Top organizations train their team with RealPars

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Ford motors uses RealPars platform
General Electric uses RealPars platform
Pfizer uses RealPars platform
Tesla uses RealPars platform

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?


This 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

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.

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.