手機(jī)號(hào)
未認(rèn)證執(zhí)照
何工()
普通會(huì)員
何工 ()
aeg 120-108-005
控制性能
可以分為高檔機(jī)、中檔機(jī)和低檔機(jī)。
低檔機(jī)
這類可編程序控制器，具有基本的控制功能和一般的運(yùn)算能力。工作速度比較低，能帶的輸入和輸出模塊的數(shù)量比較少。
比如，德國siemens公司生產(chǎn)的s7-200就屬于這一類。
中檔機(jī)
這類可編程序控制器，具有較強(qiáng)的控制功能和較強(qiáng)的運(yùn)算能力。它不僅能完成一般的邏輯運(yùn)算，也能完成比較復(fù)雜的三角函數(shù)、指數(shù)和pid運(yùn)算。工作速度比較快，能帶的輸入輸出模塊的數(shù)量也比較多，輸入和輸出模塊的種類也比較多。
比如，德國siemens公司生產(chǎn)的s7-300就屬于這一類。
高檔機(jī)
這類可編程序控制器，具有強(qiáng)大的控制功能和強(qiáng)大的運(yùn)算能力。它不僅能完成邏輯運(yùn)算、三角函數(shù)運(yùn)算、指數(shù)運(yùn)算和pid運(yùn)算，還能進(jìn)行復(fù)雜的矩陣運(yùn)算。工作速度很快，能帶的輸入輸出模塊的數(shù)量很多，輸入和輸出模塊的種類也很全面。這類可編程序控制器可以完成規(guī)模很大的控制任務(wù)。在聯(lián)網(wǎng)中一般做主站使用。
比如，德國siemens公司生產(chǎn)的s7-400就屬于這一類。
結(jié)構(gòu)
整體式
整體式結(jié)構(gòu)的可編程序控制器把電源、cpu、存儲(chǔ)器、i/o系統(tǒng)都集成
plc結(jié)構(gòu)
plc結(jié)構(gòu)
在一個(gè)單元內(nèi)，該單元叫做作基本單元。一個(gè)基本單元就是一臺(tái)完整的plc。
控制點(diǎn)數(shù)不符合需要時(shí)，可再接擴(kuò)展單元。整體式結(jié)構(gòu)的特點(diǎn)是非常緊湊、體積小、成本低、安 裝方便。
組合式
組合式結(jié)構(gòu)的可編程序控制器是把plc系統(tǒng)的各個(gè)組成部分按功能分成
plc組合
plc組合
若干個(gè)模塊，如cpu模塊、輸入模塊、輸出模塊、電源模塊等等。其中各模塊功能比較單一，模塊的種類卻日趨豐富。比如，一些可編程序控制器，除了－些基本的i/o模塊外，還有一些特殊功能模塊，像溫度檢測(cè)模塊、位置檢測(cè)模塊、pid控制模塊、通訊模塊等等。組合式結(jié)構(gòu)的plc特點(diǎn)是cpu、輸入、輸出均為獨(dú)立的模塊。模塊尺寸統(tǒng)一、安 裝整齊、i/o點(diǎn)選型自由、安 裝調(diào)試、擴(kuò)展、維修方便。
疊裝式
疊裝式結(jié)構(gòu)集整體式結(jié)構(gòu)的緊湊、體積小、安 裝方便和組合式結(jié)構(gòu)的i/o點(diǎn)搭配靈話、安 裝整齊的優(yōu)點(diǎn)于一身。它也是由各個(gè)單元的組合構(gòu)成。其特點(diǎn)是cpu自成獨(dú)立的基本單元（由cpu和一定的i/o點(diǎn)組成），其它i/o模塊為擴(kuò)展單元。在安 裝時(shí)不用基板，僅用電纜進(jìn)行單元間的聯(lián)接，各個(gè)單元可以一個(gè)個(gè)地疊裝。使系統(tǒng)達(dá)到配置靈活、體積小巧。
manufacturer p/n
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| 暫無產(chǎn)品詢價(jià)記錄 | |||
| 采購商 | 成交單價(jià)（元） | 數(shù)量 | 成交時(shí)間 |
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| 暫無購買記錄 | |||
地區(qū)：滄州
主營產(chǎn)品：機(jī)床維修,鑄件,工量具地區(qū)：汕頭
主營產(chǎn)品：物流公司,貨運(yùn)站,國內(nèi)陸運(yùn)地區(qū)：廊坊
主營產(chǎn)品：富卓液壓,施羅德液壓,海普洛液壓地區(qū)：衡水
主營產(chǎn)品：河北變形縫,河南變形縫,山東變形縫
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