User Manual

Overview
Merging BACnet/IP networks
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Siemens SCALANCE Distribution Switches (XB205-3) are equipped as a managed layer 2 switches:
● Connects over various floors
● Can further expand the project
● Support the expansion per VLAN and ring topology
● Offers port mirroring (network analysis)
The Siemens SCALANCE Edge Switch (XB005) distributes on a floor as an unmanaged layer 2 switch:
● Important Desigo room automation stations are installed in a star topology (central functions, important
rooms)
● A few, critical automation stations can be connected in a daisy chain topology
Fiber optics network the distribution switches over longer distances. The distribution and networking on
the floors up to the edge swtiches over copper cables.
Mid-size to large project
The next example also illustrates a clearly structured network. The distribution switches are networks in
ring technology, improving network availability and reliability.
An independent IP network is set up together with a layer 3 core switch to which the most important
network components are connected.
XB005
(Power AC 24 V)
Desigo Room Automation Stations
XB004-1
(Power AC 24 V)
Desigo Primary Automation Stations
XB205-3
XB205-3
Floor 1
Basement
XB005
(Power AC 24 V)
Desigo Room Automation Stations
XB205-3
Floor 2
Small Project
Desigo CC
Workstation
BACnet/IP over
Ethernet (Twisted Pair)
Ethernet (Fiber Optics)