Bus Topologies - Siemens Desigo TRA Mounting And Installation Manual

64 bus devices
on one line
Notes
Permissible bus
topologies
Advantage:
Tree topology
Branching and
connection variants
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Siemens
Building Technologies
9.2

Bus topologies

Up to 64 bus devices can be installed on one line (main line as well). No
restrictions apply to the type mix.
• There is no need to calculate the bus load number E for up to 64 devices.
• A maximum of 64 devices may be installed even if devices requiring less power
are used.
Permissible bus topologies are: Tree, line, and star topologies. These topologies
can be mixed as needed. However, ring topologies are not allowed.
The tree topology is advantageous if a large network must be created.
Tree topology (with stub lines)
PL-Link
N1 .. N7 Bus devices
Device with screw terminals
PL+ PL-
PL+
PL-
N1 .. N8 Bus devices
Mounting and installation
PL-Link room bus
Line topology (with loops)
PL-Link
T branch with bus terminals
PL+
PL-
PL+ PL-
Device with spring cage
terminals
- -
PL + PL PL + PL
CM111043en_03
2013-02-23