I believe these are Network Published Shared Variables:
Can you talk a little about the hardware you're working with? If so, I can help you find some good examples to get you started with it in LabVIEW RT.
Looks like you're trying to read some values from a module in your cRIO, and this document should help you get started with a basic application using the cRIO Scan Interface.
Getting Started with CompactRIO - Performing Basic Control: http://www.ni.com/tutorial/11197/en/
The CompactRIO Developer's Guide can help explain concepts when getting started as well: https://www.ni.com/compactriodevguide/
Additionally, in LabVIEW, you'll be able to go to Help > Find Examples > Browse > Hardware Input and Output > CompactRIO > Module Specific IO and find some example projects with some of the modules you have.