Table Of Contents

IviPwrMeter Get Channel Name (G Dataflow)

Last Modified: October 24, 2017

Returns the physical channel identifier that corresponds to the one-based index specified by the ChannelIndex parameter.

spd-note-note
Note  

If you pass in a value for the ChannelIndex parameter that is less than one or greater than the value of the Channel Count property, the node returns an empty string in the ChannelName parameter and returns an error.

spd-note-tip
Tip  

By passing 0 for the buffer size, you can ascertain the buffer size required to get the entire channel name string and then call the node again with a sufficiently large buffer.

connector_pane_image
datatype_icon

instrument handle

Instrument handle that you obtain from IviPwrMeter Initialize or IviPwrMeter Initialize With Options. The handle identifies a particular instrument session.

Default: None

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

index (1)

A 1-based index into the channel table. Valid Range: 1 to number of channels. Default Value: 1

datatype_icon

instrument handle out

Instrument handle that you obtain from IviPwrMeter Initialize or IviPwrMeter Initialize With Options. The handle identifies a particular instrument session.

Default: None

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.
datatype_icon

channel name

Returns the highest-level channel name that corresponds to the specific driver channel string that is in the channel table at an index you specify.

Where This Node Can Run:

Desktop OS: Windows

FPGA: Not supported

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


Recently Viewed Topics