6FC5203-0AF23-1AA0原裝型號
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simatic s7-400h 具有以下功能：
出現(xiàn)故障時，能夠無擾切換
集成故障檢測功能；提前檢測故障，避免影響生產(chǎn)過程
在線維護(hù)，即可在工廠運(yùn)行期間，更換故障組件
組態(tài)更改，即可在工廠運(yùn)行期間，進(jìn)行工廠擴(kuò)容
自動事件同步
高可用性通信
冗余連接i/o 設(shè)備
s7-400 pnh cpu的同步模塊分為兩種，一種用于最長10m 的 foc patch 光纖，另一種用于最長10km 的單模全雙工 lc/lc 光纖（9/125 μ）。
冗余系統(tǒng)的同步光纖分為1m、2m、10m 和10km 四種。同步速率達(dá)到400mbps。
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