What is Event structure analysis?

Event structure analysis is a computer-assisted method for defining the logical relations among events, focusing on how each event enables and expands other events (Heise 1991).

Can structure procedures handle events?

If you want to handle shared events or events from a structure, you must use AddHandler . In the following example, an event handler is associated with an event, and the event is raised.

What is an event case LabVIEW?

The Event structure has one or more subdiagrams, or event cases, exactly one of which executes when the structure executes to handle an event. This structure can time out while waiting for notification of an event. You must place the Event structure in a While loop to handle multiple events.

What Are Case structures in LabVIEW?

Video: Using Case Structures in LabVIEW A Case structure has two or more subdiagrams, or cases. Only one subdiagram is visible at a time, and the structure executes only one case at a time. An input value determines which subdiagram executes.

What is Tunnelling in LabVIEW?

When passing data values into or out of a loop structure, we must create “Tunnels” where the data values enter and exit the structure. Tunnels are indicated on structure borders by a solid square or square with brackets (depending on Auto Indexing) as indicated in Figure 1.

Which method can be used to handle an event just only one time?

Using once() Sometimes you want your application to respond to an event (or type of event) only one time (i.e., the first time the event occurs). To do this, Node provides the once() method. It is used just like the addListener() and on() methods, but allows for responding to the event only once.

What is an event procedure?

The code that performs actions in response to events is written in event procedures. Each event procedure contains the statements that execute when a particular event occurs on a particular object.

What is case structure LabVIEW?

A Case structure has two or more subdiagrams, or cases. Only one subdiagram is visible at a time, and the structure executes only one case at a time. An input value determines which subdiagram executes. If the data type of the selector terminal is Boolean, the structure has a True case and a False case.

How to use event structures in LabVIEW example?

Here is a simple example of using an event structure in Labview to control an on screen LED. The LED can be controlled via two switches, each time the LED is… AboutPressCopyrightContact usCreatorsAdvertiseDevelopersTermsPrivacyPolicy & SafetyHow YouTube worksTest new features

How to use event driven programming in LabVIEW-NI?

In LabVIEW, select the Help menu >> Find Examples >> Browse according to Directory Structure >> Select the Structures folder >> Event Structure >> choose an example. You can also search NI Community for Example Code using Event Structures. Was this information helpful?

How does the event filter node work in LabVIEW?

The Event Filter Node identifies the event data you can modify before the user interface can process that data. This node appears in Event structure cases that handle filter events. If you want to change event data, you can wire and modify data items from the Event Data Node to the Event Filter Node.

How does the event structure monitor for events?

You also can use dynamic registration to change which VIs or controls generate events and to handle events in a subVI rather than the VI where LabVIEW generates events. LabVIEW automatically performs static registration when you run a VI that contains an Event structure.