福建宇创自动化设备有限公司

厦门宇创自动化设备有限公司位于经济特区福建省厦门市，是一家集生产加工、经销批发为一体、经国家相关部门批准注册的企业。以诚信经营和薄利多销的原则，赢得了广大客户的信任，热诚欢迎各界朋友前来参观、考察、洽谈业务。 
模块：DCS系统所有I/O模块都带有CPU，可以实现对采集及输出信号品质判断与标量变换，故障带电插拔，随机更换。而PLC模块只是简单电气转换单元，没有智能芯片，故障后相应单元全部瘫痪。 
我们不得不从PLC和DCS的起源谈起：PLC的发展基于制造业的现场控制需求，DCS大发展基于化工行业的连续过程控制和监控。从控制需求分类看，控制系统可分成：顺序控制（PLC的基本功能）、过程控制（DCS）、位置控制（CNC）、传动控制（调速或同步），但从发展的角度来看，这几部分控制方式在渐渐融合。如果非要说出不同来，我认为有如下几点： 
1、面向对象不同：PLC面向一般工控制领域，通用性强。DCS偏重过程控制，用于化工行业。 
2、DCS强调连续过程控制的精度，可实现PID、前馈、串级、多级、模糊、自适应等复杂控制，一般PLC仅具有PID功能，控制精度不如DCS高。
3、DCS系统具有功能强大的SCAND软件包，具有配方功能，并针对不同行开发了专家软件（化工工艺参数配置和控制算法），比PLC应用方便。联系人：苏宝珠电话：18050108292 
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