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PROFIBUS现场总线协议的实时性是评价其性能的关键因素,因此,如何研究和计算实时性能参数显得尤为重要。针对这一问题,在对PROFIBUS总线存取协议深入分析的基础上,设计了基于PROFIBUS-DP通信性能测试平台。通过测试平台分析和计算了包信息率、传输效率、网络平均利用率、网络吞吐量、传输延迟和令牌循环时间等实时性能参数,并给出了总线循环时间与主站个数及报文数量之间的关系之间的关系,从而定性定量分析了PROFIBUS-DP现场总线的实时性能。
The real-time of PROFIBUS field bus protocol is the key factor to evaluate its performance, so how to research and calculate real-time performance parameters is very important. In response to this problem, based on in-depth analysis of the PROFIBUS bus access protocol, based on the PROFIBUS-DP communication performance testing platform. The real-time performance parameters such as packet information rate, transmission efficiency, average network utilization, network throughput, transmission delay and token cycle time are analyzed and calculated by the test platform. The bus cycle time, number of master stations and packets The relationship between the number of the relationship between qualitative and quantitative analysis of the PROFIBUS-DP fieldbus real-time performance.