrete modules when introducing efficiency to production.


How To: Using Set/Reset Instructions in Mitsubishi’s MELSEC PLCs

How To: Using Set/Reset Instructions in Mitsubishi’s MELSEC PLCs

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.


Fundamentals of Hydraulic Pumps: Types and Operating Principles

Fundamentals of Hydraulic Pumps: Types and Operating Principles

Hydraulic pumps take energy from a source, usually an electric motor or combustion engine, and turn it into a usable force to complete work. What kind of hydraulic pumps exist, and how do they work?


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.


Connectors Used in Industrial and Robotic Cable Termination

Connectors Used in Industrial and Robotic Cable Termination

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.


Developing Standardized Practices for PLC Programming

Developing Standardized Practices for PLC Programming

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.