DAQmxExportSignal
int32 DAQmxExportSignal (TaskHandle taskHandle, int32 signalID, const char outputTerminal[]);
Purpose
Routes a control signal to the specified terminal. The output terminal can reside on the device that generates the control signal or on a different device. Use this function to share clocks and triggers between multiple tasks and devices. The routes created by this function are task-based routes.
Parameters
|
Input
|
| Name |
Type |
Description |
|
taskHandle
|
TaskHandle |
The task used in this function. |
|
signalID
|
int32 |
The name of the trigger, clock, or event to export.
| Value |
|
Description |
|
DAQmx_Val_AIConvertClock
|
|
Clock that causes an analog-to-digital conversion on an E Series or M Series device. One conversion corresponds to a single sample from one channel. |
|
DAQmx_Val_10MHzRefClock
|
|
Output of an oscillator that you can use to synchronize multiple devices. |
|
DAQmx_Val_20MHzTimebaseClock
|
|
Output of an oscillator that is the onboard source of the Master Timebase. Other timebases are derived from this clock. |
|
DAQmx_Val_SampleClock
|
|
Clock the device uses to time each sample. |
|
DAQmx_Val_AdvanceTrigger
|
|
Trigger that moves a switch to the next entry in a scan list. |
|
DAQmx_Val_ReferenceTrigger
|
|
Trigger that establishes the reference point between pretrigger and posttrigger samples. |
|
DAQmx_Val_StartTrigger
|
|
Trigger that begins a measurement or generation. |
|
DAQmx_Val_AdvCmpltEvent
|
|
Signal that a switch product generates after it both executes the command(s) in a scan list entry and waits for the settling time to elapse. |
|
DAQmx_Val_AIHoldCmpltEvent
|
|
Signal that an E Series or M Series device generates when the device latches analog input data (the ADC enters "hold" mode) and it is safe for any external switching hardware to remove the signal and replace it with the next signal. This event does not indicate the completion of the actual analog-to-digital conversion. |
|
DAQmx_Val_CounterOutputEvent
|
|
Signal that a counter generates. Each time the counter reaches terminal count, this signal toggles or pulses. |
|
DAQmx_Val_ChangeDetectionEvent
|
|
Signal that a static DIO device generates when the device detects a rising or falling edge on any of the lines or ports you selected when you configured change detection timing. |
|
DAQmx_Val_WDTExpiredEvent
|
|
Signal that a static DIO device generates when the watchdog timer expires. |
|
|
outputTerminal
|
const char []
|
The destination terminal of the exported signal. |
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. |