User Manual

Planning (hardware)
Ethernet
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7.5 Ethernet
For detailed information on Ethernet, see:
●
Ethernet, TCP/IP, MS/TP and BACnet fundamentals (CM110666)
●
Practical guide on IP networks in building automation and control (CM110668)
●
Practical guide on BACnet networks in building automation and control (A6V11159798)
●
Desigo building automation and control - Technical principles (CM110664)
●
IT security on installations with Desigo (CM110663)
The following provides only specific notes on topology.
Topologies
You can use the following bus topologies:
● Star topology
● Line topology (for web server)
Star topology
Touch panels can only be connected in a star topology.
Line topology
The number of devices is limited to 20 for a line topology (daisy chain).
Availability/reliability
The Ethernet switch does not work on a device without 24 V power. The following devices, connected in a line
topology, are no longer on the network. As a result, each web server should be separately powered with 24 V
for secure system operation.
Switch
Switch Switch
Switch
PXG3.Wx00
PXG3.Wx00
PXG3.Wx00PXG3.Wx00
Segment (S)
Switch
Switch Switch
Switch
PXG3.Wx00
PXG3.Wx00
PXG3.Wx00PXG3.Wx00
Segment (S)
Segment (S)
Switch