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windylj168
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樓主  發(fā)表于: 2015-11-12 10:58
本書(shū)為高校教材，實(shí)訓部分第52頁(yè)順序時(shí)控，為何按教程案例，用V2.0模擬軟件，程序不能按（文字敘述）正常運行，按停止按鈕TA后Q0.0先于Q0.1斷開(kāi)(而要求應該Q0.0后于Q0.1斷開(kāi)），何因？而將網(wǎng)絡(luò )2中T39常閉改成M0.1常閉才能按要求工作？大師指教!多謝！http://pan.baidu.com/s/1gdAXucb
[ 此帖被windylj168在2015-11-12 13:32重新編輯 ]
sxz283189356
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1樓  發(fā)表于: 2015-11-12 11:13
PLC掃描的問(wèn)題，先斷開(kāi)常閉再接通常開(kāi)，就像按鈕互鎖的往返運動(dòng)一樣的意思

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