Rockwell Automation 1747-PCINT API Software for 1746 I/O - Manual (Page 116)

6–62 Library of Routines OC_ReadSRAM
Publication 1747-6.5.3 June 1998
Example:
Byte buf[100]; /*buffer of 100 bytes of important data*/
HANDLE handle;
Word crc, crc_saved;
/* Read 100 bytes of data from offset 0 in SRAM */
OC_ReadSRAM(handle, buf, 0, 100);
/* Calculate CRC */
OC_CalculateCRC(buf, 100, &crc);
/* Read saved CRC at offset 100 in SRAM */
OC_ReadSRAM(handle, &crc_saved, 100, 2);
/* Check CRC */
if (crc != saved_crc)
printf(“ERROR: Data is corrupted.\n”);