Mastering Modbus RS485 Network Communication

Learn how to design, implement and manage the most popular automation networking system in the world.

4.68 (3139 reviews)

Udemy

platform

English

language

Network & Security

What you will learn

The Origins of the Modbus Protocol and RS485

Understand Memory Address vs. Memory Value

Memory Addressing Conventions

Typical Device Memory Map

Protocol Network Messaging

RS485 Standard and Device Interconnection

Protocol Data Frame Structure

Query - Response Cycle

Function Codes and Master Commands

Modbus Simulation using FREE Simulation Software

Troubleshooting and Exception Codes

Floating Point Data Structure

Modbus Communication with Programmable Logic Controller

Full Course Support Documentation

Why take this course?

The Modbus protocol is the oldest and still by far the most popular automation protocol in the field of process automation and SCADA. Knowing how to create Modbus based networks that run on the RS485 serial communication standard is essential for any electrical technician and engineer working in these fields. Being able to integrate devices from different manufacturers is a skill that is in demand and will ultimately make you more valuable and marketable in the industry.

This course gives you the theory behind the Modbus Protocol as well as RS485. It then goes on to show you how they work together to create a Modbus RS485 network. Two freeware applications are then used to create a Modbus network right on your PC so you can see the communication in action.

After completing this course, you will be able to integrate devices from the same manufacturers and different manufacturers, that are Modbus compliant, to form a complete seamless network.

Screenshots

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Reviews

Yudi

April 13, 2024

Concise and easy to understand course. The delivery is straight to the point without any unnecessary narratives.

Mohammed

April 13, 2024

This course explains stuff in a much simpler way. Really useful for someone who wants to learn and get into Industrial automation field.

Lakshmi

February 16, 2024

This Course is Really Amazing, Course Content really good, Even freshers is able to understand very easily, Thanks to Emile Ackbarali, for this course

Oluwaseyi

January 5, 2024

The course instructor broke everything down. Took it from the most fundamental to advanced. The pace and manner of speaking, length of video clips, and resources made it easy to complete the course.

Winston

December 8, 2023

This is simply awesome. Delivery of the course simple and precise, hence helping to follow up the course seamlessly.

December 5, 2023

A very good introduction to Modbus over RS485. The PDF documentation of all important stuff makes this course outstanding.

Gavin

November 28, 2023

Finally after battling a long time with the subject of Modbus RTU i feel more equipped to tackle the usual issues I face in industry

Tanja

November 17, 2023

Very nice, however it could be more clear that the simulation software is only for windows and not mac.

Manuele

July 20, 2023

I'm a PLC-CN-HMI developer for transfer CNC machines. (up to 15 CNC operating units aggregated in one machine) Here I found the knowledge to set up communications between PLC-CN and secondary devices as Inverters and other PLC. All this knowledge, is very difficult to gather otherwise.

Suresh

June 16, 2023

A very clear-cut explanation with hands-on. Thanks for making such a nice explanation, really helped a lot.

Prasad

June 9, 2023

Good insights into the basics of modus RTU and also the troubleshooting part. However, it could be more relatable if there were real world use cases / problem statements, such as switching a valve off with the coil output or variable output via holding register.

Stanislav

June 9, 2023

A very well-convened form of teaching. I knew almost nothing about Modbus. He explains it quickly and I'm glad I found this course.

Krzysztof

May 25, 2023

Lessons are short and well segmented. Each topic and subtopic is crisp and very clear on what happens. I feel very confident in my understanding of the subject after completing this course.

Jorge

March 30, 2023

Very well presented. Simple and to the point. Clearly the trainer is fully familiarised with the topic.

Ahmed

March 18, 2023

Excellent course from really excellent instructor, but for me I would hope that the course go more deeper in some points. For example, the course didn't cover well the USB Serial converter, although many problems in site came from this converter.

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