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.
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.
它是一种有效的支持分布式控制或者实时控制的串行通信网络。
It is a kind of effective serial communication network which supports distributed control or real-time control.
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