Patent ID: 7463643

Claim:
A method for control of a first station in a switched data network by a second station in the switched data network, wherein communication between the stations takes place via at least one point-to-point connection in transmission cycles which are synchronous with one another, said transmission cycles being divided into a first part for the transmission of real-time-critical data and a second part for the transmission of non real-time-critical data, the method comprising: specifying for the transmission of real-time critical data within each station a transmission list and a reception list for a deterministic communication; determining by the first station of an actual value generated within the first station; transmitting a first data telegram with the actual value from the first station to the second station via the switched data network in the first part of a transmission cycle; determining a control error from the actual value and a set point value of the second station within the second station, and determining a manipulated variable from the control error by the second station; and transmitting a second data telegram from the second station to the first station in the first part of a subsequent transmission cycle with the manipulated variable, wherein for said first and second data telegram it is specified in one of said transmission lists in which transmission cycle the data telegram is to be transmitted.