Siemens Aktiengesellschaft

Siemens Enterprise Communications Gmbh & Co. Kg

Franz-Josef Goetz

Dieter Klotz

Dieter Brueckner

Juergen Schimmer

Johann Arnold

Martin Kiesel

Jürgen Schimmer

Dieter Brückner

Michael Franke

Herbert Bernecker

Rolf Knoerzer

Matthias Schweikart

Stephan Schueler

A method for transmitting real time data packets in a cyclic communication system, each transmission cycle having a first partial cycle (IRT-Z) for a real time communication portion and a second partial cycle (NRT-Z) for a non-real-time communication portion. The method includes determination () of a cycle number and processing of a transmission sequence of real time data packets in the first partial cycle. The transmission sequence is composed of one or more partial sequences (1, 2, 3, 4, 5), and the composition depends on the cycle number.

Method for transmitting real-time data messages in a cyclic communications system

A method for receiving data messages in communications systems having redundant network paths. Received data of a peripheral representation or image is routed to a node along at least two different network paths. This makes it possible to store a consistent peripheral representation or image in a memory () of a node, if there is a disturbance in the data transmission along one network path.

System and associated method for receiving data telegrams in communication systems having redundant network paths

A method and a system for transmitting data by means of a first data network () have first means for transmitting data in at least one first transmission cycle, the first transmission cycle being subdivided into a first area () for transmitting real-time-critical data and a second area () for transmitting non-real-time-critical data, and by means of a second data network () having second means for transmitting data in at least one second transmission cycle, the second transmission cycle being subdivided into a third area () for transmitting real-time-critical data and into a fourth area () for transmitting non-real-time-critical data, and with a switching unit () for transmitting real-time-critical data of the first area into the third area.

Method and system for coupling data networks

A method for arbitrating access to a data bus among subscribers or bus devices (Tn,Tn, . . . ), wherein the bus devices are coupled by at least one arbitration ring (). The method comprises the following steps: a) requesting access by a first bus device; b) checking whether a first signal, which indicates that the arbitration ring is enabled, is present at an input () of the first bus device; c) if the first signal is present, outputting () a second signal by the first bus device; d) checking whether, at the end of a predetermined time period, the first signal is still present at the input () of the first bus device; and e) if the first signal is still present at the end of the predetermined time period, accessing the data bus by the first bus device.

Method of arbitrating access to a data bus

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Heideck, Germany

Franz-Josef Goetz