Omron CJ1W-PNT21 Operation Manual page 36

Setting up the PROFINET IO network
3-4-1-3 Tree
22
The tree topology is a hierarchical combination of multiple star topology
interconnected with each other.
Switch
Advantages of the tree topology:
• Flexible adding and removing of devices without changes in existing
connections.
• Easy diagnostics of the network by default isolation.
• Further reduced data traffic per connection than when in star topology.
Disadvantages of the tree topology:
• Additional cabling effort and cost.
• Failure or power disruption of one switch will fail a part of the network.
/i
Part Recommendation
Switch Industrial Ethernet Switch (either managed or unmanaged).
Figure 3.10: Ethernet tree topology
Section 3-4
Switch