Collector Express VI

Owning Palette: Signal Manipulation Express VIs

Requires: Base Development System

Collects input signals and returns the most recent data, up to the specified maximum number of samples per channel. When you call this Express VI repeatedly and the Express VI reaches the maximum number of samples per channel, the Express VI discards the oldest data and adds the newest data to the collected samples.

Example

Dialog Box Options

Block Diagram Inputs

Block Diagram Outputs

Add to the block diagram

Find on the palette

Dialog Box Options

Parameter	Description
Maximum number of samples	Specifies the maximum number of samples per channel you want the Express VI to collect. The default is 1000.

Block Diagram Inputs

Parameter	Description
Signals	Contains the input signal or signals.
Enable	Enables or disables the Express VI. The default is ON or TRUE.
error in	Describes error conditions that occur before this node runs.
Reset	Controls the initialization of the internal state of the VI. The default is FALSE.

Block Diagram Outputs

Parameter	Description
Collected Signals	Returns the most recent samples of collected data.
error out	Contains error information. This output provides standard error out functionality.

This Express VI operates similarly to the following VIs and functions:

Build Waveform (Analog Waveform)
Build Array

Example

Refer to the Express VI - Collector VI in the labview\examples\Express VIs directory for an example of using the Collector Express VI.

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