Aranet PRO supported BACnet services

The following BACnet services are supported by the Aranet PRO base station integration:

• Subscribe CoV (execute)
• Read Property (execute)
• Write Property (execute)
• Who-has (execute)
• Who-is (execute)

When a device needs to locate another device offering a specific service or object, it broadcasts a Who-Has message on the network. This message includes details such as the object type, instance number, and property being sought.

All devices on the network receive this broadcast. Devices capable of providing the requested service or object respond with an I-Have message, containing the network address of the device offering the desired service or object.

Similarly, a Who-Is broadcast is used to obtain network addresses of devices on the network. This is crucial for communication between devices without broadcasting to the entire system. A device seeking another device’s address sends a message specifying a Device Object Instance Number or a range of Instance Numbers, like “Who-Is device 3001” or “Who-Is device 3000 to 3099”.

Devices responding to the Who-Is message send an I-Am message either locally, remotely, or across the entire network. This allows devices needing information about the responders to acquire address details without generating additional network traffic. Additionally, it helps the responding device determine its route within the network for efficient communication.