Patent ID: 7760753
Filing Date: 2010-07-20
Classification: H04L

Abstract:
1. A method for data transmission between participants in industrial automation, selected from the group consisting of digital drives, controllers, intelligent measurement pickups, industrial PCs, said participants communicating by means of a data bus, comprising the following steps: using at least one first and at least one second time slot ( forwarding process data comprising at least one of set-point values and actual values for location and/or speed and/or acceleration by the at least one first time slot ( forwarding additional data by the at least one second time slot ( predetermining a length of the data telegrams representing the additional data within a length of the corresponding time slot ( varying the beginning of transmission ( employing random access within said at least one second time slot; transmitting useful data by each participant as needed without a transmission authorization; transmitting said data telegrams cyclically in one of said first and second time slots and transmitting said data telegrams acyclically in the other of said first and second time slots; and shortening the data telegram for additional data by a transmitting participant by distributing said data telegram over a plurality of cycles when the data telegram for additional data requires a longer period of time for transmission than is possible within the corresponding time slot.