If you want to match the MPPT controller and RTU, the baud rate used by the two must be the same. The baud rate is divided into 1200 2400 3600 4800 9600. We usually use the baud rate of 9600. If the controller and RTU are used If it is connected, the data of the controller cannot be viewed through the app, then it is necessary to check whether the baud rate is set correctly.
There is an address code under the baud rate. Because of the existence of this address code, one RTU can be connected to multiple controllers. You only need to modify the address code. The address codes cannot be the same.