The Netronix modules have implemented serial data transmission protocol. During the data transmission module sends command frame, and after execution of the command by this device, it receives response frame. In both frames, there is a parameter field, by mean of which devices exchange the data. Additionally in the command frame, there is always an operation code byte, by means of which message is transmitted to the command sending device informing, that the command has been performed successfully.
In the most simply mode of operation, in case of event appears defined for the module, it sends response frame automatically.