GE F31X111PSHATG1

 I/O尋址方式

PLC的硬件結(jié)構(gòu)主要分單元式和模塊式兩種。前者將PLC的主要部分(包括I/O系統(tǒng)和電源等)全部安裝在一個(gè)機(jī)箱內(nèi)。后者將PLC的主要硬件部分分別制成模塊，然后由用戶根據(jù)需要將所選用的模塊插入PLC機(jī)架上的槽內(nèi)，構(gòu)成一個(gè)PLC系

統(tǒng)。

不論采取哪一種硬件結(jié)構(gòu)，都必須確立用于連接工業(yè)現(xiàn)場的各個(gè)輸入/輸出點(diǎn)與PLC的I/O映象區(qū)之間的對(duì)應(yīng)關(guān)系，即給每一一個(gè)輸入/輸出點(diǎn)以明確的地址確立這種對(duì)應(yīng)關(guān)系所采用得方式稱為IO尋址方式。

I/O尋址方式有以下三種:

➢固定的I/O尋址方式

這種I/O尋址方式是由PLC制造廠家在設(shè)計(jì)、生產(chǎn)PLC時(shí)確定的，它的每一個(gè)輸入/輸出點(diǎn)都有一個(gè)明確的固定不變的地址。一般來說，單元式的PLC采用這種I0尋址方式。

➢開關(guān)設(shè)定的I/O尋址方式

這種I/O尋址方式是由用戶通過對(duì)機(jī)架和模塊上的開關(guān)位置的設(shè)定來確定的。

➢用軟件來設(shè)定的I/O尋址方式

這種I/O尋址方式是有用戶通過軟件來編制I/O地址分配表來確定的。

系列90'MMicroPLC是GEFANUC系列90MPLC家族的一員。其緊湊的物理設(shè)計(jì)，簡易的安裝方式，強(qiáng)大的控制功能，和極具競爭力的價(jià)格，可用于許多經(jīng)費(fèi)緊張，低成本的小規(guī)�？刂茍龊稀�

Micro PLC的類型

14點(diǎn)Micro;

28點(diǎn)Micro;

23點(diǎn)Micro(帶2AI/1AO);

14點(diǎn)擴(kuò)展Micro;

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