IC693PCM311LT

IC693PCM311LT PLC的应用领域

目前，PLC在国内外已广泛应用于钢铁、石油、化工、电力、建材、机械制造、汽车、轻纺、交通运输、环保及文化娱乐等各个行业，使用情况大致可归纳为如下几类。

（1）开关量的逻辑控制

这是PLC基本，也是广泛的应用领域，它取代了传统的继电器电路，实现逻辑控制、顺序控制；既可用于单台设备的控制，也可用于多机群控及自动化流水线，如注塑机、印刷机、订书机械、组合机床、磨床、包装生产线及电镀流水线等。

（2）模拟量控制

在工业生产过程当中，有许多连续变化的量，如温度、压力、流量、液位和速度等都是模拟量。为了使PLC处理模拟量，实现模拟量和数字量之间的A/D转换及D/A转换。PLC厂家都生产配套的A/D和D/A转换模块，使PLC用于模拟量控制。

（3）运动控制

PLC可以用于圆周运动或直线运动的控制。从控制机构配置来说，早期直接用于开关量I/O模块连接位置传感器和执行机构，现在一般使用运动控制模块，可驱动步进电机或伺服电机的单轴或多轴位置控制模块。各主要PLC生产厂家的产品几乎都具有运动控制功能，广泛用于各种机械、机床、机器人、电梯等场合。

IC693PCM311LT

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IC693PCM311LT