LX20G_Manual_en_v2.1
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9.
RECEIVING OF SMS MESSAGE
GPRS module receives specially prepared SMS. If received SMS is not correct it will
be automatically cancelled and device will not operate any action.
As mentioned above the device may operate in two modes:
with a new encoded protocol
with PX protocol
Depending on operation mode there are varied commands available to control the
device.
9.1.
NEW PROTOCOL
The following format of message is acceptable allowing to send some commends
with one SMS (every command shall be separated with SPACE ):
SERVICE CODE
█
COMMAND
█
COMMAND
█
..........
Where:
SERVICE CODE
- device service code
█
- SPACE
COMMAND
- order (see the table below)
List of commands
DISC
Disconnects active TCP connection.
KILL
Reset modem; after execution of command a confirmation
is sent.
RESET
Reset device. Note: all unsent events will be lost except
events from dialer’s buffor.
OUT=outNr, state
Turn on or turn off outputs.
outNr
specifies output number
(0 for OUT1, 1 for OUT2, 2 for OUT3),
state
specifies
requested output state (0 – switched off, 1 – switched on).
Examples:
OUT=2,0
– switches off OUT3 output
OUT=2,1
– switches on OUT3 output
CMD= [timeout],
command
Issues AT command to GSM modem and sends response
back. Optional
timeout
parameter defines time for modem
response. Time determined in seconds and ranges from 1-
30 seconds. If
timeout
isn’t specified, 3 seconds is
assumed.
DESC
Returns device description, serial number (hexadecimal
number) and firmware version.
GETSTATUS
Download device status. Command sends text back
according to definition from chapter
GETPARAM=
parameter_name
Gets inquired parameter :SERVER, PORT, APN, UN, PW,
DNS1, DNS2, SMS, SMSPERIOD
GETCFG
Gets primary communication parameters of device in form:
SERVER:PORT,APN UN PW,DNS1
APN=apn
Access point to GPRS network. Parameter should be
obtained from mobile network operator. If APN address
contain space sign put it with “” e.g. “my apn”.
