Thanks to @Reinhard_Ostermeier we now have added Modbus as a standard TinyCLR package. Many of our customers use Modbus and they had to do the work themselves but now it is a built in feature.
That is excellent, as we use modbus for many things…Thanks…!
Gus, I am still to test the Slave functions as there was an issue with them under NETMF. I will report back later what I find. The Master functions are all good to go.