140NVM10000現(xiàn)貨
140NVM10000
1. (一)梯形圖按從左到右、從上到下的順序排列。每一邏輯行起始于左母線(xiàn),然后是觸點(diǎn)的串、并聯(lián)接,最后是線(xiàn)圈與右母線(xiàn)相聯(lián)。
(二)梯形圖中每個(gè)梯級(jí)流過(guò)的不是物理電流,而是“概念電流”,從左流向右,其兩端沒(méi)有電源。這個(gè)“概念電流”只是形象地描述用戶(hù)程序執(zhí)行中應(yīng)滿(mǎn)足線(xiàn)圈接通的條件。
(三)輸入繼電器用于接收外部輸入信號(hào),而不能由PLC內(nèi)部其它繼電器的觸點(diǎn)來(lái)驅(qū)動(dòng)。因此,梯形圖中只出現(xiàn)輸入繼電器的觸點(diǎn),而不出現(xiàn)其線(xiàn)圈。輸出繼電器輸出程序執(zhí)行結(jié)果給外部輸出設(shè)備,當(dāng)梯形圖中的輸出繼電器線(xiàn)圈得電時(shí),就有信號(hào)輸出,但不是直接驅(qū)動(dòng)輸出設(shè)備,而要通過(guò)輸出接口的繼電器、晶體管或晶閘管才能實(shí)現(xiàn)。輸出繼電器的觸點(diǎn)可供內(nèi)部編程使用。 2.語(yǔ)句表編程語(yǔ)言 指令語(yǔ)句表示一種與計(jì)算機(jī)匯編語(yǔ)言相類(lèi)似的助記符編程方式,但比匯編語(yǔ)言易懂易學(xué)。一條指令語(yǔ)句是由步序、指令語(yǔ)和作用器件編號(hào)三部分組成。 3.控制系統(tǒng)流程圖編程圖 控制系統(tǒng)流程圖是一種較新的編程方法。它是用像控制系統(tǒng)流程圖一樣的功能圖表達(dá)一個(gè)控制過(guò)程,目前國(guó)際電工協(xié)會(huì)(IEC)正在實(shí)施發(fā)展這種新式的編程標(biāo)準(zhǔn)。
我們的目標(biāo)是以?xún)?yōu)異的產(chǎn)品、可靠的質(zhì)量、有效的服務(wù),滿(mǎn)足顧客日益增長(zhǎng)的需要。質(zhì)量是我們的自尊心
☆ 也許你從未嘗試過(guò)給我們一個(gè)機(jī)會(huì),還自己一個(gè)大大的驚喜。
★ 也許你在乎的不僅僅是優(yōu)惠的價(jià)格,更是質(zhì)量的保障。
☆ 也許你不曾知道,我們的價(jià)格低廉,質(zhì)量卻這般優(yōu)質(zhì)。
★ 你敢不敢丟下所有的質(zhì)疑,相信自己的選擇?相信我們。
☆【福州卓凱】庫(kù)存多多,價(jià)格那是極好的。盡管好的便宜沒(méi)的說(shuō)、但我們都是發(fā)順豐。
★ 我們售出的所有系統(tǒng)產(chǎn)品,均提供12個(gè)月的質(zhì)保!在質(zhì)保期內(nèi),有質(zhì)量問(wèn)題無(wú)條件免費(fèi)更換. 我們絕對(duì)保持無(wú)限期的低價(jià)。
【福州卓凱電子科技有限公司】
【電話(huà);0591-62182520】
【詢(xún)價(jià)熱線(xiàn);13696852881李濤】
【QQ;1273632994】
【傳真:0591-62032566 】
【郵箱:1273632994@qq.com】
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599K04
93012SE3500KOE
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610280118T
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194RHM1N1
TG761
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13213R600A
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20AD014A3AYYADC0
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140MC2EB25RX
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871PBW15C40R3
800TCQBH2GD1
800TJ4104KE7ANEN
500FBOB930
SKR1CP1C567D545
800TH3207B
800TQC424AAGA
100KFSV55M
SKU1FAN1F2
836TT300JX135X15X7
20F11RC3P5JA0NNNNN
800TNX1385
280PWRM35EM015
45MLAFR1250P37
800TJ631KA1
802TKS6
836T-T301JN18
440TMDBLE150B0H
898D58DTM19
800FP-CC2U296
837A4JX221X9