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

 

How does Modbus Communication Protocol Work?

In the previous video, you learned about what Modbus communication protocol is and the types of Modbus communication used in the industry. Now, as promised, in this video you are going to learn about How Modbus communication protocol works between devices. 1. Modbus...

What is a PID Controller?

Today you will learn about PIDs. Specifically, what they are and when do we use them with automation and PLCs. So what is a PID controller? PID is an acronym that stands for Proportional, Integral, Derivative. If you need to keep something constant, like a temperature...

What is Modbus?

In the real world of the device to device process automation communication, a dialogue or conversation between devices occurs systematically, in many cases, over different types of communication networks and in different languages. Modbus as an "Open Protocol"...

What are the Most Popular PLC Programming Languages?

There are 5 languages that are all a part of the IEC (International Electrotechnical Commission) Section 61131-3 Standard. This IEC Standard allows some ground rules that standardize PLC’s and their languages. Let’s take a deeper look into all these PLC Programming...

What is the Difference between Profibus and Profinet?

Profibus and Profinet are industrial communications protocols used extensively by Siemens control systems. While they may sound similar, don't let the names fool you! Profibus and Profinet are very different protocols that use different cables and connectors. Let's...

How to Determine the Motor Size for Your Project?

In this lesson, we will continue the discussion on the topic of motion control. All of us at RealPars, hope you have been following our previous lessons on motion control and have begun to benefit from these lessons. Now you will apply your base knowledge of Servo and...

What is a VFD?

Today you will learn about VFD.  Specifically, what it is and when do we use it with automation and PLCs. So what exactly is a VFD? Well, it stands for Variable Frequency Drive. They are used for running an AC motor at variable speeds or let them ramp up their speed...

What are the Major PLC Manufacturers?

Today we will discuss several of the top PLC manufacturers from around the world. There are quite a few, and hopefully this video will clear up some of the differences of the major brands. As technicians, engineers, and programmers, we have several choices when it...

PLC Analog Inputs and Signals

      Welcome to another to another blog post on industrial automation and PLCs. In this lesson, we are going to be talking about PLC Analog Inputs.   What do we mean by PLC analog inputs? Analog values are continuous values, such as temperatures and pressures. While...

What is a Linear Motion Control?

I hope you have been following our lessons on Motion Control related topics. Recently RealPars have published blog post lessons on what are Servo and Stepper Motors and how they work. I hope you have a had an opportunity to read. Now that we have learned about Motion...

What is RS232 and What is it Used for?

Today you will learn about RS232. It is a phrase you may hear fairly regularly in industry, especially by the older guys. Hopefully this video will clear some things up for you.   What exactly is RS232? First and foremost, it is a form of serial data transmission. Or...

Stepper Motors Advantages and Disadvantages

This lesson is a continuation of a series of lessons involved with learning about Stepper Motors and Servo Motors. If you haven’t already, please review our previously released lesson on, what is a Stepper Motor and How it works? In this lesson, we will discuss the...

What is RTU?

RTU stands for Remote Terminal Unit, sometimes also called Remote Telemetry Unit or Remote Telecontrol Unit. A RTU is a microprocessor based device that monitors and controls field devices, that then connects to plant control or SCADA (supervisory control and data...

What is a Servo Motor and How it Works?

Have you ever thought about how a robotic vehicle commonly used in military application with bomb detention is controlled or how metal cutting and forming machines provide precise motion for milling, lathes and bending for metal fabrication or how an antenna...

What is Ladder Logic?

If you are involved in any way with industrial machinery, you almost have to have heard of ladder logic. Since there are almost never ladders involved, it probably doesn’t make a lot of sense that we call it that, but the reasons for the name are buried in the history...

What Is a Safety Instrumented System?

      In this video and blog post, you will learn what a Safety Instrumented System is, how it is constructed, and how it plays an important role in keeping our chemical, refining, and other manufacturing plants running safely and as productive community partners and...

PLC Basics | Programmable Logic Controller

      Today we are going to talk about PLC basics. The programmable logic controller, or PLC, is a special purpose computer. It has no display, no keyboard, no printer, no hard drive, and hides in the control panel out on the factory floor, but it is still a computer....

What is the difference between SCADA and HMI?

Today, you will learn the difference between SCADA and HMI. We will talk about the differences as well as the similarities, and also when each is used. There is usually some confusion because of the similarities. So let’s dive in to SCADA for now. SCADA stands for...

What is the Difference Between PLC and DCS?

In a nutshell, a PLC or programmable logic controller is a ruggedized computer used for automating processes. A DCS or distributed control system is similar to a PLC in that it has rugged computer controllers however the DCS contains multiple autonomous controllers...

What Are the Advantages PLCs Have over Relay Systems

There are many advantages that a PLC system holds over a relay system. Today, we will dive into some of those advantages. One of the first and simplest advantages is reliability.   1. Reliability The internal relay systems of a PLC are solid state. This means that the...

What is a Stepper Motor and How it Works?

In this lesson we will discuss what a stepper motor is and how it works, so let’s first determine what a stepper motor is and examine some unique features of a stepper motor. Have you ever thought about how a robotic arm moves with precision or how graphic printers...

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