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After taking this course, you’ll be able to:

  • Describe the client-server structure of OPC UA

  • Identify the differences between OPC UA and OPC Classic

  • Give a definition of Node ID, Data Type, Subscription ID and Session ID

  • Describe the distinct elements of every OPC data transaction: Display Name, Value, Time Stamp, and Quality

  • List the hardware and software prerequisites necessary to implement OPC UA

  • Give examples of common situations where OPC UA is used to provide data across a control system network

  • Describe the way that OPC UA uses subscriptions to direct OPC UA servers to publish data to an OPC UA Client.

Course curriculum

    1. 1. What is OPC UA?

    2. 2. What is Required to Use OPC UA?

    3. 3. How is OPC UA Configured?

    4. 4. An Example of Using OPC UA

About this course

  • 4 lessons
  • 0.5 hours of video content
  • Pro Course
  • Earn Certificate of Completionfa-b-b

Ideal for you if…

  • You are an engineer involved in networking multiple PCs, PLCs, and other ethernet- connected devices together over a common network

  • You are interested in how ethernet-connected devices can share data with one another in a secure and reliable way


In this course, you will learn how OPC Unified Architecture, or OPC UA, can be used to exchange data between process control system devices and applications. OPC UA, like OPC Classic, is a client-server based application. However, unlike OPC Classic, which has many forms, such as OPC Data Access (OPC DA) and OPC Historical Data Access (OPC HDA), OPC UA has only one structure which allows the configuration of many data types.

OPC UA data requests are set up through the use of a UA Client/Server Connection Link. This link takes advantage of Secure Socket Layer (SSL) and Secure HTTP (HTTPS) to establish a secure end-to-end connection between the OPC UA Client and OPC UA Server.

The method for configuring the client and server applications is presented through the use of examples, using an OPC UA simulation server. The concepts of Tagname, Value, Time Stamp, and Quality for each piece of data shared are developed along with Node ID, Data Type, Subscription ID, and Session ID.

The OPC UA server simulator and various client applications are used to demonstrate the configuration and execution of data exchange between PC stations and devices, such as PLCs.

Prepare for better pay & bigger responsibility

Jake Watkins

Since I started training a few months ago, I can see there’s been a huge difference in how much more efficiently and effectively I can handle PLC repairs in the field. Our clients are telling management how happy they are to get back online more quickly and save money because I’m turning around faster fixes. I definitely recommend it for anyone who needs PLC training at any level.

Mario Flores

I needed to get up to speed on working with Siemens PLC equipment and came across RealPars training on YouTube. I watched my first video and immediately went to the website and signed up as a student. I like the way information is explained step-by-step and that it’s broken down into small chunks…I can go back and review anytime I want. I’m already seeing that I can perform repairs faster and with more confidence. Three of my co-workers were so impressed, they signed up for RealPars, too.

Meet your instructor

Scott Sommer, PE, CAP

Scott Sommer has worked in the automation industry for over 37 years. In addition to his full-time job as Director, Automation Engineering Professional Development at Horizon Controls Group, Scott is proud to help develop the next generation of automation engineers. In his free time, he’s a RealPars instructor and an ISA trainer.

Here’s why you’ll succeed

  • One-on-one support

    Stuck or have a question? You get unlimited support from our team of proven PLC programming experts.

  • Laser-focused lessons

    We only teach you exactly what you need to know to master a PLC course. No fluff, filler, or wasting your time.

  • Experienced instructors

    All PLC training courses include step-by-step instructions from the world’s best so you can join their ranks and gain an unfair advantage.

The RealPars guarantee

  • Suited for all skill levels

    we’ll help you get the skills you need to stand out and get hired!

  • Learn practical skills

    You can immediately apply learnings and improve your results.

Start learning now

You'll get access to this course and ultimate access to the rest of the courses in the library.


  • Can I get a certificate for this course?

    Yes. RealPars will issue a Certificate of Completion (certified by RealPars) when you complete the course.

  • What is the required software?

    - OPC UA Server Simulator (from Integration Objects)
    - dataFEED OPC UA Client (from Optimizel softing)
    - Prosys OPC UA Simulation Server

  • Can my employer purchase a course for me?

    Yes. Most people enroll individually, and then submit their receipt to their employer for reimbursement. However, if your employer has a tuition budget and wants to train 5 people or more, you can send us an email at [email protected] and we will help you with bulk signup.

  • Can I register for a course if I am working full time?

    Of course. All of our course content is pre-recorded, so you can work and study on your own time.

  • Do I have to travel to take this course?

    Nope! All our courses are offered online, so you can take them from anywhere in the world. All you need is a high-speed internet connection and the applicable software for your course.