Item Description
Pin3 GE2+
Pin4 GE3+
Pin5 GE3-
Pin6 GE2-
Pin7 GE4+
Pin8 GE4-
Indicator Green
indicator
Linked, steady on
Yellow
indicator
ACT data communication, blinking
Table 4-16 COM1/AIDI_4, COM2/AIDI_5 port pin denitions
Item Description
Pin
sequence
Pin1 RS485+
Pin2 RS485-
Pin3 12V DC_OUT
Pin4 RS485+
Pin5 RS485-
Pin6 DI-
Pin7 DI+
Pin8 GND
Indicator Green
indicator
Power output indicator
● Steady on: The 12 V DC output is normal.
● O: No 12 V DC output is provided.
Table 4-17 COM3/12V port pin
denitions
Item
Description
Pin
sequence
Pin1 RS485+
Pin2 RS485-
Pin3 12V DC_OUT
iMaster NetEco
Device Installation and Commissioning Guide (Data
Center) 4 Connecting Monitoring Cables to Devices
Issue 02 (2021-05-12) Copyright © Huawei Technologies Co., Ltd. 97