基于Modbus协议的工控设备数据虚拟化系统  

Data virtualization system of industrial control equipment based on Modbus protocol

作　　者：许春林 曾培峰[1] XU Chunlin;ZENG Peifeng(College of Computer Science and Technology,Donghua University,Shanghai 201620,China)

机构地区：[1]东华大学计算机科学与技术学院,上海201620

出　　处：《智能计算机与应用》2024年第6期163-168,共6页Intelligent Computer and Applications

摘　　要：针对工业控制现场网络不同设备的多链路通信数据传输问题,本文提出了一种基于Modbus协议的工控设备数据虚拟化方案。通过虚拟数据中心以及物理链路虚拟化、内外网的数据映射这两层虚拟化,实现主控机对现场网络内不同链路设备数据的统一流转与传输。该方案解决了不同链路数据传输的介质差异带来的协议变体问题,同时解决Modbus协议对于多字节类型数据难以区分的问题。在不改变原有协议标准的基础上增强了Modbus协议的数据表述能力,使得不同类型的数据能够在总线上灵活传输;对总线外部的数据访问请求提供统一的接口,降低了现场网络设备部署与维护的成本。Aiming at solving the problem of multi-link communication data transmission between different devices in the industrial control network,a data virtualization method based on the Modbus protocol is proposed for the devices.This method is realized through virtual data center and two layers of virtualization including physical link virtualization and data mapping of internal and external networks.The master device transfers data among different devices in the unified manner in the research.This solution solves the problem of protocol variation caused by the media differences in data transmission in different links.Meanwhile,by enhancing the Modbus protocol without changing the original protocol standard,it also solves the problem for Modbus protocol to distinguish multi-byte data.The new data expression enables different types of data to be flexibly transmitted on the bus and the unified interface could be provided for data access requests outside the bus.Therefore,the proposal reduces the cost for field network device deployment and maintenance.

关 键 词：Modbus设备虚拟化 虚拟数据中心 多链路数据传输 数据映射 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]