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AT commands
CC (Command Character)
The character value the device uses to enter Command mode.
The default value (0x2B) is the ASCII code for the plus (+) character. You must enter it three times
within the guard time to enter Command mode. To enter Command mode, there is also a required
period of silence before and after the command sequence characters of the Command mode
sequence (GT + CC + GT). The period of silence prevents inadvertently entering Command mode.
Parameter range
0 - 0xFF
Recommended: 0x20 - 0x7F (ASCII)
Default
0x2B (the ASCII plus character: +)
CT (Command Mode Timeout)
Sets or displays the Command mode timeout parameter. If a device does not receive any valid
commands within this time period, it returns to Idle mode from Command mode.
Parameter range
2 - 0x1770 (x 100 ms)
Default
0x64 (10 seconds)
GT (Guard Times)
Set the required period of silence before and after the command sequence characters of the
Command mode sequence (GT + CC + GT). The period of silence prevents inadvertently entering
Command mode.
Parameter range
0x2 - 0x3E8 (x 1 ms)
Default
0x3E8 (one second)
Firmware version/information commands
The following AT commands are firmware version/information commands.
VR (Firmware Version)
Reads the firmware version on a device.
Parameter range
0 - 0xFFFF [read-only]
Default
Set in the factory
XBee®/XBee-PRO SX RF Module User Guide
Firmware version/information commands
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