Huawei NetCol8000-A Quick Manual page 26

Third-Party NMS Monitoring (SNMP/Modbus-TCP/Modbus-RTU Protocol)
1. Connect one end of the monitoring network cable (standard network cable) to the COM/FE port
on the main control module, and connect the other end to the monitoring device.
2. When the host monitors the smart cooling product through a third-party NMS, connect the
monitoring network cable based on whether the smart cooling product is cascaded.
In the case of non-cascading, connect the COM port on each smart cooling product to
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the customer's monitoring system. After powering on the device, set the "RS485
monitoring grouping" of the each smart cooling product to "Enable". Setting path:
Settings > Comm Settings > Modbus Settings.
In the case of cascading, connect the COM/FE port on the last smart cooling product in
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each monitoring group to the monitoring device. After powering on the device, set the
"RS485 monitoring grouping" of the last smart cooling product in each monitoring
group to "Enable". Setting path: Settings > Comm Settings > Modbus Settings.
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