Trouble with subVI with more than 28 connector pane connections

[microes]

Hello all,

I'm trying to create a subVI out of this OPM Test (see attached) but i got a prompt saying ' The selection requires more than 28 connector pane connections for the subVI, but 28 is the maximum number of allowed connections on a connector pane. Labview cannot create a subVI from the selection. '

I tried using cluster and dragged in the controls and indicators but i don't quite see the trick.

Can anyone help?

Thank you in advance.

Using labview 8.0

Message Edited by microes on 12-27-2007 02:33 AM

[altenbach]

It seems you are just grabbing all your code followed by "create subVI". This is not the right way to do things.

You only have a few controls and indicators, so all you need to do is select a connector pattern and then assign the front panel objects to terminals.

Have a look at the LabVIEW help for details:

https://www.ni.com/docs/en-US/bundle/labview/page/selecting-a-connector-pane-pattern.html

(BTW, your VI has a lot of weird constructs, for example none of your FOR loops serve any purpose. Can you explain what they are supposed to do? Also you should refactor your "code worm" into a compact state machine that fits on one screen. This allows you to avoid these ugly STOP primitives. Use shift registers for the increment counters).

[microes]

Hello altenbach,

thanks for your quick reply. I removed the FOR Loops, doesn't make sense since i only intend to run it once. I edited the connector pane but i'm still getting the error prompt when i tried to create subVI.

Is there a way i can reduce the present code that fits to one screen? by creating subVI?

Sorry, is my first time meddling with connector pane.

Any help will be much appreciated.

[altenbach]

Don't use the "create subVI" menu!!!

Please read all links in the help link I provided. Once you assign your controls and indicators to connectors, you have the desired subVI. Just save it under a new name.

[Gabi1]

on top of Altenbach comments:

if you want to use the whole program as a subvi, you do not need to create a subvi. it is already as is a subvi. suffice is that you define your controls and indicators to be connectable from outside. to do so, right click on the icon (upper right side), and select "show connector". then right click on 'patterns" to choose the pattern you want. you will need in your case about 16 connectors. then, with the mouse, click on any case of the connector, and correlate it with a control/indic on your screen.

et voila! your vi can now be used as a sub in any other program.

yet, i would propose you to do a step by step approach: look at all the repetitive elements of your program, and assemble them by "create subvi". already your program will be more readable. then, try to get rid of the sequence structure (see Altenbach nugget), and redesign a little the prog to sit in a state machine.

good luck

[microes]

Hey altenbach and Gabi1,

yes i didn't realised the vi has changed into 'connectable from outside'. Thanks, i will try to make the code more readable.