National Instruments Welding System 321645c-01 사용자 설명서
Chapter 2
Function Reference — DIG_Block_In
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National Instruments Corporation
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NI-DAQ FRM for PC Compatibles
you must use the value of alignIndex return by
Align_DMA_Buffer
to access your data. In
other words, data in an aligned buffer begins at buffer[alignIndex]. Data in an unaligned
buffer begins at buffer [0].
buffer begins at buffer [0].
Note
DIG_Block_In
will not work with groups of size = 1, because of a DMA limitation
when using the AT-DIO-32F.
Note
If you are using an SCXI-1200 with remote SCXI, count is limited by the amount
of memory made available on the remote SCXI unit. For digital buffered input,
you are limited to 5,000 bytes of data. The upper bound for count depends on the
groupSize set in
of memory made available on the remote SCXI unit. For digital buffered input,
you are limited to 5,000 bytes of data. The upper bound for count depends on the
groupSize set in
DIG_SCAN_Setup
(for example, if groupSize = 2, count
≤
2,500).