Huawei ECC800 User Manual page 26

ECC800 Data Center Controller
User Manual
Item
Indicator
There are four RS485 ports (COM1/12V–COM4/12V). Table 3-9 provides the RS485 port pin
definitions.
Table 3-9 RS485 port pin definitions
Item
Pin sequence
Indicator
There are six AI/DI dry contact inputs (AI/DI_1–6). Table 3-10 provides the AI/DI port pin
definitions.
Issue 02 (2019-02-28)
Pin 2
Pin 3
Pin 4
Pin 5
Pin 6
Pin 7
Pin 8
Green
indicator
Yellow
indicator
Pin 1
Pin 2
Pin 3
Pin 4
Pin 5
Pin 6
Pin 7
Pin 8
Green
indicator
 Pins 1, 2, 4, and 5 identify sensor types.
 Pin 3 and Pin 8 are power output ports.
Copyright © Huawei Technologies Co., Ltd.
Description
TX-
RX+
N/A
N/A
RX-
N/A
N/A
Linked, steady on
ACT data communication, blinking
Description
RS485+
RS485–
12 V DC_OUT
RS485+
RS485–
N/A
N/A
GND
Power output indicator

Steady on: The 12 V DC output is normal.
 Off: No 12 V DC output is provided.
3 Device Description
17