Rs485 Communication Card - Huawei ECC500 User Manual

ECC500
User Manual
Parameter
Structure

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.
communication card.
Figure 3-4 Front panel of the RS485 communication card
(1) COM1 port
(4) COM4/12V port
Table 3-6
Table 3-6 Description of indicators on the front panel of the RS485 communication card
Silk Screen
PWR
RUN
Issue 05 (2020-03-16)
Description
The subrack of the power module is less than 1 U high and occupies two
slots of the ECC500 subrack.
describes indicators on the front panel of the RS485 communication card.
Color
Green
Green
Copyright © Huawei Technologies Co., Ltd.
Figure 3-4 shows ports on the front panel of the RS485
(2) COM2 port
(5) COM5/12V port
Meaning
Power indicator
Run indicator
3 Configurations and Port
(3) COM3 port
(6) Indicators
Status Description
Steady on The power
supply is
normal.
Off The RS485
communication
card is faulty or
has no DC
input.
Blinking (1 The RS485
second on and 1 communication
second off) card is
communicating
with the main
20