Method for operating an isochronous cyclic communication system

The invention relates to a method for moving isochronal method for periodically communication system, the communication cycle (300,306) and is divided in the first part (302) for real-time communication and second part (304) is non-real-time communication, wherein the communication system (220) is a user equipment (200); each user equipment with a memory (202) is a layout data, wherein the method comprises the following steps: The communication system using a first layout data (A) movement of the real-time communication; Transmitting the real-time communication the one or more communication cycle's second part and layout data (B); Memory and layout data to the user equipment memory; theA converting time (216) to transmit the user equipment, the switching time charges transformer of the first layout data to the data layout time.