Operate in API mode API serial exchanges
XBee®-PRO 900HP/XSC RF Modules
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Transmit and Receive RF data
The following image shows the API frames exchange that take place at the UART interface when
sending RF data to another device. The transmit status frame is always sent at the end of a data
transmission unless the frame ID is set to 0 in the TX request. If the packet cannot be delivered to the
destination, the transmit status frame indicates the cause of failure.
The received data frame type (0x90 or 0x91) is determined by the AO command.
Remote AT commands
The following image shows the API frame exchanges that take place at the serial interface when
sending a remote AT command. The device does not send out a remote command response frame
through the serial interface if the remote device does not receive the remote command.
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