Ethernet Network; Network Topologies - Siemens Desigo TRA Mounting And Installation Manual

Topologies
Star topology
Switch
Line topology
Switch
Notes
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8

Ethernet network

8.1

Network topologies

You can use the following bus topologies:
• Star topology (general).
• Line topology (for room automation).
PXC3...
• The number of room automation stations is limited to 20 for a line topology
(daisy chain).
• The next device has no AC 24 V power when a room automation station is
removed. The connection exists only on the board, but not on the terminal block.
• The Ethernet switch is inactive when a room automation station has no AC 24 V
power. The next devices, if in line topology, are disconnected from the network.
For secure operation of the system it is recommended to supply each room
automation station separately with AC 24 V.
Mounting and installation
Ethernet network
PXC3... PXC3..
Switch Switch
PXC3...
Switch Switch
Segment (S)
Segment (S)
PXC3... PXC3...
Switch
PXC3... PXC3...
Switch Switch
Segment (S)
CM111043en_03
2013-02-23