Design of multifunctional PLC acquisition terminal system
This paper introduces the system design and implementation of a multifunctional PLC ac-quisition terminal,aiming at improving the information and visualization level of the running state of CNC machine tools.The terminal is developed in Linux based on the I.MX 6ull control core and has a variety of input interfaces(Modbus TCP,Modbus 485 and I/O interfaces)to adapt to different PLC devices.And it can select Wi-Fi,4G or Ethernet interface module through the upper computer configuration to achieve real-time data transmission to MQTT server.The physical test of the system shows that the ter-minal can effectively read PLC data,and can accurately upload the data to the server through MQTT pro-tocol,and achieve the expected functional goals,which is of great significance for improving the intelli-gent level of industrial production lines.
Linux systemARMacquisition terminalPLC equipmentMQTT
万方数据
维普
