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《Ordnance Industry Automation》 2004-03
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RS485 Bus Communication of Remote Distributed Measurement and Control System

LIAN Guang-yao1,HUANG Kao-li2,ZHENG Si-long1(1.Department of Missile Engineering,Ordnance Engineering College,Shijiazhuang,050003,China;2.College of Power Engineering,Nanjing University of Science and Technology,Nanjing,210094,China)  
The communication protocol of RS232 to RS485 is translated with serial port control functions and I/O functions of Lab Windows/CVI, in order to realize communication control of RS485 bus in the remote distributed measurement and control system. At first, open COM ports and initialize them, send steering order and acquire sample signals. The local controller sends steering order to field signal-acquisition equipments and receives test data from RS485 bus, thereby communication control of RS485 bus was realized. The reliability of communication control can be improved greatly as a result of Win timer that can checks the states of COM ports was used in program.
【CateGory Index】: TP273
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【Co-citations】
Chinese Journal Full-text Database 10 Hits
1 HUANG Ying,CAI Bai_gen (School of Electronics and Information Engineering, Beijing JiaoTong University, Beijing 100044,China);On-Board Data Acquisition Platform for ITS Based on Virtual Instrument[J];Journal of Northern Jiaotong University;2003-06
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8 HAN Zhi-xia(Dept.Electronics & Elect.Engn.,Baoji Univ.Arts & Sci.,Baoji 721007,Shaanxi,China);Design and realization of virtual oscilloscope based on LabWindows/CVI[J];Journal of Baoji University of Arts and Sciences(Natural Science Edition);2008-03
9 WANG Xiaodong,TIAN Hongwei ,BAI Yu(School of Mechatronic Engineering, CCUT, Changchun 130012);The Design of Automatic Balancing System by Mass Removing Based on Lab Windows/CVI[J];Journal of Changchun Institute of Optics and Fine Mechanics;2003-04
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3 Fang Weidong~1 Wang Ping~2 Fang Peixiao~3(1 Shanghai Research Centre for Wireless Communications Shanghai 200335 China;2 Shanghai Institute of Microsystem and Information Technology CAS Shanghai 200050 China;China Tie Tong Shanghai Branch HuBei District Branch Bureau Data Center Shanghai 200070 China);Measurement control technology of radio propagation testing system Base on LabWindows/CVI[A];[C];2008
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【Secondary References】
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