The structure of the BACnet network in building automation projects depends on:

  • topology
  • type and number of devices
  • requested functionality such as interaction in the whole site
  • project IT infrastructure to be used.

This chapter is structured in small, medium, and large automation controls projects accordingly and covers the automation range PXC4…7 with integration of clients and up to 250 BACnet devices (PXC, DRA, and third-party).

For system topologies with a higher number of automation stations PXC4…7 and/or room controllers (DRA/third-party) with more than 250 devices in total, see "Scalable Desigo system - System design" and other sections in this Application Guide.

For system topologies with PXC64/128 and PXC00..200 devices from existing Xworks Plus (XWP) projects combined and extended with PXC4, PXC5, and PXC7 automation stations, see "Extending existing XWP projects with PXC4, PXC5, and PXC7 automation stations" in Desigo PXC4, PXC5 & PXC7 Planning overview (A6V13054435).