Modbus TCP/RTU (C#): Modbus Programming in C#

Definitely informative and helpful, but if you are expecting an in-depth book on how Modbus works, this might not be the book for you. There is barely any code in the book, despite it having C# in the title. It is 39 pages (as advertised), with some very large font. It does include two links to some example code for Modbus TCP and Modbus RTU. The code is a reasonable example on how the protocols work. I would suggest that for a possible future edition, the code be hosted on GitHub so it could be improved and expanded on by readers.I do think it will be helpful and worth the money though as a reference guide and cheat sheet when writing a protocol driver as I am planning to do.