Hello,
I am not familiar with that hardware, but if you have a dll from the manufacturer to communicate with it, there's a good chance you'll be able to use the call library function node in LabVIEW. You should make sure you're passing the parameters to your dll function correctly, where knowing the function's prototype and referring to the
Using External Code in LabVIEW manual, as well as the Call DLL.vi shipping example with LabVIEW (see Help -> Find Examples...), should help you get started.
Best Regards,
JLS