Prosoft-technology MVI69-ADM Manual de usuario descargar pdf (Pagina 307)

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MVI-ADM ♦ 'C' Programmable Side-Connect API Library Functions

'C' Programmable Application Development Module Developer's Guide

ProSoft Technology, Inc. Page 307 of 342

February 20, 2013

Data Type Definition

Value

Description

MVISC_PLCTYPE_A

ASCII Display

MVISC_PLCTYPE_D

BCD Display

MVISC_PLCTYPE_NOEXIST

9998

File does not exist

MVISC_PLCTYPE_UNKNOWN

9999

Unknown data type

Return Value

MVISC_SUCCESS

No errors were encountered

MVISC_ERR_NOACCESS

handle does not have access

MVISC_ERR_PLCTIMEOUT

PLC-5 did not respond

MVISC_ERR_PCCCFAIL

PCCC error occurred

Example

HANDLE Handle;

MVISCFILEINFO fileinfo;

int rc;

/* Query the PLC to check file number 7. In this example, */

/* file 7 is expected to be an Integer file. If it is not, */

/* a configuration error message is displayed. */

rc = MVIsc_GetPLCFileInfo(Handle, 7, &fileinfo);

if (rc != MVISC_SUCCESS)

printf("ERROR: MVIsc_GetPLCFileInfo failed");

if (fileinfo.filetype != MVISC_PLCTYPE_N)

printf("Configuration Error: File 7 is not Integer or does not exist");

else

printf("File Size is %d elements and %ld words",

fileinfo.num_elements, fileinfo.num_words);

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