Huawei RMS-SNMP01A User Manual page 12

RMS-SNMP01A SNMP Card
User Manual
Silk Screen
COM
NETWORK
The SNMP card is equipped with a temperature and humidity sensor or an external dry
contact card over an RS485 bus.
Table 2-2 TEM_HUM port
Port
J3004
The COM port on the SNMP card is an RS485 southbound interface, connecting AI/DI
module or iBAT 2.0.
Table 2-3 COM port
Port
J3011
Issue 08 (2020-01-09)
Name
RS485 southbound
interface
Ethernet port
 The NETWORK port is protected by a security mechanism.

The COM port and TEM_HUM port use Modbus protocol, without reference to the access
authentication mechanism.
 The USB port connects to the GSM modem, without reference to the system management.
Pin No.
1
2
3
4
5
6
Table 2-3
Pin No.
1
2
3
Copyright © Huawei Technologies Co., Ltd.
Indicator
N/A
Green indicator
Yellow indicator
Table 2-2 lists the port definition.
Signal
GND
N/A
RS485–
RS485+
N/A
12V_OUT
describes the pin definitions of the port.
Signal
RS485+
RS485–
N/A
2 Overview
Description
This port connects to
AI/DI module or
iBAT 2.0.
Off: No network
cable is connected.
Steady on: A
network cable is
connected.
Blinking: The card
is communicating
with the network.
Port Type
RJ11
Port Type
RJ45
4