XBP24-BPIT-004 Digi International, XBP24-BPIT-004 Datasheet - Page 16

• Manufacturer Part Number: XBP24-BPIT-004
• Description: Zigbee / 802.15.4 Modules XBee-PRO Znet 2.5 PCB Antenna
• Manufacturer: Digi International

Specifications of XBP24-BPIT-004

• Rohs: yes
• Frequency Band: 2.4 GHz
• Line Of Sight Range: 100 m
• Data Rate: 250 Kbps
• Sensitivity: - 102 dBm
• Operating Supply Voltage: 3 V to 3.4 V
• Output Power: 63 mW
• Antenna Connector Type: PCB
• Maximum Operating Temperature: + 85 C

XBee ZNet 2.5/XBee‐PRO ZNet 2.5 ZigBee OEM RF Modules v1.x4x
2.2.3. Receive Mode
2.2.4. Command Mode
AT Command Mode
When data is transmitted from one node to another, a network-level acknowledgement is
transmitted back across the established route to the source node. This acknowledgement packet
indicates to the source node that the data packet was received by the destination node. If a
network acknowledgement is not received, the source node will re-transmit the data.
It is possible in rare circumstances for the destination to receive a data packet, but for the source
to not receive the network acknowledgment. In this case, the source will retransmit the data,
which could cause the destination to receive the same data packet multiple times. The XBee ZNet
2.5 modules do not filter out duplicate packets. The application should include provisions to
address this potential issue
See Data Transmission and Routing in chapter 3 for more information.
If a valid RF packet is received, the data is transferred to the serial transmit buffer.
To modify or read RF Module parameters, the module must first enter into Command Mode - a
state in which incoming serial characters are interpreted as commands. Refer to the API Mode
section in Chapter 7 for an alternate means of configuring modules.
To Enter AT Command Mode:
Default AT Command Mode Sequence (for transition to Command Mode):
Once the AT command mode sequence has been issued, the module sends an "OK\r" out the
DOUT pin. The "OK\r" characters can be delayed if the module has not finished transmitting
received serial data.
When command mode has been entered, the command mode timer is started (CT command), and
the module is able to receive AT commands on the DIN pin.
All of the parameter values in the sequence can be modified to reflect user preferences.
NOTE: Failure to enter AT Command Mode is most commonly due to baud rate mismatch. By default,
the BD (Baud Rate) parameter = 3 (9600 bps).
To Send AT Commands:
Figure 2‐05. Syntax for sending AT Commands
To read a parameter value stored in the RF module’s register, omit the parameter field.
The preceding example would change the RF module Destination Address (Low) to “0x1F”. To
store the new value to non-volatile (long term) memory, subsequently send the WR (Write)
command.
© 2008 Digi International, Inc.
Send the 3-character command sequence “+++” and observe guard times before and after the
command characters. [Refer to the “Default AT Command Mode Sequence” below.]
• No characters sent for one second [GT (Guard Times) parameter = 0x3E8]
• Input three plus characters (“+++”) within one second [CC (Command Sequence Character)
• No characters sent for one second [GT (Guard Times) parameter = 0x3E8]
Send AT commands and parameters using the syntax shown below.
parameter = 0x2B.]
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