Chapter 3 Working with Projects
Getting Started with LabVIEW SignalExpress 3-8 ni.com
11. Select File»Save Project As and save the project as My First
Project.seproj in the SignalExpress\Examples\Tutorial
directory.
12. Select File»Close Project to close the project.
Moving and Deleting Steps
The steps in SignalExpress projects depend on input data, which means
steps can operate only on signals exported from previous steps in the
Project View. When you click the Input signal pull-down menu on the
Input tab of the Step Setup dialog box of a step, the menu displays only
compatible signals exported from a previous step. When the output of a
step becomes the input of another step, the steps become dependent on each
other, and the two steps execute sequentially at the same rate. The first step
generates an output signal that the second step must receive as an input
before the step can execute.
You can move a step within a project by dragging it up or down in the
Project View. You can delete a step by right-clicking it in the Project View
and selecting Delete from the shortcut menu. However, when you move or
delete a step, the status of signals in the project changes. For example, if
you delete a step that generates output signals, the operation of the project
breaks if any of the deleted output signals are inputs for other steps, and an
error indicator appears in the Project View. You also can cut, copy, and
paste steps within a project by pressing the <Ctrl-X>, <Ctrl-C>, and
<Ctrl-V> keys, respectively, or by right-clicking a step in the Project View
and selecting Cut, Copy, Paste Before Selected Step, or Paste After
Selected Step from the shortcut menu.
Handling Errors and Warnings
If an error occurs while a project runs, an error indicator, shown at left,
appears in the Project View on the step that encountered the error.
Double-click the step with the error to display an error description across
the bottom of the Step Setup dialog box. Click the Details button to the
right of the error description to display the full error description.
SignalExpress logs all errors and warnings in the Event Log while a project
runs. To display the Event Log, select
View»Event Log
and click the
Event
Log
tab in the Data View area. Refer to the
LabVIEW SignalExpress Help
for
more information about errors and warnings by selecting
Help»LabVIEW
SignalExpress Help
, clicking the
Search
tab, and entering
errors
.