当主设备发送的是广播请求时，则从设备没有响应信息发送。RTU从处理时间在查询结束到响应查询开始的这一段时间叫做从设备处理时间。-个PACSystem从设备的设备处理时间取决于控制器通讯窗口时间和扫描时间。RTU请求只有在控制器通讯窗口里被处理。在正常扫描模式下

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