Hltnc servo motor

Can i use this ac servo motor for 
building my mini diy linux ethercat CNC?
 

Almost certainly, provided it is capable of accepting either analog velocity or torque commands, or digital positioning commands (step/dir or quadrature.) or can do EtherCAT.

That particular drive (80 AST ...) does not seem to be EtherCAT
but they may have an EtherCAT model.