远动104规约接收序号不连续问题的分析与解决

摘要

远动104规约I帧序号计数的连续性对SCADA系统的安全稳定运行具有重要意义，针对104规约运行中经常出现的“接收序号不连续”问题，通过典型报文分析找到了问题原因及解决方法，即模数测试方法和I帧序号人工清零重新计数的方法。%Continuity of I frame's serial number in telecontrol protocol 104 is very important to safe and stable operation of SCADA, this paper is aimed at the problem of“Receiving Signal Discontinuity” which often occurs in the running of 104 protocol, the cause of the problem is given by the analysis of typical recorded message, the methods about modulus test and I frame's serial number manual reset are also given in this paper.