Table 1-5 Pin definitions for the COM port
Pin
Signal
Description
1
RS485+
RS485 data +
2
RS485-
RS485 data –
3
12V
Power supply
4
RS485+
RS485 data +
5
RS485-
RS485 data –
6
SCL
I
2
C clock
7
SDA
I
2
C data
8
GND
Grounding
Figure 1-4 Pins in the FE port
Table 1-6 Pin definitions for the FE port
Pin
Signal
Description
1
TX+
Transmits data over FE.
2
TX-
3
RX+
Receives data over FE.
6
RX-
4, 5, 7 and 8
NA
-
SMU11B Site Monitoring Unit
User Manual
1 Description of Components
Issue 03 (2022-06-06)
Copyright © Huawei Technologies Co., Ltd.
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