passing parameters betweeen LV versions

[DanX]

Does anyone know how to pass parameters between LV versions? For a reason too complicated to get into, I have to run one program in LV 2009 (32-bit) and the other in LV 2009 (64-bit). Is there any way to pass parameters (strings, etc.) between the two programs? The only thing I can think of is turning the programs into executables. Any other ideas? Thanks in advance for any help you can give me.

[GerdW]

Hi Dan,

how will making executables help to pass parameters between VIs? Shouldn't you be using something like files to pass them?

[MarcoMauri]

Hi DanX!

Are the two programs supposed to run on the same machine? (if yes, at least one of them has to be an executable, since, as far as I know, you can't run two version of Labview at the same time)

In any case, data can be exchanged between them via Datasocket, TCP/IP, UDP, Shared Variables, files....

Marco

[GerdW]

Hi Marco,

I often run two (or even more) LV versions at the same time - it works, but you have to be careful

[DanX]

You can run two different versions of LV on a single computer at the same time.

I can talk directly within one version of LV between programs using "open vi reference" and "invoke node" to get and set parameters, controls, etc. I need to do this between two versions of LV. I thought of a way to do this indirectly by reading/writing from text files, etc. but I was wondering if there was a direct way. Doing this with executables may amount to the same thing. But I was fishing for a better method (i.e., more direct passing)...  

[MarcoMauri]

Datasocket, TCP/IP, UDP or Shared Variables aren't ok?

Moreover they are faster then using files...

[Ben]

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MarcoMauri wrote:

Datasocket, TCP/IP, UDP or Shared Variables aren't ok?

Moreover they are faster then using files...

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I have to side with Marco on this suggestion.

Ben

[DanX]

I only have limited experience with shared variables, datasockets, etc. I knew there was probably an easy solution. I will check it out the examples. Thanks.

[DFGray]

Network shared variables would probably be the easiest way to go, followed by datasockets.  However, neither offer a good way to synchronize the data, so you can create race conditions if you are not very careful.  It this is a problem, use TCP/IP.  For raw speed, UDP is probably your best bet, and can be made synchronous.  All are network protocols, so will work on multiple machines as well as a single machine.