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"Save measurement to file"-VI doesn't obey the "Use next avaible file name" setting

I'm using this express VI to store data. In it's properties, there's the "If a file already exists: Use next avaible file name" radio box which does not work. Instead, it appends everything to the one file it created on the first run.

My VI has a while-loop with an embedded flat sequence with the writing-VI being in the last frame of the flat sequence.

LV 8.5, Linux
0
x9561 (148439)
4/4/2008 10:10:06 AM
comp.lang.labview 35213 articles. 1 followers. vasusachin24 (1) is leader. Post Follow

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Hi There.
Could You make a screendump of Your VI?
I tried using the Express VI on both LV7 Express (Base,Win), and LV8.5 (Base, Win) , and it works perfectly....
 
0
x9561 (148439)
4/4/2008 10:40:10 AM
I've attached my VI. Currently, the save-VI gets it's file name from some other VIs, but I do that because it doesn't work otherwise. When I clear the "Filename"-input, it starts appending.


Messapplikation ganz anders.vi:
http://forums.ni.com/attachments/ni/170/313764/1/Messapplikation ganz anders.vi
0
x9561 (148439)
4/4/2008 11:10:04 AM
Hi ReBoot
I think i've found the Source of Error......When You generate the filepath You use a Concatenate strings with a Constant stating "Files/file" the problem her is the "/". It might be that it should be a Backslash "\"......
Try it....
Best Regards BCL
 
0
x9561 (148439)
4/4/2008 11:40:05 AM
No no, everything's fine as it is. The problem starts when I remove the Filename-input from the Save-VI. Then the Save-VI refuses to take the next avaible file name. However, I'd like to be able to remove all this filename-code and let the Save-VI handle all the file naming.
0
x9561 (148439)
4/4/2008 12:10:05 PM
Hi ReBoot,
how should you filenames look like?
Mike
0
x9561 (148439)
4/4/2008 12:10:05 PM
That doesn't matter as long as they're indexed.
0
x9561 (148439)
4/4/2008 12:10:09 PM
Hi Again.
Unfortunately i cannot run You Vi, because of missing Hardware, But if i Copy the Express VI to a new VI, and run it, it generates a new file everytime.
Try running the attached example.......Do You see the same behavior?
 
/BCL


WriteLVMFile - Example1.vi:
http://forums.ni.com/attachments/ni/170/313781/1/WriteLVMFile - Example1.vi
0
x9561 (148439)
4/4/2008 12:10:09 PM
Hi ReBoot,
why do you change everytime the filename? if you connect everytime the same name it should work.
Mike
0
x9561 (148439)
4/4/2008 12:10:12 PM
It does not work because the problem I mentioned in the OP occurs.
Will try the uploaded VI!
0
x9561 (148439)
4/4/2008 12:10:13 PM
Hi ReBoot,
if it not work with an empty path you can connect a path constant like shown in the attached picture.
<img src="http://forums.ni.com/attachments/ni/170/313789/1/Unbenannt.PNG"> 
MikeMessage Edited by MikeS81 on 04-04-2008  02:13 PM


Unbenannt.PNG:
http://forums.ni.com/attachments/ni/170/313789/1/Unbenannt.PNG
0
x9561 (148439)
4/4/2008 12:40:08 PM
The path itself is not a problem. The problem is only that the VI doesn't take the next file name.
0
x9561 (148439)
4/4/2008 12:40:09 PM
Hi ReBoot,
on my Windows system it works fine, could be that there are differences to Linux.
Mike
0
x9561 (148439)
4/4/2008 12:40:10 PM
Hi ReBoot. 
I managed to recreate the Problem You're seeing.
I tried to put a For loop with 10 iterations around the Example i posted and then run it. Suddenly the express VI only creates one file but with ten times the data.
It seems that the Express VI doesn't manage to finish writing the file before the next iteration.
So try wiring the Error out to the Outer While loop..... that should do the trick
/BCL
&nbsp;
0
x9561 (148439)
4/4/2008 12:40:11 PM
Hi ReBoot,
i think i got it. Set the "reset" or "zur�cksetzen" input to true.
This should help you.
Mike
0
x9561 (148439)
4/4/2008 12:40:11 PM
Hi again.
Tried something new.......Its not rocket science but it actually works......
I wired the filename output, back to the filename input.....and tadaa.......Its creates a whole lot of LVM files.... ;-)
/BCL
0
x9561 (148439)
4/4/2008 12:40:12 PM
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Problem mit Express VI &quot;Diadem report&quot; bzw. &quot;Messwerte in Datei schreiben&quot;
Hallo Zusammen! &nbsp; Habe ein Problem mit dem Express VI&nbsp; "Diadem report"&nbsp;&nbsp;bzw. "Messwerte in Datei schreiben" &nbsp; Mein Express VI befindet sich innerhalb einer While-Schleife, wo auch meine Messdaten (Regler mit Regelstrecke) generiertwerden. Folglich werden die "einzelnen" Abtastwerte der Regelung st�ndig in eine neue Datei geschrieben (somit erh�lt man quasi f�r jede Messung hunderte von Dateien bzw. einzelne Graphen pro abgetasteten Wert).Habe auch versucht das Express VI ausserhalb der Schleife zu platzieren, was nat�rlich auch nicht geht, da so nur ein Punkt gespeichert wird (da es ja nur einmal aufgerufen wird). Wie kann ich nur einen Report bzw. Datei f�r eine Messung erstellen...was mache ich falsch?? Brauche dringend eure Hilfe&nbsp; (LabView v8.2)Gru� Stonei Regelung mit PID Regler 51.vi: http://forums.ni.com/attachments/ni/170/303082/1/Regelung mit PID Regler 51.vi Danke f�r die schnelle Antwort! &nbsp; Hier mal ein&nbsp;jpg meines Programms vielleicht hilft es dir weiter?! &nbsp; Im normalen Programmablauf soll die While-Schleife eigentlich nie beendet werden, da es ja eine kontinuierliche Regelung ist. Ich w�rde gerne �ber einen boolschen Wert die Aufnahme der Daten starten und �ber einen zweiten boolschen Wert auch wieder beenden (w�hrend die Regelung l�uft), anschliessend soll ein Report der aufgenommenen Daten in Diadem erzeugt werden. &nbsp; Stecke leider noch in den...

&quot;Find the VI Named &quot;SIM Diagram Parameters.ctl&quot;
I have a application that runs on a cFP-2120. Recently I have started to get a "problem": every first time I run the program, either from the pc (on the RT target) or try to compile it to deploy, LV starts looking for a set of objects called "SIM something". When I select "ignore item" for all these objects, the program starts, apparantly normally. &nbsp; I am interested in knowing the following: - How do I find out which vi it is that causes this behaviour? In this case I found the suspect vi by systematically removing vi's, but are there any better solutions? - If these vi's are necessary, why can I run my program at all? I've excersised the code with my new solver vi's - shouldn't it crash if it doesn't find all vi's?. I'm assuming that this search for components put me at risk for unexpected crashes. - I've only used vi's from LV's palette - is it common that you get only partial packages installed? - Finally, most importantly: How can I find out what more I need to install? &nbsp; Thanks in advance.Message Edited by Rodnebb on 02-14-2008 10:29 AM SIM Continous Solver.ctl search.gif: http://forums.ni.com/attachments/ni/170/301715/1/SIM Continous Solver.ctl search.gif Yes, I have searched the entire NI folder in program files. These error messages disappear for a while if I save the entire program package under another path (Save as.. /Duplicate Hierarchy in New location). I also have t...

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