Huawei ECC500 - RS485 Communication Card

ECC500
User Manual
3 Configurations and Port
Issue 05 (2020-03-16)
Copyright © Huawei Technologies Co., Ltd.
20
Parameter
Description
Structure
The subrack of the power module is less than 1 U high and occupies two
slots of the ECC500 subrack.
3.2.3 RS485 Communication Card
The RS485 communication card provides five half-duplex RS485 communication interfaces
that are compatible with two-wire and four-wire cables and connect to the southbound
intelligent equipment, Independent Deployment AI/DI Unit, and intelligent ambient
temperature and humidity sensor. Figure 3-4 shows ports on the front panel of the RS485
communication card.
Figure 3-4 Front panel of the RS485 communication card
(1) COM1 port
(2) COM2 port
(3) COM3 port
(4) COM4/12V port
(5) COM5/12V port
(6) Indicators
Table 3-6 describes indicators on the front panel of the RS485 communication card.
Table 3-6 Description of indicators on the front panel of the RS485 communication card
Silk Screen
Color
Meaning
Status
Description
PWR
Green
Power indicator
Steady on
The power
supply is
normal.
Off
The RS485
communication
card is faulty or
has no DC
input.
RUN
Green
Run indicator
Blinking (1
second on and 1
second off)
The RS485
communication
card is
communicating
with the main