In this thesis, user interaction, data management, COM as well as the information interchange technology between the super ordinate supervision machine and the PLC controls to the lower were involved, and the optimization schemes in communication among many types of equipment were discussed. 其中涉及到人机交互、数据管理、COM技术以及上位监控机对下位PLC进行控制的信息交换技术,并且讨论了多设备通信中的优化方案。