D T 5 0 - M C O M M A N D R E F E R E N C E G U I D E 1 . 1 P a g e
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6.1.4 Set to factory defined configuUFACTORY
AT Command
Description
AT+UFACTORY
Reset to factory defined defaults. A reboot is
required before using the new settings.
Response
Description
OK
Successful response.
6.1.5 Circuit 108/2 (DTR) behavior &D
AT Command
Description
AT&D[<value>]
Controls the behavior of RS232 circuit 108/2 - Data
Terminal Ready (DTR) - on
changes between ASSERTED (logical 0 on UART_DSR
signal) and DEASSERTED
(logical 1 on UART_DSR signal) states.
The DTR line is connected to the DSR pin on the
module.
Response
Description
OK
Successful response.
ERROR
Error response if <value> is invalid.
Parameter
Description
value
0: DTR line is ignored.
1: (default and factory default value): Upon an
ASSERTED to DEASSERTED transition
of the DTR line, in data mode, the DCE enters the
command mode and issues an OK result code.
2: Upon an ASSERTED to DEASSERTED transition of
the DTR line, in data mode, the
DCE performs an orderly disconnect of all the radio
links and peer connections. No
new connections will be established while the DTR
line remains DEASSERTED.
6.1.6 DSR Override &S
AT Command
Description
AT&S[<value>]
Selects how the module will control RS232 circuit
107 - Data Set Ready (DSR) between ASSERTED
(logical 0 on signal UART_DTR) and DEASSERTED
(logical 1 on signal UART_DTR) states. The DSR line is
connected to the DTR pin on the module.