第四次工业革命旨在创建“智能”植物和工厂，重点是工业4.0（RAMI4.0）的德国参考体系结构模型所暗示的通信。随着工业自动化行业朝着实现“联系世界”的发展，领先的行业组织正在联手利用各自的技术优势。
Since 2011, the FDT Group and OPC Foundation have worked together on a technology initiative to provide greater access to critical information throughout the industrial enterprise. OPC provides a uniform interface for many different client applications, whereas FDT®provides network/device configuration and access to devices.
FDT和OPC技术一起简化了向工业设施的下一代连接性的过渡。由FDT-OPC UA设备信息模型定义，最近宣布的FDT/OPC附件增强了网络和设备的配置，并使企业对数据的访问无需特定于协议的处理即可。
协作历史
FDT集团与OPC基金会之间的技术合作旨在确保自动化系统，资产管理系统以及其他工厂和企业系统和应用程序之间的无缝在线数据交换。由于这项工作，自动化最终用户将能够利用FDT和部署OPC UA信息建模和相应的服务的应用程序和设备来利用数据和信息模型，以实现强大的应用程序对设备集成。
图1shows a simplified illustration of the two technologies arranged in the RAMI4.0 model. The provision of an OPC UA interface allows access to the device data from higher-level systems.
随着FDT/OPC附件的发布，传感器到云，企业范围内的连接将通过无缝的数据通信授予。该目标是一种完全启用的工业互联网（IIOT）体系结构，支持移动性，界线安全性和全面的互操作性。该解决方案还将独立于平台，可在独立，客户端/服务器或云体系结构中部署。
Working group uses cases
A joint working group of the FDT Group and OPC Foundation was established to determine the FDT/OPC UA interface specifications. This project envisioned a standard plug-in for the latest version of the FDT standard that would provide the necessary connectivity to enable data to be communicated throughout the enterprise using the OPC UA standard.
为此目的定义了以下用例：
- 访问拓扑信息
- 提供设备标识数据
- 读取设备数据（参数和属性）
- Access to device status
- 评估设备诊断
相应的FDT和OPC模型为规范提供了起点。对于FDT，由设备类型Manager™（DTM™）提供信息。除了有关DTM和设备的信息外，还描述了设备和过程数据。DTM的“功能信息”描述了为设备提供的功能（例如，用于配置和诊断/维护）。也可能引用设备文档，例如手册，证书或设备描述（见图2）。
The "OPC UA for Devices" specification is the starting point for the OPC UA information model. This is an additional specification based on the basic OPC UA specifications like extension of base objects. It defines the device model, describing the device communication model and the model for device integration into a host.
设备模型标识设备的对象。这包括设备参数，可可的方法，用于设备识别的信息，支持的通信协议等。设备通信模型指定描述通信拓扑所需的对象。这些是网络（协议类型）和连接点（设备连接和网络，网络地址）对象。主机集成的模型描述了可以在服务器中访问的组件（主机）。主机可以通过任何类型的通信访问自动化系统。启用FDT的系统（例如PLC，DCS，资产管理应用程序，独立工程应用程序）是此类主机的一个示例。
After identifying the corresponding objects in various models, the FDT/OPC working group prepared an illustration of the FDT information for the OPC UA objects. In some places, the device model has been expanded with OPC UA to take account of specific FDT information.
Once the specification was completed, prototyping was performed to check the defined use case models. The first step involved using a UA modelling tool to specify and test the data types. In the second step, an OPC UA server was implemented with FDT integration. A client was also created for the test. Figure 3 shows the architecture of the system.
The OPC UA server is part of the FDT/FRAME™-enabled system application. The information model for the OPC UA server is generated automatically within the FDT/FRAME Application data. The server can be accessed with any OPC UA client via a secure connection. The client is flexible and versatile, and can be integrated in other systems or run on a mobile device, depending on the intended application.
摘要和前景
内置的力量和多功能性开放FDT standard allows for backwards and forward adaption of technologies as they evolve to fit future automation needs across the process, hybrid and factory market spaces. FDT is the solution, unmatched in the industry today, offering a single system solution for device management for all communication protocols and networks, and allowing access to devices via ”tunnelling” throughout the bus hierarchies. Uniting FDT and OPC provides the ideal bridge to systems that demand data from these devices and opens the door to Industrie 4.0.
随着本月FDT/OPC UA附件的发布，FDT集团朝着帮助工业最终用户实现IIOT和Industrie 4.0的承诺“连接世界”迈出了重要的一步。确实，它正在为整个工业部门的企业范围内，传感器到云的互操作性和增强生命周期管理打开了大门
This article is part 7 of an 8 part series discussing FDT in Factory Automation. Below are the links to review the other published articles.
Article 4 – New DTM Interface Simplifies PLC Programming
Article 5 – Fieldbus and Device Diagnostics
Article 6 – Simplifying Strategies for Effective DTM
Article 7 - With FDT and OPC UA Towards Industrie 4.0
第8条 - 寻找最后一篇文章，使用FDT的工业互联网的工程，配置和诊断在下一期Device Integration Strategies.
作者：
Manfred Brill，软件治理高级经理
Schneider Electric Automation GmbH & FDT Group Member
咨询主管弗兰克·施密德（Frank Schmid）
M＆M软件GmbH＆FDT Group成员
