Port
Silkscreen
Description
Northbound
communications
port
COM
Connects to an UPS.
DB26
MDU
Supports FE, RS485, I2C, CAN, and
other signals.
DO_1
DO_1
Output dry contact 1 function setting
for the lithium battery cabinet
DO_2
DO_2
Output dry contact 2 function setting
for the lithium battery cabinet
EPO
NO
If the normally open (NO) port is
connected to the EPO_12V port,
emergency power-off (EPO) is
triggered.
12V
NC
If the normally closed (NC) port is
disconnected from the EPO_12V port,
EPO is triggered.
12V
Figure 2-10 COM pins
Table 2-5 COM pin definition
Pin
Description
1
RS485+
2
RS485-
3
-
4
RS485+
5
RS485-
6
GND
SmartLi 2.0
User Manual
2 Overview
Issue 09 (2022-01-30)
Copyright © Huawei Technologies Co., Ltd.
22