分布式PLC系统数据通信方案的实践与探究

Practice and Exploration of Data Communication Scheme of Distributed PLC System

文章介绍了分布式PLC自动化控制系统的数据通信方案的设计与实践。方案采用以SIMATIC S7-1200 PLC系列CPU1214C为核心的硬件系统,通过编程完成对现场生产数据的采集、通信,实现了不同机架上同型号CPU之间的数据发送和接收,达到了小型PLC组网控制中大型生产系统的目的,为分布式PLC控制系统在开放化和网络化方面,进行了一次有意的探究。

This paper introduces the design and practice of data communication scheme in distributed automation control system based on SIMATIC S7-1200 PLC series CPU1214C.The scheme adopts the hardware system with the SIMATIC S7-1200 PLC series CPU1214C as the core,completes the collection and communication of on-site production data through programming,realizes the data transmission and reception between CPUs of the same type on different racks,and achieves a small PLC group.The purpose of the network control medium and large production system,an intentional exploration is carried out for the open and networked aspects of the distributed PLC control system.