描述
YASKAWA-CPS-18FB
1968 年,美国最大的汽车制造商——通用汽车公司 (GM) 为了适应生产工艺不断更新的需要,要求寻找一种比继电器更可靠,功能更齐全,响应速度更快的新型工业控制器,并从用户角度提出了新一代控制器应具备的十大条件,立即引起了开发热潮。主要内容是: ①编程方便,可现场修改程序; ②维修方便,采用插件式结构; ③可靠性高于继电器控制装置; ④体积小于继电器控制盘; ⑤数据可直接送入管理计算机; ⑥成本可与继电器控制盘竞争; ⑦输入可为市电; ⑧输出可为市电,容量要求在 2A 以上,可直接驱动接触器等; ⑨扩展时原系统改变最少; ⑩用户存储器大于 4KB 。 这些条件实际上提出将继电器控制的简单易懂、使用方便、价格低的优点与计算机的功能完善、灵活性、通用性好的优点结合起来,将继电接触器控制的硬接线逻辑转变为计算机的软件逻辑编程的设想。 1969 年,美国数字设备公司 (DEC 公司 ) 研制出了第一台可编程控制器 PDP—14 ,在美国通用汽车公司的生产线上试用成功,并取得了满意的效果,可编程控制器自此诞生。 可编程控制器自问世以来 , 发展极为迅速。 1971 年,日本开始生产可编程控制器。 1973 年,欧洲开始生产可编程控制器。到现在,世界各国的一些著名的电气工厂几乎都在生产可编程控制器装置。可编程控制器已作为一个独立的工业设备被列入生产中,成为当代电控装置的主导。编程控制器的名称演变 从可编程控制器发展历史可知,可编程控制器功能不断变化,其名称演变经历了如下过程:早期产品名称为“ Programmable Logic Controller ”(可编程逻辑控制器),简称 PLC ,主要替代传统的继电接触控制系统。随着微处理器技术的发展,可编程控制器的功能也不断地增加,因而可编程逻辑控制器( PLC )不能描述其多功能的特点。 1980 年,美国电气制造商协会( NEMA )给他一个新的名称“ Programmable Controller ”,简称 PC 。
产品承诺:
保 证 全新原装进口,
保 证 安全准时发货,
保 证售后服务质量,
优势价格,大量现货。
主营DCS系统配件
机器人系统配件
大型伺服系统配件
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