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5.
Communication via SMS messages
It is possible to control and monitor the device operation remotely via the special SMS
messages, which are being sent to the modem phone number. The user can select phone numbers,
from which the SMS messages are accepted by the modem. The factory configuration doesn’t
restrict the phone numbers for any incoming SMS messages that means any SMS messages are
accepted regardless of the sender phone number. Phone numbers restriction can be done with
the
program for data loggers
Settings of the program for data loggers to use it with the
Generally, SMS command messages aren’t case sensitive and the space serves as a
parameter separator.
If the accepted command isn’t supported or it hasn’t a correct syntax or parameters, the
modem will send back an SMS message with a proper error description. This information will be
returned only three times in maximum. The fourth and every next incorrect command from the one
phone number is ignored until the incoming command will be correct again.
5.1. The query SMS messages
Using these messages, you can take the current measured values from the connected data
logger, the modem firmware version and the current modem state information.
5.1.1. The query about the current values
To take the current measured values from the connected data logger, send the SMS message
values
to the modem.
If a data logger Sxxxx or Rxxxx is connected to the modem, it will send back a SMS
message with the following contents:
data logger identification
– the user’s description of the data logger is displayed. If
this description isn’t set, the serial number of the data logger will be displayed. If the
total message length would exceed 160 characters, the serial number of the data logger
will be displayed instead of the description.
measured values of single quantities –
the channel number or channel description (if it
is set) is displayed, the measured value and the quantity unit follow.
The response message example:
Logger Store_13: Temp: 24.7C Hum: 45.5%RH DP: 12.1C
If a data logger Gxxxx is connected to the modem, it will send back a SMS message with the
following contents:
data logger location
– the user’s description of the data logger location is displayed. If
this description isn’t set, the serial number of the data logger will be displayed. If the
total message length would exceed 160 characters, the serial number of the data logger
will be displayed instead of the description.
