Use the RT FIFO functions to send and receive data deterministically between VIs. RT FIFO functions provide a deterministic data transfer method that does not add jitter to a time-critical VI. An RT FIFO is a lossy form of communication that overwrites the oldest data element when the FIFO is full.

The functions on this palette can return general LabVIEW error codes or specific RT FIFO error codes.

Note If you use a Real-Time FIFO to transfer waveform data, the variant element of the waveform does not transfer because variants are variable-sized and therefore incompatible with the Real-Time FIFO.


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Examples

Refer to the following example files included with LabVIEW Real-Time Module.

  • labview\examples\Real-Time Module\RT Communication\RT FIFO\RT FIFO Communication.lvproj