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Patent
Beckhoff Automation GmbH | Date: 2016-07-15

A linear transport system comprises at least one carriage which has at least one permanent magnet and at least one roller, an energizable stator device which has multiple coils, and a guide rail which is arranged on the stator device and which serves for guiding the carriage. The guide rail comprises a running surface for the rolling of the roller of the carriage, such that the roller can roll on the running surface during a displacement, guided by way of the guide rail, of the carriage, wherein at least one electrical contacting device is provided which is formed separately from the roller and which is designed to form an electrical connection between the carriage and the guide rail during the displacement, guided by way of the guide rail, of the carriage.


Patent
Beckhoff Automation GmbH | Date: 2016-02-15

A network includes a first network participant connected via a first connection to a further network participant. The first network participant receives a data message containing information that a parameter must be set to a first value, via the first connection. The first network participant checks whether it is connected via a second connection to a still further network, and whether the parameter is not set to the first value in the second connection. In this case, the first network participant forwards the data message via the second connection, clearing down the second connection, and re-establishes the second connection, where the parameter for the second connection is set to the first value.


A method and corresponding system are described for monitoring a first node in a communications network by a second node, where the first node has a single-channel design and is designed to execute a safety-oriented application. The second node has a dual-channel design, and a safety protocol is used for a data transfer between the first and second node. The second node determines at each of two consecutive time points a time value based on an internal timer, and sends each determined time value to the first node. The first node in response to each receipt of the time values determines a further time value based on a further internal timer. The first node compares a difference between the two time values from the second node with a difference between the two further time values from the first node, and goes into an error state depending on the comparison.


Patent
Beckhoff Automation GmbH | Date: 2015-07-28

The invention relates to a conveying device comprising at least one movable carriage on which at least one first group and at least one second group of track rollers are disposed, and a track rail disposed so as to be locationally fixed for guiding the carriage. The track rail has at least one track face, at least one straight portion and at least one curved portion. The track rollers are configured in such a manner that during movement of the carriage along the straight portion, exclusively the track rollers of the first group roll on the track face assigned to the straight portion, and during movement of the carriage along the curved portion, exclusively the track rollers of the second group roll on the track face assigned to the curved portion. The invention furthermore relates to a further conveying device and corresponding carriages, as described herein.


Patent
Beckhoff Automation GmbH | Date: 2016-02-15

A control system for an electric motor comprising a stator having a plurality of stator coils and a rotor movable along the stator comprises a position detection device and a coil monitoring device. In this case, the position detection device is designed to generate position data representing a position of the rotor along the stator, and the coil monitoring device is designed to generate coil data representing a status of one or a plurality of the stator coils. The control system furthermore comprises a safety device designed to carry out a coordination between the coil data and the position data. Moreover, the safety device is designed to cause the electric motor to be transferred to a safe state if an error has been discovered during the coordination.


A method for operating a node in a communications network comprises the following steps: The node receives a reference time via the communications network. A transmit clock of the node, which was determined for an earlier clock cycle on the basis of a local clock of the node, is compared with the reference time. The local clock of the node is corrected on the basis of the comparison result. On the basis of the corrected local clock a transmit clock is determined to be used by the node for the current clock cycle.


Patent
Beckhoff Automation GmbH | Date: 2016-01-15

A network subscriber comprises a plurality of individual functional units, each individual functional unit comprising an application interface. The network subscriber further comprises a network subscriber comprises at least a shared functional unit, a first interface for establishing a physical connection and a second interface for establishing a further physical connection.


Patent
Beckhoff Automation GmbH | Date: 2015-08-03

A coupling unit for an industrial control system has two module connections for making electrical contact with control modules, a field connection for making electrical contact with an industrial field device, a data transmission medium for the transmission of communication data, and a signal transmission medium for the transmission of field signals. Each of the two module connections comprise electrical contact elements which form a communication signal region and a field signal region. Contact elements of the communication signal regions of each of the two module connections are connected in an electrically conductive manner to the data transmission medium, and contact elements of the field signal regions of each of the two module connections are connected to the field connection via the signal transmission medium.


Patent
Beckhoff Automation GmbH | Date: 2015-11-23

A position-detection system for a drive having a rotor, which can move along a path, comprises an encoder unit, a signal-detection unit and a signal-processing device. The encoder unit or the signal-detection unit is arranged on the rotor, and the respective other unit is arranged along the path. Furthermore, the signal-processing device is designed to generate a first position signal and a second position signal on the basis of a relative position of the encoder unit and signal-detection unit. The signal-processing device is designed to determine a longitudinal position of the rotor along the path on the basis of phase values of the first and second position signals. Furthermore, the signal-processing device is designed to determine a distance, directed transversely with respect to the path, between the encoder unit and the signal-detection unit, on the basis of amplitude values of the first and second position signals, and to detect an operating state of the drive on the basis of the distance.


Patent
Beckhoff Automation GmbH | Date: 2015-04-10

A method for operating a communication network comprising a master and a number of subscribers. A message comprising a data field is transmitted by the master, wherein at least one of the subscribers, on receiving the message, reads data out of the data field of the message, and forwards the message to at least one other one of the subscribers after the readout, and wherein the at least one other one of the subscribers, on receiving the message, writes data into the data field.

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