I have a VB.NET project. I will make a tool communication between Modbus RTU and PC. It works very well on virtual device but can not connect with real device.
My device is production of China. Because there is not guide document, so I do not know the parameters of device (slave id, register address), and can not set device to slave status.
I need someone who has experience with real RTU devices, you can edit my project. And working via Teamviewer