Rockwell Automation 1747-PCINT API Software for 1746 I/O - Manual (Page 125)

OC_SetOutputUpdate Mode Library of Routines 6–71
Publication 1747-6.5.3 June 1998
Return Value:
Considerations:
Supported in the DOS API library and the Windows NT API library
Example:
HANDLE Handle;
int retcode;
retcode = OC_SetOutputUpdateMode( Handle, OUTUPD_NEVER );
/* Must use OC_DemandOutputScan() function to send new output data */
Name: Value: Description:
SUCCESS 0 conditional scan was set successfully
ERR_OCACCESS 2
handle does not have access to the scanner
ERR_OCINIT 5 scanner has not been initialized, see OC_InitScanner
ERR_OCPARAM
8
parameter contains invalid value