how to compare value before and after

[tadhika]

hi,

one of the queried Values ​​is the number of defective frames.Here, this value is compared with a previously sampled value

If now (after 10 s) this value is bigger than previous one ,then It saves new value otherwise loop will be continue.If again after (10s) the new value is bigger than  previous  new value then again saves this new point.how can i comapre value before and after?thanks.

Tadhika

[nyc_(is_out_of_here)]

shfit register

[tadhika]

how can i use shiftregister for this??can u give me more hint??

[smercurio_fc]

Do you know what a shift register is? It preserves a value from one loop iteration to the next. Please read the LabVIEW Help on shift registers. There's is also a simple example that ships with LabVIEW that will give you the basic idea (Help -> Find Examples).

You can also use a Feedback Node in lieu of a shift register. Same concept, different implementation.