RECEIVER NETWORK COMPONENT FOR OPERATION IN A COMMUNICATION NETWORK, COMMUNICATION NETWORK AND METHOD FOR OPERATING A COMMUNICATION NETWORK

摘要

A receiver network component operates in a communication network of an automation system. The component receives data messages sent redundantly by transmitter network components of the communication network and rejects duplicates of an already received data message. Interoperability of network components from different manufacturers is ensured even for device-redundant transmitter network components and redundant transmission of data messages is achieve with comparatively low complexity. The receiver network component is prompted by reception of a current data message from one of the transmitter network devices to check whether a data message with identical useful data has already been received from another transmitter network component. The data message is processed if it is received for the first time and it is rejected as a duplicate if it is a data message with such useful data that have already been received in an earlier data message from another transmitter network component.

主权项

1. A receiver network component for operation in a communication network of an automation system, the receiver network component comprising:
a device for receiving data messages sent redundantly from transmitter network components of the communication network and configured to reject duplicates of a data message already received by the receiver network component; the receiver network component being configured to be prompted by a reception of a current data message from one of the transmitter network devices to check the data message as to whether a data message with identical useful data has already been received from another transmitter network component; and the receiver network component being configured to process a data message with a useful data content received for the first time further, and to reject as a duplicate a data message with such useful data as have already been received in an earlier data message from the other transmitter network component.