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Stay up to date with our most recent informative videos and blogs on PLC programming and automation

 

What is a Safety PLC?

What is a Safety PLC?

In this easy-to-follow article, we're going to talk about a very important part of any automated industrial process the Safety PLC.Safety Instrumented System (SIS)A Safety PLC is one of the 3 parts of a Safety Instrumented System (SIS). The SIS can also be referred to...

Interpreting Typical Analog Input Control Loop Diagrams

Interpreting Typical Analog Input Control Loop Diagrams

In this article, we're going to explain how to read analog input control loop diagrams.Industrial control loopsEvery industrial control feedback system has 2 loops: an input control loop and an output control loop.Analog input loopThe analog input loop consists of 2...

How are Remote I/O and Distributed I/O Different?

How are Remote I/O and Distributed I/O Different?

In this article, we’re going to talk about Remote I/O and Distributed I/O. Depending on who you talk to, some say Remote I/O and Distributed I/O are the same thing and the terms are interchangeable … Not so says others. So, who’s correct? Let’s investigate the history...

DP Closed Vessel Level Measurement Explained

DP Closed Vessel Level Measurement Explained

In the first article of this 2-part series, we introduced you to Open Vessel level measurement using a Differential Pressure Transmitter. The second part of our series will take you through the process of predicting differential pressure level transmitter outputs of...

How to Interpret DCS and PLC Symbols on a P&ID

How to Interpret DCS and PLC Symbols on a P&ID

In this article, we’re going to talk about how to correctly interpret PLC and DCS P&ID symbols on a typical instrumentation drawing. Before we get started, you might want to review 2 of our other articles called How to Read a P&ID and What is an HMI?. Alright...

DP Level Measurement Explained

DP Level Measurement Explained

In this first article of a 2-part series, we’re going to introduce you to open vessel DP level measurement using a differential pressure transmitter. The second part of our 2-part series will take you through the process of predicting Differential Pressure Transmitter...

What are 2-wire and 4-wire Transmitter Output Loops?

What are 2-wire and 4-wire Transmitter Output Loops?

In this article, we’re going to take a close look at the 2-wire transmitter and 4-wire transmitter and discuss where they are used and why. We’re also going explore transmitter wiring configurations and how transmitters are connected to a PLC. Before we get started,...

How Can We Improve Wireless Radio Modulation?

How Can We Improve Wireless Radio Modulation?

In this article, we will continue with where we left off discussing wave modulation in Part 1, How does Industrial Wireless Communication work? where we also discussed electromagnetism and how radio waves are transmitted and received. And now that we have a better...

DP Flow Transmitter Testing and Re-Calibration

DP Flow Transmitter Testing and Re-Calibration

In the first article of this 2-part series, we showed you how a Differential Pressure Transmitter is used to measure the flow rate. This second part of our series will take you through the process of calibration and checking the output accuracy of a differential...

How to Measure Flow Rate with a DP Transmitter?

How to Measure Flow Rate with a DP Transmitter?

In this article, we’re going to introduce you to flow rate measurement using a Differential Pressure Transmitter. Before we get started, you might want to review two of our other videos: 1) Differential Pressure Transmitter Explained 2) What is Sensor Calibration and...

How does Industrial Wireless Communication Work?

How does Industrial Wireless Communication Work?

Did you know that wireless communication has been used in industrial applications for over 30 years? Yes, and some of the first applications were with the wireless control of Automated Guided Vehicles and Warehouse Cranes. Wireless technologies have become...

How to Configure Excel WRITE Communication to PLC (VBA)

How to Configure Excel WRITE Communication to PLC (VBA)

As an automation professional, you may require monitoring, controlling or testing using real-time manufacturing or process plant data from an Excel spreadsheet. This data could be helpful also to your management, research and other department personnel requiring...

What is Remote I/O?

What is Remote I/O?

In the industrial control world, we use the term I/O often. So, let’s begin our discussion today with an explanation of I/O. The focus of our discussion will be on Remote I/O, but we’re also going to talk about Local I/O too. In this article, we’re going to: - Explain...

How to Configure Excel READ Communication from PLC (DDE)

How to Configure Excel READ Communication from PLC (DDE)

Do you require monitoring, controlling or testing, using real-time manufacturing or process plant data from an Excel spreadsheet? This data could be helpful to you as an automation professional, or your management, research and other department personnel requiring...

What is a Functional Design Specification (FDS)?

What is a Functional Design Specification (FDS)?

A Functional Design Specification also is known as FDS is a document that describes how a process or a control system will operate. Functional Design Specification does not contain any highly technical detail. Rather, it describes how the proposed system will operate,...

What is an Actuator?

What is an Actuator?

Today we’re going to talk about actuators. There’s probably not a day that goes by where you don’t use or encounter an actuator at home, or at work. In this article, we’re going to: - Explain the purpose of an actuator - Discuss the 2 types of actuators - Look at the...

How to Read a P&ID?

How to Read a P&ID?

In many of our RealPars articles, we discuss control system and instrumentation devices in great detail so you can understand exactly how they work. In this article, we will learn how to read a P&ID on a daily basis. P&IDs, or Piping and Instrumentation...

Differential Pressure Transmitter Explained

Differential Pressure Transmitter Explained

In this article, we are going to discuss differential pressure transmitters. Simply put, a differential pressure transmitter is a device that measures two opposing pressures in a pipe or vessel.To understand how a differential pressure transmitter works, we need to...

What are SQL Programming Basics? (PART 2 of 8)

What are SQL Programming Basics? (PART 2 of 8)

If you would like to follow along with us, please review the RealPars SQL lesson, How to install MySQL and import a sample database, on how to download and setup MySQL database on your computer. The world of data is constantly changing and evolving every second. This...

What is AS-Interface?

What is AS-Interface?

The AS-Interface is usually shortened to AS-i, and its full title is Actuator-Sensor Interface. It is a simple networking system for devices found out in the field.AS-Interface is an intelligent cabling system that is designed to replace the discrete wires linking...

How to Follow an Electrical Panel Wiring Diagram

How to Follow an Electrical Panel Wiring Diagram

This article is unlike any of the articles we’ve done before. We’re going to delve into the world of panel drawings! This is an exceptionally useful weapon to have in your armory, as it not only helps you to build panels and understand the inner workings of them, but...

What is the Purpose of the Main Switch?

What is the Purpose of the Main Switch?

We’ve already covered some of the important aspects of a control panel, but some might say that what we’re going to cover today is the most important of all. The Main Switch is the one part of a control panel which has a large impact on progressing a project.When we...

What Does an Orange Wire Do in A Control Panel?

What Does an Orange Wire Do in A Control Panel?

In a previous article, we covered the basics of an Electrical Control Panel. Now we’re going to take a closer look at some of the other important components that go towards making up the panel. Now, this article is a little different, as we’re going to look at...

What is IO-Link and How does it Work?

What is IO-Link and How does it Work?

In this article, we’re going to learn about IO-Link. It is a communications protocol that works point-to-point.IO-Link BasicsIO-Link is a point-to-point communication protocol. A point-to-point connection is a communications connection between two separate endpoints...

PLCnext – Connecting Industrial Automation to the IT World

PLCnext – Connecting Industrial Automation to the IT World

In this article, we’re going to get an insight into some new PLC technology courtesy of Phoenix Contact. Martin Boers had provided his expertise on this emerging product; the PLCnext.What is PLCnext?As you would expect, this PLC is capable of what you might typically...

How to Read a Spool Valve Schematic Drawing

How to Read a Spool Valve Schematic Drawing

In a previous RealPars article, we learned about what a spool valve is and how it works mechanically. In this article, we will continue this theme and learn about how a spool valve is represented in engineering and manufacturers drawings, how to understand what the...

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