DAQmxCreateAOCurrentChan

NI-DAQmx C Functions

DAQmxCreateAOCurrentChan

int32 DAQmxCreateAOCurrentChan (TaskHandle taskHandle, const char physicalChannel[], const char nameToAssignToChannel[], float64 minVal, float64 maxVal, int32 units, const char customScaleName[]);

Purpose

Creates channel(s) to generate current and adds the channel(s) to the task you specify with taskHandle.

Parameters

Input
Name Type Description
taskHandle TaskHandle The task to which to add the channels that this function creates.
physicalChannel const char [] The names of the physical channels to use to create virtual channels. You can specify a list or range of physical channels.
nameToAssignToChannel const char [] The name(s) to assign to the created virtual channel(s). If you do not specify a name, NI-DAQmx uses the physical channel name as the virtual channel name. If you specify your own names for nameToAssignToChannel, you must use the names when you refer to these channels in other NI-DAQmx functions.
If you create multiple virtual channels with one call to this function, you can specify a list of names separated by commas. If you provide fewer names than the number of virtual channels you create, NI-DAQmx automatically assigns names to the virtual channels.
minVal float64 The minimum value, in units, that you expect to generate.
maxVal float64 The maximum value, in units, that you expect to generate.
units int32 The units in which to generate current.
Value Description
DAQmx_Val_Amps amperes
DAQmx_Val_FromCustomScale Units a custom scale specifies. Use customScaleName to specify a custom scale.
customScaleName const char [] The name of a custom scale to apply to the channel. To use this parameter, you must set units to DAQmx_Val_FromCustomScale. If you do not set units to DAQmx_Val_FromCustomScale, you must set customScaleName to NULL.

Return Value

Name Type Description
status int32 The error code returned by the function in the event of an error or warning. A value of 0 indicates success. A positive value indicates a warning. A negative value indicates an error.