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This paper aims at analyzing the design and the realization process of PLC practical teaching device developed by the configuration technology. Specifically, t1his practical teaching device employs the teaching monitoring interface developed by the configuration software to communicate with the programmable controller so as to realize such functions as system login, question type selection and operation control for the teaching and assessing process. Meanwhile, the system function anddoi:10.5120/ijca2015906133 fatcat:zlaqso4ayzgbni7zlbplcgu7xq