What is state diagram LabVIEW?
What is state diagram LabVIEW?
The LabVIEW State Diagram Toolkit provides a diagram editor and code generator for state machine VIs. The LabVIEW State Diagram Toolkit is a software add-on that provides a framework that you can use to build state machines in LabVIEW for large-scale application development.
What LabVIEW structures typically make up a state machine?
A State Machine in LabView has these basic components: i) While Loop, ii) Case Structure inside the While Loop, iii) at least one Shift Register. A State Machine is typically configured with an Enumerated control or “Enum”.
What is the state of this VI?
United States Virgin Islands
| Virgin Islands of the United States | |
|---|---|
| Calling code | +1–340 |
| USPS abbreviation | VI |
| Trad. abbreviation | U.S.V.I. |
| ISO 3166 code | VI US-VI |
How do I know if Vi is running in LabVIEW?
To determine the status, check the Execution State of the VI in the following way:
- Place an Open VI Reference function from the Applications Control Palette.
- Right-click the VI Path input of the Open VI Reference and select Create»Control or Create»Constant.
- Place a Property Node from the Applications Control Palette.
What is event structure in 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.
How does a state machine work?
A state machine has some internal state that can be changed in response to an external event. When a state machine receives an event from the external environment, it changes its state to a new state in accordance with a simple rule. It may also perform an action with significance to the external environment.
What is a state machine used for?
State Machines are used in applications where distinguishable states exist. Each state can lead to one or multiple states and can also end the process flow. A State Machine relies on user input or in-state calculation to determine which state to go to next.
How to create a state machine in LabVIEW?
LabVIEW provides a template of this architecture for you to build your state machine. Read through State Machine overview documentation to learn about state machines in LabVIEW, common terminology, and what steps to complete before creating a state machine.
How to change the simple state machine template?
From the Create Project dialog, launch the Simple State Machine template. In the Project Explorer window, open and run Main.vi. Click the front panel controls to display different pop-up dialog boxes. (Optional) Observe behavior on the block diagram by turning on Highlight Execution.
How to change the name of a state in LabVIEW?
LabVIEW will launch the Control Editor window. Right-click the enum and select Add new item after (or before) and enter the name of the new state. Click outside the control to add the name to the list of states. Select File » Apply Changes.
When does LabVIEW transition to the wait for event state?
After initialization, the state machine transitions to the Wait for Event state. This state contains an Event structure that waits for front panel changes. When a user clicks a button, LabVIEW recognizes the event and switches to the appropriate subdiagram of the Event structure. This subdiagram initiates a transition to the appropriate state.