-p

-p value        

Specifies the number of pages to acquire.  Default is 0 (acquire all pages).  If the device is equipped with a document feeder, only value pages will be acquired.

Example:

DTWAIN_TwainSave("-F tif3 -f mytif.tif -p 3");

The images are saved to a Group 3 TIFF file called mytif.tif.  Only 3 pages are acquired.

Default Setting:

The device will acquire all the pages.