The Command-Ack-Response-Data protocol scheme is used for command that requires a response and data from Neblina. If a command is received and processed succesfully by Neblina, Neblina will reply with an acknowledge packet and then reply with a response packet in a synchronous way. In addition, Neblina will reply one or more data packet in an asynchronous way until command completion or disable.

In cases where a command is received successfully but an error occured when processing the command, Neblina will reply with an error packet (following the Command-Error protocol scheme).