Sungrow SG250HX-IN-20, Руководство пользователя

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The port RS485_1 is used to connect Logger, so as to implement data exchange with
PC or other monitoring devices. The port RS485_2 is used to connect communication
device of the tracking system, so as to implement data exchange with the tracking
system. Terminal definitions of the two ports are as follows:
Table 5-4 RS485_1 port terminal definition
N No o.. D De effiin niittiio on n
A1
RS485 A IN, RS485A differential
B1
RS485 B IN, RS485B differential signal-
A1
RS485 A OUT, RS485A differential
B1
RS485 B OUT, RS485B differential signal-
Table 5-5 RS485_2 port terminal definition
N No o.. D De effiin niittiio on n
B2
RS485 B OUT, RS485B differential signal-
A2
RS485 A OUT, RS485A differential
B2
RS485 B IN, RS485B differential signal-
A2
RS485 A IN, RS485A differential
The terminal block interface and RJ45 interface have the same function with only wiring
manner different. Select either interface for cable connection.
The RS485_1 interface is marked as SW2.
5.9.2 RS485 Communication System
S Siin ng glle e--iin nvve errtte err c co om mm mu un niic ca attiio on n ssyysstte em m
In case of a single inverter, communication cable connection requires only one RS485
cable.
5 Electrical Connection User Manual