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Using IVI with PAWS

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hr = pDMMData->Initiate();

if (FAILED(hr))

{

Display("\033[30;41m Bad return from Initiate()

method\033[m\n");

}

10 To set the reading timeout to 1 second, select the DMM.cpp file from the PAWS

Project window.

11 In the DMM_Fetch() interface function, insert the following code below the line

Please insert your CEM driver code here:

double Data = 0;

DATUM *fdat;

hr = pDMMData->Fetch(1000, &Data);

if (FAILED(hr))

{

Display("\033[30;41m Bad return from Fetch(1000,

&Data) method\033[m\n");

}

fdat = FthDat();

DECDatVal(fdat, 0) = Data;

FthCnt(1);

Note:

The first argument in the

Fetch

method specifies how long to wait in the

Fetch

operation since it is possible that no data is available or the trigger event did

not occur. The second parameter contains the actual reading or a value indicating

that an over-range condition occurred.

12 To conserve resources, you should close the driver session. From the PAWS

Project window, select the ctrl.cpp file.

13 In the doUnload() interface function, insert the following code below the line //

Please insert your CEM driver code here:

hr = driver->Close();

if (FAILED(hr))

{

Display("\033[30;41m Bad return from Close()

method\033[m\n");

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HP Drive Bedienungsanleitung Seite 81