Table Of Contents

IMAQdx Grab (G Dataflow)

Last Modified: March 25, 2019

Acquires the most current frame into image out.

Call this node only after calling the IMAQdx Configure Grab node. If the image type does not match the video format of the camera, this node changes the image type to a suitable format.

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session in

Unique reference to the camera, which you can obtain with the IMAQdx Initialize 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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image in

Reference to the image that receives the captured pixel data.

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wait for next buffer

Driver will wait for the next available buffer if the value is Yes. If the value is No, the driver will not wait for the next available buffer, and will instead return the last acquired buffer.

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timeout

Time, in milliseconds, to wait for the requested image to become available.

A value of -1 indicates to wait indefinitely. A value of -2 indicates to use the value of the Timeout attribute in place of this parameter.

Default: 5000

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session out

Unique reference to the camera. session out is the same as session in.

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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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image out

Reference to the captured image.

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buffer number

Actual acquired buffer number returned.

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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