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140CRA93200 Schneider

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公司名稱廈門莫格電氣自動(dòng)化有限公司
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型號(hào)140CRA9320
所在地廈門市
廠商性質(zhì)經(jīng)銷商
更新時(shí)間2017/6/9 9:20:00
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140CRA93200

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廈門莫格電氣自動(dòng)化有限公司是一家多年專業(yè)銷售進(jìn)口自動(dòng)化系統(tǒng)（機(jī)器人系統(tǒng)、分布式控制系統(tǒng)DCS、可編程序控制器PLC、工業(yè)控制通訊轉(zhuǎn)換器、遠(yuǎn)端輸出/輸入模塊、人機(jī)界面）備件。以停產(chǎn)控制系統(tǒng)零部件、為良好優(yōu)勢(shì)、我們有大量庫(kù)存和盈余操控系統(tǒng)零件、停產(chǎn)的控制系統(tǒng)部分硬件、我們也發(fā)布了許多新的硬件和產(chǎn)品來(lái)支持你現(xiàn)有的控制系統(tǒng)或運(yùn)用較早的控制技術(shù)、停產(chǎn)的“DCS系統(tǒng)備品備件 PLC模塊備件”整機(jī)及配件系列、有著強(qiáng)大的優(yōu)勢(shì)。只要您需要的PLC產(chǎn)品、我們就能幫您找到、公司*價(jià)格優(yōu)勢(shì)。

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140CRA93200
1）硬件模擬法是使用一些硬件設(shè)備（如用另一臺(tái)PLC或一些輸入器件等）模擬產(chǎn)生現(xiàn)場(chǎng)的信號(hào)，并將這些信號(hào)以硬接線的方式連到PLC系統(tǒng)的輸入端，其時(shí)效性較強(qiáng)。
2）軟件模擬法是在PLC中另外編寫一套模擬程序，模擬提供現(xiàn)場(chǎng)信號(hào)，其簡(jiǎn)單易行，但時(shí)效性不易保證。模擬調(diào)試過程中，可采用分段調(diào)試的方法，并利用編程器的監(jiān)控功能。

140CRA93200 Schneider 產(chǎn)品信息

Schneider 140CRA93200

1.控制規(guī)模

控制規(guī)模代表PLC控制能力，看其能對(duì)多少輸入、輸出點(diǎn)及對(duì)多少路模擬進(jìn)行控制。

控制規(guī)模與速度有關(guān)。因?yàn)橐?guī)模大了，用戶程序也長(zhǎng)，執(zhí)行指令的速度不快，勢(shì)必延長(zhǎng)PLC循環(huán)的時(shí)間，也必然會(huì)延長(zhǎng)PLC對(duì)輸入信號(hào)的響應(yīng)。為了避免這個(gè)情況，PLC的工作速度就要快。所以，大型PLC的工作速度總是比小的要快。

控制規(guī)模還與內(nèi)存區(qū)的大小有關(guān)。規(guī)模大，用戶程序長(zhǎng)，要求有更大的用戶存儲(chǔ)區(qū)。同時(shí)點(diǎn)數(shù)多，系統(tǒng)的存儲(chǔ)器輸入、輸出的信號(hào)區(qū)（輸入輸出繼電器區(qū)或稱輸入、輸出映射區(qū)）也大。這個(gè)區(qū)大，相應(yīng)地內(nèi)部器件（解釋見后）也要增多，這些都要求有更大的系統(tǒng)存儲(chǔ)區(qū)。

控制規(guī)模還與輸入、輸出電路數(shù)有關(guān)。如控制規(guī)模為1024點(diǎn)，那就得有1024條I/O電路。這些電路集成于I/O模塊中，而每個(gè)模塊有多少路的I/O點(diǎn)總是有數(shù)的。所以，規(guī)模大，所使用的模塊也多。

控制規(guī)模還與PLC指令系統(tǒng)有關(guān)。規(guī)模大的PLC指令條數(shù)多，指令的功能也強(qiáng)，才能應(yīng)付對(duì)點(diǎn)數(shù)多的系統(tǒng)進(jìn)行控制的需要。

控制規(guī)模是對(duì)PLC其它性能指標(biāo)起著制約作用的指標(biāo)；也是PLC劃分為微、小、中、大和特大型

2.組成模塊

PLC的結(jié)構(gòu)雖有箱體及模塊式之分，但從質(zhì)上看，箱體也是模塊，只是它集成了更多的功能。在此，不妨把PLC的模塊組成當(dāng)作所有PLC的結(jié)構(gòu)性能。

這個(gè)性能含義是指某型號(hào)PLC具有多少種模塊，各種模塊都有什么規(guī)格，并各具什么特點(diǎn)。

一般講，規(guī)模大的PLC，檔次高的PLC模塊的種類也多，規(guī)格也多，反映它的特點(diǎn)的性能指標(biāo)也高。但模塊的功能則單一些。相反，小型PLC、檔次低的PLC模塊種類也少，規(guī)格也少，指標(biāo)也低。但功能則多樣些，以至于集成為箱體。

組成PLC的模塊是PLC的硬件基礎(chǔ)，只有弄清所選用的PLC都具有那些模塊及其特點(diǎn)，才能正確選用模塊，去組成一臺(tái)完整的PLC，以滿足控制系統(tǒng)對(duì)PLC的要求。

廈門莫格電氣自動(dòng)化有限公司

：張美霞

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