Prosoft-technology MVI56E-LDM Manual do Utilizador descarregar pdf (Página 184)

CIP API Functions ControlLogix Platform ♦ "C" Programmable

Developer's Manual Linux Application Development Module

Page 178 of 264 ProSoft Technology, Inc.

March 12, 2014

OCXcip_GetUserLED

Syntax

int OCXcip_GetUserLED (OCXHANDLE apihandle, int * ledstate);

Parameters

apihandle

handle returned by previous call to OCXcip_Open

ledstate

Pointer to a variable to receive user LED state

Description

OCXcip_GetUserLED allows an application to read the current state of the user

LED.

apiHandle must be a valid handle returned from OCXcip_Open or

OCXcip_ClientOpen.

ledstate must be a pointer to an integer variable. On successful return, the

variable will be set to:

OCX_LED_STATE_RED,

OCX_LED_STATE_GREEN, or

OCX_LED_STATE_OFF

Return Value

OCX_SUCCESS

The LED state was returned successfully

OCX_ERR_NOACCESS

apihandle does not have access

Example

OCXHANDLE apihandle;

int ledstate;

/* Read user LED state */

OCXcip_GetUserLED (Handle, &ledstate);

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Prosoft-technology MVI56E-LDM Manual do Utilizador Página 184