Rockwell Automation 1747-PCIS API Software - Open Controller - Manual (Page 38)

Publication 1747-UM002A-US-P - June 2000
3-6 Developing Applications
/*=======================================================================
= INCLUDE FILES =
=========================================================================*/
#include ”ocapi.h”
#include
#include
#include
#include
#include
/*=======================================================================
= MODULE WIDE GLOBAL VARIABLES =
=========================================================================*/
HANDLE
Handle; /* Software ID to scanner device */
OCIOCFG OCcfg; /* Chassis I/O config. data structure */
/*=======================================================================
= FUNCTION PROTOTYPES =
=========================================================================*/
void Ioexit( int );
/*=======================================================================
= MAIN PROGRAM =
=========================================================================*/
void main()
{
int retcode; /* Return code from API calls */
int i;
int slots;
int input_slot, input_found = 0;
int output_slot, output_found = 0;
OCINIT ocpart;
BYTE status;
OCVERSIONINFO verinfo;
BYTE swpos;
WORD wData;
/*
** Open the scanner
*/
retcode = OC_OpenScanner( &Handle, 0, 0);
if ( retcode != SUCCESS )
{
printf( ”\nERROR: OC_OpenScanner failed: %d\n”, retcode );
Ioexit( 1 );
}
Access the
scanner.