Huawei iMaster NetEco V600R021C10 Device Installation And Commissioning Manual page 132

iMaster NetEco
Device Installation and Commissioning Guide (Data
Center)
●
Issue 02 (2021-05-12)
Figure 4-39 COM ports
(1) COM1 port
NO TE
– When there is only one smart cooling product, it communicates with the ECC
collector over the COM1 port.
– If multiple smart cooling products are networked, connect the COM1 port on the
first smart cooling product to the COM port on the ECC collector, connect the
COM2 port on the first smart cooling product to the COM1 port on the second
smart cooling product, and connect the other smart cooling products in the same
way. A maximum of four smart cooling products can be networked.
Both the COM ports of NetCol5000-A050, NetCol5000-A042, NetCol5000-
A035 and NetCol5000-A025 are on the main control modules at the smart
cooling product rear doors. The NetCol5000-A042 is used as an example to
show the position of the main control module.
Copyright © Huawei Technologies Co., Ltd.
4 Connecting Monitoring Cables to Devices
(2) COM2 port
121