Questions: licenses and have the availability of the DSC module

Hello

I transferred to another PC development project. When I opened it, some of my shared network variables (NSV) have been marked with errors of functionality: "Initial value: not allowed or can not be changed outside of LabVIEW.". I found out it's because I didn't install the DSC Module on the newer machine. removal of the function 'initial value' made the error message disappear.

That the error itself was not a big deal, but it made me think and study. http://www.NI.com/white-paper/4679/en says:

If you want to use the LabVIEW DSC Module features, you must host variables shared on Windows. The LabVIEW DSC Module adds the following features to network-has published the shared variables:

· History by connecting to the database OR Citadel.

· Network alarms and alarm logging.

· Scaling.

· The user-based security.

· Initial value.

· The ability to create custom I/O servers.

· Integration of the LabVIEW event structure with the shared variable.

· LabVIEW VIs for programmatically control all aspects of the shared variables and the shared variable engine.

Question 1

I didn't know that the initial value function was part of the DSC Module. If I use it in a project, means that my client needs to buy a DSC run-time license? (I don't use another function DSC)

Question 2

In my project, the NSV in question was hosted on a target of cRIO, yet my prototype (which had an initial value enabled) was happily running without problems. This contradicts the above documentation that says «you must host variables shared on Windows» Should it?

Question 3

I created a new NSV on my new machine (which has not installed a DSC). I saw the option of "Graduation". Is scaling part of the DSC module or not?

Question 4

Initial value and the scale are generic features, not related to the control of monitoring/recording of data. Why are they in the DSC Module? They do not in the motor base of the OAS?

Hello

1 Yes, whole generation using DSC features require a run-time license.

2. This is a recommendation for more reliable operations.

3. No, it's a native capacity of LabVIEW. DSC module adds just more features related to communication protocols, alarming, etc.

4 development, Yes. Scaling, no I think is for easy access. Old school method is shown in here to the section 'initialize Variables shared your»

Visit this pagefor more information on DSC.

Tags: NI Software

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