Table Of Contents

Get Refnum Information (G Dataflow)

Last Modified: December 18, 2017

Retrieves refnum information from a variant that contains a refnum data type.

This node returns an error if the variant does not contain a refnum.

connector_pane_image
datatype_icon

variant

Variant data from which you want to retrieve data type information.

datatype_icon

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

datatype_icon

reference type

Type of the object that is associated with the refnum stored in the variant. For example, if the variant contains a refnum that points to a VI, this output returns a reference type of LVObjVI.

datatype_icon

strict type

Strict type of the refnum stored in the variant, if the refnum is strictly typed. Otherwise, this output returns an empty string.

datatype_icon

VI server generic type

VI server class name of the object that is associated with the refnum stored in the variant. This output is valid only if reference type is LVObjUnknown.

datatype_icon

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: This product does not support FPGA devices

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


Recently Viewed Topics