Rockwell-automation 1747-PCIS API Software - Open Controller Manual do Utilizador descarregar pdf (Página 43)

Publication 1747-UM002A-US-P - June 2000

Developing Applications 3-11

OC_ExtendedErrorMsg(Handle, &exterr, &msg);

printf(”\nERROR: %s\n”, msg);

}

OC_CloseScanner(Handle);

exit(retcode);

} /* end Ioexit() */

Programming Example for

Windows NT

The following Windows NT example (sample.c on your Windows

NT API disk) shows how to program the above steps. Callouts on the

right margin identify the code for each step.

/********************************************************************

* Title: Simple application sample code for 1746 I/O PCI Interface API

* Abstract:

* This file contains a simple application using the PCI

* bus interface API.

* Environment:

* 1747-PCIS 1746 I/O PCI Interface

* Microsoft Windows NT 4.0

* Microsoft Visual C++ / Borland C++

* (c)Copyright Allen-Bradley *

************************************************************************/

/*=======================================================================

= INCLUDE FILES =

=======================================================================*/

#include <windows.h>

#include <process.h>

#include <stdio.h>

#include <stdlib.h>

#include <time.h>

#include <conio.h>

#include <string.h>

#include "ocapi.h"

/*=======================================================================

= MODULE WIDE GLOBAL VARIABLES =

=======================================================================*/

HANDLE OChandle;

OCIOCFG OCcfg;

/************************************************************************

* Entry point:

* Ioexit

* Description:

* Common error handling routine. This routine displays any

* extended error and exits the program.

* Arguments:

* rc : int ( input )

* This error code is passed to the exit() routine.

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