LabVIEW

cancel
Showing results for 
Search instead for 
Did you mean: 

Basic DAQ Question with OPC UA

Hi All,

 

I'm very new to Labview and am trying to set up an OPC UA server. I followed the steps here (https://knowledge.ni.com/KnowledgeArticleDetails?id=kA03q000000x2CMCAY&l=en-US) to create a shared variable, then realized shared variables aren't compatible with OPC UA and only with OPC DA. 

 

So, then I created the OPC UA server, and a read and write function, using this tutorial (https://www.youtube.com/watch?v=AoneC2cSzto&t=2251s&ab_channel=IndustrialITandAutomation).

 

Now, all I need to do is push data from a DAQ analog input to the OPC UA server. I've tried to do it shown below circled in red, however I am not seeing any of the data show up on the OPC Read VI. It is showing up in the "Numeric" box in the client VI, however, so I know the DAQ is reading the voltage input properly. Any help with what I'm doing incorrectly would be greatly appreciated! I really don't know where to start. Thank you very much.

 

Help.png

0 Kudos
Message 1 of 2
(1,559 Views)

Would it be possible for somebody to please answer the above question? I'm looking for the same answer and cannot find any other information on transmitting DAQ waveforms through OPC UA.

 

Thanks!

0 Kudos
Message 2 of 2
(1,441 Views)