廈門仲鑫航自動化設備有限公司
主營產品: 模塊卡件 |
廈門仲鑫航自動化設備有限公司
主營產品: 模塊卡件 |
參考價 | 面議 |
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更新時間:2018-05-15 17:41:42瀏覽次數:1407
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3D04153G07西屋
3D04153G07西屋
DCS經過多年的發展,積累了大量的高級算法模塊。例如NETWORK6000+具有的設備級模塊,在一個模塊中集中完成了面向設備的基本控制和故障報警功能,在網絡通訊中也已此模塊為單位進行傳遞,大大提高了軟件開發的效率。一個設備極模塊相當于0.5K的梯形圖邏輯量,PLC要完成同樣的功能,就要煩瑣得多了。
在下載修改、運行調試、遠程診斷方面,PLC缺乏解決方案。而DCS從一設計之初就是從系統需要的角度出發的,有著多年積累的完善的解決方案。以NETWORK6000+DCS為例,系統既可以在線修改控制策略,也可以在線下載控制策略,修改和下載過程中,對系統的正常運行沒有影響。NETWORK6000+DCS有完善的虛擬DCS功能,不但可以用于組態邏輯的驗證,而且能夠構建成完整的虛擬DCS與模型相連,完成系統的仿真調試。NETWORK6000+DCS具有完善的安全措施,提供基于廣域網的遠程調試方案。
在網絡方面,DCS網絡是整個系統的中樞神經,和利時公司的MACS系統中的系統網采用的是雙冗余的100Mbps的工業以太網,采用的標準協議TCP/IP。它是安全可靠雙冗余的高速通訊網絡,系統的拓展性與開放性更好.而PLC因為基本上都為個體工作,其在與別的PLC或上位機進行通訊時,所采用的網絡形式基本都是單網結構,網絡協議也經常與標準不符。在網絡安全上,PLC沒有很好的保護措施。我們采用電源,CPU,網絡雙冗余.
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