INSYS GSM small 2.0
Functions
11.11.3
Alarm via DTR Control Line
The INSYS GSM small 2.0 can send a message or establish a data connection upon
activating the DTR control line of the serial interface (e.g. by opening a COM port at
a PC).
When using the alarm via DTR control line, we recommend to make
the setting
AT&D0
.
11.11.3.1
Sending an SMS via DTR Activation
The INSYS GSM small 2.0 can send an SMS when activating the DTR control line
of the serial interface. Only one attempt will be made to send a message.
Configuration with HSComm
In order to enable SMS dispatch upon DTR activation, select on the "Se-
rial interface" tab in the "Action on DTR activation" panel the "SMS" ra-
dio button.
In order to specify the number for the SMS dispatch, enter the number
into the "target number" field.
In order to specify the SMS test, enter the desired text into the "SMS
text" field.
Configuration with AT commands
Some presettings are required for this:
In order to configure SMS text mode, use
the command
AT+CMGF=1
In order to configure the number of the
short message center, use the command
Replace
<SMSCno>
with the number of the
short message center (SMS Center) in in-
ternational format in quotation marks (e.g.
"+49172…").
AT+CSCA=<“SMSCno“>
In order to delete the SMS at memory loca-
tion 1, use the command
This is made to ensure that the SMS con-
figured in the following is stored in memory
location 1.
AT+CMGD=1
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