XBP24-PKI-001-RA Digi International/Maxstream, XBP24-PKI-001-RA Datasheet - Page 16

• Manufacturer Part Number: XBP24-PKI-001-RA
• Description: MODULE 802.15.4 RS-232 ANT
• Manufacturer: Digi International/Maxstream
• Series: XBEE-PRO™r

Specifications of XBP24-PKI-001-RA

• Frequency: 2.4GHz
• Data Rate - Maximum: 250kbps
• Modulation Or Protocol: 802.15.4
• Applications: Home/Building Automation, Industrial Control, ZigBee™
• Power - Output: 0dBm
• Sensitivity: -92dBm
• Voltage - Supply: 2.8 V ~ 3.4 V
• Current - Receiving: 55mA
• Data Interface: Connector, Female DB-9
• Antenna Connector: RP-SMA
• Operating Temperature: -40°C ~ 85°C
• Package / Case: Module
• Memory Size: -
• Current - Transmitting: -
• Other names: Q3255595

© 2008 Digi International, Inc.
XBee‐PRO PKG‐R® RS‐232 RF Modem – 802.15.4 ‐ Product Manual v1.xAx
3.3. Addressing
3.3.1. Unicast Mode
3.3.2. Broadcast Mode
Every RF data packet sent over-the-air contains a Source Address and Destination Address field in
its header. The RF modem conforms to the 802.15.4 specification and supports both short 16-bit
addresses and long 64-bit addresses. A unique 64-bit IEEE source address is assigned at the
factory and can be read with the SL (Serial Number Low) and SH (Serial Number High) commands.
Short addressing must be configured manually. A modem will use its unique 64-bit address as its
Source Address if its MY (16-bit Source Address) value is “0xFFFF” or “0xFFFE”.
To send a packet to a specific modem using 64-bit addressing: Set Destination Address (DL + DH)
to match the Source Address (SL + SH) of the intended destination modem.
To send a packet to a specific modem using 16-bit addressing: Set DL (Destination Address Low)
parameter to equal the MY parameter and set the DH (Destination Address High) parameter to ‘0’.
By default, the RF modem operates in Unicast Mode. Unicast Mode is the only mode that supports
retries. While in this mode, receiving modems send an ACK (acknowledgement) of RF packet
reception to the transmitter. If the transmitting modem does not receive the ACK, it will re-send
the packet up to three times or until the ACK is received.
Short 16-bit addresses. The modem can be configured to use short 16-bit addresses as the
Source Address by setting (MY < 0xFFFE). Setting the DH parameter (DH = 0) will configure the
Destination Address to be a short 16-bit address (if DL < 0xFFFE). For two modems to
communicate using short addressing, the Destination Address of the transmitter modem must
match the MY parameter of the receiver.
The following table shows a sample network configuration that would enable Unicast Mode
communications using short 16-bit addresses.
Table 3‐03. Sample Unicast Network Configuration (using 16‐bit addressing)
Long 64-bit addresses. The RF modem’s serial number (SL parameter concatenated to the SH
parameter) can be used as a 64-bit source address when the MY (16-bit Source Address)
parameter is disabled. When the MY parameter is disabled (set MY = 0xFFFF or 0xFFFE), the
modem’s source address is set to the 64-bit IEEE address stored in the SH and SL parameters.
When an End Device associates to a Coordinator, its MY parameter is set to 0xFFFE to enable 64-
bit addressing. The 64-bit address of the modem is stored as SH and SL parameters. To send a
packet to a specific modem, the Destination Address (DL + DH) on one modem must match the
Source Address (SL + SH) of the other.
Any RF modem within range will accept a packet that contains a broadcast address. When
configured to operate in Broadcast Mode, receiving modems do not send ACKs
(Acknowledgements) and transmitting modems do not automatically re-send packets as is the
case in Unicast Mode.
To send a broadcast packet to all modems regardless of 16-bit or 64-bit addressing, set the
destination addresses of all the modems as shown below.
Sample Network Configuration (All modems in the network):
NOTE: When programming the modem, parameters are entered in hexadecimal notation (without the
“0x” prefix). Leading zeros may be omitted.
• DL (Destination Low Address) = 0x0000FFFF
• DH (Destination High Address) = 0x00000000 (default value)
DH (Destination Address High)
DL (Destination Address Low)
MY (Source Address)
Parameter
RF Modem 1
0x01
0x02
0
RF Modem 2
0x02
0x01
0
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