Last Valid Frame

Returns the cumulative buffer number (zero-based) of the last acquired image. At the beginning of the acquisition, this value starts at –1 and continuously increments by 1 for each image acquired.

Remarks

The following table shows when the property is readable and writable and what devices it applies to.

Datatype	Readable	Writable	Device
	Always	NotWritable	NI PCI-1405 NI PCI/PXI-1407 NI PCI/PXI-1409 NI PCI-1410 NI PCI/PXI-1411 NI PCI/PXI-1422 NI PCI-1424 NI PCI-1426 NI PCIe-1427 NI PCI/PXI-1428 NI PCIe-1429 NI PCIe-1430 NI 17xx