Chapter 7 Extending LabVIEW SignalExpress Projects with LabVIEW
Getting Started with LabVIEW SignalExpress 7-2 ni.com
Complete the following steps to import a VI from LabVIEW with the Run
LabVIEW VI Step.
1. Select File»Open Project, navigate to the SignalExpress\
Examples\Tutorial directory, and double-click User
Step.seproj.
This project uses the Create Signal step to generate a signal.
2. Click the Add Step button and sel ect Run LabVIEW VI»Run
LabVIEW 8.2 VI.
The VI you run in this exercise was saved in LabVIEW 8.2. You must
use the version of the Run LabVIEW VI step that matches the version
of LabVIEW you saved your VI in.
3. Click the browse button on the Step Setup dialog box and select
Limiter-LV82.vi in the LabVIEW SignalExpress\Examples\
Tutorial directory. The Limiter-LV82 VI accepts a time-domain
waveform as an input, clips the signal above and below values that you
specify in the Step Setup dialog box, and returns the clipped
waveform as an output signal.
When you import a LabVIEW VI, LabVIEW SignalExpress maps the
inputs of the VI as parameters and the outputs of the VI as output
signals in LabVIEW SignalExpress.
You can define whether the inputs for VIs become input signals or
parameters. An input signal appears in the Project View as an input to
a step, which means you can pass signals as inputs to a VI. A parameter
is a value you can configure on the Step Setup dialog box of a step.
You also can sweep parameters dynamically using the Sweep step. In
this project, the VI has an input signal, Time waveform in, and scalar
parameters, Upper limit and Lower limit.
Verify that the Step Setup dialog box appears as shown in Figure7-1.