Siemens Aktiengesellschaft

Thomas Zebisch

Thomas Talanis

Karl-Heinz Krause

Hubert Gehring

Horst Koerzdoerfer

Time messages are transmitted from a central timebase to a local timebase. The transmission time of a time message is detected and is entered as a data value in a subsequent time message. The reception time of a time message is detected, and the transmission time contained in it is reproduced, by the local timebase. Finally, the difference between associated transmission and reception times of time messages is used to determine the time discrepancies occurring in the process, and these are evaluated for synchronization of the local timebase.

Method for synchronizing a local time base on a central time base and device for implementing said method with preferred applications

An automation system and a method for accessing the functionality of hardware components H . . . Hn of the automation system. Hardware components are connected by at least one bus system B . . . B and at least one hardware component contains a system connection unit The system connection unit eliminates the need for special transmission objects, which until now were required between an administrative system and the hardware components of an automation system. The system connection unit contains function objects D . . . DB as images of the real functionality of the hardware components, whereby the function objects are provided for accessing the functionality of the hardware components via the bus system. The function objects are designed, for example, as DCOM objects.

Automation system to access functionality of hardware components with each hardware component having system connection unit with function objects representing real functionality of components

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Erlangen, Germany

Thomas Zebisch