How to connect 485 communication line

1. 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 box cannot be grounded!

3. After suspending the shielded lines of all the combiner boxes in a series, ground the single point at the communication management machine, as shown in the following figure: