Rockwell-automation 1747-PCINT API Software for 1746 I/O Manual de usuario descargar pdf (Pagina 36)

3–10 Developing Applications

Publication 1747-6.5.3 June 1998

** Read first Input word

retcode = OC_ReadInputImage( Handle, NULL, input_slot, 0, 1, &wData );

if ( retcode != SUCCESS )

{

printf( ”\nERROR: OC_ReadInputImage failed: %d\n”, retcode );

Ioexit( 1 );

}

printf( ”\n\n First input image data word --> 0x%04x \n”, wData );

delay( 3000 );

** Write to the first Output word

printf( ”\n\n Incrementing first discrete output word. \n” );

for ( wData=0; wData < 256; wData++)

{

retcode = OC_WriteOutputImage( Handle, NULL, output_slot, 0, 1, &wData );

if ( retcode != SUCCESS )

{

printf(”\nERROR: OC_WriteOutputImage failed: %d\n”, retcode);

Ioexit(1);

}

delay ( 10 );

}

** Must always close the scanner before exiting

OC_CloseScanner( Handle );

printf( ”\n\n Program is done! \n\n” );

} /* end main() */

Scan I/O

See page

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6-90.

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Rockwell-automation 1747-PCINT API Software for 1746 I/O Manual de usuario Pagina 36