Online printing of Data to printer by labview 7.0

[suresh.r]

Hi
I hav selected few RTD temp data, which hav to be printed for x time interval whenver i update the same has to be printed in the printer using dot matrix. But after every 1 line of printing the printer ejects to the next page, i would like print as many lines possilbe in the single page. can u help me out in this issue.

[Sean_C.]

Hello Suresh.R,

Thank you for contacting National Instruments.

There are a number of possible reasons for the printer only printing one line per page.
If you are using a print VI in LabVIEW in a loop, make sure that you are not opening and closing the report during each iteration. You want to open the report first, run all the print iterations, and then close the report after the printing is complete.
The problem might also be in the data itself. Try printing something else from labview to ensure that the printer is not causing the problem.

If neither of these suggestions help, let me know what VIs you are using and I will try to reproduce the error.

Have a great day.

Sean C.
Applications Engineer
National Instruments

[suresh.r]

Hi Sean
Thanx for the reply. When iam writing to the file, iam able to write all the data for every logging. Iam able to print all the data at the end of the logging from the file to the printer. where as when iam trying to give the data to the printer for every log at given interval. The printer prints only the current data entry and shifts to a new page rather than the next line. Iam not opening & closing the report at any given time. Where as my requirement is data to be printer for every log at given interval. I tried checking the parameters of the printer ( Epson FX 105) it does not have any parameters for Nos of lines all it says is nos of pages to print. Plz suggest how to resolve the problems. Plz find the attached Online file Vi. Which iam
using to print. Developed in labview 7.0

[Sean_C.]

Suresh,

Thank you for the information.

From what I can gather, you are trying to print each line after it is created by your VI. When you print each line in LabVIEW, you send a print job to the printer. Most printers will automatically form feed to the next page after a print job is complete. There is no way, in LabVIEW, to prevent this. I searched Epson�s website and found this link to the FX 1050 (is this what you meant by FX 105?) user manual:

http://www.epson.com/cgi-bin/Store/support/supDetail.jsp?BV_UseBVCookie=yes&infoType=Doc&oid=14294&prodoid=8191&category=Products&menuSpec=7

Chapter 2: Paper handling and Chapter 6: Troubleshooting might be what you are looking for.

I hope this helps.

Sean C.
Applications Engineer

National Instruments