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Huawei TP482000B Series
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TP482000B V300R002C03 Telecom Power
(TP482000B-N20B1, TP482000B-N20B2,
TP481200B-N20B1, and TP481200B-N20B2)
User Manual
5 Components
Copyright © Huawei Technologies Co., Ltd.
38
Table 5-3 Port description
No.
Port
Description
Protocol Compliance
1
RS232
Connects to a network management
system (NMS).
YDN protocol
Baud rate: 9600 bits/s or 19,200 bits/s
2
Control area
network (CAN)
Connects inter-cabinet
communications cables.
CAN 2.0
3
Fast Ethernet (FE)
Connects to an NMS.
10/100M auto-negotiation
HTTPS, SNMP, and Bin
4
COM
Connects to an intelligent
communications device.
Modbus protocol
5
RS485
Connects to a personal computer (PC)
or an NMS.
YDN protocol or Huawei master/slave
protocol
6
PELU
Cabinet e-label port.
N/A
7
DIN
Four dry contact inputs.
N/A
8
ALM
Eight dry contact outputs.
N/A
Figure 5-4 RS232 port pins
Table 5-4 RS232 port pin definition
Pin
Signal
Description
2
RXD
Receive
3
TXD
Transmit
5
GND
Ground
1, 4, 6, 7, 8, and 9
N/A
N/A

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