摘要:
With a method for synchronization in a redundant communication system that includes a central participant and at least one further participant, at least one of the further participants being synchronized with the central participant, and, to this end, at least two telegrams containing synchronization information being transmitted by the central participant to the at least one further participant, if there is a transmission error involving a telegram containing synchronization information, it is still possible to carry out synchronization due to the fact that, based on the synchronization information contained in the at least two telegrams, resultant synchronization information is obtained and is used to synchronize the further participants with the central participant.
摘要:
A network station for a data network for receiving external data and for transmitting device-internally prepared data has a repeater for transmitting an external data packet received at a data input to a data output, a first data preparation unit for transmitting an internal data packet generated from the prepared data via the data output, having a switching device for interrupting the data path between the data input and the data output, a control unit that is connected to the switching device in order, in a first operating mode, to block the transmission of the received external data packet via the data output if the internal data packet is currently being transmitted via the data output by the data preparation unit, and to permit the transmission of the received data packet by the repeater via the data output if no internal data packet is currently being transmitted via the first data preparation unit.
摘要:
A communication structure has a communication controller which has a synchronization unit and a first interface and a second interface, I/O connection means including a first I/O connection which for data exchange connects the first interface to a communication system having at least one further user, and a second I/O connection which connects the second interface to the communication system which has at least one further user, wherein the first interface and the second interface of the communication controller have a variable functionality.
摘要:
A method for regulating a web tension of a continuous materials which is moving using a transport device with a web-tension controller, includes determining controller characteristic parameters, and using for the determining of controller characteristic parameters a characteristic which is specifiable as a function and/or at several support points.
摘要:
A method for printing corrections with a register control unit for a multicolor printing press equipped with individual printing stations includes placing printed marks on a printed material, which are detected by sensors, or, in conjunction with an image evaluation occurring in an at least partial print image detection and executing an evaluation in the register control unit in order to control a movement of the printing material or a correction of an element selected from the group consisting of individual printing stations, a web transport, and both in order to compensate for different print lengths among the individual printing stations, printing at least one first printing mark and one second printing mark per product and per printing procedure, and, for register control purposes, comparing the at least one first and second printing marks to reference points or reference regions and/or executing a register control based on a comparison between data which are obtained from a print image detection, and comparison image data.
摘要:
In a method for registration correction for a multicolor rotary printing press in an acceleration phase, having at least one registration correction device with correction parameters for operation of constant speed, and having a motion controller for controlling the print roller speed, if the registration correction device is acted upon in the acceleration phase by at least one fixed set of the correction parameters, which differs from the correction parameters at constant speed, and/or in the acceleration phase, a correction profile that is modified compared to constant speed is used, and/or information about the presence of the acceleration phase is supplied by the motion controller to the registration correction device, then it can be attained that in both methods, during the acceleration phase, the corrector continues to remain active, and even in this phase, it compensates for registration deviations. By the set of correction parameters that is modified compared to constant speed, or correction values, the registration corrector can be optimally adapted to requirements during the acceleration phase, and thus minimal registration offset can be attained. After the acceleration phase, the correction parameters or correction values are reset to the values before the acceleration phase for constant speed.
摘要:
A method for carrying out a printing correction and a device for this. A method for carrying out a printing correction is provided, a product being printed on during a processing procedure by a plurality of processing devices, positions of two printing marks A,B,C,D being recorded. The positions of the printing marks A,B,C,D are evaluated and an automated correction of the print is carried out in the light of the positions of the printing marks A,B,C,D, the correcting including a correcting of a printing length. Furthermore, an apparatus is provided for carrying out the method.
摘要:
The invention relates to a method for error response when an error occurs in response to a motion, particularly of a drive mechanism in a machine, the motion taking place while using at least one master axis and at least one cam disk having at least one input and one output and being controlled by the master axis, in which, in response to the occurrence of the error at the least one input of the at least one cam disk, current process variables that are present are used for the initiation and the execution of the error response. The invention also relates to a corresponding computer system.
摘要:
A method for regulating a transmission of a quantity of user data between a plurality of users of a communication system via a field-bus system is provided, in which method the individual users communicate by way of data telegrams, each data telegram containing at least one destination address, one source address and a quantity of user data not exceeding a predefined, maximum quantity. In the event the maximum quantity of user data predefined for one data telegram is less than the quantity of user data to be transmitted, the quantity of user data to be transmitted is fragmented into a plurality of partial telegrams, and the respective partial telegrams are transmitted one after another in a defined sequence of partial telegrams.
摘要:
Transmission of data in a communication system including a central participant and at least one further participant includes transmitting the data via telegrams from the at least one further participant to the center participant, transmitting the telegrams by the central participant to the at least one further participant before being sent out by the at least one further participant, adding by the central participant a predetermined entry in the telegram in at least one location assigned to the at least one further participant, and adding by the at least one further participant to the telegram the data to be transmitted to the central participant such that the entry added by the central participant is at least partially overwritten.