Ivi_IOSession
Usage
ViSession = Ivi_IOSession(ViSession vi);
Purpose
This function returns the current value of the IVI_ATTR_IO_SESSION attribute for the session you specify.
Use Ivi_IOSession in the high-level functions in specific instrument drivers. Ivi_IOSession provides fast, convenient access to the IVI_ATTR_IO_SESSION attribute because it does no error checking and does not lock the session.
 | Note Do not call this function unless you have already locked the session. |
Parameters
| Name | Type | Description |
|---|---|---|
| vi | ViSession |
The ViSession handle that you obtain from Ivi_SpecificDriverNew. The handle identifies a particular IVI session. |
Return Value
Returns the value of the IVI_ATTR_IO_SESSION attribute for the session. You use the I/O session handle to communicate with the actual instrument.
If you pass an invalid session handle to the function, this parameter returns VI_NULL.