Communication system for controlling and monitoring at least one peripheral (140 1, 140 N) in an aircraft, the system including a master communication module connected to at least one distinct slave communication module (120 1, 120 N), which is or is not remote from the master communication module, the or each slave communication module being positioned close to a controlled peripheral (140 1, 140 N) and being connected to a port of the master communication module by a bidirectional link, characterized in that the system comprises: - a counter included in the master communication module, - a table, included in the master communication module, the table comprising time period indices, each time period index being or not being associated with an identifier of a slave communication module, - transmission means, included in the master communication module, for transmitting data frames to the or to each slave communication module in a plurality of time periods, each data frame comprising the value of the counter, - reception means, included in the or each slave communication module (120 1, 120 N), for receiving the data frames, - reading means included in the or each slave communication module (120 1, 120 N), for reading the value of the counter included in the received data frame and for updating a counter included in the or each slave communication module with the read value of the counter included in the received data frame, - checking means, included in the or each slave communication module (120 1, 120 N), for checking whether the updated value of the counter corresponds to a time period index associated with the slave communication module, - transfer means, included in the or each slave communication module (120 1, 120 N), for transferring a data frame to the master communication module if the read and stored value of the counter corresponds to a time period index associated with the slave communication module, - selection means, included in the master communication module, for selecting the port connecting the master communication module to the slave communication module the identifier of which is associated with the time period index which corresponds to the value of the counter, - reception means, included in the master communication module, for receiving the data frame transmitted by the slave communication module. - a counter included in the master communication module, - a table, included in the master communication module, the table comprising time period indices, each time period index being or not being associated with an identifier of a slave communication module, - transmission means, included in the master communication module, for transmitting data frames to the or to each slave communication module in a plurality of time periods, each data frame comprising the value of the counter, - reception means, included in the or each slave communication module (120 1, 120 N), for receiving the data frames, - reading means included in the or each slave communication module (120 1, 120 N), for reading the value of the counter included in the received data frame and for updating a counter included in the or each slave communication module with the read value of the counter included in the received data frame, - checking means, included in the or each slave communication module (120 1, 120 N), for checking whether the updated value of the counter corresponds to a time period index associated with the slave communication module, - transfer means, included in the or each slave communication module (120 1, 120 N), for transferring a data frame to the master communication module if the read and stored value of the counter corresponds to a time period index associated with the slave communication module, - selection means, included in the master communication module, for selecting the port connecting the master communication module to the slave communication module the identifier of which is associated with the time period index which corresponds to the value of the counter, - reception means, included in the master communication module, for receiving the data frame transmitted by the slave communication module.