XT09-SI-MESH Digi International, XT09-SI-MESH Datasheet - Page 17

• Manufacturer Part Number: XT09-SI-MESH
• Description: MODULE RF 900MHZ 1W 115K W/RPSMA
• Manufacturer: Digi International

Specifications of XT09-SI-MESH

• Frequency: 900MHz
• Modulation Or Protocol: FHSS, FSK
• Power - Output: 1W
• Sensitivity: -100dBm
• Voltage - Supply: 2.8 V ~ 5.5 V
• Current - Receiving: 80mA
• Antenna Connector: RP-SMA
• Operating Temperature: -40°C ~ 85°C
• Package / Case: Module
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Applications: -
• Memory Size: -
• Data Interface: -
• Data Rate - Maximum: -
• Current - Transmitting: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 602-1183

XTend™ RF Module ‐ Product Manual v2.x6x
AT Command Mode
Binary Command Mode
To Enter AT Command Mode:
Default AT Command Mode Sequence (for transition to Command Mode):
All of the parameter values in the sequence can be modified to reflect user preferences.
To Send AT Commands:
Figure 2‐09. Syntax for sending AT Commands
To read a parameter value stored in the module register, leave the parameter field blank.
The preceding example would change the module’s Destination Address to "0x1F". To store the
new value to non-volatile (long term) memory, the Write (ATWR) command must subsequently be
sent before powering off the module.
System 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.
To Exit AT Command Mode:
For an example of programming the RF module using AT Commands and descriptions of each config-
urable parameter, refer to the "RF Module Configuration" chapter [p19].
Sending and receiving parameter values using binary commands is the fastest way to change
operating parameters of the module. Binary commands are used most often to sample signal
strength [refer to DB (Received Signal Strength) parameter] and/or error counts; or to change
module addresses and channels for polling systems when a quick response is necessary. Since the
sending and receiving of parameter values takes place through the same serial data path as 'live'
data (received RF payload), interference between the two types of data can be a concern.
Common questions about using binary commands:
1.
2.
Send AT commands and parameters using the syntax shown below.
1.
2.
© 2010 Digi Internatonal, Inc.
• No characters sent for one second [refer to the BT (Guard Time Before) Command]
• Input three plus characters (“+++”) within one second
• No characters sent for one second [refer to the AT (Guard Time After) Command.]
• What are the implications of asserting CMD while live data is being sent or received?
[refer to the CC (Command Sequence Character) Command.]
Send the 3-character command sequence "+++" and observe guard times before and after
the command characters. [refer to ‘Default AT Command Mode Sequence’ below.] The ‘Ter-
minal’ tab (or other serial communications software) of the X-CTU Software can be used to
enter the sequence.
[OR]
Assert (low) the CONFIG pin and turn the power going to the module off and back on (or
pulse the SHDN pin).
[If the module is mounted to a Digi RS-232/485 Interface Board, the result can be achieved
by pressing the configuration switch down for 2 seconds.]
If no valid AT Commands are received within the time specified by CT (Command Mode
Timeout) Command, the module automatically returns to Idle Mode.
Send ATCN (Exit Command Mode) Command.
[OR]
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