Method for Setting Up an Uninterrupted Communication Connection and Communication Device

摘要

A method in which a monitoring unit allocated to a communication device checks, based on a name resolution protocol, whether a second communication network address allocated to the first communication device becomes valid in order to set up an uninterrupted communication connection to the communication device that is allocated to an industrial automation system, where in cases of an allocation of a new valid communication network address and an existing communication connection, the monitoring unit initiates a set-up of an additional communication connection using the new communication network address.

主权项

1. A method for setting up an uninterrupted communication connection with a communication device allocated to an industrial automation system, comprising:
setting up a first communication connection between a first communication device and a second communication device in accordance with a transmission control protocol using a first communication network address allocated to the first communication device; checking, by a monitoring unit allocated to the first communication device, based on a name resolution protocol, whether a second communication network address allocated to the first communication device becomes valid; initiating, by the monitoring unit a set-up of an additional second communication connection between a transport and switching function unit allocated to the first communication device and the second communication device in cases of an allocation of a second valid communication network address and an existing first communication connection; setting up, by the transport and switching function unit allocated to the first communication device, the second communication connection using the communication network address allocated to the first communication device; and clearing the first communication connection if the second communication connection is successfully set-up.