基于国产FPGA的PLC内部通信协议  

作　　者：迟继锋 余泳 王永锋[2] 李从飞 

机构地区：[1]中国华电集团科技信息部,北京100031 [2]国电南京自动化股份有限公司,南京210032

出　　处：《科技创新与应用》2023年第11期42-45,共4页Technology Innovation and Application

摘　　要：针对目前国内PLC大量采用国外通信协议进行内部数据交互的现状,该文提出一种基于FPGA的PLC内部通信协议,底板内从站并行通信,底板间环网串行通信,在实现所有模块可靠通信的同时,提高数据传输效率,固定模块间通信延时,同时支持多主站冗余和从站主动通信,为实现PLC的彻底国产化提供底层技术支持。In view of the current situation that foreign communication protocols are widely used in domestic PLC for internal data exchange,this paper proposes a PLC internal communication protocol based on FPGA,which communicates in parallel between slave stations in the backplane and serial communication in the ring network between the backplane,which not only realizes reliable communication between all modules,but also improves data transmission efficiency,fixed communication delay between modules,and supports multi-master redundancy and slave active communication at the same time,so as to provide low-level technical support for the complete localization of PLC.

关 键 词：PLC FPGA 工业通信总线 时钟提取 串并融合 

分 类 号：U172.6[交通运输工程]