485 communication line connection method1. Connect the 485 communication cable to the "A, B" terminal of the host module, as shown below:2. Connect the 485 communication shielded line between the combiner boxes in series, as shown in the following figure: Note: The shielded wire inside the combiner
(1) The Main Controller Module has a black screen. When the multimeter measures a DC voltage between PV + and PV-> 400v, the Main Control Module needs to be replaced.(2) The data of the combiner box cannot be viewed in the background, and the settings (baud rate, parity, address) of the monitori
Note: Operate in sequence, do not operate (2) first, then (1), otherwise an arc will occur （1）Disconnect ① circuit breaker; （2）Pull out all positive and negative fuses; （3）Multimeter measurement confirms that the voltage between modules PV + and PV- is 0v; （4）Display all the wiring marks