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

  • Explain what is RS232 and what is it used for

  • Explainlan what is RS485 and how it differs from RS232

  • Describe one example where Rs485 is used in Industrial Control Systems

  • Explain what is Modbus?

  • Explain how the Modbus Communication Protocol Works

  • Explain the difference between WiFi and Industrial Wireless

  • Explain how Industrial Wireless Communication Works

  • Explain what is ISA100 Wireless protocol and state the purpose of ISA100 Wireless Compliance Institute (WCI)

  • List and describe the steps to ISA100 product development and certification

  • Explain what is Fieldbus and list 5 protocols in the Fieldbus group

Course curriculum

  1. 1
    • 1. What is RS232 and What is it Used for?

    • 2. What is RS485 and How It's used in Industrial Control Systems?

    • 3. What is Modbus?

    • 4. How does Modbus Communication Protocol Work?

  2. 2
    • 5. WiFi vs Industrial Wireless - What is the difference?

    • 6. How does Industrial Wireless Communication Work?

    • 7. How can we improve Wireless Radio Modulation?

    • 8. What is ISA100 Wireless?

    • 9. ISA100 Wireless Applications | Single, Plant-Wide Wireless Network

    • 10. How to build an ISA100 wireless product?

  3. 3
    • 11. What is Fieldbus?

    • 12. What is Ethernet?

    • 13. What is ControlNet?

    • 14. What is OSI Model?

  4. 4
    • 15. What is Ethernet/IP?

    • 16. What is EtherCAT?

    • 17. What is IO-Link and How does it Work?

    • 18. What is AS-Interface?

    • 19. What is DeviceNet?


The Industrial Networking Fundamentals course is intended to introduce participants to the various communication methods and protocols used in industry.

The course begins with an introduction to the 2 most basic serial communication methods – RS232 and RS485. Modbus, a proprietary language commonly used in industry, is discussed in detail.

Examples of how Modbus communication protocol works between Modbus devices is demonstrated. Participants will be shown the difference between a typical home wireless network using Wi-Fi and an Industrial Wireless network. A detailed discussion continues around how Industrial Wireless Communication works. The International Society of Automation (ISA) Wireless Protocol is described and explained in detail. An entire lesson in the course is dedicated to the ISA100 Wireless Compliance Institute (WCI) and how it supports Industrial Wireless users.

In addition, to complete this course on communication methods, there are detailed discussions on topics such as the OSI Model, Fieldbus, Ethernet, ControlNet, Ethernet/IP, EtherCAT, IO-Link, AS-Interface, and DeviceNet.

Ideal for you if…

  • You are interested in Industrial Communications and different protocols

  • You are responsible for communications between hardware devices in a plant or field environment

Prepare for better pay & bigger responsibility

Marcin Trojak

From my experience, I have to say that RealPars is the most professional online training program out there. The instructors are easy to follow and clearly explain PLC theories with excellent supporting visuals and real-life application examples. I like that they provide a summary after each lesson that brings together all the information and makes it easier to retain. Plus, I can train anytime, anywhere. I’m a maintenance apprentice right now, but when I complete RealPars training I’ll be ready to go after the PLC programming jobs I want.

Mohammad Khabazi

I work on electrical and instrument maintenance now, but my goal is to become a full-time PLC programmer. University courses take too much money and time. The RealPars video training method is great…the instructors are all experts and speak clearly so they keep my interest and are easy to follow. I’m eager to gain even more PLC expertise as new content is added.

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.

Start learning now

You'll get lifetime access to this course.


  • Can I get a certificate for this course?

    "Industrial Networking Fundamentals" is a free course. No certificate will be granted for completing a free course. However, You will receive a personalized certificate of completion once you have fully finished a course (that provides a certificate) while being a Pro member.

  • What is the required software and hardware for this course?

    There won't be any specific hardware or software required for completing this course.

  • 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.