DAQmxStartTask
int32 DAQmxStartTask (TaskHandle taskHandle);
Purpose
Transitions the task from the committed state to the running state, which begins measurement or generation. Using this function is required for some applications and optional for others.
If you do not use this function, a measurement task starts automatically when a read operation begins. The autoStart parameter of the NI-DAQmx Write functions determines if a generation task starts automatically when you use an NI-DAQmx Write function.
If you do not call DAQmxStartTask and DAQmxStopTask when you call NI-DAQmx Read functions or NI-DAQmx Write functions multiple times, such as in a loop, the task starts and stops repeatedly. Starting and stopping a task repeatedly reduces the performance of the application.
Parameters
| Input | ||
| Name | Type | Description |
|---|---|---|
| taskHandle | TaskHandle | The task to start. |
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. |