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现场总线技术是一种可以进行多讯号通讯的单线多站系统，它可以降低控制系统各阶段在安装、操作及维护等方面的费用。本文介绍了这种系统的构成、应用以及对比目前沿用的4—20毫安模拟通讯系统所显示出的优越性。
Fieldbus technology is a single-wire, multi-station system capable of multi-signal communication that reduces the cost of installation, operation, and maintenance for all phases of the control system. This article describes the composition of this system, its application, and comparison with the current 4-20 mA analog communication system shown by the superiority.