Sungrow EMS200 - Page 19

User Manual 5. Electrical Connection
13
Item
Remark
Name
Description
D
SD
SD card
interface
Function is reserved
E
Debug
Debugging
serial port
Used for debugging local controller
F
RST
Reset port
Used for hardware reset of local
controller
G
DO1~DO4
Digital output
Relay output ports, where the relay
specification is 250Vac/1A or
30V/1A
DO-DO4: Not assigned
H
PT1, PT2,
AI1~AI4
Analog input
Function is reserved
I
A1B1~A6B6
RS485
communicatio
n port
Supports 6 inputs of RS485, and
can be connected to slave devices
or background
J
CAN
CAN
communicatio
n port
Function is reserved
K
24V
DC24V power
supply port
Current ≤2.0A, and the
switch-mode power supply used for
this port should be insulated
intensely
L
AC
(100~240V)
AC power
supply port
Connected to 100~240Vac
(50/60Hz), and the current ≤0.5A
M
GPS/BDS
GPS antenna
port
Function is reserved
N
RF
Wireless
antenna port
Function is reserved
O
Grounding
hole
Connecting protection ground cable
P
PLC（L1/L2）
PLC
Communicatio
n port
Function is reserved
Digital input/output ports (DIN and DO1~DO4) are configured to
collect node data and control node communication.
The farthest communication distance of COM1 to COM6 (A1B1 –
A6B6) is no more than 1000m.