The presence of fieldbus changes the system framework formed by the traditional field instruments . they have promoted the development of the industrial control systems greatly 它的出现使基于传统的现场仪表构成的工业控制系统的体系结构发生了根本性变革。
Participate in installation , commissioning and putting - in - service proactively on the stage of construction and production preparation , to ensure all units start up smoothly 在安装施工和生产准备阶段，积极参与现场仪表设备的安装、调试、投用，确保装置顺利开车投产。
As the equipment producer ( field bus instruments and devices ) , which approach should we have regarding the development in order for the devices to meet the technical requirements and demands of profibus 作为设备（即现场仪表仪器）生产商可以通过怎样的开发过程，使设备满足profibus的总线技术要求？
Field bus is a kind of communication networks , which is used in automatic related fields , i . e . manufactory automation , process automation , building automation , and so on 现场总线应用于过程自动化、制造自动化、楼宇自动化底层的现场设备或现场仪表互连的通信网络，是现场通信网络与控制系统的集成。
If there is confliction between the accuracy of instruments listed below and the possible higher accuracy , the accuracy of field instruments may be match the latest higher accuracy according to quotation 如下述的仪表精度与可能达到的较高精度不一致，现场仪表的精度可据实际情况与最近的较高精度相匹配。
In other words , they act as a hart master which is responsible for adjusting parameters of the slave , changing the slave ' s running mode , diagnosing the slave ' s faults and asking response with special information 新的系统除保留了supmax500原有的功能以外，还增加了对现场仪表的参数调整、改变运行方式、故障诊断和信息反馈等仪表管理的功能。
A pressure transmitters is a locale meter applied to measure the flow , differential pressure , pressure , liquid level , density and so on , of the liquid in procedure , which is an important component of automated process detection and control system in sequential procedure 压力变送器是用来检测生产过程运行中流体的流量、差压、压力、液位、密度等参数的现场仪表，是连续生产过程自动化中过程检测和控制系统的重要组成部分。
The whole system is made up with upper computer , plc , field instruments , sensors and execution units . the automatic control system of daily sewage processing unit on ship can be accomplished well by the powerful function in da ta acquisition , communication and control of plc 整个控制系统由上位机、 plc 、各现场仪表、传感器以及各种执行机构组成，通过plc强大的数据采集、通讯以及控制功能，使整个生活污水处理系统的自动控制能够得到良好实现。
There is a quite many means to integrate fieldbus technology into dcs , while this design emphasizes particularly on providing communication ability between operator station and field instruments , the same time reserving the advanced control and monitor function of the original dcs 然而将现场总线与dcs进行集成的方法有多种，侧重点也各有不同。本设计则着重解决在保留原有控制系统丰富的监测、控制、协调管理功能的基础上，如何实现上位机与现场仪表通信的问题。
The embedded instrument can communicate with host the by the interface of bluetooth which can solve the difficulty of using the cable in this area and avoid the high error code rate . in the paper , we select the tms320vc54x dsp and the ericsson bluetooth module , on the basis of rfcomm , developing a embedded instrument 2 、针对发电厂内环境恶劣生产区域的特殊要求，设计了带有蓝牙通信功能的嵌入式工业仪器仪表，使得现场仪表能够通过蓝牙接口与工控机进行通信，从而解决此区域中铺设线缆困难以及其它通信方式信息传输误码率高等不足。
