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Use the Storage VIs on the Storage palette to read and write waveforms and waveform properties to binary measurement files (.tdm). Use .tdm files to exchange data between NI software, such as LabVIEW and DIAdem.

Note  The Storage VIs are available only on Windows.

The Storage VIs combine waveforms and waveform properties to form channels. A channel group organizes a set of channels. A file includes a set of channel groups. If you store channels by name, you can quickly append data to or retrieve data from an existing channel. In addition to numeric values, the Storage VIs support arrays of strings and arrays of time stamps. A reference number represents files, channel groups, and channels on the block diagram.

You also can use the Storage VIs to query files to obtain channel groups or channels that meet conditions you specify.

If the system requirements change during development and you need to add additional data to a file, you can change the format of the file without causing the file to become unusable.

Refer to the labview\examples\file\storage.llb for examples of using the Storage VIs.

You also can use the Read From Measurement File Express VI and the Write To Measurement File Express VI to read data from and write data to .tdm measurement files.