How to Read Data from a Modbus RS485 Temperature Sensor (Udemy.com)
Learn how to take a Modbus RS485 enabled device from scratch and connect it to a Modbus RS485 network
Created by: Emile Ackbarali
Last updated May 2026
What you will learn
- Analyze Modbus device documentation
- Analyze RS485 serial communications documentation
- Make RS485 serial communications connections
- Use software tools to test/verify Modbus register addresses and values
- Understand the address offset issue experienced with some Modbus masters
- Create a Human Machine Interface to display Modbus data in a user-friendly format
How it compares
Against the other 1,182 rated Udemy courses in IT & Software on CourseDuck:
- Rating4.6 out of 5higher than 67% of them
- Reviews147#903 of 1,183 by number of reviews
- Length0.8 hoursshorter than 98% of them
- Last updatedMay 2026more recently than 75% of them
Course Description
This course as created as a result of requests of students who wanted to have a single example of a Modbus-enabled RS485 device being taken "out of the box" and the steps taken to connect the device onto a Modbus RS485 network where it's data values could be read and displayed.
The course uses a Temperature / Humidity sensor that has Modbus RS485 capability, as the device to be connected to the Modbus network. The documentation associated with the device is analyzed and is then used to configure Modbus master test software, where register addresses are confirmed.
The device is connected to a PC via a USB-to-RS485 converter.
After verification of data register addresses, a Human Machine Interface (HMI) application is created using an application called Winlog Lite. The HMI application is then used to read the data values from the Modbus device and display those values in a user-friendly format.
The course is extremely practical and steps he student through the complete process in a very systematic and logical manner. As the software tools are all free trials, the student will be able to download the applications and practice further.
Instructor Details
- 4.6 Rating
147 Reviews
Emile Ackbarali
I have been working in the fields of Software Development, Software Systems Integration and Process Automation since 1996. In 2003, I stepped out on my own and started working for myself providing software development and systems integration services to small and medium businesses.
Teaching has always been a passion for me. I have taught at the tertiary level for many years on the subjects of programming, control systems as well as systems integration. In the last few years I found myself incorporating more and more videos into the curriculum with amazing results.
When I heard of uDemy I just could not help but sign up. With teaching in a classroom, you can reach only so many students, but with uDemy you can reach the world! I plan to publish and promote as many courses as I possibly can on the uDemy platform.
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Reviews
By Akanni Kabeer on 6/9/2023
This is a detailed course on practical ways to learn to read from Rs485 devices.
By John D. Catuara on 7/5/2020
Positive Points: ========== 1) Excellent presentation clear audio and matching slides. 2) Very well presented course on using Modbus RS485 to read from a temp sensor. 3) Very well spoken, with clearly spoken English, which is refreshing because his dialog is easy to follow and understand. 4) Each section includes a word document addendum to the videos, providing additional notes as for that particular video/section. Because of this extra effort by the instructor, as well as the clear articulation, I gave a rating of 5.0. Negative Points: ========== 1) This is not really a negative, but is a comment or all Udemy instructors. It would be nice to give brief notes document, summarizing each section/video, that students can refer back to. This basically remove the burden of the student having to write notes. I realize that when the student writes notes, that is also part of the learning process. But having a Notes/Summary for each section document would be fantastic.
By Ignacio Castrejon Mendoza on 10/31/2019
Simple y claro, fácil de entender, siempre y cuando estés familiarizado con Modbus
By Eugene Barry on 8/8/2019
I feel the course delivered the information required to complete an understading of MODBUS connected instruments, the course is good value for money. The inclusion and use of other software was a very useful lesson. Unfortunately living in the UK has made it difficult to obtain the Temperature / Humidity sensor used in the course it carries a horrendous cost towards the course as was in excess of over 200 dollars so the course cost ramped due to this. It is always good to follow a course through to its conclusion so I think perhaps using readily available low cost instruments for demonstration purposes would be better option. Otherwise Brilliant. Eugene Barry
By Jorge Reyes on 4/29/2019
Great for collecting information and learning basics but, The course is on how to read a Modbus temp sensor and half way through the module I still have not seen any data collection or setting up of the sensor nor setting up the Modbus.
By Giordano Bellomi on 8/11/2018
I'm a beginner, I was able to interface my MODBUS device without any problem. The interface software is easy and I succeed to develop my first interface
By Kevin Saddington on 3/17/2018
I had a specific requirement to learn and this filled that knowledge gap Many thanks
By Sim Hock Soon on 8/3/2017
It is a very practical course and well explanation too. I am very satisfied with the course. Well done Mr. Emile!!
By Александр Богинский on 4/10/2017
Это именно то, что мне нужно. Огромное Спасибо учителю, все очень информативно и по-шагово! Надеюсь Вы будете создавать новые лекции с более сложными устройствами. Так держать Mr. Ackbarali
By Jerry Overton on 11/1/2016
Very good course info, it made it easy to understand how to setup out of the box.
Quality Score
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Overall Score : 92 / 100












