How can I send text file to printer port?

[Wayne.C]

Can you post your vi?  If you look at the image I posted you should be able to reproduce my vi.  It should do exactly what you need.

[tbd]

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@filozof wrote:

I need to print a txt file from printer. I use sys exec.vi and bat file to do this. Bat file contains copy C:\plot.txt to lpt2  command. How can I do same issue with labview icons?

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Hi filozof,

I'm not sure whether you understood(?) - no batch file is needed,  you could make a string="cmd /C "copy C:\plot.txt lpt2""

and wire that string to the System Exec.VI "command line" parameter.  System Exec.VI has a LabVIEW icon.

Or follow centerbolt's example and write to a "local printer" using the "Report Generation" VIs.  The fact that you're printing a VI's front panel proves this technique should work - what did you have "File Path" set to?

If you're feeling masochistic, it might even be possible to write directly to "LPT1" using VISA Write,  though a form-feed command was often needed (in the old days) to see the last/only page of text.  To send a form-feed to the parallel-port, would be painful (but is possible). 

Cheers!

[filozof]

yes it prints text file thank you so much.

Now i try your command at he sys exec icon without batch file. I write string  cmd/c"copy C:\plot.txt lpt2" at the command line sys exec.icon. But It can not print.

[filozof]

Cmd /C "C:\plot.txt >lpt2" after using this command printed page include "1 file(s) copied.

[filozof]

Cmd /C "C:\plot.txt >lpt2" after using that ,printed page shows just"1 file(s) copied.

[shoneill]

Maybe my mistake.

Try replacing "lpt2" with "prn2".

Shane.

[filozof]

Printer prints only "1file(s) copied." Port is correct but I don't understand that when I use batch file,I can take print with c:\plot.txt  lpt2

instead of that, I write Cmd /C "copy C:\plot.txt >lpt2" in the command line in sys exec.vi, Printer prints only "1file(s) copied."sentence

[DuffmanSays]

You may want to take a look at the Windows API VI libraries. You will find a library called winevent.llb. Within this library is a VI named FileMan Print File. You can simply wire a path to a file to this VI and Windows will use the default application to force the specified file to print. If you have a text file saved on dick, you can use this VI to print the text file. I hope this helps!

Mike D.
National Instruments
Applications Engineer

[shoneill]

If you have it working in a batch file, you can also call the batch file from LabVIEW, or simply use the text contained within the batch file for your system exec function (with cmd /C as prefix)

Shane

[filozof]

I have sys exec. file and batch file.Batch file contain copy c:\plot.txt lpt2. When I write location of batch file in command line of sys exec. icon, I can print. But I want to improve that method. I don't want to batch file to copy c:\plot.txt lpt2.

Some friends said that no needed to batch file to copy, use Cmd/C"copy c:\plot.txt> lpt2" to command line.  when I do that, Printer sends only "1file(s) copied". It does not print text file.