A communication system for exchanging data between an actuator system and an external device , e.g., an operation where the communication system under the form of a gateway and a transcoder interprets the information in a bidirectional stream of data and distributes the information to both ends. The communication system is furthermore provided with a logger function , where the signals that are sent out to both sides of the gateway , are stored in a memory , so that the actions and signals that lead to an alteration on the actuator can later be reconstructed.