RMS-SNMP01A SNMP Card
User Manual
Copyright © Huawei Technologies Co., Ltd.
RS485 southbound
interface
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.
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.
The SNMP card is equipped with a temperature and humidity sensor or an external dry
contact card over an RS485 bus. Table 2-2 lists the port definition.
Table 2-2 TEM_HUM port
The COM port on the SNMP card is an RS485 southbound interface, connecting AI/DI
module or iBAT 2.0. Table 2-3 describes the pin definitions of the port.
Table 2-3 COM port