Creating a VI Server Application

Use the LabVIEW VI Server to programmatically control front panel objects, VIs, and LabVIEW, and to dynamically load, edit, and run VIs on a computer or remotely across a network. You can control browser access to the VIs and configure which VIs remote applications can control.

Complete the following steps to create a VI Server application.

1. Configure the VI Server to allow the TCP/IP protocol.
2. Use the Open Application Reference function to open a reference to a local or remote application instance.
   
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Note  If you have multiple application instances open simultaneously, such as if you are working with a LabVIEW project or targets of a LabVIEW project, multiple VI Servers can be listening on different ports. Open an application reference to a specific application instance by stating the machine name and the port or service name.

3. Use the Open VI Reference function to open a reference to a VI on the local or remote computer that already exists in memory for the application instance, or to dynamically load a VI from disk. However, be aware that if the input to vi path is a file path, this function waits until the user interface is idle to load the VI from disk.
   
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4. Use the Property Node to get or set properties or the Invoke Node to invoke methods.
   • Property Node
     
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   • Invoke Node
     
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   You also can use a Call By Reference node to call a dynamically loaded VI.
   
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5. Use the Close Reference function to close any open references.

Refer to labview\examples\viserver for examples of using the VI Server.

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