ARF868 Radio Modems - User guide version V1.8.1
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of 26
AT/V
Display the firmware version
Example : TW_AB_2.3.00_AA_B_1.2.0
ATR
Restore the content of registers with default values.
This command must be followed by an AT&W
command and a module reset to ensure that all
parameters have been applied.
«O»<cr> if operation OK
«E»<cr> if error
ATT00
Enables test mode: Sends a predefined frame (see
note1).
Exit test mode ATT00 : ESC (0x1B)
«O»<cr> if operation OK
«E»<cr> if error
ATT01
Enables test mode: Reception and control
frames received in opposite to ATT00 (see note1).
Exit test mode ATT01: ESC (0x1B)
«O»<cr> if operation OK
«E»<cr> if error
ATT02
Starts the Scan Free mode
«Returns for each channel, its number and RSSI value associated :
Cxxx=-090dBm
<cr><lf>
ATT03 <c> <t>
Scan of channel «c», during a «t» period , with :
-
<c> value on three digits.
-
<t> value from 1 to 999, by step of 1s
The command returns three values of RSSI: mini, medium and maximum.
ATX3
Automatic registers programming for X3Pro modems
compatibility :
-
S210 = 3 -> 9600 bauds
-
S215 = 1 -> RS232
-
S220 = 1 -> Addressed
-
S252 = 0 -> Source address = 0
Other registers to their default values.
«O»<cr> if operation OK
«E»<cr> if error
AT&W
Save the register configuration in E2PROM.
«O»<cr> if operation OK
«E»<cr> if error
AT&RST
Restart the modem
«O»<cr> if operation OK
«E»<cr> if error
AT0
Exit command mode
«O»<cr> if operation OK
«E»<cr> if error
Example of a series of commands and corresponding replies as one could see them on a terminal:
Syntax of the Command
Description
Syntax of the response to the next line
+++
Request for entry into command mode
CM
ATS254=3
Request for RF data rate at 9.6kbps
O
ATS200=9
Request for channel selection = 9
E
-> invalid channel !
ATS200=527
Request for channel selection = 527
O
ATS231=0
Request for RF power at 27dBm
O
ATS200 ?
Returns S200 register value
S200=527
ATS231 ?
Returns S231 register value
S231=0
AT&W
Storage request of the registers status
W
(the selected channel is not available at 9.6kbps RF data rate)
The value storage will not be performed.
ATO
Request to exit command mode
W
(the selected channel is not available at 9.6kbps RF data rate)
The Exit will not be performed.
Interpretation of the above example: the user wished to save a new radio configuration (channel 527, power 27dBm) after having made a
parameter error (reply
E
) and an unauthorised configuration request (reply
W
). The modem allows neither the saving of this invalid configuration
nor the use of the product in the communication mode.
5.3. Description of registers
When switching on the ARF868 modem operates according to the last configuration saved (factory configuration if its the first switching on, or
if this configuration has not been changed).
Modification commands, type
ATS
<
n
>=<
m
> or
ATR
allow the content of registers to be modified. The product is usable with each new
configuration as long as it is not disconnected.
On the other hand the modified values will be applied next time the modem is switched on only if they have been saved
AT&W
command
