Writing and Reading Fields in an Executable

[Johnnyaxe]

Hi there,

I would like to run a small (freeware) program within labview (this program calculates density given pressure and temperature of steam). Using Windows this is really simple; I run the program, click on the temperature field, enter the value, click on the pressure field, enter the value, and press OK. The density is then displayed in another field, I read that then close the program.

What I want to do is make this whole process automatic using Labview (I want to send two numbers to a subvi and then I want it to output the resulting number) How do I do this?

Thanks,

John A.

(Labview 6.1)

[K C]

Hello John,

From what your are saying I expect that you cannot communicate with this freeware program (Or do you have documentation of a DLL or ??)

Is it not possible to communicate directly to what ever device you use or does the program only performs the calculation?

[bdarroux]

Hi John,

I think you should find documentation about your program starting: it is maybe possible that you run your program with parameter like:

c:\> name_of_the_program [option1] [option2]

where option 1 and 2 is temperature and pression. The program may return the result of your operation.

But I think that a freeware does not do this...

Sincerely,

BD.