Prosoft-technology MVI69-ADM Manual de usuario descargar pdf (Pagina 294)

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CIP Messaging Library Functions MVI-ADM ♦ 'C' Programmable

Developer's Guide 'C' Programmable Application Development Module

Page 294 of 342 ProSoft Technology, Inc.

February 20, 2013

MVIcip_SetUserLED

Syntax

int MVIcip_SetUserLED(MVIHANDLE handle, int lednum, int ledstate);

Parameters

handle

handle returned by previous call to MVIcip_Open

lednum

specifies which of the user LED indicators is being addressed

ledstate

specifies state for LED indicator

Description

MVIcip_SetUserLED allows an application to turn the user LED indicators on and

off.

handle must be a valid handle returned from MVIcip_Open.

lednum must be set to MVI_LED_USER1 or MVI_LED_USER2 to select User

LED 1 or User LED 2, respectively.

ledstate must be set to MVI_LED_STATE_ON or MVI_LED_STATE_OFF to turn

the indicator On or Off, respectively.

Return Value

MVI_SUCCESS

the input scan has occurred.

MVI_ERR_NOACCESS

handle does not have access

MVI_ERR_BADPARAM

lednum or ledstate is invalid.

Example

MVIHANDLE Handle;

/* Turn User LED 1 on and User LED 2 off */

MVIcip_SetUserLED(Handle, MVI_LED_USER1, MVI_LED_STATE_ON);

MVIcip_SetUserLED(Handle, MVI_LED_USER2, MVI_LED_STATE_OFF);

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