National Instruments cDAQ-9185 - Other Topologies

© National Instruments | 2-5
cDAQ-9185/9189 User Manual
Figure 2-3. Star Topology
Advantages:
• Unpowered nodes and/or node failure does not disrupt network communication with other
nodes
• Failure of any single Ethernet cable does not disrupt network communication when you
have a redundant link
• Additional nodes or heavier network traffic affects network performance less than the other
topologies
• Simple installation, expansion, and troubleshooting
Note Network configuration and programming require careful consideration. Visit
ni.com/info and enter cdaqenet for information about exploiting link
redundancy and automatically improving reliability.
Disadvantages:
• Most costly of the recommended topologies
• Requires an external switch (external 802.1AS switch for network synchronization)
• Covers the least distance
Other Topologies
For information about designing Ethernet measurement systems for synchronization, visit
ni.com/info and enter cdaqenet.
Node
Node
Node
Host
Networking
Redundant Link (optional)
External
Switch
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