Huawei SUN2000-17KTL - Page 37

36
(Optional) Connecting the RS485 Communications Cable to the
SUN2000
4.1
Communications Port Signal Definitions
Before Replacement
-RJ45
Network Port
Before Replacement
-
Terminal Block
SUN2000
-(15KTL-50KTL)-M3 Series
(COM Port)
No
.
Color
Function No. Function
No.
Definition
Function
1
White and
orange
RS485A
1
RS485A IN
1
485A1
-1
RS485 differential
signal +
4
Blue
RS485A
2
RS485A OUT
2
485A1
-2
RS485 differential
signal +
2
Orange
RS485B
3
RS485B IN
3
485B1
-1
RS485 differential
signal
–
5
White and
blue
RS485B
4
RS485B OUT
4
485B1
-2
RS485 differential
signal
–
–
–
–
–
–
5
PE
Shield layer grounding
–
–
–
–
–
6
PE
Shield layer grounding
COM Port
Before Replacement-
Terminal Block
4
Installing Signal Cables
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.
Before Replacement-
Network Port
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.