I'd like to monitor, decode, and "interact" with a Modbus RTU device. Nothing complicated, I don't think. When I say interact the "linking" of meters/graphs to some of the registers etc would be really a nice to have and that seems to be inherent to your application.
Is VTscada Light the product I am looking for?
I reviewed the manual and looked at the software after installing it and could not see any serial physical layer instructions.
Can you point me in a direction or should I look else where.