Siemens Aktiengesellschaft

Juergen Laforsch

Thomas Grosch

Albert Renschler

Wilhelm Bollhoefer

Michael Dreher

Georg Kleifges

A method for operating a redundant automation system having a plurality of subsystems, wherein one subsystem of the plurality of subsystems operates as a master and assumes process control and the other subsystem operates as a reserve during redundant operation, where measures are provided by which the availability of the redundant automation system is increased, and where regardless of whether transient errors occur on the subsystem of the plurality of subsystems operating as the master or on the subsystem operating as the reserve, a total failure of the automation system is largely avoided.

Method for operating a redundant automation system to increase availability of the automation system

A method with which one subsystem of a redundant automation system that is provided with a first subsystem and a second subsystem is operated as a master and another subsystem is operated as a slave, where the subsystems are provided with transmission and reception tasks to transmit and receive messages, and where messages are also interchanged with program path synchronization during a temporally asynchronous run through a program path in the master and the slave.

Method for operating a redundant automation system

A method for processing data in a data processing system () which includes a number of data processing units (), and operator and observation units (), which are interconnected by way of a data transmission unit (), whereby a respective data processing program () with corresponding function modules (FBto FBn) and data modules (DBto DBn) is implemented in the data processing units (). At least one identifier (K, KE, KI) for the function modules and data modules is stored in a respective conversion table () belonging to each data processing unit (). When an external data processing unit () accesses a data module (DBto DBn) and/or a function module (FBto FBn) of another data processing unit (), a conversion table () mediates by using an external identifier (KE) that characterizes the access and verifies whether a matching internal identifier (KI) is stored for the particular external identifier (KE).

Method for processing data using external and internal identifiers to provide reliable access to the data even when reconfigurations of the data occur, and associated system

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Buehl, Germany

Juergen Laforsch