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《Journal of Beijing Institute of Machinery》 2006-01
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Realization of communication between automatic devices based on Modbus protocol

MEI Rui,MU Yong-min(Department of Computer Science & Engineering,Beijing Information Technology Institute,Beijing 100101,China)  
How to realize communication between different kinds of automatic devices is the key to system integration.Serial communication based on Modbus protocol is a normal way to realize it.Serial communication theory of Mitsubishi PLC and smart single loop controller are introduced,and Modbus RTU protocol format is explained.The realization of software programming,and some problems in the communicaton procedure development and the resolution are presented.This method has significant application to devices connection.
【CateGory Index】: TP273.5
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