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近年来，在计算机开放系统结构的带动下，人们提出了开放式现场总线的要求，并称之为现场总线网络（Fieldbus）。本文介绍了多种现场总线协议及其应用前景。
In recent years, driven by the open system architecture of computers, people have put forward the requirement of open field bus and called it Fieldbus. This article describes a variety of fieldbus protocols and their application prospects.