PLC在机床控制方面与传统的继电器控制系统相比，具有可靠性高、体积小、功耗低、维护简单、开发周期短、价格低等特点。
Compared with relay in controlling lathes, PLC has some advantages such as high reliability, low consumption, small volume, easy maintenance, short developing circle, low price and so on.
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