Automatic phone call, sms or email when a Modbus TCP register is changing state?

Last year I developed an android alarm system which called, send SMS or email automatically whenever an ONVIF camera detect motion. Last month I read about modbus TCP old technology. So I put that into my code so that a change of state of a Coil, Input or register could trigger an alarm as well. Before I put more effort I like to ask whether it might be useful. Here is the link of the modbus TCP android modbus TCP