PLc通(tong)(tong)(tong)(tong)過輸入(ru)(ru)繼(ji)(ji)電(dian)(dian)器(qi)區(qu)中(zhong)的(de)各個(ge)(ge)位(wei)與外(wai)部(bu)(bu)的(de)輸人(ren)(ren)物理設備建立(li)聯(lian)系。當PLc掃描(miao)到數據I／o階段時，輸入(ru)(ru)點的(de)狀(zhuang)態(tai)就鎖存(cun)到強人(ren)(ren)繼(ji)(ji)電(dian)(dian)器(qi)。輸入(ru)(ru)繼(ji)(ji)電(dian)(dian)器(qi)為(wei)只(zhi)(zhi)讀存(cun)儲器(qi)，其(qi)內容不能用程序改變(bian)，而只(zhi)(zhi)能由(you)輸入(ru)(ru)點的(de)狀(zhuang)態(tai)(映保)決定。cQMlH系列PLc輸入(ru)(ru)繼(ji)(ji)電(dian)(dian)器(qi)區(qu)有16個(ge)(ge)通(tong)(tong)(tong)(tong)道(dao)，通(tong)(tong)(tong)(tong)道(dao)號(hao)(hao)為(wei)ooo—015。每個(ge)(ge)通(tong)(tong)(tong)(tong)道(dao)有16個(ge)(ge)輸入(ru)(ru)繼(ji)(ji)電(dian)(dian)器(qi)，位(wei)號(hao)(hao)為(wei)oo一(yi)15。因此一(yi)個(ge)(ge)繼(ji)(ji)電(dian)(dian)器(qi)號(hao)(hao)由(you)兩部(bu)(bu)分(fen)組成(cheng)：一(yi)部(bu)(bu)分(fen)是(shi)(shi)通(tong)(tong)(tong)(tong)道(dao)號(hao)(hao)，另一(yi)部(bu)(bu)分(fen)是(shi)(shi)該(gai)繼(ji)(ji)電(dian)(dian)器(qi)通(tong)(tong)(tong)(tong)道(dao)中(zhong)的(de)位(wei)號(hao)(hao)。例如(ru)，某繼(ji)(ji)電(dian)(dian)器(qi)編號(hao)(hao)是(shi)(shi)ooooo，其(qi)中(zhong)前3位(wei)ooo是(shi)(shi)通(tong)(tong)(tong)(tong)道(dao)號(hao)(hao)，后2位(wei)oo是(shi)(shi)位(wei)號(hao)(hao)。因為(wei)通(tong)(tong)(tong)(tong)道(dao)導000屬于(yu)輸入(ru)(ru)繼(ji)(ji)電(dian)(dian)器(qi)區(qu)，所以這是(shi)(shi)一(yi)個(ge)(ge)輸入(ru)(ru)繼(ji)(ji)電(dian)(dian)器(qi)。又如(ru)繼(ji)(ji)電(dian)(dian)器(qi)號(hao)(hao)0103，表示(shi)第o01通(tong)(tong)(tong)(tong)道(dao)的(de)03位(wei)，它也是(shi)(shi)輸入(ru)(ru)繼(ji)(ji)電(dian)(dian)器(qi)。