frequncy measurement usb 6221

[athavale]

actually (entey,date,time, speed)this string i want at the beging of the file but only at onces when file is created.

but this string is connected to binary file data that why when i run my program that time after one one reading that constant string also come

i want set that string at beging of file that means as header

its not work properly

tell me how to edit that program 

[Dennis_Knutson]

I know you want it only once. You already said that and your original code was using the Write to Binary function. If you don't want to use that, then don't. And, I already told you how to edit the program - IN THE CASE WHERE THE FILE IS CREATED, WRITE THE HEADER.

[athavale]

thanks for reply me now its working

but one problem is that its not read contious data in file ,when file size 356kb then  its stop and error has come 

what the maximum size of excel?

i think txt file have more capacity to store data than excel.

becoause every second i measure data and store it. 

give me suggision may i change this txt format or excel also can store 24 hours data?

[Dennis_Knutson]

Older versions of Excel have a maximum of rows of about 65k.

[athavale]

hey i didn't find it its creating new file or not?

because before creating any new file it showing some error some read error

i attach that error please check it and give me any suggsion 

[Dennis_Knutson]

No, I will not read a bmp file that you just renamed to jpg to get around the ban on bmp attachments. Do you really think that changing the extension changes the file type?

Edit - I had forgotten that I had said this before. Stop, really stop doing this. It is inappropriate behavior.

Message Edited by Dennis Knutson on 01-04-2010 09:21 PM

[athavale]

sorry dennis

well error 200278 has comes

its create file properly but after some time when file is 469kb it will generate error 200278.

Error – 200278 ocurred at DAQmx Read (Counter 1D DBL 1Chan NSamp).vi

 

Possible reason(s): 

Attempted to read a sample beyond the final sample acquired. The acquisition has stopped, therefore the sample specified by the combination of position and offset will never be available. 

Specify a position and offset which selects a sample up to, but not beyond, the final sample acquired. The final sample acquired can be determined by querying the total samples acquired after an acquisition has stopped. 

Attempted to Read Sample: 0 

Property: RelativeTo

Corresponding Value: Current Read

Position Property: Offset

Corresponding Value:   

Task Name: _unnamedTask<240C>

I READ ONE SOLUTION IN THAT WE HAVE SET  DAQmx timing IS CONTIOUS SAMPLE

I ALREADY SET THAT 

 

[athavale]

hi any one is there

i send one error it has comes after some time

well you please tell how to correct it

i set continus sample but its not work after some time 

[athavale]

HEY ANY ONE IS THERE MY PROGRAMS ITS WORK NOW BUT AFTER SOME TIME OR AFTER SOME RECORDS ITS CREATE ERROR200278.

I WROTE THAT I THINKS BUT NO ONE REPLY ME.

PLEASE GIVE ME ANY SUGGESION. 

[Dennis_Knutson]

If you don't want to change to finite samples, then you should switch to a consumer/producer architecture so that the file write does not interfere with the acquisition.