Rockwell-automation 1747-PCIS API Software - Open Controller Instrukcja Użytkownika Pobierz pdf (Strona 120)

Publication 1747-UM002A-US-P - June 2000

6-60 Library of Routines

OC_SetModuleInterrupt

OC_SetModuleInterrupt enables, disables, or acknowledges the

module interrupt for the slot slotnum on the scanner.

Syntax:

int OC_SetModuleInterrupt(HANDLE handle, int

slotnum, int mode);

Parameters:

Description:

When a module interrupt is received, the scanner generates a module

interrupt message that the host application can read by calling the

OC_PollScanner function. After retrieving the module interrupt

message, the host application should immediately acknowledge the

module interrupt and then service the module interrupt message. The

module interrupt must be acknowledged before another can be

received from that module.

Return Value:

Considerations:

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

Parameter: Description:

handle Must be a valid handle returned from OC_OpenScanner

slotnum Must be a valid slot number

mode If

mode is:

IOINT_DISABLE the module interrupt is disabled (default)

IOINT_ENABLE the module interrupt is enabled

IOINT_ACK the module interrupt is acknowledged.

Name: Value: Description:

SUCCESS 0 module interrupt was processed successfully

ERR_OCACCESS 2

handle does not have access to scanner

ERR_OCPARAM 8 parameter contains invalid value

ERR_OCRESPONSE 10 scanner did not respond to request

ERR_OCSCANCFG 14 scanner has not been configured

ERR_OCSLOT 12 slot number is invalid

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Rockwell-automation 1747-PCIS API Software - Open Controller Instrukcja Użytkownika Strona 120