On the analysis of the characters and state-of-the-art, also the actuality of the current situations, the paper puts forward the Ethernet DNC system that faced to the serial numerical control machine, and the feasibility and predominance.

• 本文在分析DNC系统特点及其发展现状以及我国制造企业现状的基础上,提出了面向串行异构数控机床的以太网式DNC系统,分析了其可行性和优势。