现场总线是一种串行的数字数据通信链路，它沟通了生产领域的基本控制过程之间以及与更高层次控制过程的自动化控制设备之间的联系。

Field bus is a kind of serial digital data communication chain way, it links up to basically control in production field and high levels control course in the automation's control equipment.

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现场总线是一种串行数据通信链路，是连接智能现场设备和自动化系统的一种通信网络。

Field-bus is a kind of serial link for data communication, or a kind of communication network for connecting intelligent field-bus equipments with automatic system.

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