Sungrow SG110CX-P2, User Manual, Page: 70 / 126

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table 5-3 Port description
No. Silk Screen
Description
1
RS485_3
Used to connect the external meter
2
RS485_1
Used to connect the external COM100E to realize
data interaction with host computer or other moni-
toring devices
Used for multiple inverters in the daisy chain to
communicate
3 RSD STOP Reserved
4 LOCAL STOP
Emergency stop
5 DRM
For external Demand Response Enabling Device
("AU"/ "NZ")
6 ALARM
Used to connect LED indicators or other devices to
indicate whether the inverter is in the faulty state
The inverter can provide export control but will require the use of a external smart meter.
The export control functionality has not been tested to AS/NZS 4777.2:2020.
5.13 RS485 Connection
5.13.1 Interface Description
The RS485 communication wiring board of the inverter is shown below.
The following is the description of terminals.
table 5-4 RS485_1 interface (terminal block) description
No.
Description
A1
RS485A OUT ， RS485A differential
A1
RS485A IN ， RS485A differential
5 Electrical Connection User Manual