How to use Open/Create/Replace File.vi

How to change Open/Create/Replace File.vi to Open File?

Use the routine Write Characters to File.vi found under the File IO palette. It has a boolean control on the front panel. If this is set true, data is appended to the end of an existing file, or a new one is created if the file doesn't exist. If the control is set to false, the file is always created new--overwriting any existing file with the same name.
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Error 7 occurred at open/create/replace file

Hello,
I have searched the forum and could not find any useful information regarding my problem, so hope you may shed some light. MyVI can create a new csv (text) file by using the time to name the file, so every time the new file will be created with a different name and file path is not a relative path. I can run the VI in both development environment and stand along executable without any problem. But,
One of my colleagues cannot run the executable exe on her machine because Error 7 occurred at Open/Create/Replace File in xxxx.vi Possible reason: LabVIEW: File not found. The file might be in a different location or deleted. Use the command prompt or the file explorer to verify that the path is correct.
My question is why only she cannot run this exe on her machine. I have checked a few different PC in my office and all of them can run this exe without problem, so I am pretty sure the code is fine.
I have already ask her to do,
Run the executable as administrator
Save the new file to other drives (not C: drive)
but she still cannot run the executable. I dont think this is a premission issue, otherwise, LabVIEW would give a different error, Error 8 I believe.
Both her PC and my PC is running Windows 7 professional 64-bit. The only difference I can see is that she is based in US and I am based Australia. Does anyone have any idea? Please help.
Thanks,
Sherman

I’m not sure but expecting like below,
As you said, your creating file name with Time. Make sure file name is correct and there is no special characters (like, / or : ). If your formatting time to string with “Format Date/Time String.vi” (while creating file name), based on UTC format, string will change.
UTC format specifies if the output string is in Universal Time or in the configured time zone for the computer. If TRUE, date/time string is in Universal Time. The default is FALSE.
Make sure you have access rights to create files into mentioned folder. Try to create new file manually.
Munna

Error 5 occurred at Open/Create/Replace File in Write spreadsheet String.vi

Hi everyone,
can anyone help me with this problem?
"error 5 occurred at Open/Create/Replace File in Write spreadsheet String.vi "
I've been using this part of the program for over a year an suddenly this error occures. But not always, mainly at the very beginning of my tests when the file should not be open.
Info: I'm using a realtime PXI-System. Maybe the amount of data can cause the problem? (about 2MB)
Grüße
Meike
Attachments:
writeResults.jpg ‏345 KB
error5.jpg ‏52 KB

Hi Meike,
is the file opened by a different program? Do you try to access it by FTP in parallel to your VI?
You could use basic file functions instead of WriteSpreadsheetFile. That way you could open the file before starting the loop, keep it open all the time and close it once you're finished - with the added benefit of easier error handling…
Best regards,
GerdW
CLAD, using 2009SP1 + LV2011SP1 + LV2014SP1 on WinXP+Win7+cRIO
Kudos are welcome

Bug in Open/Create/Replace File

I found this problem in LabVIEW 2009. The boolean indicator doesn't seem to work properly in the first snippet. It returns TRUE even with a valid path. With some trial and error I found a workaround that will make it work properly for now. I just wire an Error Out after the Open/Create/Replace File (second snippet). Is this a bug?? Am I doing something wrong??
I've got a lot of code that uses this to test to check for existing files and then wire the output to a case statement. I also know there is a Check if File/Folder Exists.vi available. I would hate to spend a lot of time changing all my code if this is a known bug and it will be fixed in the next update. If it is not a know bug, where can I submit this??
Solved!
Go to Solution.

Its not a bug. You have race condition between indicator and close ref.
Use it in this way:
Andrey.

Odd Open/Create/Replace File Behaviour

Hi all,
I will make my question as general as possible as I believe someone must have come accross this behaviour before. I am using the Open/Create/Replace File function to programmatically open a file, by giving a path input created in an earlier vi. The odd behaviour I observe is that although Labview returns Error 1 when I give my file programmatically, it reads the file OK if I give it as a constant. The path constant I give is exactly the same as the one I am tryinng to give programmatically.
Any suggestions? Is it to do with some string formatting problem? I have attached my portion of VI dealing with the path_in section.
Thanks for your time,
Regards,
Harry
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Attachments:
Read_File_VI.JPG ‏262 KB

Wild guess: You need to use "build path" instead of "concatenate strings" to built the path.
(Also use a path diagram constant (not a string!) for "c:\ni-rt\" and get rid of the "trim whitespace" and "string to path".)
See if it makes a difference. (build path is OS independent while string operations are not).
Never operate on paths as strings. There are very few instances where that would be appropriate.
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Modification to Open/Create/Replace file vi in Labview

I'm a relative newbie to LabView so this modification described below is a daunting task for me, given the complexity of the block diagram in the Open/Create/Replace file vi .
I want to change the dialog box and choices when you have selected a file that already exists from Replace or Cancel as the only 2 options to:
ReplaceFile AddToExistingFile RePromptForANewFile QuitApplication (this 4 option choice is my first preference)
or at minimum
ReplaceFile AddToExistingFile Cancel (adding AddToExistingFile as an option)

First of all, you should know that playing with the VIs supplied with LV is not always a good idea and open\create\replace is an example for a particularly not-good-for-editing VI. In any case, you should not overwrite the original.
In this case, you can use Edit>>Find to find the 2 button dialog you're seeing. When I look at where it's located, it's enough to discourage any thought about changing the VI. At the moment it has a single output (overwrite?). You could replace it with a subVI which will have all your buttons, but you will need to add code to handle the extra buttons, which can be very dangerous.
You may wish to create a much simpler logic instead which will do what you want yourself (using the VIs in the File I/O>>Advanced palette, like Open File and File properties), which will probably be safer.
Try to take over the world!

Open/create/replace file.vi for Excel

I have a macro enabled Excel file (.xlsm) that I would like to pr0grammaticaly open and then run the macro. Shouldn't I be able to use the "open/create/replace file.vi" to open the file?

I believe the Report Generation Toolkit has a subpalette for Macros but I don't know what you can do with it. The Report Generation toolkit comes with some versions of LabVIEW 2014, I think Full and Professional, but was separate before that. At the end of the day ActiveX will need to be used somehow.
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"open/create/replace file"

Under the file I/O functions palette there is a vi named "Open/Create/Replace File.vi". My application builder has trouble with this file name. Is there any reason to name a vi with /'s? Seems to me that is not a valid file name convention in Windows.
PaulG.
7.1.1
2000/XP
PaulG.
"I enjoy talking to you. Your mind appeals to me. It resembles my own mind except that you happen to be insane." -- George Orwell

Yes it's a pain. Yes it's not very compatible.
Yes you can rename it to include "-"s instead of "\"s and stick it in the same llb as the original. I always make a copy, draw a nice big red X on the old one and leave them side-by side in my VI.lib folder. That way I get around the problem.....
Hope this helps
Shane.
Message Edited by shoneill on 03-30-200602:34 PM
Using LV 6.1 and 8.2.1 on W2k (SP4) and WXP (SP2)
Attachments:
Changed file IO.png ‏4 KB

Error7 occured at open/create/replace file

Helo
The vi attached is supposed to log current vs power.im supposed to see current changes on the front panel
under the current(A) string but it remains zero even when the current setting is not zero.another problem is when i run the vi i get the error message
error7 occured at open/create/replace file
can someone help with this
thanks
Attachments:
PSC-ETH TCP Demo applicationver4.vi ‏164 KB

duplicate post

Error 1430 occurred at Open/Create/Replace File in NI_Fuzzy_Logic_API.lvlib:FL Load Fuzzy System.vi- Untitled 3 Possible reason(s): LabVIEW: The path is empty or relative. You must use an absolute path. Not A Path how can i copy it in new vi plz help

when i am copy the vi that is in find example>fuzzy>fuzzyEx with pi control the follwing error occuring
'error 1430 occured at open/create/replacefile in NI Fuzzy logic API.LVLIB FL LOAD FUZZY SYTEM.vi
untitel 3 possible reason the pat is empty or relative you must se use an absolute patth <not apath>
plz help me i only want that i can copy this vi in new vi but when i do so the above error occur and fuzzy logic cotroller is highlited

Hello Nofil,
This is probably happening because you have made a copy of the VI without changing the name/ location on the disc. I have saved a copy of the VI for you, it is in LabVIEW 2010 SP1, please ask if you want this in a previous version.
Regards
Andrew George @ NI UK
Attachments:
Fuzzy Tanks with PI.vi ‏31 KB

How to avoid dialog in Open/Create/Replace File? (yes, I set 'no adv.dialog')

I would like to avoid the dialog box which seems to
appear whenever I can successfully open a file:
I tried both 'advisory dialog' FALSE and TRUE for the following, as well as all file modes (open,create,etc):
path:"C:\labview" file:"test.txt" ERROR 8
path:nothing file:"C:\labview\test.txt" dialog box!
path:"C:\labview\test.txt" file:nothing ERROR 8
path:"C:\labview\test.txt" file:"C:\labview\test.txt"
ERROR 8
as well as other less sensical combinations.

I'm guessing that you put the filename into the 'default filename' input.
Instead you need to put the path (including filename) into the 'file path'
input. The 'default filename' input is for when you want to allow the user
to input the filename but give him a suggestion of what would be
appropriate.
"Grover" wrote in message
news:[email protected]..
> I am having the same problem when trying to programmatically create a
> file. I have made sure I have a legitimate file path/name, no other
> app/vi is denying access, I have 2k, but I am admin plus the folder
> where I try creating the file has permissions for everyone set to full
> control. Any ideas??

How to Use or Create XSD files in Crystal Reports XI R2 designer

Hi,
I have a crystal reports application which was developed using .Net crystal report designer, where XSD is used .
now we have to develop the same application using Crystal Reports XI R2 designer , here i could not find any option for creating or using XSD files , can you give any suggestions on that
regards,
kathyaini

Hi Kathayini,
Thanks for your prompt reply.
We can use the existing XSD which are present in .Net
But with current versions of crystal we doesn't have the feature to create XSD files at crystal designer level.
So, it is suggested to use the XSD files which are present in .Net and can also create new XSD files.
Let me know if you have any further queries.
Regards,
Naveen.

Error with "Open/Create/Replace File" function with cancel button

I've attached a very simple VI that embodies what I want to do with my Open File function. I simply want to stop the rest of my program (theoretically encased in the Case Structure) from running if the user deigns not to specify a file location.
However, if the Cancel button is clicked an error is produced before the rest of the program runs. If you ignore the error and continue, the "cancelled' variable is appropriately made true and the Case Structure runs properly. I simply want to remove the error message LabView gives me.
Any ideas on why or how?
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Attachments:
Open file test.vi ‏34 KB

The cancel button gives you error code 43 (if I remember correctly). After your file vi's, use the general error handler (GEH) to clear this error (and no other errors). Use
[exception action]=Cancle Error on Match
[exception code]=43
type of dialog=no dialog
Felix
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Open/create/replace file.vi cancel pb

in the windows dialog box I have two options for example open and cancel if my choice is cancel it want to read a file or cancel if my choice is cancel it stop the vi with an error. How can i change the first cancel in a real cancel? Thank you

It's simple enough to modify the VI any way you want. The cancelled output is wired to a case statement that sets the error status Boolean to True and generates error code 43. You can remove the write to the error cluster. The other way to do it is to trap error code 43 in your main VI by just doing a comparison and clear it or do whatever other action you might want to take. If you do modify the VI, make sure to save it with a new name and in a new location.

Error 7 occurred at Open/Create/Replace File in Write Spreadsheet String.vi

Hello,
I am attempting to use a CompactRIO with 9225 analog input module to measure some analog signal.
LabVIEW version is 2013 (32bit), when I run th VI, errot 7 occurred.
I'm pretty sure the file path is correct , but the error information indicated different path used "\" not "/", I attached the picture.
I don't know why it happen, appreciate any suggestion to solve this problem.
Thanks.
Frank
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Attachments:
error 7.jpg ‏227 KB

It is looking for the file on the RT system, which is not windows.
LabVIEW Champion . Do more with less code and in less time .

How to use Open/Create/Replace File.vi

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