Rockwell-automation 1747-PCIS API Software - Open Controller Uživatelský manuál stáhnout pdf (Strana 109)

Publication 1747-UM002A-US-P - June 2000

Library of Routines 6-49

OC_ReadIOConfigFile

OC_ReadIOConfigFile reads the configuration data that is already

stored in the DOS file created using OC_WriteIOConfigFile.

Syntax:

int OC_ReadIOConfigFile(OCIOCFG *iocfg, char *

filename);

Parameters:

Description:

If G file data is included in the configuration file,

OC_ReadIOConfigFile allocates memory for the data and initializes the

G data values to point to the allocated memory. The host application

should release the allocated memory via the

free() function when it

is no longer needed.

Return Value:

Considerations:

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

Example:

OCIOCFG iocfg;

int retcode;

/* DOS file named RACK1.CFG, is storing the rack configuration

info. */

retcode = OC_ReadIOConfigFile( &iocfg, ”RACK1.CFG” );

/* Use OC_DownloadIOConfiguration() to download the

information */

Parameter: Description:

iocfg A structure that contains a copy of the configuration data that is in

filename

filename References a file that was created using OC_WriteIOConfigFile

Name: Value: Description:

SUCCESS 0 I/O configuration file was read successfully

ERR_OCFILERROR 19 error encountered while opening or reading the file

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Rockwell-automation 1747-PCIS API Software - Open Controller Uživatelský manuál Strana 109