topic Re: clone vi in LabVIEW

clone vi

lavalava — Mon, 03 Nov 2008 16:15:29 GMT

Guys,

Quick question, how do you clone a VI? I just download an example but I'm not sure how this guy did it...

Re: clone vi

lavalava — Mon, 03 Nov 2008 16:16:05 GMT

Re: clone vi

lavalava — Mon, 03 Nov 2008 16:17:18 GMT

I've noticed that if I hit ctrl+m, it loses all clone mode but how do I get back to clone mode or vice versa?

Re: clone vi

Ben — Mon, 03 Nov 2008 16:18:37 GMT

VI properties >>> Execution

Set VI as re-entrant.

Ben

Re: clone vi

lavalava — Mon, 03 Nov 2008 16:25:29 GMT

the file was set as "re-entrant" but if I drag and drop this file into another VI, it doesn't show up as clone. How should I go about doing it? thanks

Re: clone vi

altenbach — Fri, 23 May 2025 17:21:24 GMT

The relevant LabVIEW help entry.

A description of the new feature. (When it was introduced in LabVIEW 8.0)

ctrl+M switches between run mode and edit mode, that's why things change.

An earlier discussion.

Re: clone vi

lavalava — Mon, 03 Nov 2008 16:40:56 GMT

i've read those threads before I post this one, all I want to do is create a clone. After I set my VI to re-entrant, I drag and drop this file into another file and it still would not show up as a clone. How can I insert a re-entrant file as a clone?

Re: clone vi

lavalava — Mon, 03 Nov 2008 16:51:03 GMT

ok I got it thanks guys

Re: clone vi

cuthbert — Sat, 07 Jan 2012 19:08:51 GMT

I have a strange thing happening that is because I have a cloned VI on my block diagram. After using CTRL-M to disable the cloning and getting a non-rentrant VI, I then save the non-reentrant VI in a folder so that I can access the VI. And when I open the saved VI it is in the non-reentrant mode! However when I go back into the original VI that uses this cloned VI and replace the cloned VI with the non-cloned VI and then open it up I get the expected results where I can actually change the code in this VI. I have actually gone into the replaced reentrant version of the original cloned VI on the block diagram and then replaced the VI witht the saved non-reentrant version of the VI and changed the code in the VI and then saved it again. Then I reopened the VI and looked the block diagram and the thing was still in the non-reentrant mode. However, When I saved the main VI the non-reentrant VI again became cloned as a reentrant version! This seems to me to be really strange and I am at a loss to reason this out! Can anyone explain this behavior?

Re: clone vi

RavensFan — Sat, 07 Jan 2012 20:06:54 GMT

You are confusing terminology.

CTRL-M doesn't change a VI from reentrant to non-reentrant or enable/disable cloning. You don't "enable/disable" cloning.

Reentrancy is a property defined under the File / VI properties/ Execution menu. Ctrl-M changes the appearance of a VI from edit mode (what you normally see) to run mode (what you see if the VI is running.) It will also allow a copy of a reentrant VI that is open (a "Clone") to open up the real, original copy of the VI so you can do editing on it.

A VI that is non-reentrant means there is only ever a single copy of the VI that is running at any given time. If you try to call a non-reentrant VI from multiple places at the same time, each subVI instance has to wait until the other subVI instances have stopped using it. With a reentrant VI, a copy of the VI is made when it is called (the "clone"). That means more than one copy of the same subVI can run at the same time, each with its own memory space.

Re: clone vi

ncm — Fri, 24 Jun 2016 20:33:44 GMT

Can you elaborate for the 2015 software how to change from reentrant back to a normal vi? I looked under File>VI Properties and didn't see execution under this. I would like to not have any cloned sub vi's and be able to do my editing as normal.

Thanks!!

Re: clone vi

billko — Fri, 24 Jun 2016 20:41:29 GMT

@ncm wrote:
Can you elaborate for the 2015 software how to change from reentrant back to a normal vi? I looked under File>VI Properties and didn't see execution under this. I would like to not have any cloned sub vi's and be able to do my editing as normal.
Thanks!!

You should open it from the project manager. Opening it from the block diagram opens up that cloned instance. I assume this is so that when you are debugging you can have any/all of the instances open and can see them all working at the same time.

Re: clone vi

altenbach — Fri, 24 Jun 2016 21:59:53 GMT

@ncm wrote:
I would like to not have any cloned sub vi's and be able to do my editing as normal.

Just press ctrl+m on the clone and it will open the master for editing

@ncm wrote:
Can you elaborate for the 2015 software how to change from reentrant back to a normal vi? I looked under File>VI Properties and didn't see execution under this.

You have to do it on the master. VI properties are greyed out on the clone, so just press ctrl+m first, then change the settings.

Re: clone vi

ncm — Mon, 27 Jun 2016 14:52:26 GMT

Thanks, altenbach!!!! That is exactly what I needed, much appreciated!