About Bacnet Comm: Network

The Network container under Bacnet Comm determines BACnet network-layer configuration for the station. This includes whatever port/protocols will be used (BACnet/IP, BACnet/Ethernet, and if a QNX-based host, BACnet MS/TP), as well as operation as a BACnet router (if multiple network ports will be used). You can access Bacnet Comm directly in the Nav side bar, as shown in Figure 2.

Figure 2. Bacnet Comm access using Nav side bar

Configuration properties determine if routing is enabled, as well as other routing-specific parameters.

By default, a newly added BacnetNetwork will have an Ip Port under its Bacnet Comm—the most popular BACnet protocol (BACnet/IP).

If needed, you can copy another network port into the Network container from the bacnet palette, as shown being done in Figure 3.

Each port has “Status” and “Fault Cause” properties that can help when troubleshooting.

Figure 3. Adding Network port from bacnet palette

Whatever port type (default IP included), all ports require a unique Network Number across the entire BACnet internetwork. The default Network Number value is -1 (inoperative). Ensure that each network port has a unique, positive Network Number for proper operation. The valid BACnet Network_Number range is from 1 to 65534.

Existing BACnet network(s) note:

If adding a station on an existing BACnet internetwork, specify the established BACnet/IP Network_Number and/or BACnet/Ethernet Network_Number currently in use.
If a JACE with one or more enabled MS/TP ports, specify a previously unused network number for each MstpPort (RS-485) port.