![]() A subVI icon has a white background on its icon. You cannot access the connector pane from the icon in the block diagram window. Access the connector pane by right-clicking the icon in the upper right corner of the front panel window. The connector pane is a set of terminals on the icon that corresponds to the controls and indicators of that VI, similar to the parameter list of a function call in text-based programming languages. ![]() To use a VI as a subVI, you need to build a connector pane as shown above. Instrument I/O > Serial and place VISA Configure Serial Port, VISA Write, VISA Read, VISA Close on the block diagram. The default icon contains a number that indicates how many new VIs you opened after launching LabVIEW. As long as that device is powered on, there is no problem. Here are the details: I have a device that allows me to have remote 'serial ports', (actually connected over ethernet). If you use a VI as a subVI, the icon identifies the subVI on the block diagram of the VI. I'm having an issue with the Visa Configure Serial Port VI hanging my porgram. The icon can contain both text and images. Before you can write or read data, both the VISA-Serial object and the instrument must have identical communication settings. An icon is a graphical representation of a VI. An example of the default icon is shown here. It is also useful for modifying port parameters as well as controlling and monitoring serial interfaces. It is a self-developed program that gives the user a tool to setup and configure serial ports. Every VI displays an icon in the upper right corner of the front panel window and block diagram window. This utility allows users to connect to a serial port from the network.
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