Rockwell-automation 1747-PCIS API Software - Open Controller Bedienungsanleitung PDF herunterladen (Seite 62)

Publication 1747-UM002A-US-P - June 2000

6-2 Library of Routines

Example:

BYTE buffer[100];

WORD buffer_crc;

int retcode;

retcode = OC_CalculateCRC( buffer, 100, &buffer_crc );

OC_ClearFault

OC_ClearFault clears any fault condition of the scanner.

Syntax:

int OC_ClearFault(HANDLE handle);

Parameters:

Description:

All extended error information must be retrieved before the fault can

be cleared.

If the scanner encounters an error condition, it generates an extended

error and faults. The fault forces the scanner into Idle mode. The

scanner cannot be placed into Scan mode until the fault is cleared.

Return Value:

Considerations:

Supported in the DOS API library and the Windows NT API library

Example:

HANDLE Handle;

int retcode;

retcode = OC_ClearFault( Handle );

Parameter: Description:

handle Must be a valid handle returned from OC_OpenScanner

Name: Value: Description:

SUCCESS 0 fault was cleared successfully

ERR_OCACCESS 2

handle does not have access to the scanner

ERR_OCEXTERR 11 scanner extended error message, see OC_GetExtendedError

ERR_OCINIT 5 scanner has not been initialized, see OC_InitScanner

ERR_OCRESPONSE 10 scanner did not respond to request

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Rockwell-automation 1747-PCIS API Software - Open Controller Bedienungsanleitung Seite 62