Digi International Inc XBEEPRO2 Manuel D’Utilisation

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XBee®/XBee‐PRO® ZB RF Modules 
© 2011 Digi International, Inc.
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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 to use the explicit receive API frame (0x91) when RF data packets are 
received.   This is required if the application needs indication of source or destination endpoint, cluster ID, and/
or profile ID values used in received ZigBee data packets. ZDO messages can only be received if AO=1.