Hello,
The basic architecture for LabVIEW FPGA applications (generally) consists of code running on your FPGA which determines your data acquisition rate. The values are read onto your real-time or Windows based host VI at which point they are converted from integer to the double precision number which they are meant to represent.
It sounds as if you might want to take a look at some of the resources that are available to help get you started programming LabVIEW for cRIO applications. The LabVIEW Example Finder contains some great examples that show the overall architecture for FPGA applications: Help » Find Examples » Toolkits and Modules » FPGA » CompactRIO » Basic I/O. These will also show how the conversion is performed to translate integers to actual values. You may also want to take a look at the resources linked in the
Getting Started with LabVIEW FPGA knowledgebase. I hope this information is useful for you. Please post back if we can provide any other additional assistance. Thanks,
Mike D.
National Instruments
Applications Engineer