Rockwell-automation 1747-PCIS API Software - Open Controller Bedienungsanleitung PDF herunterladen (Seite 73)

Publication 1747-UM002A-US-P - June 2000

Library of Routines 6-13

Return Value:

Considerations:

Supported in the DOS API library and the Windows NT API library

Example:

HANDLE Handle;

int retcode;

/* Use OC_SetForces() to configure forcing information first

retcode = OC_EnableForces( Handle, FORCE_ENABLE );

OC_EnableSlot

OC_EnableSlot enables fine tuning of the I/O scanning process.

Syntax:

int OC_EnableSlot(HANDLE handle, int slotnum, int

state);

Parameters:

Name: Value: Description:

SUCCESS 0 forces were updated successfully

ERR_OCACCESS 2

handle does not have access to scanner

ERR_OCNOFORCES 15 no forces installed, scanner cannot enable forces

ERR_OCPARAM 8 parameter contains invalid value

ERR_OCRESPONSE 10 scanner did not respond to request

ERR_OCSCANCFG 14 scanner has not been configured

Parameter: Description:

handle Must be a valid handle returned from OC_OpenScanner

slotnum Must contain a valid slot number.

state If

state is:

SLOT_ENABLE the module is released from its reset state and

is included in the I/O scan

SLOT_DISABLE the module is no longer included in the I/O scan

and any outputs remain at their last state

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Rockwell-automation 1747-PCIS API Software - Open Controller Bedienungsanleitung Seite 73