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施耐德 AS-BVIC-200

???用戶程序存儲 區(qū)存放用戶編制的用戶程序。不同類型的PLC，其存儲容量各不相同。 }?C、電源? PLC的電源在整個系統(tǒng)中起著十分重要的作用。如果沒有 一個良好、可靠得電源系統(tǒng)是無法正常工作的，因此PLC的制造商對電源 的設計和制造也十分重視。一般交流電壓波動在+10%(+15%)的范圍內， 可以不采取其它措施而將PLC直接接到交流電網(wǎng)上去。?3、PLC的工作 原理?

施耐德 AS-BVIC-200

聯(lián)系人：郭先生
聯(lián)系電話：18971415643《優(yōu)先》
座機：027-83238871
傳真：207-61537051
QQ：810334512《優(yōu)先》

施耐德 AS-BVIC-200

無論在中國的用戶多還是少，這些DCS系統(tǒng)的共同特點是人機界面 的許多部件也都是從第三方購買的，不是自己生產的，現(xiàn)在大部分部件 都已經(jīng)停止生產。?如有的DCS操作站主機采用DEC公司的VAX機或α機 ，在96年DEC已被COMPAQ公司兼并，到現(xiàn)在已經(jīng)停產5年，不僅機器不生 產，而且連芯片也不生產。如果現(xiàn)在仍然進口這樣的DCS，備件將會成為 很困難的事情。????又如操作站使用的硬盤，與硬盤的接口大都是S T412接口(像ST225、ST4096、ST4097、XT1085等)或IDE接口，這種硬盤 體積大，但容量小。目前已停產多年。

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