Among existent Industrial Ethernet systems, Modbus-TCP has step by step become a standard for industrial communication via Ethernet as a result of its open, easy-to-understand and stable specification, readily available base technology and the wide ranges of devices which are already available. 在现存的多种工业以太网系统中,Modbus-TCP以其开放、易于理解和稳定的性能,加之易于使用的技术和广泛的应用,已逐步成为通过以太网进行工业通信的标准。
This thesis analyses the primary work content of metro ethernet forum on four key broad areas of technical development work. Then, analyses and summarizes the latest products and the key technical contents of MEF in the aspect of the technical specification of MEN. 本文对城域以太网论坛的主要工作按区域分类进行了分析,并对其在制定MEN的技术规范方面的最新成果和关键技术内容进行了概要性的分析、总结。
The solution for connecting the 16/ 32 bit micro-controller and tidy TCP/ IP protocol stack in Ethernet, which are selected according to the specification of the device, is described in detail in this thesis. 论文详述了根据系统设备特点采用的16/32位高性能单片机加精简TCP/IP协议栈接入以太网的方案。
Following the developing trend of OPC, Modbus-TCP Ethernet is chosen as the research direction of this thesis, and an OPC DA ( Data Access) Server, which is based on Modbus-TCP Ethernet and accords with OPC specification 2.0, is developed as a result. 本课题正是顺应这一技术潮流,选择目前影响最为广泛的Modbus-TCP工业以太网作为突破口进行研究,进而开发出符合OPC2.0规范的基于Modbus-TCP工业以太网的OPC数据存取服务器。
In this research, the premise of the system design is understanding of Ethernet MAC protocol and PCI bus specification. 对以太网MAC协议和PCI总线协议的理解和分析是进行以太网MAC控制器设计的前提,而对以太网MAC控制器体系结构的分析和功能模块的划分则是系统设计的关键。
Especially, this paper presents the design and realization of dual-channal ethernet adapter based on PC/ 104 bus specification and its corresponding driver. 提出基于PC/104总线规范的双芯片网卡及其配套驱动程序的设计与实现。
Implementing an OPC DA Server that is based on Modbus-TCP Ethernet and accords with OPC specification 2.0. There is no same kind of commercial production in our country presently. 实现了符合OPC2.0规范的基于Modbus-TCP工业以太网的OPC数据存取服务器,目前国内还没有实现该功能的商业产品。
The transmission rate of LANs based on Ethernet protocol is quickly upgrading to 1 Gbit/ s and 10 Gbit/ s. The demand on the fiber specification will become more stringent. 按照以太网协议建设的光纤局域网的传输速率正迅速升级到1Gbit/s和10Gbit/s,这对光纤提出了更高的要求。
Industry Ethernet is the development trend in current control net, but it also has some questions, one of them is the specification of a standard application protocol for industrial automation. 工业以太网是当前控制网络的发展趋势,但它也存在着一些问题,其中一个便是工业自动化统一的应用规范。