Patent application number | Description | Published |
20100057959 | Method as well as system for the transmission of cyclic and acyclic data - One purpose of the invention is to identify a way of transmitting data by means of a transmission channel which effectively counteracts disadvantages previously resulting from a ring structure and a linear structure, and combines advantages of the one topology group with advantages of the other topology group. For this purpose the invention proposes a method for the transmission of cyclic and acyclic data by means of a transmission channel between at least two user devices connected to the transmission channel, with a protocol-specific cyclic data transmission being carried out at least between one user device functioning as a master and at least one user device functioning as a slave, and which is characterized in that, during an impending transmission cycle, data to be transmitted is checked against corresponding data of a preceding cycle with regard to redundancy and currency and in that upon detection of an impending transmission cycle for which redundant data without new information content is provided, acyclic data is inserted in lieu of said data in the data field provided for said data. | 03-04-2010 |
20100131686 | Method and System for Secure Transmission of Process Data to be Transmitted Cyclically - The invention relates to a method and system for secure transmission of process data to be transmitted cyclically in a cyclical data transmission to be performed protocol-specifically via a transmission channel between a user functioning as a master and at least one user functioning as a slave that are connected to the transmission channel. Within a transmission protocol frame, a time slot that can always accommodate the same number of bits independently of the data to be transmitted is assigned to each slave during a data transmission cycle. For safety-relevant process data that is to be transmitted during a data transmission cycle from a slave to at least one additional user, or that is to be transmitted during a data transmission cycle from a user to at least one slave, additional first protection data for recognizing error-free transmission of this safety-relevant process data is generated and transmitted in each case. | 05-27-2010 |
20110255248 | ELECTRICAL FIELD DEVICE AND EXPANSION MODULE FOR INSERTION INTO AN ELECTRICAL FIELD DEVICE - An electronic expansion module which has at least one circuit board, that has a contact region with contacts for mechanical and electrical contact-making with mating contacts connected to the circuit board of the expansion module and a circuit board recess formed such that, with the expansion module inserted into an opening formed on a side of the housing of an electrical field device for use in industrial control, the circuit board of the expansion module does not have any conductive connection to the electrical field device except in the contact region so that reliable electrical isolation between the interior of the device and the user is ensured. | 10-20-2011 |
20120056613 | METHOD AND DEVICE FOR THE DETECTION OF CURRENT ASYMMETRIES IN THREE-PHASE CIRCUITS | 03-08-2012 |
20120286862 | Safety switching device for setting a safety-related device to a safe state - A safety switching device, with which a safety-related device, can be set into a safe state. The safety switching device has a microprocessor or microcontroller, which can set an electric drive to be protected into a safe state both if an emergency circuit breaker, protective door switch, and/or two-hand switch is activated and also if there is faulty operation of the safety-related device or electric drive. For this purpose, the microprocessor is implemented such that it can determine from at least one analog signal to be measured whether a predetermined parameter lies outside a predetermined operating range. In addition, the microprocessor can be a component of a safety device which is constructed for multiple-channel control of a safety-related electric drive. In this way, the safety switching device can respond to several safety functions independent of each other in order to set an electric drive into a safe state. | 11-15-2012 |
20120299578 | Safety switching device for setting a safety-related device to a safe state - A safety switching device, with which a safety-related device, can be set into a safe state. The safety switching device has a microprocessor or microcontroller, which can set an electric drive to be protected into a safe state both if an emergency circuit breaker, protective door switch, and/or two-hand switch is activated and also if there is faulty operation of the safety-related device or electric drive. For this purpose, the microprocessor is implemented such that it can determine from at least one analog signal to be measured whether a predetermined parameter lies outside a predetermined operating range. In addition, the microprocessor can be a component of a safety device which is constructed for multiple-channel control of a safety-related electric drive. In this way, the safety switching device can respond to several safety functions independent of each other in order to set an electric drive into a safe state. | 11-29-2012 |