Run Time User Activity Logging

Hi,

You can develop two project functions which you can call at IO field Input Value Cange event.
First one will write the value change into log file. As example:
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BOOL LogToFile(char* lpszFileName, char* lpszLogText)
{
BOOLbDebug = FALSE;
#define LOG_FOLDER"logs"
#define LOG_DIVIDER"\t"// devider for log files
#define LOG_EXTENTION"log"// file extention for log files
BOOLbRes = FALSE;
FILE*fp = NULL;
charszPath[_MAX_PATH + 1];
charszPathEx[_MAX_PATH + 1];
charszFileNameEx[_MAX_PATH + 1];
SYSTEMTIME stLocalTime;
charszDivider[10];

memset(&stLocalTime, 0, sizeof(stLocalTime));
memset(szPath, 0, sizeof(szPath));

// get the local time
GetLocalTime(&stLocalTime);

bRes = ProjectPathGet(szPath);

// set the path to the log file
sprintf(szPath, "%s\\%s", szPath, LOG_FOLDER);
if(bDebug) printf("LogToFile: logs path %s\r\n", szPath);

// st the log file name with extention
sprintf(szFileNameEx, "%s.%s", lpszFileName, LOG_EXTENTION);
if(bDebug) printf("LogToFile: logs path etended %s\r\n", szPathEx);

// add file name to the path
sprintf(szPathEx, "%s\\%s", szPath, szFileNameEx);
if(bDebug) printf("LogToFile: logs path etended %s\r\n", szPathEx);

strcpy(szDivider, LOG_DIVIDER);
if((fp = fopen(szPathEx, "a")) != NULL)
{
// create the name of the file
fprintf(fp, "%02d-%02d-%04d %02d:%02d:%02d%s%s\n",
stLocalTime.wDay, stLocalTime.wMonth, stLocalTime.wYear,
stLocalTime.wHour, stLocalTime.wMinute, stLocalTime.wSecond,
szDivider,
lpszLogText);

// go to new line
//fprintf(fp, "\n");

// at the end close the file
if(fclose(fp) != 0)
{
printf("LogToFile: ERROR AT CLOSING THE FILE %s\r\n", szFileNameEx);
bRes = FALSE;
}
else
{
if(bDebug) printf("LogToFile: successfuly closed the file %s\r\n", szFileNameEx);
bRes = TRUE;
}
}
else
{
printf("LogToFile: ERROR AT OPENNING THE FILE %s\r\n", szFileNameEx);
bRes = FALSE;
}

return bRes;
}
================================
Modify it accordingly to your needs.

The second function can log the event (value change) to Alarm Logging. Here we have two approaches.
First one to use Process Values in alarm message. You have to fill the old and new value of tag in process tags, wait for two seconds (Sleep function) to make sure that Alarm Logging was updated the Process Tags, and then trigger the alarm message.
The second (best for me)is to create alarm message by means of ODK function
bOkay = MSRTCreateMsgInstance (dwServiceID, &MsgCreate, &Error);
Here the addvantage is that you don't need to wait for updating of Process Values because you can fill them (they are members in MSG_RTDATA_INSTANCE_STRUCTstructure)
I hope this will help you.

Best regards
Svetozar Yolov