Abstract: In accordance to one aspect, a method for optimizing the effective data transmission rate in a bus system, in particular in automation technology is provided. A data telegram used in higher-order data networks based on the Internet protocol, with at least one data telegram, at least one data segment and/or at least one data section being generated and/or modified and/or deleted by at least one slave. The topology of the bus system can hereby be selected according to the application and is taken into account in the configuration of the data contained in the data telegrams, without infringing the protocol characteristics of the higher-order data network. The number of data telegrams required is hereby significantly reduced, in particular on communication links with maximum loading.

Abstract: A passenger transportation system, such as an escalator or moving walk, contains a circulating band, a driving station, and a reversing station. The driving station is arranged in the area of a first end of the passenger transportation system and has a slave control unit. The reversing station in the area of a second end of the passenger transportation system has a master control unit. For the purpose of exchanging data, the master control unit and the slave control unit are connected together by a data bus. The slave control unit has a first printed circuit board on which is mounted a first set of electronic components and which serves to transmit to the master control unit data concerning the functioning of the passenger transportation system. The master control unit has a second printed circuit board on which is mounted a second set of electronic components and which serves to analyze the data and control of the passenger transportation system.

Abstract: There is described a method for transmitting synchronization messages in a communication network, the communication network comprising a plurality of network nodes communicating with one another, each containing an internal clock, which is timed with a node clock frequency assigned to the respective network node. The synchronization messages transmitted in the communication network serve to synchronize the times of the internal clocks of the network nodes and contain the pulse counter status of a synchronization clock operating at a predefined synchronization clock frequency. The pulse counter status is estimated by each network node and updated in the synchronization message. Changes in the synchronization clock frequency are taken into account when estimating the pulse counter status.

Abstract: There is described a communication system for reliable communication between communication stations, wherein there is at least one communication connection between the communication stations, wherein the communication connection features at least two channels for transmitting payload data telegrams, wherein only one channel acts as primary channel for the communication at any time, and wherein the other channels are provided as backup channels. A status indicator in the payload data telegram is provided for the indication of information concerning which channel is primary channel or backup channel at a given time point, wherein the communication stations adopt as primary channel that channel for which, during receipt of the payload data telegrams, the most recent status change from backup channel to primary channel was detected by the communication stations.

Abstract: The invention relates to a method for assigning an IP address to a device (116), comprising the following steps: connecting the device (116) to a port (110) of a switch (104), transmitting an identification code (124) of the port (110) from the switch (104) to the device (116), transmitting the identification code (124) of the port (110) from the device (116) to an address server (122), assigning the IP address to the device (116) on the basis of the identification code (124) of the port (110).

Abstract: The invention relates to a method and a system for communication in a data network (101), in particular switched Ethernet, and a user (102) in such a data network (101). To reduce the communication resources required for the transmission of telegrams (119-135) in the data network (101), it is proposed that time segments are defined, which are repeated cyclically at a basic clock rate, that telegrams (119-135) are each assigned a first identifier U, which allocates to the respective telegram (119-135) a group of n successive time segments for transmission of the respective telegram (119-135), whereby the group is repeated cyclically, that the telegrams (119-135) are each assigned a second identifier Z, which allocates to the respective telegram (119-135) an mth time segment in the sequence of n time segments of a group for transmission of the respective telegram (119-135), whereby 1?m?n and that the telegrams (119-135) are transmitted in the respectively assigned time segment.

Abstract: There is provided a method and apparatus for stamping any Ethernet frames. Any Ethernet frame is provided with a time stamp, it being possible to use standard Ethernet controllers defined according to IEEE 802.X. This is achieved by the method in such a way that the stamp is applied between an Ethernet controller operated in RAW mode and a “Physical Layer” to an area of the Media Access Control (MAC) destination address, while the original MAC destination address is advantageously encoded in the remaining area.

Abstract: A method for cyclical communication between communications stations controls or surveys a technical process, through a bus. Communications relations, which are provided for the communication stations are executed during each bus cycle of predetermined duration and if a communications relation is disturbed, its repetition is scheduled for a succeeding bus cycle and the disturbed communications relation is acknowledged with a special acknowledgement code.

Abstract: A passenger transportation system, such as an escalator or moving walk, contains a circulating band, a driving station, and a reversing station. The driving station is arranged in the area of a first end of the passenger transportation system and has a slave control unit. The reversing station in the area of a second end of the passenger transportation system has a master control unit. For the purpose of exchanging data, the master control unit and the slave control unit are connected together by a data bus. The slave control unit has a first printed circuit board on which is mounted a first set of electronic components and which serves to transmit to the master control unit data concerning the functioning of the passenger transportation system. The master control unit has a second printed circuit board on which is mounted a second set of electronic components and which serves to analyze the data and control of the passenger transportation system.

Abstract: In accordance to one aspect, a method for optimizing the effective data transmission rate in a bus system, in particular in automation technology is provided. A data telegram used in higher-order data networks based on the Internet protocol, with at least one data telegram, at least one data segment and/or at least one data section being generated and/or modified and/or deleted by at least one slave. The topology of the bus system can hereby be selected according to the application and is taken into account in the configuration of the data contained in the data telegrams, without infringing the protocol characteristics of the higher-order data network. The number of data telegrams required is hereby significantly reduced, in particular on communication links with maximum loading.

Abstract: Abstract Addressing of redundant subscribers in a communication network The invention relates to a system and a method for addressing at least two subscribers (3, 4) that are redundant in respect of each other in a communication network (5), whereby the subscribers (3, 4) are each permanently assigned a first physical address (1, 9) that is unique in the communication network (5).

Abstract: The invention relates to a method for assigning an IP address to a device (116), comprising the following steps: connecting the device (116) to a port (110) of a switch (104), transmitting an identification code (124) of the port (110) from the switch (104) to the device (116), transmitting the identification code (124) of the port (110) from the device (116) to an address server (122), assigning the IP address to the device (116) on the basis of the identification code (124) of the port (110).

Abstract: The invention relates to a method and a system for communication in a data network (101), in particular switched Ethernet, and a user (102) in such a data network (101). To reduce the communication resources required for the transmission of telegrams (119-135) in the data network (101), it is proposed that time segments are defined, which are repeated cyclically at a basic clock rate, that telegrams (119-135) are each assigned a first identifier U, which allocates to the respective telegram (119-135) a group of n successive time segments for transmission of the respective telegram (119-135), whereby the group is repeated cyclically, that the telegrams (119-135) are each assigned a second identifier Z, which allocates to the respective telegram (119-135) an mth time segment in the sequence of n time segments of a group for transmission of the respective telegram (119-135), whereby 1?m?n and that the telegrams (119-135) are transmitted in the respectively assigned time segment.

Abstract: The invention relates to a method for accessing data of an automation apparatus and an automation apparatus suitable for the embodiment thereof, wherein access to data on a remote terminal is carried out by means of a remote terminal in accordance with a standard protocol, wherein the automaton apparatus has a client and/or server for handling communication tasks in accordance with the standard protocol and a converter for converting a communication task into a format that can be processed by a functional interface into an internal functionality of the automation apparatus for direct access to the data thereof.

Abstract: The invention relates to a method and a system for transmitting data in a switchable data network and to a user (1-4) in a switchable data network. To improve the transmission of data having different priority in the switchable data network, it is proposed assigning data telegrams (70-77) priorities, with said telegrams (70-77) in each case having a beginning and an end, with data telegrams (75-77) that were assigned a first priority being sent during a first phase from first users (1-3) to second users (2-4), with the first phase being characterized by means of a defined receive time of the end of the respective data telegram (75-77) at the second user (2-4).

Abstract: The invention relates to a method for cyclical communication between communications stations (1, 2, 3) which are provided for controlling or surveying a technical process (50), through a bus (4). According to the invention, communications relations (12, 13, 21, 31) which are provided for the communication stations (1, 2, 3) are executed during each bus cycle of predetermined duration (&Dgr;t) and if a communications relation is disturbed, its repetition (21W) is scheduled for a succeeding bus cycle and the disturbed communications relation is acknowledged with a special acknowledgement code.

Abstract: A communication subscriber which, as a passive subscriber of a communication system, does not have its own transmission authorization but listens to all the communication processes and can receive only those data items which are also intended for it, which can be identified without doubt from destination identifier allocated to the data items, is given the capability, according to the invention, also to receive in addition those data items whose destination identifier and source identifier match an entry in a filter table provided in the communication subscriber which has been given the capability according to the invention.

Abstract: The invention relates to a communication station (S32-S34), which as a passive station in a communication system which is not authorized to transmit but listens in on all communication processes and can receive only data (D) actually intended for it, which fact can be conclusively verified by means of a destination point code (T) assigned to the data (D). According to the invention, said communication station is additionally upgraded to receive data (D), the destination (T) and originating point code (S) of which matches an entry (FT, FS) in a filter table (F) provided for in a communication station (S32-S34) which has been upgraded in accordance with the invention.