摘要:
A method and an apparatus are disclosed for the coupling of a safety-critical process from a safe environment to an environment that is not safe or to an environment that is safe but has fewer processing channels. To this end, provision is made of a method which processes a data record that is relevant to the safety-critical process to form a respective safe protocol using at least two redundant processing channels in accordance with identical laws, and forms a common safe protocol taking into account at least two redundant safe coupling protocols. When writing at least elements of the common safety-based protocol using a processing channel with write authorization, another processing channel is used to check whether these elements are identical to one another. Access to a common buffer register for the purpose of storing these elements is enabled only when they are identical to one another.
摘要:
The invention relates to a method and to an apparatus, which has been adapted to carry out the method, for the coupling of a safety-critical process from a safe environment, which has at least two redundant processing channels, to an environment which is not safe or to an environment which is safe but has fewer processing channels. To this end, provision is made of a method which processes a data record which is relevant to the safety-critical process, in particular on a protocol-specific basis, to form a respective safe protocol (14, 24) using at least two redundant processing channels (1, 2) in accordance with identical laws, and forms a common safe protocol taking into account at least two redundant safe coupling protocols (14, 24), to be precise by accessing a common (buffer) register (30) using each of the processing channels (1, 2), in which case a write authorization is allocated only once for each register location, and, when writing at least elements (14′) of the common safety-based protocol using a processing channel (1) with write authorization, at least one further processing channel (2) is first of all used to check (25) whether these elements (14′) are identical to one another, and access to the common buffer register for the purpose of storing these elements is enabled only when they are identical to one another.
摘要:
The invention relates to a method and to a system for transmitting data of a data type to be transmitted cyclically and of a data type which can be transmitted acyclically via a common transmission channel from a first participant unit connected to the transmission channel to at least one further participant unit connected to the transmission channel. The invention proposes to develop a method based on a protocol-specific cyclic transmission sequence of transmission messages for transmitting data of a data type to be transmitted cyclically via a transmission channel. When a particular type of impending transmission message is detected for which redundant data of the data type to be transmitted cyclically are provided without new information content, instead of these data, data of a data type which can be transmitted acyclically are inserted into the data area provided for data of this data type to be transmitted cyclically.
摘要:
A method and also a control and data-transmission system is presented, with which the installation location of at least one safety bus component connected to the control and data-transmission system (10) can be checked.For this purpose, in two separate communications cycles, a respective position identifier, which had been allocated to the safety bus components (60) in a prior configuration process, is transmitted to each safety bus component via a non-safety communications control device (30). The safety bus components compare the position identifiers received in the two communications cycles to the contents of a memory, in which a reference position identifier has already been stored or which is still empty. Based on a comparison of the transmitted position identifier to the reference position identifier and the configuration dataset stored in a safety control device (50), it can be tested whether each safety bus component is connected to the predetermined installation location within the control and data-transmission system (10).
摘要:
The invention relates to a method and to a system for transmitting data of a data type to be transmitted cyclically and of a data type which can be transmitted acyclically via a common transmission channel from a first participant unit connected to the transmission channel to at least one further participant unit connected to the transmission channel. The invention proposes to develop a method based on a protocol-specific cyclic transmission sequence of transmission messages for transmitting data of a data type to be transmitted cyclically via a transmission channel. At least one particular position within the protocol-specific cyclic transmission sequence, the data of the data type to be transmitted cyclically, transmitted with the transmission message transmitted immediately before are checked for redundancy and currency with respect to the data of the data type to be transmitted cyclically which are provided for the immediately impending transmission message and when such an impending transmission message is detected for which redundant data of the data type to be transmitted cyclically are provided without new information content, instead of these data, data of a data type which can be transmitted acyclically are inserted into the data area provided for data of this data type to be transmitted cyclically.
摘要:
Data transmission and processing system with at least one input user (1), with a control unit (4) for the reception and the processing of data of the input user (1) and a transmission device (3) of data between the input user (1) and the control unit (4). The input user (1) cyclically makes available the input data values (Z0, Z1 . . . ZX) for retrieval, and the transmission device (3) cyclically calls up the input data values (Z0, Z1 . . . ZX) and transfers them to the control unit (4), to be sent after processing to at least one output user (2). A parameterization device (5) with a monitoring switch (12, 15) is provided at the input user (1) to mark the input data values that characterize critical states as critical data values (FZ1). In the case of the presence of such critical states, only the associated critical data values (FZ1) are made available henceforth for transfer and are transmitted until it has been determined with certainty that the control unit (4) has received the critical data values (FZ1).
摘要:
Data transmission and processing system with at least one input user (1), with a control unit (4) for the reception and the processing of data of the input user (1) and a transmission device (3) of data between the input user (1) and the control unit (4). The input user (1) cyclically makes available the input data values (Z0, Z1 . . . ZX) for retrieval, and the transmission device (3) cyclically calls up the input data values (Z0, Z1 . . . ZX) and transfers them to the control unit (4), to be sent after processing to at least one output user (2). A parameterization device (5) with a monitoring switch (12, 15) is provided at the input user (1) to mark the input data values that characterize critical states as critical data values (FZ1). In the case of the presence of such critical states, only the associated critical data values (FZ1) are made available henceforth for transfer and are transmitted until it has been determined with certainty that the control unit (4) has received the critical data values (FZ1).
摘要:
A method and also a control and data-transmission system is presented, with which the installation location of at least one safety bus component connected to the control and data-transmission system (10) can be checked.For this purpose, in two separate communications cycles, a respective position identifier, which had been allocated to the safety bus components (60) in a prior configuration process, is transmitted to each safety bus component via a non-safety communications control device (30). The safety bus components compare the position identifiers received in the two communications cycles to the contents of a memory, in which a reference position identifier has already been stored or which is still empty. Based on a comparison of the transmitted position identifier to the reference position identifier and the configuration dataset stored in a safety control device (50), it can be tested whether each safety bus component is connected to the predetermined installation location within the control and data-transmission system (10).
摘要:
The invention relates to a device (10) for blow molding a container from a parison, comprising a blowing cylinder (11) and a blowing nozzle (12) mounted thereon, in which the parison (R) can be fixed and with a stretching rod (13), enclose by the cylinder (11) and which may be passed through the nozzle (12), wherein the nozzle (12) can be supplied with compressed air via openings (14) in the cylinder (11). The station (10) is characterized in that the stretching rod (13) is driven by a single tubular electric linear motor (15) the stator (15-1) of which is mounted on the cylinder (11) and the armature (15-2) of which is connected to the stretching rod (13).
摘要:
A test stand assembly includes an electric machine (4) for driving and/or loading a test object (1), which is connected by a connecting shaft (2) having an adapter flange (3) to the electric machine (4). The assembly has a constant, predetermined moment of inertia, and the mass and the moment of inertia of the adapter flange (3) are selected in such a manner that the resonant frequency of the system formed of test object (1), adapter flange (3), connecting flange (2), and electric machine (4) for driving and/or loading the test object (1) lies between the idle frequency and the partial load frequency of the test object (1).