Huawei BoostLi ESM-48100B1 - Page 11

BoostLi Energy Storage Module ESM-48100B1
User Manual
1 Product Description
Issue 03 (2020-01-08)
Copyright © Huawei Technologies Co., Ltd.
5
No.
Silk Screen
Item
Description
N·m and the recommended cable size
is 25 mm
2
. If the ESM is used at a
temperature below 45°C, the cable
size can be smaller but should be at
least 16 mm
2
.
Figure 1-4 RJ45 pins
Table 1-3 Pin definitions of communications ports
RJ45 Pin
Signal
Description
Remark
1
RS485 T+
RS485 transmission
+

Four-wire RS485
communications,
complying with
the Modbus
protocol.

Baud rate: 9600
bit/s.
2
RS485 T-
RS485 transmission
–
3
NC
Reserved
4
RS485 R+
RS485 reception +
5
RS485 R-
RS485 reception –
6
NC
Reserved
-
7
CANH
Positive terminal for
CAN
communications
Used to report
alarms to a
monitoring unit and
exchange data
between ESMs
connected in
parallel.
8
CANL
Negative terminal
for CAN
communications