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The nodes in the network can communicate and exchange information directly or indirectly.

Networking and communication are meeting the needs of today’s Computer Integrated Manufacturing System(CIMS)and the development of intelligent factories.It can make industrial control from point(Point),to line(Line)to plane(Aero),so that equipment-level control,production line control,factory management control into a whole,and then can create higher Benefit.This infinitely bright future has become more and more clearly displayed in front of our generation.

With the development of smart factories and the Internet of Things,the fields of joint control of factory equipment,data interaction between PLC and host computers and other smart products,and big data applications will greatly promote the close integration of traditional automation and network technology.Realize the sublimation from big to strong,PLC application technology will have greater development.

网间的结点可直接或间接地通讯、交换信息。

联网、通讯，正适应了当今计算机集成制造系统（CIMS）及智能化工厂发展的需要。它可使工业控制从点（Point）、到线（（Line）再到面（Aero），使设备级的控制、生产线的控制、工厂管理层的控制连成一个整体，进而可创造更高的效益。这个无限美好的前景，已越来越清楚地展现在我们这一代人的面前。

随着智能工厂以及物联网的发展，工厂设备联控、PLC与上位机及其他智能产品的数据交互、大数据应用等领域，将大大推动传统自动化与网络技术的密切结合，随着中国制造业实现由大变强的升华，PLC应用技术将出现更大的发展。