Communicate Two TestStand Sequences Using LabVIEW

Updated Nov 8, 2018

Reported In


  • LabVIEW
  • TestStand

Issue Details

I have two computers which are running different test sequences. These test sequences should communicate with each other in some steps. I am using LabVIEW with my application. How can I make this communication happen?


There are multiple ways to connect two LabVIEW applications so they can talk to each other. Use these communication techniques to develop your connectivity between sequences:


  1. Using Shared Variables
  2. Using SystemLink Cloud's Messages API
  3. Using LabVIEW's VI Server
  4. Performing low level TCP or UDP communication
  5. Using a Web Service


You can find more options to connect between a Host PC and a Distributed application in the following white paper: Understanding Communication Options Between the Windows HMI, RT Processor, and FPGA (refer to the section 6. "RT/HMI Communication") 

Additional Information

National Instruments recommends not depending on more than machine running a test sequence to ensure maximum reliability.


If you require connecting to a server's database to log results, please consider using the built-in TestStand reporting options instead.


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