Rockwell Automation 1747-PCINT API Software for 1746 I/O - Manual (Page 107)

OC_ReadHostRetentive Data Library of Routines 6–53
Publication 1747-6.5.3 June 1998
Example:
HANDLE Handle;
BYTE retent_data[500];
int retcode;
retcode = OC_ReadHostRetentiveData( Handle, retent_data, 0, 500 );