Network Number

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The Network Number makes up part of a BACnet Address.


  • It is possible to have multiple IP subnets with the same BACnet Network Number.
  • A Network Number of 0 is often used to indicate 'local network' to a device. It is not valid to see this number in a BACnet NPCI.


The use of 0 as a Network Number to indicate 'local' or 'directly attached' network is common. However, a Network Number of 0 cannot be routed over BACnet Networks. Furthermore, for devices with more than one BACnet Interface, both having a Network Number of 0 would be contradictory. This usage is therefore never recommended.



Keyword List
APDU BBMD BVLC BVLL DADR DNET Encoding I-Am LSAP MAC NPCI NPDU NSAP NSDU SA SADR SNET

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