D520BC14
D520BC14
D520BC14
在中断OB37中执行调用大量FC程序，是否影响OB1中正常程序的处理速度和其它中断程序的速度?对CPU的运行有何影响?
答：1、在中断OB37中执行调用大量FC程序，是否影响OB1中正常程序的处理速度和其它中断程序的速度?
a、组织块是按系统已分配的中断优先级来执行，数字越大优先级越高，优先级高的可以中断优先级低的。
b、一般OB1的默认为1级，OB30-OB38默认为7-15级，OB37为14级。数字越大优先级越高。
c、OB37中执行调用大量FC程序，则其就占用CPU时间长，肯定会响应对OB1中或其他中断的程序的扫描（执行）。
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