The black database sever is a computer system without HMI (human and machine interface) and it runs in the field. State data are stored and managed in the black database server automatically.

盲数据库服务器是一种工作在现场的没有人机交互界面的计算机系统，实现状态数据在现场存储和管理。

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The task controller and HMI, which are both important modules of CNC system, constitute the CNC system of this paper, adding on motion controller, PLC controller and server module.

任务控制器和人机界面是数控系统的重要模块，它们与运动控制器、PLC控制器及远程服务模块共同构成了本文中的数控系统。

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