How to hold data even closing the VI?

[ManuSpadim]

Hello guys.

I'm using a VI to measure the force applied to a load cell (strain gage). I wish I could calibrate it between defined periods, so I wish I could insert a data (the number I have to multiply the load cell voltage, wich one is in volts) in any moment, but I want that this number stay into the VI when I close it and than open it again. If possible, I would like to protect this data with a key.
Is it possible
Sorry for my bad english!

Hope you can help me!

Thank you!!

[ManuSpadim]

sorry, I meant:

Is it possible?

[P@Anand]

The simple way would be write the value to a file and then read it when you start the code.

[Ranjeet_Singh]

Best way to use all the VIs in one common file and pass the wanting value from 1 VI to other using global variable.

[Yamaeda · Accepted solution]

As Anand says, the easy way is to just write the data to a file, but then it wont be protected. You can write it as a registry key in which case it's somewhat protected by being somewhat hidden and you can easily make a password-vi to allow modification of this value.

/Y

[P@Anand]

Writing to registry is a good way to save the top level configuration parameters like Checksum values. But for the data still I would go for writing to file like binary files (Cannot be edited manually) so your file is protected to a level. If you want to increase the number of parameters you can still easily do it.

[Ranjeet_Singh]

There is absolutely no problem in using file but if labview has given you facility then why not use it, just saying    ?

[P@Anand]

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@Ranjeet_Singh wrote:

There is absolutely no problem in using file but if labview has given you facility then why not use it, just saying    ?

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I don't understand which facility you meant here. 🙂

[Ranjeet_Singh]

Read about global variable

[P@Anand]

Using a file and the registry key is different and global variable is different. Global varaible comes into play after reading from the file or reg key but the question here is to preserve the value somehwere even after closing the vi.