Return value: considerations, Example – Rockwell Automation 1747-PCIS API Software - Open Controller User Manual

Page 141

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Publication 1747-UM002A-US-P - June 2000

Library of Routines 6-81

Return Value:

Considerations:

Supported in the Windows NT API library only.

Example:

Byte

buf[100];/*buffer of important data*/

Word crc;

HANDLE handle;

/* Save 100 bytes of data to offset 0 in SRAM */

OC_WriteSRAM(handle, buf, 0, 100);

/* Calculate CRC */

OC_CalculateCRC(buf, 100, &crc);

/* Write data CRC to offset 100 in SRAM */

OC_WriteSRAM(handle, &crc, 100, 2);

Name:

Description:

SUCCESS

data was written successfully

ERR_OCACCESS

handle

does not have access to scanner

ERR_OCPARAM

offset+length

points past the end of the memory

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