| 摘要 |
A control system has a plurality of spatially distributed stations. At least some of the stations have input connectors for connecting sensors or output connectors for connecting actuators. The stations are connected from station to station to form a series of stations. The series has a first station, at least one second station and a last station. The first station and every second station have a successor in the series. Every second station and the last station have a predecessor in the series. In order to transmit data in this control system, the first station generates a number of separate data telegrams which is equal to the number of second stations plus the last station. Each data telegram is addressed to precisely one of the stations. The first station sends the data telegrams on by one at defined time intervals to its successor, wherein the data telegrams are addressed in reverse order of the stations. Every second station receives a data telegram from its respective predecessor and sends the received data telegram to its respective successor in the manner of a bucket brigade until it receives a data telegram which is addressed itself. The second stations and the last station each generate an individual reply telegram which is directed to the first station, and send the individual reply telegrams to their respective predecessors in the manner of a bucket brigade. |
