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现场总线是电子、仪器仪表、数字技术、计算机技术、网络技术和控制技术等多项技术的最新成果。使得现场仪表之间、现场仪表与控制室设备之间构成网络互联系统。实现全数字化、双向多变量数字通信。为整个监探系统全数字化奠定了基础。目前有几种总线技术逐步成熟,并在一些应用领域形成了自己的优势。如FF(Foundation fieldbus)基金会现场总线;LONWORKS总线;PROFIBUS总线;CAN总线;HART总线等。
Fieldbus is the latest achievements of a number of technologies such as electronics, instrumentation, digital technology, computer technology, network technology and control technology. Making the scene between the instruments, field instrumentation and control room equipment form a network interconnection system. To achieve full digital, two-way multivariate digital communications. The whole monitoring system for the entire digital laid the foundation. There are several bus technologies that are maturing and have built their own strengths in a few applications. Such as FF (Foundation fieldbus) Foundation Fieldbus; LONWORKS bus; PROFIBUS bus; CAN bus; HART bus.