Modbus: The Everyman's Guide to Modbus

This is an excellent tutorial of Modbus - and a great reference too! Before reading the book, I was experienced with using Modbus or thought so. When I had success getting devices to communicate, it was honestly more about luck. I had many more products, some PLCs and thermostats for example that no matter how much time invested, Modbus communication never worked. The book explains the structure of Modbus and small variances that can exist among product types. That solved my issues. Now everything Modbus is quickly implemented and is as simple to deploy as many have claimed. Mr. Rinaldi, how about a book about MQTT?

Good information, but not much more than you’ll find with a 2 minute internet search. This book is over rated.

This is the book I needed. Lays out everything you need.

Since you are reading this review, it means you are looking for a better understanding of Modbus and wish to know if this book would help in that endeavor. How often do you get to have decades of ModBus experience handed to you? Buy the book.One can tell it is hands on experience. I can tell John has spent many a day in the field with his breakout analyzers saying, 'so you say this is the packet you are sending, now here is what you are really sending'. Been there, done that. After you read his , you too would be able to do that. Buy the book.For Industrial Automation personnel, there is a reason ModBus is still around. Nice simple protocol. You will run into it sooner or later, just about anywhere in the world. This bound of paper John wrote will help you immensely. Buy the book.For Building Management Systems personnel, the most prevalent protocol you will encounter. Buy the book.For the Arduino fans out there, here are the protocol answers you are looking for in an easy to understand fashion. Save you a lot of time.Buy the book.

Too the point. But that also why it is 4/5 and not 5/5 stars.

Shipment arrived as expected and in good condition. This book is really covers MODBUS architecture in very clear detail. Good book for control system designers to have on hand.

not a lot there.

I am a longtime Modbus user, It was good to get someone else's perspective and knowledge. It covers a lot about gateways, etc. An easy read.