环形数控网络的实时通信协议设计

Design of Real Time Communication Protocol of Ringed CNC Network

如何实现控制单元与网络节点中数字伺服装置之间的数据通信是分布式数控网络的一个关键问题,即必须为控制单元和数字伺服装置配备合适的数字接口,实现设备之间高实时性高可靠性的周期性通信。本文讨论了一种基于光纤环形网络周期性通信协议的设计方法,并给出了其基于现场可编程门阵列(FPGA)的实现方式。

How to actualize the numerical communication between control units and numerical servo devices on the net is now a cru-cial problem in the network of distributed CNC(Computerized Numerical Control) system, that is, an appropriate numerical interface between control units and numerical servo devices must be needed, in order to actualize the highly real time and reliable communi-cation between devices. In this paper, a technique of designing a periodical communication protocol based on fiber ring is discussed...