User`s manual

Application Hints 59

PCIS-DASK

Digital Input Programming Hints

Non-double-buffered Asynchronous Continuous Digital

Input

This section describes the function flow typical of non-double-buff-

ered asynchronous digital input operation. While performing con-

tinuous DI operation, the DI configuration function has to be called

at the beginning of the application. For asynchronous DI opera-

tion, the SyncMode argument in continuous DI functions has to be

set to ASYNCH_OP.

DI_XXXX_Config

(XXXX = card type)

DI_ContReadPort /

DI_ContReadPortToFile

With SyncMode = SYNCH_OP

Operation

completed?

YES

DI_AsyncCheck