Huawei SUN2000-6KTL-L1 Quick Manual page 12

COM Port Pin Definitions
Crimping Two Signal Cables
Crimping Three Signal Cables
No. Label Definition
1 RS485B, RS485
485B1
differential signal–
2 RS485A, RS485
485A1
differential signal+
3 RS485B, RS485
485B2
differential signal–
4
RS485A, RS485
485A2
differential signal+
5 GND GND of the enable
signal/12V/DI1/DI
2
6 EN+ Enable
signal+/12V+
7 DI1 Digital input signal
1+
8 DI2 Digital input signal
2+
11
Description
Solar inverters cascading
scenario: used for connecting
to the solar inverters.
Used for connecting to the
RS485 signal ports of the
battery and power meter.
When both battery and power
meter are configured, they
need be crimped to the 485B2
and 485A2 ports.
Used for connecting to GND of
the enable signal/12V/DI1/DI2.
Used for connecting to the
enable signal of the battery
and the 12V positive signal.
Used for connecting to the DI1
positive signal. It can be used
for connecting to the DRM0
scheduling signal or reserved
for the rapid shutdown signal.
Used for connecting to the DI2
positive signal. It can be
reserved for the feedback
signal of the Backup device.