Profinet IO系统的实时技术架构分析

为了对Profinet IO系统的实时性能作出全面评估,详细分析了其通信功能和IO控制器的实时技术架构,从而计算出通信功能的延迟时间和控制器的循环周期,最终得出Profinet IO系统的响应时间.对于通信功能的延迟时间,通过深刻理解技术架构,合理设置计算条件,验证了西门子宣称的延迟时间,澄清了一些错误的理解和计算,并...

Analysis on Real-Time Technical Architecture of Profinet IO System

In order to comprehensively evaluate the real-time performance of Profinet IO system,the real-time technology architecture for its communication function and IO controller is detailedly analyzed.According to this analysis,the latency time of communication function and the cycle time of the IO controller are calculated,and then,the response time of Profinet IO system is deduced.In the matter of the latency time of communication function,Siemens’s declared value is verified by deeply understanding the technology architecture and setting calculating conditions reasonably.In accordance with the IO controller,the process in which the IO controller utilizes the IO signal and the working principle of cycle time by deeply understanding the technology architecture and communication principle is explained.Finally,the way to improve the real-time performance of Profinet IO system based on these analyses above is pointed out.