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ETP4860-B1A2 Embedded Power
User Manual
Communicatio
ns Ports
NOTE
Figure 3-12 COM port pins
Table 3-17 Pin definitions for the COM_IN port
Pin
1
2
3
4
5
6
7
8
Table 3-18 Pin definitions for the COM_OUT1, COM_OUT2, and COM_OUT3 ports
Pin
1
2
3
4
5
6
Issue 04 (2021-01-05)
Communications
Parameter
All these ports are protected by a security mechanism.
Copyright © Huawei Technologies Co., Ltd.
Communications
Protocol
Signal
RS485+
RS485-
12 V
RS485+
RS485-
2
I
C_SCL
2
I
C_SDA
GND
Signal
RS485+
RS485-
12 V
RS485+
RS485-
Reserved
3 Components
Function
Description
RS485 data +
RS485 data –
Power supply
RS485 data +
RS485 data –
2
I
C clock signal
2
I
C data signal
Ground (PE)
Description
RS485 data +
RS485 data –
Power supply
RS485 data +
RS485 data –
-
30
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