Abstract: A terminating unit comprising a first terminating device for a first data line, a second terminating device for a second data line, a third terminating device, and a connecting device which is arranged for electrically connecting the first and the second terminating device to the third terminating device A switch-over unit interacts with the connecting device such that in cases where the third terminating device is connected to a counterpiece, the first terminating device and the second terminating device are connected to the third terminating device and in cases where no counterpiece is terminated at the third terminating device, the first terminating device is connected to the second terminating device for connecting through the data lines.

Abstract: A system and a method for the use of services within at least one communication network with internet mechanisms and at least one automation system, as well as a service access unit to connect an automation system to a communication network. A system is proposed for the improved use of services within at least one communication network with internet mechanisms and at least one automation system, with components of the automation system being coupled together by a conventional field bus, with a service access unit being provided to connect the conventional field bus to the communication network, with the service access unit being provided as client for the services provided in the communication network and with the service access unit having a transformation unit, provided to adapt a first communication protocol of the services to a second communication protocol of the field bus.

Abstract: A field bus coupler, a system with a field bus coupler, a transmission method for acyclic data via a field bus coupler and a computer program product are provided. The field bus coupler is configured to transmit acyclic data. The field bus coupler possesses a first and a second network side, each network side possessing an interface for connecting a field bus. On the first network side an output module is provided for receiving an output data record of a first field bus. The data record is mirrored from the first to the second network side and buffered in a memory. The mirrored data record is thus provided via an input module on the second network side to a second field bus as an input data record.