XBP24-DMWIT-250 Digi International, XBP24-DMWIT-250 Datasheet - Page 14

• Manufacturer Part Number: XBP24-DMWIT-250
• Description: XBEE-PRO MESH 2.4 EXTENDED
• Manufacturer: Digi International
• Series: XBEE-PRO™r

Specifications of XBP24-DMWIT-250

• Frequency: 2.4GHz
• Data Rate - Maximum: 250kbps
• Modulation Or Protocol: ISM
• Applications: General Purpose
• Power - Output: 18dBm
• Sensitivity: -100dBm
• Voltage - Supply: 2.8 V ~ 3.4 V
• Current - Receiving: 55mA
• Current - Transmitting: 250mA
• Data Interface: PCB, Through Hole
• Antenna Connector: On-Board, Wire Whip
• Operating Temperature: -40°C ~ 85°C
• Package / Case: Module
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Memory Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: Q4542387

XBee/XBee‐PRO DigiMesh 2.4 RF Modules
Receive Mode
Command Mode
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 for an alternate means of configuring mod-
ules.
NOTE: Failure to enter AT Command Mode is most commonly due to baud rate mismatch. Ensure the ‘Baud’ setting on
the PC Settings” tab matches the interface data rate of the RF module. By default, the BD parameter = 3 (9600 bps).
To Enter AT Command Mode:
Send the 3-character command sequence “+++” and observe guard times before and after the command charac-
ters. [Refer to the “Default AT Command Mode Sequence” below.]
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.
To Send AT Commands:
Send AT commands and parameters using the syntax shown below.
The preceding example would change the RF module Destination Address (Low) to “0x1F”.
For modified parameter values to persist in the module’s memory after a reset, changes must be saved using the WR
(Write) Command. Otherwise, parameters are restored to previously saved values after the module is reset.
Command Response When a command is sent to the module, the module will parse and execute the command.
Upon successful execution of a command, the module returns an “OK” message. If execution of a command results
in an error, the module returns an “ERROR” message.
Applying Command Changes
Any changes made to the configuration command registers through AT commands will not take effect until the
changes are applied. For example, sending the BD command to change the baud rate will not change the actual
baud rate until changes are applied. Changes can be applied in one of the following ways:
AT Command Mode
• No characters sent for one second [GT (Guard Times) parameter = 0x3E8]
• Input three plus characters (“+++”) within one second [CC (Command Sequence Character) parameter =
• No characters sent for one second [GT (Guard Times) parameter = 0x3E8]
• The AC (Apply Changes) command is issued.
• AT command mode is exited.
Syntax for sending AT Commands
0x2B.]
To read a parameter value stored in the RF module’s register, omit the parameter field.
© 2010 Digi International, Inc.
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