Synchronous, clocked communication system with local input/output components and method for integrating local input/output components into such a system

The invention relates to a synchronous, clocked communication system, for example a distributed automation system, the subscriber may be any automation components and via a data network (1) are coupled together. By means of the disclosed method for the integration of decentralized input / output modules (2, 3), these decentralized input / output modules (2, 3) are so integrated into the synchronous, clocked communication system that they can use its properties fully. Thus, the detection of input signals and the output of output signals in a deterministic and synchronous manner in the decentralized input / output modules (2, 3) is especially possible. It also allows the disclosed method to detect input signals with an accuracy less than the length of a communication cycle of the communication system and to support the switching of output signals in smaller Zeitgranularitäten than the length of a communication cycle, which finds particular application, for. Example for switch. In addition, it is possible by the invention, a synchronization for actual-value and setpoint outputs from diverse automation components such. As decentralized input / output modules (2, 3) and digital drives (4, 5, 6). As data network (1) of the communication system are all possible bus systems, such. As Fieldbus, Profibus, Ethernet, Industrial ...