1771-A1BK
1771-A1BK
1771-A1BK
试设计一个照明灯的控制程序。当接在I0.0上的声控开关感应到声音信号后,接在Q0.0上的照明灯可发光30S。如果在这段时间内声控开关又感应到声音信号,则时间间隔从头开始。这样可确保**一次感应到声音信号后,灯光可维持30S的照明。
答案:参考梯形图
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