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Connecting to Ethernet Targets with Multiple Networks Cards in the Host

Hardware: Compact FieldPoint>>Controllers, CompactRIO>>Controllers, PXI/CompactPCI>>Controllers, Image Acquisition (IMAQ)>>Compact Vision System

Problem:
I am trying to connect to a real-time system such as a PXI Chassis, cRIO, Compact FieldPoint, or Desktop ETS. My host computer has multiple Ethernet cards and I cannot connect to the real-time target and it is not showing up in Measurement & Automation Explorer (MAX). What is the problem?

Solution:
National Instruments software uses the system default network card to detect and connect to real-time devices and other remote targets. If you have multiple network adapters, it is possible that the secondary network adapter is searching for the targets. You must either:

• Connect your device to the default Ethernet card.
  

• Change the Ethernet port connected to the real-time target to default.

•  Navigate to Control Panel»Network Connections»Advanced»Advanced Settings...
  
  
  
  
• Press the Up and Down arrow to rearrange the adapters.  Move the RT connection to the top of the list to make it default.  Click OK to apply the changes.
  
  
  
  
• If this still does not work, sometimes disabling the second adapter, usually a wireless internet connection, allows the first to create a connection.
  

Related Links:
KnowledgeBase 42MG6A4M: Using an Ethernet Instrument with Multiple Ethernet/Network Cards
KnowledgeBase 3WK9NH9A: Deploying Shared Variables to a Specific Network Card
KnowledgeBase 2QAE9QIT: Can I Use Multiple Network Cards with LabVIEW?


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Report Date: 10/19/2006
Last Updated: 07/01/2009
Document ID: 42I77BXJ

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