Huawei SUN2000-215KTL-H0 - Page 20

19
Connecting Communications Cables (4–8 mm Four-Hole Rubber Plug)
When using the four-hole rubber plug, block the unused cable hole with a plug, and then
tighten the locking cap.
Port
Pin
Definition
Pin
Definition
Description
RS485
-1
1
RS485A IN,
RS485
differential signal+
2
RS485A OUT,
RS485
differential signal+
Used for cascading
inverters or connecting to
devices such as the
SmartLogger.
3
RS485B, RS485
differential signal
–
4
RS485B, RS485
differential signal
–
PE
5
PE, shielding ground
6
PE, shielding ground
-
RS485
-2
7
RS485A, RS485
differential signal+
8
RS485B, RS485
differential signal
–
Used for connecting to
RS485 slave devices.