A communication system configured for transmitting sensor values from N sensing sources (101... 104) to a control unit, N being an integer greater than 1, the system comprising: a first sensor interface device SID_1 being configured for sampling M sensing sources to obtain M sensor values related to M sensing sources, M being an integer greater than 0; and being configured for transmitting at an output of the first sensor interface device the M sensor values related to the M sensing sources using an asynchronous unidirectional protocol, characterized in that, the first sensor interface device SID_1 repeatedly and autonomously transmits a data group comprising the M sensor values; the communication system further comprises Y-1 intermediate sensor interface devices SID_i; Y being an integer greater than 1 and 2 ≤ i ≤ Y; an intermediate sensor interface device SID_i being configured for sampling P_i sensing sources (103... 104) to obtain sensor values related to the P_i sensing sources, P_i being an integer greater than 0; the intermediate sensor interface device SID_i further being configured for receiving at an input first data groups comprising data values related to Q_i sensing sources using the asynchronous unidirectional protocol, Q_i being an integer greater than 0; the intermediate sensor interface device SID_i further being configured for transmitting via an output second data groups comprising sensor values related to the P_i sensing sources and data values related to the Q_i sensing sources using the asynchronous unidirectional protocol; the input of intermediate sensor interface device SID_2 being coupled to the output of sensor interface device SID_1 and for i>2, the input of intermediate sensor interface device SID_i being coupled to the output of sensor interface device SID_i-1; the output of intermediate sensor interface device SID_Y being configured for transmitting third data groups, a third data group comprising sensor values related to the P_Y sensing sources of sensor interface device SID_Y and data values related to Q_Y sensing sources to an input of the control unit using the asynchronous unidirectional protocol, wherein P_Y+Q_Y=N, and wherein the data rate of first data groups comprising data values related to Q_i sensing sources at the input of the intermediate sensor interface device SID_i is higher than the data rate of second data groups at the output of the intermediate sensor interface device SID_i. a first sensor interface device SID_1 being configured for sampling M sensing sources to obtain M sensor values related to M sensing sources, M being an integer greater than 0; and being configured for transmitting at an output of the first sensor interface device the M sensor values related to the M sensing sources using an asynchronous unidirectional protocol, characterized in that, the first sensor interface device SID_1 repeatedly and autonomously transmits a data group comprising the M sensor values; the communication system further comprises Y-1 intermediate sensor interface devices SID_i; Y being an integer greater than 1 and 2 ≤ i ≤ Y; an intermediate sensor interface device SID_i being configured for sampling P_i sensing sources (103... 104) to obtain sensor values related to the P_i sensing sources, P_i being an integer greater than 0; the intermediate sensor interface device SID_i further being configured for receiving at an input first data groups comprising data values related to Q_i sensing sources using the asynchronous unidirectional protocol, Q_i being an integer greater than 0; the intermediate sensor interface device SID_i further being configured for transmitting via an output second data groups comprising sensor values related to the P_i sensing sources and data values related to the Q_i sensing sources using the asynchronous unidirectional protocol; the input of intermediate sensor interface device SID_2 being coupled to the output of sensor interface device SID_1 and for i>2, the input of intermediate sensor interface device SID_i being coupled to the output of sensor interface device SID_i-1; the output of intermediate sensor interface device SID_Y being configured for transmitting third data groups, a third data group comprising sensor values related to the P_Y sensing sources of sensor interface device SID_Y and data values related to Q_Y sensing sources to an input of the control unit using the asynchronous unidirectional protocol, wherein P_Y+Q_Y=N, and wherein the data rate of first data groups comprising data values related to Q_i sensing sources at the input of the intermediate sensor interface device SID_i is higher than the data rate of second data groups at the output of the intermediate sensor interface device SID_i.