描述
本指令单独使用，无须操作数，是程序的最后一条指令，表示程序到此结束。PLC在执行用户程序时，当执行到END指令时就停止执行程序阶段，转入执行输出刷新阶段。如果程序中遗漏END指令，编程器执行时则会显示出错信号：“NOENDINSET”：当加上END指令后，PLC才能正常运行。本指令也可用来分段调试程序。
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