Patent ID: 6842808

Claim:
A method for an exchange of data in messages between at least two users connected by a bus system and having separate time bases but operating a same bus speed, comprising: causing the at least two users to transmit data via the bus system in the messages, the at least two users operating at the same bus speed; causing a first one of the at least two users, in a function as timer, to control the messages as a function of time such that the first one of the at least two users repeatedly transmits a reference message including a first time information regarding a time base of the first one of the at least two users, via the bus system at a specifiable time interval; causing at least a second one of the at least two users to form a second time information in accordance with a time base of the at least second one of the at least two users, as a function of the first time information; ascertaining a correction value from the first time information and the second time information; and causing the at least second one of the at least two users to adapt as a function of the correction value at least one of the second time information and the time base of the at least second one of the at least two users, whereby the at least two users continue to operate at the same bus speed.