How to Read Data from a Modbus RS485 Temperature Sensor

Learn how to take a Modbus RS485 enabled device from scratch and connect it to a Modbus RS485 network

5.00 (133 reviews)

Udemy

platform

English

language

Other

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

Why take this course?

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.

Screenshots

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Reviews

Pavel

February 7, 2022

It is nice introduction if you need to start reading Modbus sensor quickly and don't have much time. Course is well structured and great for total beginners. It was bit too shallow for my liking. I would like to see more information and examples in both Modscan32 and HMI section with some basic Modbus theory. But I understand that author has different courses for that. Overaly good course. Thank You!

John

July 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.

Eugene

August 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

Jorge

April 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.

Giordano

August 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

Sim

August 3, 2017

It is a very practical course and well explanation too. I am very satisfied with the course. Well done Mr. Emile!!

Александр

April 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

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