描述
得注意的是PLC和DCS這些原來處于不同硬件平臺的系統(tǒng)，正隨著計(jì)算技術(shù)、通信技術(shù)和編程技術(shù)的發(fā)展，趨向于建立同一硬件平臺，運(yùn)用同一個(gè)操作系統(tǒng)、同一個(gè)編程系統(tǒng)，執(zhí)行不同的DCS和PLC功能。這就是真正意義上的EIC三電一體化。或者說DCS和PLC的形態(tài)將會(huì)變化，而它們的功能依然存在。其中的關(guān)鍵技術(shù)應(yīng)該是嵌入式PC系統(tǒng)及支持現(xiàn)場總線的I/O （硬件） ，以及以IEC 61161-3為基礎(chǔ)的編程系統(tǒng)及強(qiáng)實(shí)時(shí)(hard real-time)操作系統(tǒng)。PLC在中國的發(fā)展
在中國，大約從1974、75年在北京和上海開始開發(fā)采用位片式微處理芯片的可編程順序控制器，并有所應(yīng)用。但一直未能形成批量生產(chǎn)。在改革開放剛起步的1979年，在當(dāng)時(shí)的機(jī)械部儀表局的推動(dòng)下，開始從美國MODICON引進(jìn)起584的PLC，并首先在電站的輔機(jī)如輸煤、除灰除渣、水處理系統(tǒng)以及水泥廠等控制系統(tǒng)中成功應(yīng)用，從而大大推動(dòng)了PLC在我國工業(yè)的大規(guī)模運(yùn)用。遺憾的是，花了很大一筆外匯的這個(gè)項(xiàng)目并不曾形成良性的有后續(xù)的發(fā)展。
自1985年開始，小型PLC首先是日本三菱電機(jī)公司的MELSEC-F，通過非政府渠道進(jìn)入中國市場。不到三、四年時(shí)間，小型PLC就形成了大面積的推廣應(yīng)用局面。1990年以后，Siemens、Allen Bradley以及其它知名品牌開始大舉進(jìn)入中國市場，占據(jù)中、大型的PLC的較大份額。1995年后形成了大型PLC以歐美為主、中型PLC歐美和日本平分秋色、小型PLC則以日本為主、Siemens也步步緊逼的格局。至今沒有很大改變。
產(chǎn)品承諾：
保?證?全新原裝進(jìn)口,
保?證?安全準(zhǔn)時(shí)發(fā)貨，
保?證售后服務(wù)質(zhì)量，
優(yōu)勢價(jià)格，大量現(xiàn)貨。
主營DCS系統(tǒng)配件
機(jī)器人系統(tǒng)配件
大型伺服系統(tǒng)配件
品牌：ABB???,AB??,GE,FOXBORO,本特利，英維思，伍德沃德，西屋，瑞恩，施耐德，西門子，摩托羅拉，安川。力士樂。ACSO，橫河等進(jìn)口品牌。 專業(yè)銷售進(jìn)口DCS? PLC系統(tǒng)備件模塊
Triconex?Siemens?Yaskawa?ABB?GE?Ovation?AB?Foxboro?Motorola?Schneider?XYCOM?KUKA ? 專業(yè)銷售進(jìn)口DCS? PLC系統(tǒng)備件模塊 15天包退換 一年質(zhì)保 大量現(xiàn)貨? 國內(nèi)實(shí)力庫存商家
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Agilestar – ONS-SC-Z3-1550 – For Cisco – New In Box
Agilestar – ONS-SC-Z3-1570 – For Cisco – New In Box
Agilestar – ONS-SC-Z3-1590 – For Cisco – New In Box
Agilestar – ONS-SC-Z3-1610 – For Cisco – New In Box
Agilestar – SF2G-LX4-5C-47-?AS – For FibroLAN – New in B
Agilestar – SF2G-LX4-5C-49-?AS – For FibroLAN – New in B
Agilestar – SF2G-LX4-5C-51-?AS – For FibroLAN – New in B
Agilestar – SF2G-LX4-5C-53-?AS – For FibroLAN – New in B
Agilestar – SF2G-LX4-5C-55-?AS – For FibroLAN – New in B
Agilestar – SF2G-LX4-5C-57-?AS – For FibroLAN – New in B
Agilestar – SF2G-LX4-5C-59-?AS – For FibroLAN – New in B
Agilestar – SF2G-LX4-5C-61-?AS – For FibroLAN – New in B
Agilestar – 3HE00047AA – For Alcatel-Lucent – NIB
Agilestar – FTRX-1811-3 – For Finisar – New In Box
Agilestar – ONS-SE-2G-1470 – For Cisco – New In Box
Agilestar – ONS-SE-2G-1490 – For Cisco – New In Box
Agilestar – ONS-SE-2G-1510 – For Cisco – New In Box
Agilestar – ONS-SE-2G-1530 – For Cisco – New In Box
Agilestar – ONS-SE-2G-1550 – For Cisco – New In Box
Agilestar – ONS-SE-2G-1570 – For Cisco – New In Box
Agilestar – ONS-SE-2G-1590 – For Cisco – New In Box
Agilestar – ONS-SE-2G-1610 – For Cisco – New In Box
Agilestar – DWDM-XENPAK-36.?61 -For Cisco – New in Box
Agilestar – DWDM-X2-30.33 – For Cisco -10GBASE-DWDM
Agilestar – DWDM-X2-31.12 – For Cisco -10GBASE-DWDM
Agilestar – DWDM-X2-31.90 – For Cisco – 10GBASE-DWDM
Agilestar – DWDM-X2-32.68 – For Cisco – 10GBASE-DWDM
Agilestar – DWDM-X2-34.25 – For Cisco – 10GBASE-DWDM
Agilestar – DWDM-X2-35.04 – For Cisco – 10GBASE-DWDM
Agilestar – DWDM-X2-35.82 – For Cisco – 10GBASE-DWDM
Agilestar – DWDM-X2-36.61 – For Cisco – 10GBASE-DWDM
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