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Use the Serial VIs and functions to access the VISA VIs and functions that communicate with devices connected to a serial port. Additional functions are also available on the VISA palette.

Example

The VIs and functions on this palette can return serial error codes.

Palette Object	Description
VISA Bytes at Serial Port	Returns the number of bytes in the input buffer of the specified serial port.
VISA Close	Closes a device session or event object specified by VISA resource name.
VISA Configure Serial Port	Initializes the serial port specified by VISA resource name to the specified settings. The VISA class you wire to the VISA resource name input determines the polymorphic instance to use.
VISA Flush I/O Buffer	Flushes the I/O buffer specified by mask.
VISA Read	Reads the specified number of bytes from the device or interface specified by VISA resource name and returns the data in read buffer.
VISA Serial Break	Sends a break on the specified output port.
VISA Set I/O Buffer Size	Sets the size of the I/O buffer. Run the VISA Configure Serial Port VI first if you are setting the size of a serial port buffer.
VISA Write	Writes the data from write buffer to the device or interface specified by VISA resource name.

Example

Refer to the labview\examples\instr\smplserl.llb for examples of using the Serial VIs and Functions.