现场总线技术具有丰富的内涵，涉及到智能仪表技术、网络通信技术、实时控制技术、集成电路技术和计算机技术等诸多领域。
The field bus technique relates to several fields of intelligent instrument, network communications, real-time control, integrated circuit technique and computer technology etc.
在上位机监控系统中，主要完成的是对通信设置的选择控制、现场采集数据的实时刷新显示等。
In host computer control system, mainly achieve choice of serial communication control, the collection of real-time data updating display and historical data charts analysis.
作为现场总线的CAN，是一种开放式互联网络，用以支持多主实时、分布式控制串行通信。
CAN used as the field bus is an opening network for supporting a multiple-master real-time and distributed controlling serial communication.
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