Technically you would need a code module to do the actual reading. TestStand is a test executive and a scripting language that calls code modules. Code modules can be written in LabVIEW, .NET, ActiveX, C, C++, etc... So if one of those languages can do it then TestStand can call it.
In addition to any command line calls, adapters are what interface to the different languages. Here is more about them: https://www.ni.com/docs/en-US/bundle/teststand/page/module-adapters.html
Cheers,
