Relay

Configures a relay switch that turns the input signal on and off.


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Dialog Box Options

Option Description
Output when Relay Off Contains the following options:
  • Empty data—

    Indicates that if Enable is FALSE, the Result output is empty.

  • 0 values—

    Indicates that if Enable is FALSE, the Result output is a signal with all the characteristics of the input signal except that the amplitude is zero.
Test Configuration Contains the following option:
  • Enable—

    Enables or disables the Express VI. The default is OFF.
Input Signal

Displays the input signal.

If you wire data to the Express VI and run it, Input Signal displays real data. If you close and reopen the Express VI, Input Signal displays sample data until you run the Express VI again.
Result Preview

Displays a preview of the measurement. The Result Preview plot indicates the value of the selected measurement with a dotted line.

If you wire data to the Express VI and run the VI, Result Preview displays real data. If you close and reopen the Express VI, Result Preview displays sample data until you run the VI again. If the cutoff frequency values are invalid, Result Preview does not display valid data.

Inputs/Outputs

  • cexpdynwdt.png Signals —

    Contains the input signal or signals.

  • cbool.png Enable —

    Enables or disables the Express VI. The value you wire to this input overrides the value set in the Configure Relay dialog box. The default is OFF.

  • cerrcodeclst.png error in (no error) —

    Describes error conditions that occur before this node runs.

  • ierrcodeclst.png error out —

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

  • iexpdynwdt.png Result —

    Returns the resulting data based on the configuration of the Express VI.

    • Examples

    Refer to the following example files included with LabVIEW.

    • labview\examples\Express VIs\Express VI - Relay.vi