钻床钻孔程序设计自动钻床控制系统PLC控制要求：
1）按下启动按钮，系统进入启动状态。
2）工作台旋转到位后，夹紧装置开始夹工件，一直到夹紧限位开关闭合为止。
3）工件夹紧后，主轴电机开始向下运动，一直运动到工作位置（由下限位开关控制）。(Drilling machine drilling program design automatic drilling machine control system PLC control requirements:
1) press the start button to start the system.
2) after the worktable is rotated in place, the clamping device starts clamping the workpiece until the clamping limit switch closes.
3) after clamping the workpiece, the spindle motor starts to move downward and moves to the working position (controlled by the lower limit switch).)