As far as I know, the zero of the Fermi Energy is not important, but once it is 
taken then all the energies of the calculation are relative to this value.
The Ecut value is relative to the ionization energy of the individual atoms.

________________________________________
De: wien-boun...@zeus.theochem.tuwien.ac.at 
<wien-boun...@zeus.theochem.tuwien.ac.at> en nombre de Ридный Ярослав 
Максимович <yaros...@physics.susu.ac.ru>
Enviado: lunes, 20 de abril de 2015 07:46 a. m.
Para: wien@zeus.theochem.tuwien.ac.at
Asunto: [Wien] Fermi level

Hello, I have calculated the Fermi level
:FER  : F E R M I - ENERGY(TETRAH.M.)=   0.78830
Fermi level = 0,7883 Ry
Relative to what is taken to zero in the program?


And another question
When we write Ecut=-7.0
We cut the levels below -7.0 Ry relative to some zero.
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