将PLC 级式编程技术运用于液压纵横油缸进给加工系统,使控制软件与工序动作有较好的对应关系,编程和调试效率高。与梯形图相比,软件语句少,扫描时间短,实时性较强。 关键词:PLC;级式编程技术;控制系统 Abstract: PLC stage programming technology is an advanced regular design for design of PLC ladder diagram. It is proved by experiment that the stage programming method makes the PLC control software have a good corresponding relationship with the working sequences of hydraulic-pressure and landscape orientation machinable, and makes the programming and debugging work more efficiently. Compared with the ladder programming method, the software edited by this method has less sentences, little scanning time and higher effective performance on real-time control. Key words: PLC; stage programming technology; control system