供应6ES7340-1CH02-0AE0;
6ES7340-1CH02-0AE0。
工业4.0时代,企业数字化转型与智能制造成大势,自动化水平的日益提高,工业互联网的迅速发展交织着IT(信息技术)、OT(运营技术)与CT(通讯技术)三条主线的加速融合。可编程逻辑控制器(PLC)作为OT以及工业自动化关键设备以及工业互联网底层的重要组件,也随之得到了巨大的进步。同时,由于设备、机器和工厂变得“更智能”,工业现场控制对PLC以及DCS等设备提出了更高的要求。
智造“先行兵”,PLC助力工业控制实现自动化
众所知周,PLC 是在传统的顺序控制器的基础上引入了微电子技术、计算机技术、自动控制技术和通讯技术而形成的新一代工业控制装置,目的是用来取代继电器、执行逻辑、计时计数等顺序控制功能,建立柔性的编程控制系统。目前,PLC 在传统功能的基础上增加了模拟量运算、PID 功能、通信功能以及更可靠的工业抗干扰技术等功能,广泛应用于工业生产的各个领域。
因此PLC可简单理解为一种用于特定工业环境下的计算机,并具备多种优良性能,其硬件结构与计算机基本相同,具备CPU、I/O 模块、电源模块、底板、外设以及通信联网设备,采用了可编程的存储器对逻辑运算、顺序控制、计时计数和算数运算进行存储,并通过数字的、模拟的输入输出指令控制各种类型的工业生产过程。与通用的计算机相比,PLC 在工业领域的使用场景多、适应面广,并具备可靠性高、抗干扰能力强和编程简单等优点。

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