API operation API frames
XBee/XBee-PRO ZigBee RF Modules User Guide 119
0x00 = Broadcast radius
0x00 = Options
0x547832436F6F7264 = Data payload (“Tx2Coord”)
0xFC = Checksum
Explicit Addressing ZigBee Command frame
Frame type: 0x11
Allows ZigBee application layer fields (endpoint and cluster ID) to be specified for a data transmission.
Similar to the ZigBee Transmit Request, but also requires ZigBee application layer addressing fields to be
specified (endpoints, cluster ID, profile ID). An Explicit Addressing Request API frame causes the module to send
data as an RF packet to the specified destination, using the specified source and destination endpoints, cluster
ID, and profile ID.
The 64-bit destination address should be set to 0x000000000000FFFF for a broadcast transmission (to all
devices). The coordinator can be addressed by either setting the 64-bit address to all 0x00s and the 16-bit
address to 0xFFFE, OR by setting the 64-bit address to the coordinator's 64-bit address and the 16-bit address to
0x0000. For all other transmissions, setting the 16-bit address to the correct 16-bit address can help improve
performance when transmitting to multiple destinations. If a 16-bit address is not known, this field should be set
to 0xFFFE (unknown). The Transmit Status frame (0x8B) will indicate the discovered 16-bit address, if successful.
The broadcast radius can be set from 0 up to NH. If set to 0, the value of NH specifies the broadcast radius
(recommended). This parameter is only used for broadcast transmissions.
The maximum number of payload bytes can be read with the NP command.
Note If source routing is used, the RF payload will be reduced by two bytes per intermediate hop in the source
route.
Frame Fields Offset Example Description
Start Delimiter
00x7E
Length
MSB 1 0x00
Number of bytes between the length and the checksum
LSB 2 0x1A
Frame-specific
Data
Frame Type
30x11
Frame ID
40x01
Identifies the UART data frame for the host to correlate with a
subsequent ACK (acknowledgment). If set to 0, no response is
sent.
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