Digi XBee, User Manual, Page: 100 / 307

Transmission, addressing, and routing Transmission timeouts
XBee/XBee-PRO® S2C ZigBee® RF Module 100
Field composition
0x0014 length
0x10 API ID (TX data)
0x01 Frame ID (set to a non-zero value to enable the TX-status response)
0x00000000 0000FFFF Broadcast definition (including sleeping end devices)
0xFFFE Required 16-bit address to send broadcast transmission
0x00 Broadcast radius (0 = max hops)
0x00 Tx options
0x54 78 44 61 74 61 ASCII representation of “TxData” string
0xAD Checksum (0xFF - SUM (all bytes after length))
Description
This transmission sends the string “TxData” as a broadcast transmission. Since the destination
address is set to 0xFFFF, all devices, including sleeping end devices can receive this broadcast.
If receiver application addressing is enabled, the XBee/XBee-PRO ZigBee RF Module reports all
received data frames in the explicit format (0x91) to indicate the source and destination endpoints,
cluster ID, and profile ID where each packet was received. Status messages like modem status and
route record indicators are not affected.
To enable receiver application addressing, set the AO command to 1 using the AT Command Frame -
0x08 as follows:
API frame
7E 0005 08 01 414F 01 65
Field composition
0x0005 length
0x08 API ID (AT command)
0x01 Frame ID (set to a non-zero value to enable AT command response frames)
0x414F ASCII representation of 'A','O' (the command being issued)
0x01 Parameter value
0x65 Checksum (0xFF - SUM (all bytes after length))
Description
Setting AO = 1 is required for the XBee/XBee-PRO ZigBee RF Module to use the Explicit Rx Indicator
frame - 0x91 when receiving RF data packets. This is required if the application needs indication of
source or destination endpoint, cluster ID, or profile ID values used in received ZigBee data packets.
ZDO messages can only be received if
AO = 1 .