描述
DCS控制系统DI点数如何计算
DI指进入DCS系统或PLC的开关量输入信号,DI输入必须是无源触点、TTL或CMOS电平信号,DI进入DCS系统或PLC后通常会接通DC24V或者DC48V查询电压。
Brad Harrison DN4100 Multi-Port Interconnect System
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