Huawei LUNA2000-15-S0 Quick Manual page 20

COM Port Pin Definitions
SUN2000-(3KTL-10KTL)-M1
COM Port Pin Definitions
Battery terminals (BAT+/BAT–)
No. Label
485B2 RS485B, RS485
3
485A2 RS485A, RS485
4
5 GND
EN+
6
Battery terminals (BAT+/BAT–)
No. Label
5 PE
7 485A2
9 485B2
EN
11
13 GND
19
Definition Description
Used for connecting to
differential signal–
the RS485 signal ports of
the battery.
differential signal+
GND Used for connecting to
GND of the enable signal.
Enable signal+
Used for connecting to
the enable signal of the
battery.
Definition
Ground point on
the shield layer
RS485A, RS485
differential signal+
RS485B, RS485
differential signal–
Enable signal+
GND
COM port (COM)
COM port (COM)
Description
Ground point on the
shield layer
Used for connecting
to the RS485 signal
ports of the battery.
Used for connecting
to the enable signal of
the battery.
Used for connecting
to GND of the enable
signal.