Read binary file in LabVIEW 2012

Hi,
Have anyoune experienced problems reading binary files in 2012 previously saved in 2010.
As shown on attached image, the same VI is opened in 2010 and 2012 reading the same binary file containing the data structure "ProcessList IN".
I suspect it has something to do with the variants ?
The error message does help a lot (-;
Any ideas ?
Kind regards
Kahr
Regards Kahr
Certified LabVIEW Architect
CIM A/S
Attachments:
Read_Binary_File_Error_LV2012.png ‏426 KB

Hi Kahr,
"error 1" tells one of the input parameters is wrong: it's either the path or the cluster datatype! The error message only mentions a file path AS AN EXAMPLE!
You're using BinaryRead similar to those old Datalog file functions to read a cluster of several data. It has been know that datalog files get tricky when one is using a different LabVIEW version to read them due to changes of internal data representation. Maybe that's the point that hits you now?
Best regards,
GerdW
CLAD, using 2009SP1 + LV2011SP1 + LV2014SP1 on WinXP+Win7+cRIO
Kudos are welcome

Similar Messages

Labview 8.2 Read Binary File, no pos offset option anymore?!

I have a VI that worked perfectly well in 7.1 and now I've opened it in 8.2 it doesn't work and I can't revert back to 7.1 because I accidently pressed save.
In 7.1 I used the combination of open, read and close file functions to read parts of a large binary data file - I cannot read the whole file into Labview 8.2 as it fills the memory. There isn't a terminal in the 'read binary file' function in 8.2 for 'pos offset' which is what I used to use in 7.1. How am I supposed to open the file now? Surely they have not removed such a useful facility entirely - is there another way to do it that I am not aware of?
Many thanks in advance for help,
Sarah

smercurio_fc wrote:
André, at first I could not understand your response, ...
Must be my Dutch way of writing English
Regards,
André
Using whatever version of LV the customer requires. (LV5.1-LV2012) (www.carya.nl)

How to open and read binary files?

How do I open and read Binary files?

Did you look on The Unarchiver's web site where it has a link to older versions? http://theunarchiver.googlecode.com/files/TheUnarchiver3.2_legacy.zip
The best thing to do is ask your friends what programs they used to produce these files, or at least what format files they are producing. Otherwise it's like being shown a car and given a bundle of 200 keys with no idea to which one to use, or even if any of them work with that car.
Using The Unarchiver will likely not do anything because it too will not know what format files are involved, and they may not even been in an archived format. If they sent you a Word file without telling you (a favorite of Windows users to do -- it drives me crazy when they could have just sent them in plain text), The Unarchiver won't open them. If it's a picture file then using Hexedit will just show you a bunch of unintelligible stuff as shown in an earlier post, though you may see a line of text providing a hint.
As I said earlier, often .bin may be an executable program which needs another program to actually interpret it. That's what Java is trying to do. Still, it may think it can execute the file, but it is highly unlikely somebody would send you an executable program (and if they did I would not trust it). For all you know it may be a Windows virus.

How can I read pdf files from LabVIEW with different versions of Acrobat reader?

How can I read pdf files from LabVIEW with different versions of Acrobat reader?
I have made a LabVIEW program where I have possibility to read a PDF document. When I made this LabVIEW program it was Acrobat Reader 5.0.5 that was installed on the PC. Lather when the Acrobat Reader was upgraded to version 6.0, there was an error when VI tries to launch the LabVIEW program. And Later again when we upgraded to Acrobat Reader 7.0.5 I must again do some changes and rebuild the EXE files again
It isn't so very big job to do the changes in one single LabVIEW program, but we have built a lot of LabVIEW programs so this take time to due changes every time vi update Acrobat Reader. (We have build EXE files.)
The job is to right click the ActiveX container and Click "Insert ActiveX Object", then I can brows the computer for the new version of acrobat Reader. After this I must rebuild all the "methods" in the Activex call to make the VI executable again.
Is there a way to build LabVIEW program so I don't have to do this job every time we update Acrobat Reader?
This LabVIEW program is written in LabVIEW 6.1, but I se the problem is the same in LabVIEW 8.2.
Jan Inge Gustavsen
Attachments:
Show PDF-file - Adobe Reader 7-0-5 - LV61.vi ‏43 KB
Read PDF file.jpg ‏201 KB
Show PDF-file - Adobe Reader 5-0-5 - LV61.vi ‏42 KB

hi there
try the vi
..vi.lib\platform\browser.llb\Open Acrobat Document.vi
it uses DDE or the command line to run an external application (e.g. Adobe Acrobat)
Best regards
chris
CL(A)Dly bending G-Force with LabVIEW
famous last words: "oh my god, it is full of stars!"

Reading binary files

Hi
I need some help in reading binary files. This is the code I have so far.
import java.io.InputStream;
import java.io.FileInputStream;
import java.io.IOException;
public class patternmatch {
     public static void main (String[] args) {
          final byte[] bytes = new byte[1];
          try {
               final InputStream instream = new FileInputStream (args[0]);
               while (true) {
                    final int count = instream.read (bytes);
                    if (count==-1) break;
                    System.out.println(bytes);
               instream.close();
          } catch (IOException e) {
               System.err.println(e);
}Instead of a list of hexadecimal numbers that I want I get a long line of
[B@eee36c
[B@eee36c
[B@eee36c
[B@eee36c
Which represents some address I think.
Does anyone know how to extract the hexidecimal numbers?
Thanks
Charles

double post http://forum.java.sun.com/thread.jsp?forum=31&thread=558802

How to create and read text file using LabVIEW 7.1 PDA module?

How to create and read text file using LabVIEW 7.1 PDA module? I can not create a text file and read it.
I attach my code here.
Attachments:
File_IO.vi ‏82 KB

Well my acquisition code runs perfect. The problem is reading it. I can't seem to read my data no matter what I do. My data gets saved as a string using the array to string vi but I've read that the string to array vi (which I need to convert back to array to read my data) does not work on the pda. I'm using version 8.0. So I was trying to modify the program posted in this discussion so that it would save data from my DAQ. I did that but I still can't read the data after its saved. I really don't know what else to do. All I need to do is read the data on the pda itself. I can't understand why I'm having such a hard time doing that. I found a possible solution on another discussion that talks about parsing the strings because of the bug in the "string to array" vi. However, that lead me to another problem because for some reason, the array indicators or graphs don't function on the pda. When i build the program to the pda or emulator, the array indicators are faded out on the front panel as if the function is not valid. Does this kind of help give a better picture of what I'm trying to do. Simply read data back. Thanks.

To read COMTRADE file in Labview there is an example provided. Can somebody provide the sample .cfg and .dat files required for its working?

To read COMTRADE file in Labview there is an example provided. Can somebody provide the sample .cfg and .dat files required for its working?

Thanks for the reply.
But this library doesn't contain any sample .cfg and .dat files which can be read and understood. Can you please provide the same?

Read binary file 10 bytes at a time

I want to read binary file in a specific format. There is a number at the starting of the file. That tells us where the data is starting. Suppose it says 3975, then it mean data starts at 3975. Then once I read that location I want to read data at 10bytes at a time and then convert it to numeric and display it on graph. I am attaching the file format and the current vi which I am using. please help.
Solved!
Go to Solution.
Attachments:
topo.zip ‏89 KB

Ah, the first 10 characters are a string!
After opening the file, use the Read From Text File with count set to 10. Then use the Decimal String to Number to convert this string into your "record size".
NOTE: The text indicator was just for debug purposes. You don't really need it.
There are only two ways to tell somebody thanks: Kudos and Marked Solutions
Unofficial Forum Rules and Guidelines
Attachments:
Read record size.png ‏12 KB

Write-read binary file Error 116

Hi all,
I am saving double, numeric array data into a binary file and then trying to read it back but keep on getting Error 116 (cannot read from binary file).
I have attached screenshots of the way I am writing my data into the binary file and then the way I am trying to read it. Basically my data is chunks of 2D double arrays, coming at a rate of 1hz and this is why I have to use the get and set file size functions prior to saving into the file (i.e. so that each time I can append my file with new data).
I have tried all combinations for the write to binary and read to binary file functions, thus meaning I have tried little, big and native endian options but I keep getting the same error. Also played with the way I append my data, i.e. I have used both the "offset in bytes" and "end of file" options, just in case this made any difference, but again no luck.
Any help would be much much appreciated.
Regards,
Harry
Solved!
Go to Solution.
Attachments:
Write_Bin.JPG ‏154 KB
Read_Bin.JPG ‏100 KB

Just as an amendment to my original post, I can succesfully read my data in MATLAB using the standard fread function with double precision. I presume that this means that there is nothing wrong with the way I write the data into the file. However, it would be useful for me to be able to read it directly from Labview without having to build matlab executables etc etc...
cheers again

Upload and read binary files

I have created ADF form with input file item for initiator human task ( to upload a binary file)
In the second form, I want see link of the file uploaded and I want open the file in other window ( to see the content of the binary file)
How can I do?
Thanks Elena

Azazel,
Looks like you are just being an over achiever. There are VI's specifically written for reading and writing binaries. I would guess that the VISA timeout is caused by the way you are calculating the size of the file. Since it is too big the VISA session will time out. See attached example for the easy way to do this.
Matt
Matthew Fitzsimons
Certified LabVIEW Architect
LabVIEW 6.1 ... 2013, LVOOP, GOOP, TestStand, DAQ, and Vison
Attachments:
RWbinary1.vi ‏100 KB

How to write a 2-D Array of Doubles to a binary file in LabView 8.5?

Okay, this is driving me nuts. I got a program that worked fine in LabView 8.0 but refused to write any data after my institute upgraded to LabView 8.5. The data is stored in a 2-D array of doubles and is supposed to be written to a binary file, that has been correctly opened and got a header written to it containing some meta-data of the measurement. But when the doubles from the array should be written to the file, nothing happens. All I get is an (except for the header) empty file of 786 kB. I found out that writing works if I convert the data from the array to singles right before wiring them to the "write to binary file" VI, but for several reasons I need the data as doubles. Can anyone help me? I've tried everything anyone has written here about writing to binary files and more.
Remember, it worked perfectly fine with an older version of LabView. Any ideas?

It is possible that you run into a known memory optimization bug.
Try to place an "always copy" primitive as discussed here.
Message Edited by altenbach on 11-18-2008 09:11 AM
LabVIEW Champion . Do more with less code and in less time .

Reading fits files in labview 64 bit

I need to read fits data files in labview on a 64 bit machine. I developed an application in labview 2012 (32 bit version on a win 7 x32 machine). This vi will not run on a win7 x64 machine. The problem is with the gfitsio library I used to read the files (downloaded from http://heasarc.gsfc.nasa.gov/docs/software/fitsio/fitsio.html). It seems they will not work with labview x64. I installed labview 32 bit on the same machine & tried to run the vi with that, but no luck.
Any ideas would be appreciated,
Thanks,
Joe

It appears the FITS libraries are 32-bit, so they cannot be called from 64-bit LabVIEW. You should be able to call them from 32-bit LabVIEW on a 64-bit machine. The only difficulty you may run into is locating the DLL. 64-bit versions of Windows put DLLs in different places than 32-bit. Check you system path and make sure your DLL resides in the search path. You can also load the DLL explicitly using Windows Kernel32.dll calls before loading code which calls it. This is awkward, but works in some cases.
Since the source code is available, you may be able to create a 64-bit DLL that 64-bit LabVIEW could use. I am the wrong person to cousel you on how to do this, but it should be possible.
If you need more info, please ask.
This account is no longer active. Contact ShadesOfGray for current posts and information.

How to read binary file in Matlab

"Hello all!
Labview 7.0 has an example "Cont Acq to File (binary).vi" log the PCI 6014 card and writes the data to a binary file. How can I read that
file in Matlab(6.5.0... R13)? Does anyone have a solution for this?

Hello,
Basically you can do it by saving the data in a file in MATLAB and reading it directly from LabVIEW, or vice versa. In MATLAB , the command "save" allows you to save the data in binary format (*.mat) or ASCII format. You also have an option of saving it in ASCII format using a tab delimiter between data points.
There is a knowledge base which talks in detail about how to share data in between labview and matlab Import data from labview to Matlab and vice versa.
Hope this helps. If not, please feel free to ask more questions.
Good luck and have a great day!
Koninika
National Instruments

How to read binary files wrt specific BYTE size and length??

Hello Everyone,
I have a project I want to accomplish. I have a binary file, and I would like to read the data and print on wfm in a specific order and size.
The data is 16 bit binary type , and needs to be read in chunks of 2 bytes.
i have 30 bytes of sample 1.
followed by 2 bytes of sample 2.
followed by another 2 bytes of sample 3.
steps 2-4 should be repeated 10 times and then i should read sample 4 which is of 2 bytes.....
How should I do it?? I don't have any VI build... all i have is the example VI...
can anyone pleasehelp me???
Now on LabVIEW 10.0 on Win7

smercurio_fc, sorry for the confusion, i will try my best to explain...
1. No, i don;t have to read the file again, once it has read, I used
while loop just to see the data updating (i press run, and before i can
visualize i have the waveforms; i can get rid of the while loop)
2. I have 30 different values of 1 sample. actually, the data is cmg
from tri-axial accelerometer; each axis is of 10 bytes(hence 3*10 =
30bytes)
3. I am repeating the steps 2-4 10 times because the data was written
into the binary file after 10 times sampling the sensors(if first 3
samples are read @ 1000hz, sample 4 was read at 1000/10 = 100hz)
4. I am using the graphs to interpret the values, that's it. The
values are already scaled when they were wrote to the binary file, I
have to simply interpret it.
I have made some changes in the VI, now i am reading only the first
30bytes, that too, in chunks of 10-10-10 bytes, and plotting the 3
samples simultaneously on a waveform chart. (will approach 1
sensor/sample at a time) and running the loop for 10 times. I have changed I8 to I16 now.
Please let me know if it makes sense to you now.
P.S. each sample is a sensor data.
Now on LabVIEW 10.0 on Win7
Attachments:
data_read.vi ‏24 KB

How to read binary file in developer 2000

Hi,
Is there any method through which i can read a binary file(pdf)
in developer 2000
Thanks in advance

Hello,
Basically you can do it by saving the data in a file in MATLAB and reading it directly from LabVIEW, or vice versa. In MATLAB , the command "save" allows you to save the data in binary format (*.mat) or ASCII format. You also have an option of saving it in ASCII format using a tab delimiter between data points.
There is a knowledge base which talks in detail about how to share data in between labview and matlab Import data from labview to Matlab and vice versa.
Hope this helps. If not, please feel free to ask more questions.
Good luck and have a great day!
Koninika
National Instruments

Read binary file in LabVIEW 2012

Similar Messages

Maybe you are looking for