Real-Time controls for cRio

[vicki 2020]

I'm using a cRio 9074 to run a detector then acquire data from an ADC module.  I store this data from a DMA FIFO into an array on the RT.  I need to vary the program running my detector, so I need to alter control variables on the RT after it's deployed from my host PC.  Is this possible?  I also want that array to be be populating continuously, but I want to be able to occassionally pull the data onto my host PC.  What's the best method for this?  I was attempting to use shared variables but I was receiving an error ("Error -1967357949 Unable to query Measurement and Automation for the Shared Variable Engine.  Make sure the Shared Variable Engine exists on the RT target and check that the network connection is valid").

[taper · Accepted solution]

Shared Variables are the way to go on this.  Reading http://www.ni.com/white-paper/4679/en should help.  Try manually deploying your SV Engine to the cRIO from the project menu.  Does your cRIO have the shared variable software installed?  You can check that through MAX.

[vicki 2020]

Thanks!  I needed to install the software through MAX