Instruction manual
C-Bus By Demand 3
Training Manual 20
2.3.2 BackboneTopology
AbackbonetopologyreferstowhenallC‐BusnetworksareconnectedtoasinglecentralC‐Bus
network.Figure13showshownetwork253,network252,network251andnetwork250,areall
connected to a centralised network 254. In this example network 254 is referred to as the
backbonenetwork,asallothernetw
orksconnecttoit.
Since a C‐Bus command only ever needs to communicate across one C‐Bus Network Bridge,
therewillbeminimaldelays(whicharenotnoticeable)
inmessagesacrossthenetworkbridge.
When utilizing this network topology, it is common for the backbone network to support a
centralised control of some type. The centralised control that may be used to control all of the
C‐Busnetworksare:
• SchedulePlusorHome
Gate
• TouchScreen(monochromeorcolour)
• PascalAutomationController.
Figure 9: C-Bus backbone network topology.
Itisrecommendedthatthistypeofnetworkconfigurationbeusedin:
• mediumsizedinstallations
• largesizedinstallations.
AdvantagesoftheBackbonetopologyare:
• Simplemodel
• Devicesonthebackbonenetworkcancommunicatetoallnetworks
• Individualnetworkdonotinterferewitheachother.
Disadvanta
gesoftheBackbonetopologyare:
• notallmessagesareroutedtoallothernetworks
• backbonenetwork
maybecomecongestedwithC‐Buscommandsfromothernetworks.