network variable error

[Dave_Thomson]

   I am using (trying to use) LabVIEW 8.0.1 on a Windows XP machine as host, PXI-8045 as target.  Whenever I create a network variable in a new project, it breaks the VI.  The VI error window reports that "This node is not execuable." and under the explanation:  This node is not executable because an unexpected error occured during code generation."
   Any ideas what could be causing this?

Regards,
   Dave T.

[Dave_Thomson]

   Two further observations:  this happens for VI's targeted to Windows or RT, and the errors go away if the variables have their Real-Time FIFOs disabled.

[Mark.K]

Dave,

When you upgrated to LV 8.0.1 did you do the mass compile as described in the Readme for the upgrade?  Also, have you installed the LV Real-Time Module 8.0.1 patch?

[Dave_Thomson]

Good questions.  I did indeed do the mass compile and install the RT 8.0.1 patch.

Dave

[Mark.K]

In creating a network shared variable that uses buffering in LV 8.0.1 project, I do not get the same behavior (broken VI).  Are there more explicit steps that lead to this behavior?  Have you seen it on more than one system?

[Greg G.]

In Tools>>Options, on the "Block Diagram" page, what is your setting for "Delete/copy panel terminals from diagram"?  If this setting is unchecked, it may cause this error when using a variable with RT FIFO enabled.

[Dave_Thomson]

    This error will appear when you create a variable and leave everything at its default EXCEPT enable the RT FIFOs.  Then drop the variable on a blank diagram, and it is broken.
   I was going to try this on a second machine, but don't have access to the RT disks right now.  I'll do that in a few days.

Greg C,
   Thanks for the tip.  Yes, I do have the Delete from Block Diagram option turned off.  I'll try turning it on and see what happens.  Odd interaction, that.

Regards,
   Dave

[Dave_Thomson]

GregC,
    Thanks!  Checking that option fixed things.  Still seems like an odd interaction, and it seems odd to me that a search of the zone (which I did before posting this question) didn't result in any hits.  I must be the only RT programmer who turns that off!  Anyway, hopefully this thread will help any others who stumble across this issue.

Regards,
   Dave

[julesjay]

hi everybody,

I'm using lv rt 8.20 and I've got the same problem.

When I put a new network shared variable with fifo rt actived on my diagram, the link is broken.  the error message returned is  : "LabVIEW could not generate code for the shared variable. You must open the VI in the project that contains the library where the shared variable resides.""

If I unchecked fifo rt, the wire is normal.

And the option, delete/copy panel terminal  is checked.

I don't know how I can correct this.

thanks

Message Edité par julesjay le 03-01-2007 02:34 AM

[Rudi_N]

Jules:

Let me know if you are still experiencing this issue. I was not able to reproduce the same thing on my computer. I created a shared variable with fifo rt activated and was able to write/read values.

Rudi N.