INSYS EDGE 5.0 Series, Manual

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Functions INSYS GPRS/EDGE 5.0 serial
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Note:
The service center phone number must be written in international
format, e.g. for a German provider starting with “+49”.
6.7 Digital Inputs and Potential-Free Outputs
The INSYS GPRS/EDGE 5.0 serial has digital inputs and outputs. The outputs can be
switched via AT commands to control external functions. The inputs can be used to trig-
ger an action of the INSYS GPRS/EDGE 5.0 serial. The inputs can be used to dial a connec-
tion to an AutoDial destination or to send an SMS. The action is triggered through a
change of the input from HIGH (inactive) to LOW/GND (active). The level change is ac-
cepted after 0.3 seconds, i.e. the input is debounced. In addition, there is the possibility
for IO tunnelling, i.e. transmit the input states via a TCP connection to another INSYS
GPRS/EDGE 5.0 serial or a server.
6.7.1 Automatic SMS Dispatch Via Switch Input
Note
To enable the automatic sending of SMS messages, the device must
know the number of a SMS service center. Make sure that the ser-
vice center number is entered and stored in the device via AT com-
mands.
The INSYS GPRS/EDGE 5.0 serial can send a predefined SMS via a level change of the digi-
tal inputs UI. The SMS is triggered through the connection of the input with ground
(GND). The alarm input is on HIGH potential by a pull-up resistor in open state (inactive).
The SMS is triggered through a change of the input from HIGH (inactive) to LOW/GND
(active). The level change is accepted after 0.3 seconds (debounce).
To resend the SMS, the input must be set to HIGH (inactive). If the input state at both
inputs changes at the same time, the input state 1 will be evaluated first. If the state
changes at the other input while a state change at one input is being processed, the
event is stored and processed later.