描述
硬件組態(tài)和存儲(chǔ)器概念
裝載存儲(chǔ)器是一個(gè)可編程模塊,它包括建立在編程設(shè)備上的裝載對(duì)象(邏輯塊、數(shù)據(jù)塊和其他信息),它可以是存儲(chǔ)器卡或內(nèi)部集成的ram。存儲(chǔ)器卡一般有兩種,其中,當(dāng)采用ram存儲(chǔ)器卡時(shí),系統(tǒng)必須配備電池,當(dāng)采用flasheprom存儲(chǔ)器卡時(shí),則斷電不會(huì)丟失,但內(nèi)部ram中的數(shù)據(jù)仍需電池保持。
工作存儲(chǔ)器僅包含和運(yùn)行時(shí)間使用的程序和數(shù)據(jù),ram工作存儲(chǔ)器集成在cpu中,通過(guò)后備電池保持。系統(tǒng)存儲(chǔ)器包括過(guò)程映象輸入和輸出表(pii,piq),位存儲(chǔ)器,定時(shí)器,計(jì)數(shù)器和局部堆踐。保持存儲(chǔ)器是非揮發(fā)的ram,即使沒(méi)有安裝后備電池也可用來(lái)保持某些數(shù)據(jù),設(shè)置cpu參數(shù)時(shí)要指定保持的區(qū)域。
從上述概念可知,假如我們?cè)诰€修改程序,被修改的塊存放在工作存儲(chǔ)器中,當(dāng)把程序上載到編程器時(shí),就從工作存儲(chǔ)器傳到編程器。由于斷電會(huì)導(dǎo)致ram數(shù)據(jù)的丟失,所以假如要安全保存被修改的程序,就必須保存在feprom或硬盤(pán)上。
硬件組態(tài)和參數(shù)分配
組態(tài)就是指在硬件組態(tài)的站窗口中分配機(jī)架、塊可分布式i/o,可從硬件目錄中選擇部件;參數(shù)分配就是建立可分配參數(shù)模塊的特性,例如啟動(dòng)特性、保持區(qū)等;設(shè)定組態(tài)就是設(shè)定好的硬件組態(tài)和參數(shù)分配;實(shí)際組態(tài)指已存在的實(shí)際組態(tài)和參數(shù)分配,一般是在已裝配的系統(tǒng)中,從plc的cpu中讀出來(lái)的。
歐美品牌停產(chǎn)的,常用的“PLC”備品備件
我司產(chǎn)品應(yīng)用于以下領(lǐng)域:
1,《發(fā)電廠DCS監(jiān)控系統(tǒng)》
2,《智能平鋼化爐系統(tǒng)制造》
3,《PLC可編程輸送控制系統(tǒng)》
4,《DCS集散控制系統(tǒng)》
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5,《智能型消防供水控制系統(tǒng)》
6,《化工廠藥液恒流量計(jì)算機(jī)控制系統(tǒng)》
7,《電氣控制系統(tǒng)》造紙,印染生產(chǎn)線,變電站綜合自動(dòng)化控制系列
本特利,英維思,伍德沃德,??怂共_、西屋、瑞恩、施耐德莫迪康、ABB、AB、西門(mén)子、摩托羅拉、GE發(fā)那科、安川、博世力士樂(lè),ACSO,力士樂(lè)等各大品牌的DCS系統(tǒng)配件,機(jī)器人系統(tǒng)配件,大型伺服系統(tǒng)備件。
ONEAC FT1115 MRC ECLIPSE STAR 120V 12A AC-POWER SUPPLY
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YASKAWA AC BRUSHLESS MOTOR SERVO,SGMP-01U314CM
EMOTEQ BRUSHLESS DC SERVO MOTOR HS01001-A02-HGE
YASKAWA BRUSHLESS AC SERVO MOTOR,SGMP-01U314CM
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ION SYSTEMS FLOW BAR CONTROLLER,100VAC,1/4 A
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