Protocol note
Integrating LoRaWAN Sensors into a BACnet BMS
Object mapping, update rates and control — how wireless sensors become normal BACnet points in your BMS.
MatrixAI LoRaWAN engineering team · · 5 min read
Why integrate into the BMS?
Operators want one system. Presenting LoRaWAN data as BACnet objects means the BMS can trend, alarm and schedule on wireless points exactly like wired ones.
Object mapping
- Analog values → AI or AV objects with units
- Status values → BI or BV objects
- Modes → multi-state values
- Device health → separate objects for battery and signal
Update rates and COV
Wireless values change at the device reporting interval. Configure COV and trend intervals accordingly and expose last-update timestamps so operators understand data age.
Writes and control
BACnet writes can be translated into LoRaWAN downlinks for thermostats, valves and relays. Class C devices provide the quickest response for control points.