Thank you for the reply Joe, much obliged.
My initial plan was to utilize to the .NET Driver supplied by Unitronics to communicate with the V350. Since I don't have a physical V350 to test my code with, I was hoping an emulator/simulator existed somewhere that I could test my code against to make sure my reads/writes/connects performed as expected.
I know there are .NET Modbus libraries out there that I could also use..in fact I have some existing code that uses the Modbus protocol I could perhaps leverage. So are you saying that so long as my code is able to perform reads and writes to the online modbus simulators you suggested, that I should be golden?
Thanks again for your advice.