Requirement
The Tianjin Huibinyuan project needed shared monitoring and operating-mode control for Haier VRV air-conditioning systems in two buildings. The intended supervisory platform was Niagara AX3.8.
Solution
The source uses three HMI2004-Lite gateways for 14 equipment groups. Acquisition was configured from the manufacturer’s Modbus RTU point list, and the BACnet/IP server was enabled for supervisory integration.
Completed work and the remaining boundary
The article records field-communication commissioning and local HMI screens for initial user operation. The BA-system connection was still pending because of the site network. A configured BACnet interface must therefore not be described as completed Niagara integration.
This is an edited English summary of the original Chinese case article. Read the complete original case and diagrams.