DAQmx, specify the resources occpaied

I use a function to get the status of digital DAQ card port. DAQmxErrChk (DAQmxReadDigitalU32 (Handle, 1, 10.0, DAQmx_Val_GroupByChannel, & SSR, 1, & read, NULL)); all of the code as follows: error = Init_DA_Brds (1, & BoardCode); DAQmxErrChk (DAQmxResetDevice ("DAQmxDev1")); DAQmxErrChk (DAQmxCreateTask ("", & handle)); DAQmxErrChk (DAQmxCreateDIChan (Handle, "Line6-port0/DAQmxDev1", "", DAQmx_Val_ChanForAllLines)); DAQmxErrChk (DAQmxReadDigitalU32 (Handle, 1, 10.0, DAQmx_Val_GroupByChannel, & SSR, 1, & read, NULL)); DAQmxErrChk (DAQmxClearTask (Handle)); However, some times I get error this DAQ resource has been occpaid. later if I try to reset in Max, also an error report, whatever i reset driver DAQ traditional according to the instruction. do anyone know of this problem? (I'm with CVI 7.1 + DAQmx 9.0.2) B.R Gerry

I found the reason.  put on another also read the digital line in order to have the flag.  It seems DAQmx does not support this one as well.  because my previous version was made by the traditional pilot, and I see no problem.

in any case, thanks for all the peoples attention!

B.R

Gerry

Tags: NI Software

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