A request command is enclosed in the data or message section of the underlying network packet. It requests the contents of registers in the device containing signal data of a device.
底层网络包的数据或消息区域封装了一个请求命令，它请求设备中包含设备信号数据的寄存器的内容。
2
Fortunately, XM has provided their customers with a simple way to request a REFRESH signal to be sent to a customer's radio.
幸运的是，XM公司提供了一个简单的方法来刷新请求信号发送到客户的无线电他们的客户。
3
When can not guarantee that request, are given voice, the alarm signal light.