URGENT HELP NEEDED - Is it possible to create an I-V Characteristic Chart (Photovoltaic) using version 8.2

[4BedroomswithLabviews]

We are students trying to replicate the output of a photovoltaic cell. We have developed our LabView software to read

both current and voltage across a load but we are not sure how to chart both these real time values. We have found a

NI link  http://zone.ni.com/devzone/cda/tut/p/id/7230  which would be perfect but we only have access to LabView version 8.2.

Any help on trying to achieve similar charts using 8.2 would exetremely appreciated. 

[altenbach]

You can use the xy graph from the express palette.

It will also place the "built XY graph" express VI that will act as a history buffer if you configure it not to clear data on each call (double-click to change).

See how far you get. Good luck!

[4BedroomswithLabviews]

Thanks Heaps.....

We have another question..... We have a integer value(dial position) that we want to use in another VI... could you explain how this is possibleplease

[altenbach]

Sorry, you should be a bit more specific. What do you mean by "use"? Can you give an example?

• If you want to call the subVI with the dial position as a parameter, just make a connector for it.
• If you want to read the dial position from within the subVI, make a connector for a reference to the control and read the value in the subVI via a value property.
• ....

[4BedroomswithLabviews]

Hi,

Thanks again for the quick reply. We have just posted a more thorough explaination in another post if you could have a look at that one. The VI's are attached.