Table Of Contents

Write Named Waveform (Write Named Waveform (Direct DMA)) (G Dataflow)

Version:
Last Modified: September 27, 2017

Writes a specified amount of data from a Direct DMA-compatible device to the waveform in onboard memory.

The sample size of the data you write is shown by the following table.

Device Sample Size in Bytes
PXI-6541/6542 4
PXI-6544/6545 4
PXIe-6547/6548 4 in SDR mode; 2 in DDR mode
PXI/PXIe-655x 4
PXIe-656x 2 in SDR mode; 1 in DDR mode
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waveform name

The name you want to associate with the allocated waveform memory.

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session in

Instrument session obtained from the Initialize Acquisition Session node, the Initialize Generation Session node, or the Initialize External Calibration node.

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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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samples to write

The number of samples to write from the Direct DMA-compatible data source.

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window address

The window address from the Direct DMA-compatible data source.

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session out

Handle that identifies the session in all subsequent node calls.

The session out parameter is obtained from the Initialize Acquisition Session node or the Initialize Generation Session node.

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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.

Where This Node Can Run:

Desktop OS: Windows

FPGA: Not supported

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


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