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ETP4860-B1A2 Embedded Power
User Manual
Communications
Port
COM2
NOTE
Figure 3-9 Pins in the COM port
Table 3-12 Pin definitions for the COM1 port
Pin
1
2
3
4
5
6
7
8
Table 3-13 Pin definitions for the COM2 port
Pin
1
Issue 04 (2021-01-05)
Communications
Parameter
Baud rate: 9600
bit/s, 19200 bit/s,
or 115200 bit/s
All these ports are protected by a security mechanism.
Signal
TX+
TX-
Reserved
RX+
RX-
PGND
Reserved
Reserved
Signal
TX+
Copyright © Huawei Technologies Co., Ltd.
Communicatio
ns Protocol
Master/slave
protocol
Description
Transmits data over RS485.
-
Receives data over RS485.
Grounding (PE)
-
-
Description
Transmits data over RS485.
3 Components
Function
Southbound and
northbound
multiplexing
communication port
● Connects to a
Huawei NMS.
● Connects to
Huawei lower-
level devices.
26
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