Huawei SUN2000 L1 Series - COM Port Pin Definitions

11
No
.
Label
Definition
Description
1
485
B1
RS485B, RS485
differential signal
–
Solar inverters cascading
scenario: used for connecting to
the solar inverters.
2
485
A1
RS485A, RS485
differential signal+
3
485
B2
RS485B, RS485
differential signal
–
Used for connecting to the
RS485 signal ports of the
battery and power meter. When
both battery and power meter
are configured, they need be
crimped
to the 485B2 and
485A2 ports.
4
485
A2
RS485A, RS485
differential signal+
5
GND
GND of the enable
signal/12V/DI1/DI2
Used for connecting to GND of
the enable signal/12V/DI1/DI2.
6
EN+
Enable
signal+/
12V+
Used for connecting to the
enable signal of the battery and
the 12V positive signal.
7
DI
1
Digital
input
signal
1
+
Used for connecting to the DI1
positive signal. It can be used
for connecting to the DRM0
scheduling signal or reserved
for the rapid shutdown signal.
8
DI
2
Digital
input
signal
2
+
Used for connecting to the DI2
positive signal. It can be
reserved for the feedback signal
of the Backup device.
COM Port Pin Definitions
Click
Number of Communications
Cables
Connecting Signal Cables