Huawei SMU11B User Manual page 11

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