To really get the hang of Modbus and the troubleshooting of Modbus networks, you really have to see Modbus live in action for yourself. There’s nothing like doing something to solidify it in your mind. And this is what we are going to do in this lesson.
In setting up or troubleshooting Modbus communications between any Modbus master and it’s Modbus slaves, one of the most important software tools to have is a Modbus client software application. A Modbus client application is most often a Windows application that runs on your PC/laptop and it acts like a Modbus master. It is able to communicate with Modbus slaves on a Modbus network. It is essential when setting up or troubleshooting any Modbus network.
There are many different brands of Modbus clients available on the web. Some of them are for free and some of them require you to purchase them. The Modbus client application that I use the most is called Modscan32 and is made by a company called Win-Tech (www.win-tech.com).
Modscan32 can be downloaded as a trial. This means that you can download it to try it out for yourself.
So now comes the fun part. I have some Youtube videos that I have posted below. I am going to show you how to download and use Modscan32 to do testing and troubleshooting on a Modbus network. I would very much like if you could follow all of the steps in the videos and try everything that I do for yourself.
(When watching the videos, please view at full screen)