Logfile.txt - only one entry is written

2020-02-27T14:33:27.006000Z

Comingback4u hat geschrieben:
MWRITE mode is like creating a new file every time. So unless you change the pointer to the end of the file it will constantly erase the data.
Try changing:

dirOpen (sFileName:=GVL.filename_log, eFileMode:=FILE.MODE.MWRITE, xExecute:=TRUE);

To:

dirOpen (sFileName:=GVL.filename_log, eFileMode:=FILE.MODE.MAPPD, xExecute:=TRUE);

Thanks guys!!!This one worked for me

Logfile.txt - only one entry is written

2020-02-27T14:33:26.510000Z

MWRITE mode is like creating a new file every time. So unless you change the pointer to the end of the file it will constantly erase the data.

Try changing:

dirOpen (sFileName:=GVL.filename_log, eFileMode:=FILE.MODE.MWRITE, xExecute:=TRUE);

To:

dirOpen (sFileName:=GVL.filename_log, eFileMode:=FILE.MODE.MAPPD, xExecute:=TRUE);

Logfile.txt - only one entry is written

2020-02-27T14:33:26.043000Z

This may help, especially section "File – internal pointer"
https://help.codesys.com/webapp/Examples;product=CAA_FILE;version=3.5.13.0

Logfile.txt - only one entry is written

2020-02-27T14:33:24.628000Z

Hello,

I'm using Codesys V3.5 SP10 Patch 4 pbF with File Access lib 3.5.7.0 and want to write down my measurement results into a logfile.txt. Creating and writing into the logfile works well. However only the last result is written into the logfile. There is only one entry. What can I do to get all events into my logfile. A statemachine didn't helped. Here is my code:

PROGRAM WRITE_LOG
VAR
   dirOpen   : FILE.Open;
   fileClose  : FILE.Close;
   fileWrite  : FILE.Write;
   dirClose   : FILE.DirClose;
   hFile : CAA.HANDLE;
   hDir : CAA.HANDLE;
   projectpath : CAA.FILENAME;
   filename   : CAA.FILENAME;
   
   str_writestr:STRING;
   
   time_object_get :DTU.GetDateAndTime;
END_VAR

str_writestr:='';
time_object_get(xExecute:=TRUE);
dirOpen (sFileName:=GVL.filename_log, eFileMode:=FILE.MODE.MWRITE, xExecute:=TRUE);
IF NOT time_object_get.xError AND NOT time_object_get.xBusy AND NOT time_object_get.xError THEN
    GVL.logtime:=time_object_get.dtDateAndTime;
   time_object_get(xExecute:=FALSE);
END_IF
IF dirOpen.xDone AND NOT dirOpen.xError THEN
   hFile := dirOpen.hFile;
   str_writestr:=CONCAT(DT_TO_STRING(GVL.logtime),' ');
   str_writestr:=CONCAT(str_writestr,GVL.logstring);
   str_writestr:=CONCAT(str_writestr,'$R$N');  //Maybe this doesn't work properly??? :| 
   fileWrite(hFile:=hFile, pBuffer:=ADR(str_writestr), szSize:=TO_UDINT(StrLen(ADR(str_writestr))), udiTimeOut:=100000, xExecute:=TRUE);
   
IF fileWrite.xDone AND NOT fileWrite.xError AND NOT fileClose.xDone THEN
      fileClose(hFile:=hFile, xExecute := TRUE);
   ELSIF fileClose.xDone THEN
      dirOpen(xExecute:=FALSE);
      fileClose(xExecute:=FALSE);
      fileWrite(xExecute:=FALSE);
   END_IF
END_IF

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