Instructions
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b) ADC Input
The ADC input can measure voltages from 0 to 14 V/DC.
The voltage to be measured is connected to the middle input (ADC) and the right input (minus).
An auxiliary voltage of +4 V/DC is output at the left terminal (+).
The GSM module can trigger a message by SMS above and below a voltage set. The threshold
value is entered in millivolt (mV).
Proceed as follows for configuration:
• Open the control software.
• Enter a message text in „1 ADC input“.
• Determine the threshold value, e.g. 1.0 V (1.0 V = 1000 mV).
• Check „is higher“.
• Select (as already described several times) the phone number of your mobile phone (check).
• Send the changes to the GSM module under „Communication“ by clicking the button „Send“.
• Wait for at least one minute, then apply a voltage between 1 and 14 V/DC to the
ADC input terminals (figure 1, item 2) (e.g. from a 1.5 V dry battery).
Always observe correct polarity. Never apply any voltage exceeding
14 Volt!
• Now you can trace the status in the control software under „Communication“.
• The display must change to the voltage value applied to the input behind „ADC“.
• Once the voltage exceeds 1.0 V (value above „1000“), the message „SMS sent“ must appear; the entered message text must be sent to the
mobile phone by SMS.
This ADC is meant,e.g. for an analogue fill level indicator; the module can then issue a warning message before the supply container becomes
empty or flows over. You may top up the container to the desired volume for threshold value determination, read the output value in the status
and enter it into the software as a threshold.
Important!
Generally, the GSM module only indicates changes that persist for at least one second or undercut/exceed the threshold value.
If you have sent a new configuration to the GSM module, the GSM module will restart automatically. The GSM module takes about one
minute after restart before it can perform any changes to the sensors or commands. This waiting time must be strictly observed! You
have about one minute after restart to apply a voltage without sending a text message and/or email.