Program not discarding data from previous run

[Jagwa]

Hi all,

I am having some problems with my program. The problem is that the program runs perfectly on the first run, creating an array of data that is received from the serial port and writes it to a spreadsheet. However when the program is run again without closing the window or changing anything in the block diagram, the new array is written to the spreadsheet along with the unwanted old one, this time in two columns.

If something in the block diagram is moved the program runs perfectly on the next run. Does anyone know why this data is getting stuck in mwemory somewhere and how to get rid of it without having to reopen the program each time??

Any help is welcome

[Norbert_B]

I assume that you are using uninitialized shiftregisters to collect your data in combination with "build array".

Solution: If you don't want to have old data in the shiftregister, you have to init it.

Note: this is desired behavior

hope this helps,

Norbert 

[PJS]

Or if you are using a waveform chart, you will need to clear the history.  Do this with a property node.

 

[Jagwa]

Here is the vi that i made. The data is read as a string

[xdaf]

Can you please post it in LV8.5 or earlier format, or as picture?

[Norbert_B]

In your case, you are using a feedback node which is similar to the shiftregister:

Norbert 

[PJS · Accepted solution]

Wire the initialize input on the node.

[Jagwa]

Can i Init a feedback node somehow?

[PJS]

?  It is shown in the picture in my last post

Never Mind 😉

Message Edited by PJS on 11-18-2009 08:16 AM

[Jagwa]

thanks for all the help guys. works like a dream