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RMS-SNMP01A SNMP Card
User Manual
Table 2-1 Port function description
Identifier
TEM_HUM
USB
COM
NETWORK
The SNMP card can be connected to a T/H sensor or an external dry contact card
through the RS485 communications bus.
Figure 2-2 TEM_HUM port
Table 2-2 TEM_HUM port signal definition
Component
Location
J4
Issue 10 (2024-01-30)
Port
Port for a
southbound
device
USB port
RS485
southbound port
Ethernet port
NO TE
● The NETWORK port is protected by a security mechanism.
● The COM and TEM_HUM ports comply with the Modbus standard protocol. Access
authentication mechanism is not included.
● The USB port is connected to an external SMS modem and does not manage the
system.
No.
1
Copyright © Huawei Digital Power Technologies Co., Ltd.
Indicator
Function
-
Used to connect to a T/H
sensor or an external dry
contact card
-
Used to connect to an SMS
modem.
-
Used to connect to a
standalone AI/DI module.
Green
Off: no network cable
indicator
connected
Steady on: a network cable
connected
Yellow
Blinking: network
indicator
communication
Signal
RS485+
2 Overview
Port Type
RJ45
4
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