A06B-6066-H222 發(fā)那科

A06B-6066-H222

電網調度 電網調度自動化是一個總稱，由于各級調度中心的任務不同，調度自動 化系統的規(guī)模也不同，但無論哪一級調度自動化系統，都具有一種最基 本的功能，就是監(jiān)視控制和數據收集系統，又稱SCADA系統功能（Super visory Control And Data Acquisition）。

A06B-6066-H222

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

A06B-6066-H222

集線器的工作原理： 集線器并不處理或檢查其上的通信量，僅通過將一個端口接收的信號重 復分發(fā)給其他端口來擴展物理介質。所有連接到集線器的設備共享同一 介質，其結果是它們也共享同一沖突域、廣播和帶寬。因此集線器和它 所連接的設備組成了一個單一的沖突域。如果一個節(jié)點發(fā)出一個廣播信 息，集線器會將這個廣播傳播給所有同它相連 的節(jié)點，因此它也是一 個單一的廣播域。

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