存儲(chǔ)器分為系統(tǒng)程序存儲(chǔ)器和用戶(hù)程序存儲(chǔ)器，系統(tǒng)程序相當(dāng)于個(gè)人計(jì)算機(jī)中的操作系統(tǒng)，它使PLC具有基本的智能，能完成PLC設(shè)計(jì)者的規(guī)定的各種工作。系統(tǒng)程序由PLC的生廠家設(shè)計(jì)并固定化在ROM（只讀存儲(chǔ)器）中，用戶(hù)不能讀取。用戶(hù)程序由用戶(hù)設(shè)計(jì)，它使PLC能完成用戶(hù)要球的特定功能，用戶(hù)程序存儲(chǔ)器的容量以字節(jié)（B）為單位。


聯(lián)系人：黃生(銷(xiāo)售工程師) 
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