Sungrow SG75CX-P2 - RS485 Communication System

User Manual 5 Electrical Connection
No. Description
PIN 4 ~ 5 N/A
PIN 6 RS485A differential signal+
PIN 7 ~ 8 N/A
table 5-6 RS485_3 terminal description
No. Description
A3 RS485A differential signal+
B3 RS485B differential signal-
NOTICE
RJ45 and terminal block are two types of RS485_1 interface with same functions and
different wiring methods.Choose one of the interfaces for wiring.
5.13.2 RS485 Communication System
Single-inverter Communication System
In case of a single inverter, communication connection requires only one RS485 communica
tion cable.
Multi-inverter Communication System
In case of multiple inverters, all the inverters in the daisy chain can be connected via RS485
cables for communication.
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