User`s manual

16 Function Classes
PCIS-DASK
Digital Input Function Group
Asynchronous Digital Input Monitoring Functions
DI_AsyncCheck Checks the current status of the asyn-
chronous digital input operation.
DI_AsyncClear Stops the asynchronous digital input
operation.
DI_AsyncDblBufferMode Enables or disables double buffer data
acquisition mode.
DI_AsyncDblBufferHalfReady
Checks whether the next half buffer of
data in circular buffer is ready for trans-
fer during an asynchronous double-buff-
ered digital input operation.
DI_AsyncDblBufferTransfer
Copies half of the data of circular buffer
to user buffer. You can execute this
function repeatedly to return sequential
half buffers of the data.
DI_AsyncMultiBufferNextReady
Checks whether the next buffer of data
in circular buffer is ready for transfer dur-
ing an asynchronous multi-buffered digi-
tal input operation.
DI_AsyncDblBufferOverrunChecks or clears overrun status of the
double-buffered digital input operation.