Abstract: A method for initializing a bus system for a process plant includes: installing an administrative bus participant and a second bus participant at respective installation sites in the process plant; storing a list of at least two installation sites of bus participants in the administrative bus participant; connecting the administrative bus participant and the second bus participant to each other across a data bus; prompting an identification sensor of the second bus participant with an identification prompt; after detection of the identification prompt by the identification sensor, sending an identification signal identifying the second bus participant to the administrative bus participant; and after receiving the identification signal identifying the second bus participant, matching up the second bus participant with an installation site of the at least two installation sites contained in the stored list.

Abstract: A method for secure communication with a field measuring device of process measuring technology is described and shown. Upon contact by an external communication means with a web server via a communication interface, a first authenticity check of an external communication means is carried out by the field measuring device and a second authenticity check of the external communication means is carried out. After successful completion of the first authenticity check and the second authenticity check, further communication of the external communication means with the web server is authorized by the field measuring device.

Abstract: A method for initializing a bus system for a process plant includes: installing an administrative bus participant and a second bus participant at respective installation sites in the process plant; storing a list of at least two installation sites of bus participants in the administrative bus participant; connecting the administrative bus participant and the second bus participant to each other across a data bus; prompting an identification sensor of the second bus participant with an identification prompt; after detection of the identification prompt by the identification sensor, sending an identification signal identifying the second bus participant to the administrative bus participant; and after receiving the identification signal identifying the second bus participant, matching up the second bus participant with an installation site of the at least two installation sites contained in the stored list.

Abstract: A domestic refrigeration appliance has a heat-insulated housing with a coolable inner container delimiting a coolable interior for storing foods. The interior is cooled with a coolant circuit that includes a compressor with a three-phase motor operated by an actuator via electrically powered motor windings. The actuator is actuated at least indirectly to operate the compressor in a switched-on state with a rotational speed of the three-phase motor at least approximately equal to a predetermined rotational speed. The actuator is caused to switch off the compressor such that the rotational speed of the three-phase motor decreases to a predetermined minimum rotational speed, and thereafter to switch off the three-phase motor for at least a predetermined period of time by de-energizing the motor windings. The period of time is selected long enough to reduce the speed of the motor, beginning from the minimum rotational speed, to reach standstill.

Abstract: A domestic refrigeration appliance includes an insulated body with a coolable container delimiting a coolable space for food, a refrigerant circuit having a coolant and a compressor for cooling the space, and an electronic control apparatus and an electric drive with a three-phase AC synchronous motor and a control element or inverter for activating the motor. The compressor includes a chamber with an inlet and with an outlet, a piston mounted displaceably within the chamber, a crankshaft and the motor. The motor has a number of pole pairs greater than 1, a stator and a rotor mounted rotatably relative to the stator and coupled to the piston by the crankshaft. During compressor operation, the motor causes the piston to reduce the size of a volume enclosed by the compressor chamber and the piston to compress the coolant. A method for operating a domestic refrigeration appliance is also provided.

Abstract: A method for providing safe access of a mobile control unit (1) to a field device (2), wherein, in particular, the field device is protected against unauthorized access via a mobile control unit is achieved in that a connection for transmitting data is established between the mobile control unit (1) and the field device (2), that access data for access is exchanged, that a comparison is made between the access data and stored comparison data and a comparison result is generated, and that access of the mobile control unit (1) to the field device (1) is permitted based on the comparison result.

Abstract: A domestic refrigeration appliance has a heat-insulated housing with a coolable inner container delimiting a coolable interior for storing foods. The interior is cooled with a coolant circuit that includes a compressor with a three-phase motor operated by an actuator via electrically powered motor windings. The actuator is actuated at least indirectly to operate the compressor in a switched-on state with a rotational speed of the three-phase motor at least approximately equal to a predetermined rotational speed. The actuator is caused to switch off the compressor such that the rotational speed of the three-phase motor decreases to a predetermined minimum rotational speed, and thereafter to switch off the three-phase motor for at least a predetermined period of time by de-energizing the motor windings. The period of time is selected long enough to reduce the speed of the motor, beginning from the minimum rotational speed, to reach standstill.

Abstract: A method for secure communication with a field measuring device of process measuring technology is described and shown. Upon contact by an external communication means with a web server via a communication interface, a first authenticity check of an external communication means is carried out by the field measuring device and a second authenticity check of the external communication means is carried out. After successful completion of the first authenticity check and the second authenticity check, further communication of the external communication means with the web server is authorized by the field measuring device.

Abstract: A domestic refrigeration appliance includes an insulated body with a coolable container delimiting a coolable space for food, a refrigerant circuit having a coolant and a compressor for cooling the space, and an electronic control apparatus and an electric drive with a three-phase AC synchronous motor and a control element or inverter for activating the motor. The compressor includes a chamber with an inlet and with an outlet, a piston mounted displaceably within the chamber, a crankshaft and the motor. The motor has a number of pole pairs greater than 1, a stator and a rotor mounted rotatably relative to the stator and coupled to the piston by the crankshaft. During compressor operation, the motor causes the piston to reduce the size of a volume enclosed by the compressor chamber and the piston to compress the coolant. A method for operating a domestic refrigeration appliance is also provided.

Abstract: A method for flow measurement using a magnetic-inductive flowmeter with a measuring tube and magnetic field generator that allows for detection of a zero flow error is achieved in that the measuring tube is filled with a first medium, the strength of the magnetic field is measured over a first measuring interval and a derivative with respect to time of the measured strength of the magnetic field is determined for the first measuring interval, that a second medium is made to flow through the measuring tube, the strength of the magnetic field is measured over a second measuring interval and a derivative with respect to time of the measured strength of the magnetic field is determined for the second measuring interval, that a deviation of the derivative for the second measuring interval from the derivative for the first measuring interval is determined, and assigned to a zero flow error.

Abstract: A communication arrangement, a gate device and method for data communication between a mobile operating unit and a field device provides a certain ease in handling. The method involves a user program being loaded onto or activated on the mobile operating unit. Furthermore, data from the mobile operating unit is transmitted to a data communication device and from the data communication device to a gate device and from the gate device to a transmitting device of the field device and/or is transmitted in the opposite direction.

Abstract: A method for flow measurement using a magnetic-inductive flowmeter with a measuring tube and magnetic field generator that allows for detection of a zero flow error is achieved in that the measuring tube is filled with a first medium, the strength of the magnetic field is measured over a first measuring interval and a derivative with respect to time of the measured strength of the magnetic field is determined for the first measuring interval, that a second medium is made to flow through the measuring tube, the strength of the magnetic field is measured over a second measuring interval and a derivative with respect to time of the measured strength of the magnetic field is determined for the second measuring interval, that a deviation of the derivative for the second measuring interval from the derivative for the first measuring interval is determined, and assigned to a zero flow error.

Abstract: A method for transmitting and receiving broadcast signals in a radio broadcasting communication system is provided together with an associated apparatus. The transmitting method includes creating a frame having a preamble slot, a data slot and a control slot, and sending the created frame. The control slot has information for assigning the data slot to one of an uplink and a downlink. The receiving method includes receiving such a frame wherein the control slot has scheduling information for each user, and extracting the data slot from the received frame by using the scheduling information in the control slot. These methods may realize an interactive broadcasting by separately employing broadcast signals for the uplink and downlink.

Abstract: Method for operating for measuring the flow velocity of a flowing medium using a measuring device in which a magnetic field is induced in the flowing medium and on which a interference voltage is superimposed. During compensation measuring, a first magnetic flux density is generated in the medium and a first measuring voltage determined, a second magnetic flux density is generated in the medium and a second measured voltage determined, and a third magnetic flux density is generated in the medium and a third measured voltage determined. The flow velocity is determined from the first and second magnetic flux densities and measured voltages, and the interference voltage is determined form the third magnetic flux density and measured voltage and the determined flow velocity. Then, a fourth measured voltage is determined, and the flow velocity re-determined from the third magnetic flux density, the fourth measured voltage and the determined interference voltage.

Abstract: A field device (1) and interface (2), a method for operating a field device (1) as well as a cloud service that achieve simplified data communication is obtained in that the interface is a cloud interface (2) via which data communication takes place between the field device (1) and a cloud (3).

Abstract: A method for providing safe access of a mobile control unit (1) to a field device (2), wherein, in particular, the field device is protected against unauthorized access via a mobile control unit is achieved in that a connection for transmitting data is established between the mobile control unit (1) and the field device (2), that access data for access is exchanged, that a comparison is made between the access data and stored comparison data and a comparison result is generated, and that access of the mobile control unit (1) to the field device (1) is permitted based on the comparison result.

Abstract: Method for operating for measuring the flow velocity of a flowing medium using a measuring device in which a magnetic field is induced in the flowing medium and on which a interference voltage is superimposed. During compensation measuring, a first magnetic flux density is generated in the medium and a first measuring voltage determined, a second magnetic flux density is generated in the medium and a second measured voltage determined, and a third magnetic flux density is generated in the medium and a third measured voltage determined. The flow velocity is determined from the first and second magnetic flux densities and measured voltages, and the interference voltage is determined form the third magnetic flux density and measured voltage and the determined flow velocity. Then, a fourth measured voltage is determined, and the flow velocity re-determined from the third magnetic flux density, the fourth measured voltage and the determined interference voltage.

Abstract: A communication arrangement (12), a gate device (5) and method for data communication between a mobile operating unit (1) and a field device (2) provides a certain ease in handling. The method involves a user program (3) being loaded onto or activated on the mobile operating unit (1). Furthermore, data from the mobile operating unit (1) is transmitted to a data communication device (4) and from the data communication device (4) to a gate device (5) and from the gate device (5) to a transmitting device (9) of the field device (2) and/or is transmitted in the opposite direction.

Abstract: In a method for sending communication signals, space-time block coding is performed by dividing a data stream of complex-value data symbols into a number KT>2 of partial data streams of respectively n>2 data symbols. The data symbols in the partial data streams are used to form n×KT matrix CKT. Transmitter-end predistortion is performed by using the matrix CKT to form a matrix D, and the data symbols are sent by KT transmission antennas according to their arrangement in the matrix D.

Abstract: A method for transmitting and receiving broadcast signals in a radio broadcasting communication system is provided together with an associated apparatus. The transmitting method includes creating a frame having a preamble slot, a data slot and a control slot, and sending the created frame. The control slot has information for assigning the data slot to one of an uplink and a downlink. The receiving method includes receiving such a frame wherein the control slot has scheduling information for each user, and extracting the data slot from the received frame by using the scheduling information in the control slot. These methods may realize an interactive broadcasting by separately employing broadcast signals for the uplink and downlink.