Rockwell Automation 1747-PCIS API Software - Open Controller - Manual (Page 119)

Publication 1747-UM002A-US-P - June 2000
Library of Routines 6-59
OC_SetIOIdleState OC_SetIOIdleState controls the state of I/O when the scanner goes
from Scan mode to Idle mode.
Syntax:
int OC_SetIOIdleState(HANDLE handle, int mode);
Parameters:
Description:
The I/O will always be reset in the case of a fault.
Return Value:
Considerations:
Supported in the DOS API library and the Windows NT API library
Example:
HANDLE Handle;
int retcode;
retcode = OC_SetIOIdleState( Handle, IDLESTATE_HOLD );
/* Outputs will remain in last state when scanner goes to idle
mode */
Parameter: Description:
handle Must be a valid handle returned from OC_OpenScanner
mode If mode is:
IDLESTATE_HOLD module I/O’s maintain their last state.
IDLESTATE_RESET module I/O’s are reset by the scanner.
The default I/O idle state is IDLESTATE_RESET.
Name: Value: Description:
SUCCESS 0 I/O state was changed successfully
ERR_OCACCESS 2
handle
does not have access to scanner
ERR_OCINIT 5 scanner has not been initialized; see OC_InitScanner
ERR_OCPARAM 8 parameter contains invalid value