By drilling the first principle of understanding, and then the PLC hardware and software design.

首先通过对钻床工作原理的了解，然后对PLC的硬件和软件进行设计。

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The specification of programmable controller, PLC hardware configuration, software design, programmer, operation mode and furnace purging flame detection and it principle are presented concretely.

具体介绍了可编程序控制器性能指标，PLC硬件配置，软件设计，编程器，操作方式以及炉膛吹扫，火焰检测及火检原理等。

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This paper presents application of PLC in a plate shearing machine control, and expounds the design the hardware and software of the system in detail.

介绍了可编程控制器(PL C)在自动剪板机控制中的应用，对系统的硬件和软件设计作了较为详细的阐述。

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