德國(guó)西門子（SIEMENS）公司生產(chǎn)的可編程序控制器在我國(guó)的應(yīng)用也相當(dāng)廣泛，在冶金、化工、印刷生產(chǎn)線等領(lǐng)域都有應(yīng)用。西門子（SIEMENS）公司的PLC產(chǎn)品包括LOGO、S7-200、S7-1200、S7-300、S7-400等。 西門子S7系列PLC體積小、速度快、標(biāo)準(zhǔn)化，具有網(wǎng)絡(luò)通信能力，功能更強(qiáng)，可靠性高。S7系列PLC產(chǎn)品可分為微型PLC（如S7-200），小規(guī)模性能要求的PLC（如S7-300）和中、高性能要求的PLC（如S7-400）等。
上海施承電氣自動(dòng)化有限公司
聯(lián)系人：黃經(jīng)理
手機(jī)：135-6425-5051 QQ：2271-387-194
電話：021-3166-2619 傳真：021-6781-7055
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西門子SIMATIC系列PLC，誕生于1958年，經(jīng)歷了C3,S3,S5,S7系列，已成為應(yīng)用非常廣泛的可編程控制器。
西門子（SIMATIC）PLC的6代
1、西門子公司的產(chǎn)品最早是1975年投放市場(chǎng)的SIMATIC S3，它實(shí)際上是帶有簡(jiǎn)單操作接口的二進(jìn)制控制器。
2、1979年，S3系統(tǒng)被SIMATIC S5所取代，該系統(tǒng)廣泛地使用了微處理器。
3、20世紀(jì)80年代初，S5系統(tǒng)進(jìn)一步升級(jí)——U系列PLC，較常用機(jī)型：S5-90U、95U、100U、115U、135U、155U。
4、1994年4月，S7系列誕生，它具有更國(guó)際化、更高性能等級(jí)、安裝空間更小、更良好的WINDOWS用戶界面等優(yōu)勢(shì)，其機(jī)型為：S7-200、300、400。
5、1996年，在過(guò)程控制領(lǐng)域，西門子公司又提出PCS7（過(guò)程控制系統(tǒng)7）的概念，將其優(yōu)勢(shì)的WINCC（與WINDOWS兼容的操作界面）、PROFIBUS（工業(yè)現(xiàn)場(chǎng)總線）、COROS（監(jiān)控系統(tǒng)）、SINEC（西門子工業(yè)網(wǎng)絡(luò)）及控調(diào)技術(shù)融為一體。
6、西門子公司提出TIA（Totally Integrated Automation）概念，即全集成自動(dòng)化系統(tǒng)，將PLC技術(shù)溶于全部自動(dòng)化領(lǐng)域。
由最初發(fā)展至今，S3、S5系列PLC已逐步退出市場(chǎng)，停止生產(chǎn)，而S7系列PLC發(fā)展成為了西門子自動(dòng)化系統(tǒng)的控制核心，而TDC系統(tǒng)沿用SIMADYN D技術(shù)內(nèi)核，是對(duì)S7系列產(chǎn)品的進(jìn)一步升級(jí)，它是西門子自動(dòng)化系統(tǒng)最尖端，功能最強(qiáng)的可編程控制器。