商鋪名稱:廈門興銳嘉進(jìn)出口有限公司
聯(lián)系人:劉錦玉(小姐)
聯(lián)系手機(jī):
固定電話:
企業(yè)郵箱:3005393110@qq.com
聯(lián)系地址:廈門市思明區(qū)呂嶺路1733號創(chuàng)想中心20樓
郵編:361000
聯(lián)系我時(shí),請說是在線纜網(wǎng)上看到的,謝謝!
A16B-1100-0330/05B
A16B-1100-0330/05B
通常講,依據(jù)實(shí)踐的I/O點(diǎn)數(shù),凡落在上述不一樣規(guī)劃者,選用相應(yīng)的機(jī)型,功用報(bào)價(jià)比必定要高;相反,肯定要差些。
自然,也有特別狀況。如操控點(diǎn)數(shù)不是十分之多,不是非用大型機(jī)不行,但因大型機(jī)的特別操控單元多,可進(jìn)行熱備裝備,因此選用了大型機(jī)。
4.2按構(gòu)造區(qū)分
PLC可分為箱體式及模塊式兩大類。微型機(jī)、小型機(jī)多為箱體式的,但從開展趨勢看,小型機(jī)也逐漸開展成模塊式的了。如OMRON公司,本來小型機(jī)都是箱體式,如今的CQM1則為模塊式的。
箱體的PLC把電源、CPU、內(nèi)存、I/O體系都集成在一個(gè)小箱體內(nèi)。一個(gè)主機(jī)箱體即是一臺完好的PLC,就可用以完結(jié)操控。操控點(diǎn)數(shù)不符需求,可再接拓展箱體,由主箱體及若干拓展箱體構(gòu)成較大的體系,以完結(jié)對較多點(diǎn)數(shù)的操控。
模塊式的PLC是按功用分紅若干模塊,如CPU模塊、輸入模塊、輸出模塊、電源模塊等等。大型機(jī)的模塊功用更單一一些,因此模塊的品種也相對多些。這也可說是趨勢。如今一些中型機(jī),其模塊的功用也趨于單一,品種也在增鄉(xiāng)。如一樣OMRON公司C20系列PLC,H機(jī)的CPU單元就富含電源,而Ha機(jī)則把電源分出,有獨(dú)自的電源模塊。
模塊功用更單一、品種更多,可便于體系裝備,使PLC更能物盡其用,到達(dá)更高的運(yùn)用效益。
由模塊聯(lián)結(jié)成體系有三種辦法:
①無底板,靠模塊間接口直接相聯(lián),然后再固定到相應(yīng)導(dǎo)軌上。德維森公司的V80系列PLC即是這種構(gòu)造,對比緊湊。
②有底板,一切模塊都固定在底板上。如德維森公司的PPC11、PPC22和PPC31系列PLC,OMRON公司的C200Ha機(jī),CV2000等中、大型機(jī)即是這種構(gòu)造。它對比結(jié)實(shí),但底板的槽數(shù)是固定的,如3、5、8、10槽等等。槽數(shù)與實(shí)踐的模塊數(shù)不必定持平,裝備時(shí)不免有空槽。這既糟蹋,又多占空間,還得占空單元把剩余的槽作添補(bǔ)。
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FRCE SYS68K CPU-40 B/16 1
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