Hi @ManuelDif90
The 310’s transponder should be functional.
It’s located just to the right of the pilot’s comm selector on the center console. You should be able to select a view to give you access to that area, and then just use the large/small twist dials in the center of the transponder to set the squawk code. You also need to set to the left of the dials from “standby” to “Xpdr” when you want to activate it. The ident button is just to the right
and below the code dial button.
P.S. don’t put the code in I’ve got there in the screenshot! 
Regards
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