A method, comprising: coupling a first device and a set of second devices (20 1,..., 20 n) to a CAN communication bus via respective CAN transceiver circuits to exchange messages over the CAN communication bus, configuring the first device as a communication master device to transmit via the CAN communication bus: a) first messages carrying a set of operation data message portions indicative of operations for implementation by second devices in the set of second devices (20 1,..., 20 n), and b) second messages addressed to second devices in the set of second devices (20 1,..., 20 n), the second messages conveying identifiers identifying respective ones of the second devices (20 1,..., 20 n) to which the second messages are addressed requesting respective reactions towards the first device within respective expected reaction intervals, and configuring the second devices in the set of second devices (20 1,..., 20 n) as communication slave devices: c) to receive via the CAN communication bus the first messages transmitted from the first device configured as communication master device, read respective operation data message portions in said set of operation data message portions and implement respective operations as a function of the respective operation data message portions read, d) to receive via the CAN communication bus the second messages transmitted from the first device configured as communication master device and react thereon within said respective expected reaction intervals by transmitting via the CAN communication bus reaction messages towards the first device configured as communication master device, the method being characterized in that it comprises configuring said respective CAN transceiver circuits to actively set the CAN communication bus to a recessive level during transmission of said messages via the CAN communication bus by the respective first device or second device (20 1,..., 20 n). coupling a first device and a set of second devices (20 1,..., 20 n) to a CAN communication bus via respective CAN transceiver circuits to exchange messages over the CAN communication bus, configuring the first device as a communication master device to transmit via the CAN communication bus: a) first messages carrying a set of operation data message portions indicative of operations for implementation by second devices in the set of second devices (20 1,..., 20 n), and b) second messages addressed to second devices in the set of second devices (20 1,..., 20 n), the second messages conveying identifiers identifying respective ones of the second devices (20 1,..., 20 n) to which the second messages are addressed requesting respective reactions towards the first device within respective expected reaction intervals, and a) first messages carrying a set of operation data message portions indicative of operations for implementation by second devices in the set of second devices (20 1,..., 20 n), and b) second messages addressed to second devices in the set of second devices (20 1,..., 20 n), the second messages conveying identifiers identifying respective ones of the second devices (20 1,..., 20 n) to which the second messages are addressed requesting respective reactions towards the first device within respective expected reaction intervals, and configuring the second devices in the set of second devices (20 1,..., 20 n) as communication slave devices: c) to receive via the CAN communication bus the first messages transmitted from the first device configured as communication master device, read respective operation data message portions in said set of operation data message portions and implement respective operations as a function of the respective operation data message portions read, d) to receive via the CAN communication bus the second messages transmitted from the first device configured as communication master device and react thereon within said respective expected reaction intervals by transmitting via the CAN communication bus reaction messages towards the first device configured as communication master device, c) to receive via the CAN communication bus the first messages transmitted from the first device configured as communication master device, read respective operation data message portions in said set of operation data message portions and implement respective operations as a function of the respective operation data message portions read, d) to receive via the CAN communication bus the second messages transmitted from the first device configured as communication master device and react thereon within said respective expected reaction intervals by transmitting via the CAN communication bus reaction messages towards the first device configured as communication master device, the method being characterized in that it comprises configuring said respective CAN transceiver circuits to actively set the CAN communication bus to a recessive level during transmission of said messages via the CAN communication bus by the respective first device or second device (20 1,..., 20 n).