【摘要】 为了配合在PC机上运行的软PLC编辑开发系统,使PC机完成相应的控制功能,研究和设计了软PLC运行系统．论文简述了软PLC的体系结构及运行系统的功能,详细介绍了软PLC运行系统的硬件结构和开发过程,给出了硬件系统的PCB电路板图．在设计过程中对整个电路采取了电磁兼容性处理,减小了信号间及外部干扰源的干扰．实验表明,设计的下位机能很好地实现通信与控制功能．更多还原

【Abstract】 Programmable logic controller based on PC,with open operation architecture,strong ability of data processing and good network communication,is a new type control technique emerging in current industry au- tomation field,and can meet the demands of open and flexible control system.In order to coordinate with Soft PLC developing system running on PC to carry out corresponding control function,an operating system of Soft PLC is designed and developed.The paper briefly describes the system structure of soft PLC and the function of its operation system,introduces in details hardware structure and development process of its opera- tion system,and provides PCB circuit board.In circuit design,electromagnetism compatibility design is adopted in order that interference between signals as well as from exterior interference source is reduced.The experiment indicates operation system designed can efficiently fulfill communication and control.更多还原