ProSoft Technology MVI69-ADM - Manual (Page 307)

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 14 ASCII Display
MVISC_PLCTYPE_D 15 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);