Patent ID: 8984163
Filing Date: 2015-03-17
Classification: H04L

Abstract:
1. A method for creating a communication network from devices of an automation system, comprising: developing the automation system based on logical addresses of the devices; and assigning to the devices physical addresses by which the devices are accessed over the communication network for exchange of data during operation of the automation system; constructing an overlay network comprising a decentralized network between the devices, each of the devices in the decentralized network representing a network node responsible for a plurality of keys, and resources in the decentralized network are specified by a respective key assigned to a resource and a resource content, wherein subscriptions to the resources, which are specified by the respective keys assigned to the resource and a subscribing device, are published; wherein at the one of the network nodes responsible for the respective key of the resource, the resource or a subscription to the resource is published, and for a subscription to the resource a subscribing device of the devices is informed, on publication of the resource, with the key of the subscription about the resource content; wherein each of the devices is accepted into the decentralized network as a network node during an initialization and functions as at least one of a first and a second device; wherein, during operation of the automation system, data at each first device is sendable to one of the second devices by the communication network or data at the one of the second devices is retrievable for each first device; wherein, during initialization of each first device, a subscription to a resource with a logical address as key and each first device as subscribing device is published; and wherein, during initialization of the one of the second devices, a resource with a same logical address in accordance with a subscription to the resource during the initialization of each first device and with a physical address of the one of the second devices as resource content is published.