基于MODBUS协议的镁熔液含氢量自动检测接口设计  

Design of Interface for the Automatic Detection of Hydrogen Content in Magnesium Melt Based on MODBUS Protocol

作　　者：翟健健 许四祥[1] 王忍宝 姚志生[1] 

机构地区：[1]安徽工业大学机械工程学院,安徽马鞍山243002

出　　处：《有色金属工程》2017年第4期32-35,共4页Nonferrous Metals Engineering

基　　金：国家自然科学基金资助(51374007);安徽省自然科学基金资助(11040606M104);国家级大学生创新训练项目(201510360033)

摘　　要：针对图像处理在工业现场检测镁熔液含氢量中的诸多问题,提出基于MODBUS协议的DSP与PLC的通信方案。方案以DM642为主站,S7-200为从站,设计了DSP与PLC通信的接口电路,并进行主站和从站的协议编程以及协议模块的调试。实验结果表明,通信方案稳定可靠,实时性好,为工业现场自动检测镁熔液含氢量奠定基础。Aiming at many problems of image processing in industry field for the measurement of hydrogen content in magnesium melt, a communication scheme between DSP and PLC based on MODBUS protocol is proposed. The scheme takes DM642 as the main station and S7-200 as the slave station. Except that, firstly, the interface circuit of DSP and PLC communication is designed. Then, the protocol programming of master station and slave station is completed. Finally, the protocol module debugging is solved. The experiment results show that the communication scheme is stable and has good real-time performance. This work can provide a foundation for the automatic detection of the hydrogen content in magnesium melt.

关 键 词：镁熔液 含氢量 MODBUS DM642 S7-200 

分 类 号：TG146.22[一般工业技术—材料科学与工程]