Huawei SUN2000 Series Quick Manual page 11

COM Port Pin Definitions
Definiti
No. Function
on
RS485
485A1-
1 differential
1
signal +
RS485
3 485B1-1 differential
signal –
Ground point
5 PE on the shield
layer
RS485
7 485A2 differential
signal +
RS485
9 485B2 differential
signal –
11 – –
13 GND GND
Rapid
15 DIN5
shutdown
Description No.
Used to cascade
2
inverters or
connect to the
SmartLogger. It
can also connect
4
to an EMI.
– 6
Connects to the
8
RS485 signal
port on the
power grid
scheduling
10
power meter.
– 12
– 14
Supports AC NS
protection
shutdown, which
can be used as a 16
reserved port for
rapid shutdown
signals.
10
Definitio
Function
n
RS485
485A1-2 differential
signal +
RS485
485B1-2 differential
signal –
Ground
PE point on the
shield layer
DIN1
DIN2
Dry contact
DIN3
for power
DIN4
grid
scheduling
GND
Description
Used to cascade
inverters or
connect to the
SmartLogger. It
can also connect
to an EMI.
–
–