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FIFO Property (Clock-Driven Logic)

Last Modified: August 28, 2017

Gets various properties associated with the selected FIFO.

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FIFO Reader and Writer in

A reference to the FIFO whose properties will be accessed.

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FIFO Reader and Writer out

A reference to the FIFO.

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error in

Error conditions that occur before this node runs.

The node responds to this input according to standard error behavior.

Standard Error Behavior

Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.

error in does not contain an error error in contains an error
If no error occurred before the node runs, the node begins execution normally.

If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.

If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.

Default: No error

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error out

Error information.

The node produces this output according to standard error behavior.

Standard Error Behavior

Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.

error in does not contain an error error in contains an error
If no error occurred before the node runs, the node begins execution normally.

If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.

If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.
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used elements

The number of elements currently stored in the FIFO.

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full threshold met?

A Boolean that returns True when the number of elements available for read operations is >= to the 'full threshold' of this FIFO.

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free elements

The number of unused elements contained in this FIFO.

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empty threshold met?

A Boolean that returns True when the number of elements available for write operations is >= to the 'empty threshold' of this FIFO.

Where This Node Can Run:

Desktop OS: none

FPGA: All devices

Web Server: Not supported in VIs that run in a web application


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