基于被控A模式下的新型LON总线网关节点  

A New Type of LON Bus Gateway Node Based on Slave A Mode

作　　者：张强[1] 

机构地区：[1]淮安市计量测试所,江苏淮安223003

出　　处：《中国仪器仪表》2014年第4期47-50,共4页China Instrumentation

基　　金：2012年淮安市科技支撑计划项目(编号:SN12052);2013年淮安市创新载体平台建设计划项目(编号:HAP201313)

摘　　要：为实现RS485集散式控制系统与LON现场总线控制系统的无缝衔接,设计一种新型LON总线网关节点。该网关节点在基于STC12C5A60S2与TMPN3150双内核框架结构下,利用STC12C5A60S2与TMPN3150之间的被控A模式的并行接口,实现LON技术协议与RS485标准协议的信息交互,两者的信息交互遵循虚拟令牌的传输机制,保证了两内核核之间数据交换的准确性和实时性。实践表明:网关节点性能良好。In order to realize the seamless connection of distributed control system of RS485 and fieldbus control system of LON, a new gateway node of LON bus has been designed. The gateway node based on double kernel framework constituted of STC12C5A60S2 and TMPN3150 can realize information interaction between LON protocol and RS485 protocol using slave A parallel interface. Information interaction between STC12C5A60S2 and TMPN3150 can follow the transmission mechanism of virtual token to ensure that the dual core can exchange data accuracyly and real-timely. Practice shows that： the gateway nodes have good performance.

关 键 词：LON总线 RS485 网关节点 被控A模式 双核 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]