Sudden LabVIEW 6.0 instability and a programming query

[andrewW]

Hi all!

LabVIEW 6.0 instability:
-------------------------
After roughly a year of stable operation, my LabVIEW 6.0 (Win 2000 NT)
is suddenly given to wanton bouts of instability. The software is installed on
my lab PC and handles a modest 5 instruments over a PCMCIA-GPIB
interface. The program crashes with the following error message:

"LabVIEW.exe has generated errors and will be closed by Windows.
You will need to restart the program.

An error log is being created."

The generated error log file is then "www.log" of which I cannot make head or
tail. Anyone dealt with this problem in their travails? I suspect wayward
web and networking settings are to blame but am too green to try
anything drastic. I am a bit w
ary of having to reinstall the software as I
need one more series of measurements before writing my MSc thesis.
Typical measurements last 72 hrs+.

Programming query:
-------------------------
I wish to program a master ".vi" to contain and singly execute ("case")
independently functioning slave ".vi" 's. My chief problem is that the
"slaves" each have many setup parameters, many unique but some
common. As the common setup parameters are constants, I would
like to rationalise the final solution by centalising their specification
at the "master" level. The goal is for the "master" to:

1. Be the site of specification of all constants
2. Enable the user to specify unique parameters before execution of
every "case"d "slave"


Thanks in advance.



Best regards,

Andrew

[Jeremy Braden]

If you are suddenly experiencing instability, then something has changed on your computer. Finding out the change can be very difficult and often one has to uninstall and reinstall software (and sometimes the OS).

It sound like you need to pass references to the subVI. This way you can have a top level VI with the controls that can change the values of the contols in the subVI. There are several knowlegebases that discuss how to do this. Goto www.ni.com >> support >> advanced search (it is at the bottom--click on the words). This is the best way to search NI's site because it allows users to limit their search to resources of interest. I have this page bookmarked. In your case enter labview reference subvi in the all the words field, search everythi
ng, and press go.
If you need to brush up on references and property nodes consult the LabVIEW user manual.

Jeremy

[andrewW]

Thanks for the pointers, Jeremy.

I will commence the quest tomorrow.


Cheers!

Andrew

> If you are suddenly experiencing instability, then something has
> changed on your computer. Finding out the change can be very
> difficult and often one has to uninstall and reinstall software (and
> sometimes the OS).
>
> It sound like you need to pass references to the subVI. This way you
> can have a top level VI with the controls that can change the values
> of the contols in the subVI. There are several knowlegebases that
> discuss how to do this. Goto www.ni.com >> support >> advanced search
> (it is at the bottom--click on the words). This is the best way to
> search NI's site because it allows users to limit their search to
> resources of interest. I hav
e this page bookmarked. In your case
> enter labview reference subvi in the all the words field, search
> everything, and press go.
> If you need to brush up on references and property nodes consult the
> LabVIEW user manual.
>
> Jeremy