Automatic Control System of the smart transfer device based on S120 and PLC

The transfer device is widely used in the industrial production line, and the different production lines have different requirements for the equipment control system.In the paper, a smart transfer device control system based on the S120 and PLC was developed for a production line with two different products, and it can transfer each product in different mode.The system uses the master-slave control mode，which PC is upper computer and the S7-300 PLC is lower computer.The data exchange between PLC and S120 is achieved by Profibus, and the data between PLC and PC is exchanged by Ethernet.The system is equipped with Human Machine Interface, which can meet the requirements of high precision control of the transfer device, and solve the complex problem of multi-parameter control and multi-function control.The result of field debugging verified that the system is stable, easy to operate, and has strong practicability.