Lenze PROFINET Controller-based Automation - Manual (Page 14)

4 The Lenze automation system with PROFINET
4.2 Network topology
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Lenze · Controller-based Automation · PROFINET® Communication Manual · DMS 1.2 EN · 04/2014 · TD17
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4.2 Network topology
It is typical of PROFINET to have a rather free topology, the limiting factor of which is large message
latencies due to e.g. switches connected in series.
PROFINET supports the following topologies:
Line topology
[4-2] Line topology (M = I/O master, D = I/O device)
Star topology
[4-3] Star topology (M = I/O master, D = I/O device)
Tree topology
[4-4] Tree topology via switches (M = IO master, SW = switch, D = I/O device)
M
D D D D
M
D D D
sw
D D D
sw
D D D
sw
D D D
M