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现场总线是用于过程控制现场仪表与控制室之间的一个标准的、开放的、双向的多站数字通信系统。它与工厂现场设备直接连接,一方面将现场设备互联为通信网络,实现不同网段、不同现场通信设备的信息共享;另一方面又将现场运行的各种信号传到远离现场的控制室,并进一步与操作终端
Fieldbus is a standard, open, two-way, multi-station digital communication system used between process control field instruments and control rooms. It is directly connected with the factory site equipment, on the one hand the site equipment interconnection for the communication network, to achieve different network segments, different field communication equipment information sharing; the other hand, the scene will run a variety of signals to remote control room, And further with the operation of the terminal