Huawei SUN2000-15KTL-50KTL Series Quick Manual page 37

4
Installing Signal Cables
(Optional) Connecting the RS485 Communications Cable to the
4.1
SUN2000
If the signal cables are long enough to connect to the communications port on the SUN2000,
you do not need to install an AC adapter box.
Communications Port Signal Definitions
Before Replacement-RJ45
Network Port
No
Color Function
.
1 White and RS485A
orange
4 Blue RS485A
2 Orange RS485B
5 White and RS485B
blue
– –
–
– –
–
Before Replacement-
Network Port
Before Replacement-
Terminal Block
Before Replacement-
Terminal Block
No. Function
1 RS485A IN
2 RS485A OUT
3 RS485B IN
4 RS485B OUT
– –
– –
36
SUN2000-(15KTL-50KTL)-M3 Series
(COM Port)
No. Definition Function
1 485A1-1
2 485A1-2
3 485B1-1
4 485B1-2
5 PE
6 PE
The following figure shows the side without
the tab. The colors and functions of the wires
in the figure are for reference only. The
actual colors and functions may vary.
COM Port
RS485 differential
signal +
RS485 differential
signal +
RS485 differential
signal –
RS485 differential
signal –
Shield layer grounding
Shield layer grounding