Get Analog Output Value

Greetings URCommunity,
I would like to know if it is possible to get the value in frequency/current/tension of an analog output. I have found how to get feedback value of an digital output but I was unable to find something similar to an analog one.
Any help is much appreciated.
Best regards,
Pedro Monforte

I should have mentioned this in the first post. I know I can get the value through get_analog_out(), but I wanted to know if it is possible to get this value in real-time