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Read Waveforms from File VI

LabVIEW 2013 Help

Edition Date: June 2013

Part Number: 371361K-01

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Owning Palette: Waveform File I/O VIs

Requires: Base Development System

Opens a file created with the Write Waveforms to File VI and reads one record of the file. Each record might contain one or more separate waveforms. The VI returns all waveforms in record and first waveform in record as separate outputs. To retrieve all records in the file, call this VI in a loop until the end of the file is reached.

This VI returns an end-of-file error in the error out output.

Use the pull-down menu to select an instance of this VI.

Read Waveforms from File

file path specifies the file where the waveform is located. If you do not wire this input, LabVIEW displays a non-native file dialog box instead of a native file dialog box.
offset specifies in records which record to read from the file. The first record is 0. The default is 0.
error in describes error conditions that occur before this node runs. This input provides standard error in functionality.
new file path returns the path to the file.
first waveform in record returns the data of the first waveform in the record.
all waveforms in record returns the data from all waveforms in the record. If there is only one waveform in the record, this output is identical to first waveform in record.
error out contains error information. This output provides standard error out functionality.

Read Waveform from File (Digital) VI

file path specifies the file where the waveform is located. If you do not wire this input, LabVIEW displays a non-native file dialog box instead of a native file dialog box.
offset specifies in records which record to read from the file. The first record is 0. The default is 0.
error in describes error conditions that occur before this node runs. This input provides standard error in functionality.
new file path returns the path to the file.

Returns the data of the first waveform in the record.

error out contains error information. This output provides standard error out functionality.

 

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