文章介绍了SIEMENS S5-135可编程控制器在南钢高线飞剪控制系统中的应用，对系统组成、功能及软件的构成作了简要的阐述。
This paper introduces the application of programming controller SIEMENS S5-135U in shear control system of NGGX and describes the composition and function of the system and its software architecture.
速度显示部分采用LCD显示， 因而节省了所需单片机的口线和外围器件， 同时也简化了显示部分的软件编程。
Speed shows part adopts LCD display, thereby saving the required microcontroller mouth lines and peripheral equipments, simultaneously also simplifies shows part of the software programming.
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