利用优化的MODBUS协议实现分布式控制  

Distributed Controlling method using Refined Modbus Protocol

作　　者：聂文惠[1] 鞠时光[1] 王英杰[1] 阴晓加[1] 

机构地区：[1]江苏大学计算机科学与通讯工程学院,江苏镇江212013

出　　处：《微计算机信息》2010年第10期44-46,共3页Control & Automation

摘　　要：MODBUS协议是控制领域应用非常广泛的协议。对标准的MODBUS协议在多任务异步处理中的局限性进行了研究,并在此基础上提出了一种基于物理地址标记的异步MODBUS协议------a-MODBUS协议。该协议利用物理地址功能的相对确定性,进行报文级任务逻辑功能识别。基于此协议,提出了一种基于agent的任务调度模型,并且在工程实践中得到成功应用。In industrial Ethernet,we usually distribute the controlling tasks in different numerical control devices scattered in different nodes to fulfill a certain object.Task management is very important for above object.Communication protocol is the foundation of message exchange in networks.MODBUS protocol has become the de facto standard in industrial control region.Standard MODBUS protocol is mainly designed for Synchronous Communications and is unsuitable for multi-task asynchronous management in industrial Ethernet.We proposed an improved MODBUS protocol to solve such problems and have succeeded using this improved MODBUS protocol in multi-task asynchronous management in practice.

关 键 词：工业以太网 MODBUS协议 多代理 异步 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]