Process and device for validating/invalidating a message sent over an information transmission network by means of a response in a communication frame

摘要

This process for validating/invalidating a message (4) sent over a information transmission network between at least two stations connected to said network by means of a response in a communication frame, the message including at least one header field (5) sent by a first station and one data field (6) sent by a second station, is characterized in that the data field (6) includes an end of field marker (7) and a beginning of field marker (8), modified in a manner that respectively corresponds to the beginning and to the end of an operation to update the remainder of the data field (6) carried out by the station concerned, to enable the message (4) to be validated if the two markers correspond and to be invalidated if they do not agree.