6ES5464-8MD11

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描述

6ES5464-8MD11

我做DCS維護已經(jīng)有些年了，這些年新上的DCS的工作站幾乎清一色的全部采用了DELL的機器。記得九幾年的時候，DCS的上位機全部采用工控機，工作穩(wěn)定，直到現(xiàn)在還在工作?，F(xiàn)在不管那個廠商，不管是進口的還是國產(chǎn)的全部換用DELL的機器。DELL是做商用機，民用機和服務(wù)器的，雖然做工不錯，而且都經(jīng)過測試，但個人認(rèn)為不能和工控機相比?，F(xiàn)在DCS采用的機器基本上都是商用機，它的設(shè)計十分緊湊，機箱內(nèi)的空間十分狹窄。其次DELL的機器在機器的進風(fēng)口都沒有過濾設(shè)置（而且有的連機箱風(fēng)扇都沒有，由此看出不是為工業(yè)應(yīng)用所設(shè)計），如果現(xiàn)場粉塵大，對電腦的危害十分嚴(yán)重，工控機都有機箱風(fēng)箱，而且都有過濾網(wǎng)。第三，DELL機器的配置設(shè)計都以夠用為標(biāo)準(zhǔn)，幾乎沒有擴展性。如我公司現(xiàn)用的DELL機器，電源僅為145W，而且沒有多余的電源插頭，也沒有擴展如硬盤，光驅(qū)的空間，就連聯(lián)接IDE設(shè)備的IDE數(shù)據(jù)線都是只能接一個設(shè)備，且剛好夠長（由此可見DELL的精打細(xì)算，和工控機的不惜成本形成鮮明對比）！如果想外接一個硬盤進行數(shù)據(jù)備份只有下掉光驅(qū)或使用USB移動硬盤。DCS工作站一般安裝NT ?2000 XP操作系統(tǒng)，而這些系統(tǒng)都不支持MS-DOS（不可能會給你裝雙系統(tǒng)），用GHOST進行硬盤整個備份要用光盤引導(dǎo)系統(tǒng)，又要外掛硬盤存鏡像文件，這種情況下（沒有電源插頭，而且電源功率太少）只好把工作站硬盤拆到別的機器上做備份，十分麻煩。第四，DELL的機器因為不是為工業(yè)設(shè)計，清一色的沒有ISA插槽，PCI插槽一般只有二到三個。DCS設(shè)計一般采用雙冗余網(wǎng)絡(luò)，主板帶個網(wǎng)卡，另一個網(wǎng)卡占用一個PCI插槽，可用的只有一到二個。如果有的DCS的專用鍵盤要用擴展卡的話，可用的PCI就幾乎沒有了。第五，DELL的電腦機箱全部采用無螺絲設(shè)計，無關(guān)人員很容易打開機器造成隱患。而且電腦機箱的強度更是不能和工控機的機箱相比。DELL的機箱沒有軟驅(qū)和光驅(qū)的前擋板，電源和重啟鍵也沒有保護，容易誤操作，工控機都可以鎖起來。第六，DELL的電腦價格也不便宜，一般都在一萬至二萬多，不會比工控機便宜。第七，無一例外地使用19寸或21寸的大屏幕顯示器。一般都使用CRT顯示器，而操作人員使用時長時間觀察同一個畫面，顯示器很快就會被電子槍打出痕跡。液晶顯示器不會有這個問題，而且DELL的CRT顯示器一般為SONY代工的價格比17寸液晶顯示器要貴很多。雖然液晶顯示器有燈管壽命不太長的毛病，但為了長時間盯著屏幕看的操作人員著想還是應(yīng)該考慮采用液晶顯示器。

產(chǎn)品承諾：
保?證?全新原裝進口,
保?證?安全準(zhǔn)時發(fā)貨，
保?證售后服務(wù)質(zhì)量，
優(yōu)勢價格，大量現(xiàn)貨。

主營DCS系統(tǒng)配件
機器人系統(tǒng)配件
大型伺服系統(tǒng)配件
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PLC模塊，可編程控制器，CPU模塊，IO模塊，AI模塊，通訊模塊。AB/施耐德/ABB/GE/本特利/西屋/英維斯/霍尼韋爾/黑馬/FU克斯波羅

15天包退換 一年質(zhì)保 大量現(xiàn)貨? 國內(nèi)實力庫存商家


選擇深圳長欣，選擇放心，售后無憂大量現(xiàn)貨，當(dāng)天順豐發(fā)貨！
主營：本特利，英維思，伍德沃德，福克斯波羅、西屋、瑞恩、施耐德莫迪康、ABB、AB、西門子、摩托羅拉、GE發(fā)那科、安川、博世力士樂，ACSO，力士樂等各大品牌的DCS系統(tǒng)配件，機器人系統(tǒng)配件，大型伺服系統(tǒng)備件。

先介紹幾點經(jīng)驗。
1、先通讀一遍“系統(tǒng)手冊”（不管能不能看懂，先了解個大概，以便學(xué)習(xí)編程時查找）；
2、由位控邏輯入手，逐漸增加定時、計數(shù)等條件，把或、與、非關(guān)系理順；
3、進而練習(xí)整數(shù)運算、實數(shù)運算、類型轉(zhuǎn)換；
4、量程轉(zhuǎn)換、PID調(diào)節(jié)回路的建立及P、I、D參數(shù)的理解（最好是有個物理回路驗證，比如變頻器+電機+測速傳感器）；
5、循環(huán)、順序、跳轉(zhuǎn)等程序控制（盡量避免跳轉(zhuǎn)，非跳不可時也是跳的越近越好）；
6、中斷、通訊、位置控制....

本人以ABB工業(yè)機器人配件DSQC系列和Motorola MVME系列，GE 卡件 模塊 驅(qū)動器系列為主攻。各位電工朋友可根據(jù)自己的條件選擇適合自己的PLC品牌，由于PLC的基本框架大同小異，學(xué)會一種至于其它的學(xué)習(xí)起來也就簡單了。

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