You will need to convert the file into an HWS. So you'll first need to read the file (could use the "Read from Measurement" VI). You will need to convert the signal output to a Waveform (Using the "Convert From Dynamic Datatype" VI). Then send you waveform(s) to the "NI-HWS Express Save" VI. You might need to use the "Build Waveform" VI as an alternative to specify the delta t between each point.
Hence, you need to make a waveform from the data and then send that to the "NI-HWS Express Save" VI.
Hope this Helps,
Vincent Carpentier, Ing./Eng.
CLA, CPI
Neosoft Technologies
www.neosoft.ca
DQMH Trusted Advisor