Omron CJ1W-PNT21 Operation Manual page 35

Setting up the PROFINET IO network
3-4-1-2 Star
The star topology is the most common topology for Ethernet networks. A
central switch allows for communication between all connected devices.
Advantages of the star topology:
• Flexible adding and removing of devices without changes in existing
connections.
• Easy diagnostics of the network by fault isolation.
• Reduced data traffic per connection.
Disadvantages of the star topology:
• Additional cabling effort and cost.
• Failure or power disruption of the switch will fail the complete network.
/i
Part Recommendation
Switch Industrial Ethernet Switch (either managed or unmanaged).
Switch
Figure 3.9: Ethernet star topology
Section 3-4
21