Digi XBee-PRO 900 Instruction Manual page 34

XBee‐PRO® 900 OEM RF Modules
Start delimiter
0x7E
64-bit Source address (bytes 5-12)
Destination 64-bit (extended) address. Set
to 0xFFFF for broadcast.
16-bit Source network address (13-14)
Destination network address (if known). Set to 0xFFFE for
broadcast transmissions or if the destination network address
is not known.
Source endpoint (byte 15)
Endpoint of the source that initiated the
transmission
Destination endpoint (byte 16)
Endpoint of the destination the message is
addressed to.
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Explicit Rx Indicator
API Identifier Value:(0x91)
When the modem receives a RF packet it is sent out the UART using this message type (when
AO=1).
Explicit Rx Indicators
Length Frame Data
MSB LSB API-specific Structure
AP Identifier
0x91
1
2
3
4
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Checksum
1 Byte
Identifier specific data
cmdData
5
Cluster ID the packet was addressed
to.
Profile ID the packet was
6
addressed to. (Multiple profile IDs
not yet supported .)
7 0x01 – Packet Acknowledged
0x02 – Packet was a broadcast
packet
8
Up to 72 bytes.
Cluster ID (byte 17-18)
Profile ID (byte 19-20)
Options (byte 21)
RF data (byte 22-n)
34