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Bus cable and length
Switch
Reference documents
Siemens
Building Technologies
8.2
Cables
PXC3 room automation stations are connected to one another via switches and
Ethernet cables with RJ45 connectors.
The following conditions must be met:
• Standard Ethernet cable
• Shielded or unshielded
STP (Shielded Twisted Pair) or UTP (Unshielded Twisted Pair).
• Length between switch and PXC3
• Length between PXC3 devices
• Number of devices under a line topology
• Standard IT product at 100 MB or 1 GB.
Additional information:
• Desigo Technical principles manual [3], Section 3 (overview), 16 (network view)
and 18 (system limits).
• Ethernet, TCP/IP as well as BACnet on Ethernet/IP principles [6].
Mounting and installation
Ethernet network
min. category 5
max. 100 m.
Max. 100 m.
max. 20.
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