由于C60有-套IEC 60870-5-104數(shù)據(jù)交換緩存器,所有在一個(gè)時(shí)間內(nèi)只有一個(gè)主機(jī)可以與C60進(jìn)行活動(dòng)的通訊。對(duì)于有些情況下，在一種“熱備用狀態(tài)”結(jié)構(gòu)中,第二個(gè)主機(jī)也是活動(dòng)的,如果只要備用主機(jī)是活動(dòng)狀態(tài)，它就發(fā)送IEC 60870-5-104激活試驗(yàn)格式信息，那么C60支持第二套IEC 60870-5-104連接。

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