Reading same data that I write on serial Device. Is i normal ?

I'm trying to communicate with a telescope mount with a serial communication.

Sending the command 'E', the device should respond with its current coordinates.

My very simple code:

clear all;
    Mount = serial('COM10');
    fopen(Mount);
    fprintf(Mount,'E');
    out=fscanf(Mount)
    fclose(Mount)

I get this ouput: 'E

'

Did i wrote something wrong ?