Huawei SmartLogger2000-10-B-JP Quick Manual page 12

RJ45 Network Port (SUN2000-24.5KTL/28KTL)
RS485 Signal SPD
RS485
Surge
Protectio
n Port
RS485
surge
protectio
n port 1
RS485
surge
protectio
n port 2
NOTE
1. Protection ports connect to the COM ports on the SmartLogger. Port 4 is not
connected.
2. Surge ports connect to RS485 ports on other devices. Port 3 is the ground port.
3. Protection ports and Surge ports must not be reversely connected.
4. One RS485 signal SPD can protect two COM ports.
5. Protection ports 2 and 6 and surge ports 1 and 5 form an RS485 signal SPD
port for protecting one COM port. Protection ports 8 and 12 and surge ports 7
and 11 form another RS485 signal SPD port for protecting one more COM port.
No. Color
1 White orange
2 Orange
3 White green
4 Blue
5 White blue
6 Green
7 White brown
8 Brown
Prote Port
ction Definit Function
Port ion
RS485 RS485A, RS485
2
A IN differential signal+
RS485 RS485B, RS485
6
B IN differential signal–
RS485 RS485A, RS485
8
A IN differential signal+
RS485 RS485B, RS485
12
B IN differential signal–
Function
RS485A, RS485 differential signal+
RS485B, RS485 differential signal–
N/A
RS485A, RS485 differential signal+
RS485B, RS485 differential signal–
N/A
N/A
N/A
Surge Port
Port Definition
RS485A
1
OUT
RS485B
5
OUT
RS485A
7
OUT
RS485B
11
OUT
11
Function
RS485A, RS485
differential signal+
RS485B, RS485
differential signal–
RS485A, RS485
differential signal+
RS485B, RS485
differential signal–