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The hardware sampling unit of the monitor system is constituted by the data gathering module, including digital input module and analog input module, which are connected by the RS-485 main line form.
系统的硬件采样部分由数据采集模块(包括模拟量输入模块和数字量输入模块)构成，各模块间以RS - 485总线形式进行连接。
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