可编程控制器(PLC)具有如下特点
(1) PLC是 种专用于工业顺序控制的微机系统。
(2) PLC是专为在恶劣的工业环境下使用而设计的,所以具有很强的抗干扰能力。
(3) 结构紧凑、体积小,很容易装入机床内部或电气箱内,便于实现动作复杂的控制逻辑和数控机床的机电 体化。
(4) 采用梯形图编程方式。
(5) PLC可与编程器、个人计算机等连接,可以很方便地实现程序的显示、编辑、诊断、存储和传送等操作。
PLC的产品很多,型号规格也不统 ,可以从结构、原理、规模等方面分类。从数控机床应用的角度分,可编程控制器可分为两类: 类是CNC的生产厂家将数控装置(CNC)和PLC综合起来而设计的“内装型”(Build—inType)PLC;另 类是专业的PLC生产厂家的产品,它们的输入/输出信号接口技术规范、输入/输出点数、程序存储容量以及运算和控制功能均能满足数控机床的控制要求,称为“独立型”(Sand—alone Type)PLC。
★ 公司名:厦门兴锐嘉进出口有限公司
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