西门子S7-200系列PLC定时器的复位可靠性分析

Analysis of Reset Reliability of Siemens S7-200 Series PLC Timer

针对西门子S7—200系列PLC定时器刷新方式的不同造成对应用程序运行结果的不同影响原因进行了分析,对程序中定时器的不可靠复位方式进行了探讨,并根据分析结果提出了在编程时定时器应采用的合理复位方式。

The factors of application performance effect caused by different refreshing mode of Sie- mens S7-200 series PLC timer have been analyzed. The unreliable timer reset mode of the pro- gram has been studied, and a reasonable reset mode adopted by timer in programming has been proposed according to analysis results.