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美国自动化研究公司(ARC)公布的研究报告“器件和现场网络的全世界展望——市场分析和到2003年的预测”预测 Ethernet 为基的网络扩展到现场总线网络的展望。在现场器件级(传感器和执行器层)中采纳Ethernet 的障碍是价格,在 Ethernet 接口取用功率和网络的性质,研究报告指出,目前 Ethernet 连接到现场器件级的价格高于任一种现有的传感器———执行器总线,但低于现场级的总线。ARC 认为,在总的性能方面,Ethernet 比任一
A report published by the American Institute of Automation (ARC) “Worldwide Outlook for Devices and Field Networks - Market Analysis and Forecasts by 2003” predicts the expansion of Ethernet-based networks into fieldbus networks. The barriers to adopting Ethernet at the field device level (sensor and actuator layers) are price, access to power and the nature of the network over the Ethernet interface, and the study reports that the current Ethernet connection to the field device level is more expensive than either existing The sensor --- actuator bus, but lower than the field level bus. ARC believes that in terms of overall performance, Ethernet is better than either