I have written code using the nimodbus.llb library using Win2000 and LabVIEW 2009. Works fine. I want to install my application on a new laptop with windows 7. Before I purchase the laptop I'd like to know if it will work.
There is no reason why it shouldn't. It is all pure LabVIEW code that uses VISA functions to communicate with the serial port. If your LabVIEW can run on Win7, then so should the modbus llb drivers.