How Can I Connect Several Expansion I/O for LabVIEW RIO Systems?

Updated Mar 26, 2018

Reported In

Hardware

  • Ethernet Switch
  • Ethernet Device
  • Ethernet Cable
  • C Series EtherCAT Interface Module
  • Expansion Module for CompactRIO

Driver

  • NI-RIO

Issue Details

I have several expansion I/O for LabVIEW RIO and I want to interconnect them with my CompactRIO controller. What is the right way to do it?

Solution

National Instruments has 4 different options to expand the I/O capabilitites of your RIO system. Depending on the option you are using, the way to connect the expansion chassis will vary. Refer to Table 1 to compare configurations for each BUS.
 
BUSConfiguration
MXI-Express RIODaisy Chain/Star
Ethernet RIOSame as Ethernet
EtherCAT RIODaisy Chain/Star
WSNStar/Tree/Mesh
Table 1. Connection configuration for each Expansion BUS.

See images below to know how the connections are made with different configurations.

Image 1. Daisy Chain configuration.


 
Image 2. Ethernet Configuration


 

3. Star/Tree/Mesh configuration

For more information about Expansion  I/O for LabVIEW RIO systems go to related links.

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