Sungrow SG30CX Quick Manual page 6

Inverter connection to Logger1000
Connect the RS485 comms from the inverter(s) via A1/B1 and the energy meter via
A2/B2 to the Logger1000.
On the logger1000 side, A1 and B1 are terminals to connect with the inverter which
display as com1 on the Logger1000 web portal; A2 and B2 are the terminals to
connect with the energy meter, they are shown as com2 on the portal.
On the inverter SG30/50/110CX side, the RS485 cable should be plugged into the
terminal shown in the following figure which highlighted in red circle.
TD_202005_Logger1000_Quick Guide for SG30-50-110CX Inverters_V1.3 Page 6 of 16
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