1.2 Expansion Box MUE03A
Appearance
Figure 1-5 MUE03A appearance
(1) Power input port
(2) Communications port
COM_IN
(3) Communications port
COM_OUT1
(4) Communications port
COM_OUT2
(5) Communications port
COM_OUT3
Power Input Port
Table 1-7 Pin definitions for the power input port
Pin
Description
RTN
Power
-48V
Power supply –
Communications Ports
Table 1-8 Communications port description
Communications
Port
Communications
Parameter
Communications
Protocol
Function
COM_IN
Baud rate: 9600
bit/s, 19200 bit/s,
or 115200 bit/s
Master-slave and
Modbus protocols
Connects to the
monitoring
module.
COM_OUT1
Baud rate: 9600
bit/s, 19200 bit/s,
or 115200 bit/s
Master-slave and
Modbus protocols
Connects to an
intelligent device.
COM_OUT2
COM_OUT3
SMU11B Site Monitoring Unit
User Manual
1 Description of Components
Issue 03 (2022-06-06)
Copyright © Huawei Technologies Co., Ltd.
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