Abstract: An automation device having a plurality of modules, where at least one first module is configured to supply the other modules electrical power and a second module is configured to determine the total power requirement of the automation device, wherein the second module determines the total power requirement from the information relating to the power requirement of the respective module, which information is stored in the other modules, and compares the total power requirement with a threshold value and initiates measures for reducing the power requirement of at least one of the other modules based on the comparison result to prevent an overload due to improper or inappropriate installation of the automation device in a switchgear cabinet and resultant reduced air convection.

Abstract: An assembly for a modular automation device includes a sensor, which is arranged in a housing capsule of the assembly, for detecting the temperature (Tdet) of the feed air in the housing capsule, where feed air flows through air-inlet openings in the housing capsule, across components, and finally through air-outlet openings in the housing capsule, and includes a monitoring unit for evaluating the temperature (Tdet) that is detected by the sensor such that the feed-air temperature can be determined more accurately by using suitable measures.

Abstract: An automation device having a plurality of modules, where at least one first module is configured to supply the other modules electrical power and a second module is configured to determine the total power requirement of the automation device, wherein the second module determines the total power requirement from the information relating to the power requirement of the respective module, which information is stored in the other modules, and compares the total power requirement with a threshold value and initiates measures for reducing the power requirement of at least one of the other modules based on the comparison result to prevent an overload due to improper or inappropriate installation of the automation device in a switchgear cabinet and resultant reduced air convection.

Abstract: A modular electrical system including a first current-emitting source module and a first current-consuming sink module which is connected to the first current-emitting source module is provided. The first sink module has a first sink identification means to identify maximum power requirement of the first sink module. The object of providing power balancing between a first source module and a first sink module is achieved in that the first source module has a first source identification means for identifying the power capacity of the first source module, wherein in order to calculate a power ratio of the system the first sink identification means and the first source identification means are connected to a two-wire line for the purpose of generating a differential voltage.

Abstract: A module for an automation device with a plurality of adjacent modules is provided. The module includes a housing capsule that has at least one rear wall and two side walls and which is provided for housing electric components. Further, an automation device including the module is provided. One of the side walls of the modules is embodied as being thermally conductive and that the other side wall is embodied as being thermally insulated.

Abstract: A modular electrical system including a first current-emitting source module and a first current-consuming sink module which is connected to the first current-emitting source module is provided. The first sink module has a first sink identification means to identify maximum power requirement of the first sink module. The object of providing power balancing between a first source module and a first sink module is achieved in that the first source module has a first source identification means for identifying the power capacity of the first source module, wherein in order to calculate a power ratio of the system the first sink identification means and the first source identification means are connected to a two-wire line for the purpose of generating a differential voltage.

Abstract: A module for an automation device with a plurality of adjacent modules is provided. The module includes a housing capsule that has at least one rear wall and two side walls and which is provided for housing electric components. Further, an automation device including the module is provided. One of the side walls of the modules is embodied as being thermally conductive and that the other side wall is embodied as being thermally insulated.

Abstract: A method for transmitting data (D) on one and the same data transmission unit (4) in a particularly simple, secure and rapid manner in accordance with various requirements. For transmitting the data (D) between data processing units (2) of a data processing system (1) via the data transmission unit (4), the data (D) is transmitted in a parallel manner in at least two protocols. The first protocol enables transmission of the data (D) in a first frequency range with a first signal sequence and a first signal level. The second protocol enables further data (D) to be transmitted in a second frequency range with a second signal sequence and a second signal level.

Abstract: There is described a module for an automation device with a plurality of adjacent modules, having a housing capsule that has at least one rear wall and two side walls and which is provided for housing electric components. There is also described an automation device having modules of said type. It is proposed that one of the side walls of the modules be embodied as being thermally conductive and that the other side wall be embodied as being thermally insulated. That will on the one hand result in improved heat dissipation for the modules and, on the other, will prevent the thermal coupling of adjacent modules of the automation device.

Abstract: A method for transmitting data (D) on one and the same data transmission unit (4) in a particularly simple, secure and rapid manner in accordance with various requirements. For transmitting the data (D) between data processing units (2) of a data processing system (1) via the data transmission unit (4), the data (D) is transmitted in a parallel manner in at least two protocols. The first protocol enables transmission of the data (D) in a first frequency range with a first signal sequence and a first signal level. The second protocol enables further data (D) to be transmitted in a second frequency range with a second signal sequence and a second signal level.

Abstract: A device for the coding of plug receptacles in a support unit for electronic modules is described. Coding slides having a pin are provided on the support unit for each plug receptacle so that only those modules having a recess for the pin corresponding to a particular position of the coding slide can be inserted into the particular plug receptacle. This prevents, for example, modules with 24 V direct current supply from being inserted into plug receptacles wired for 230 V alternating current and vice versa.

Abstract: An arrangement in which at least one master unit is linked via a bus to a multiple of slave units, each slave unit having a memory in which the master unit carries out read and/or write accesses. The master unit can initiate a data access uniformly on each of the slave units according to a predetermined communication protocol. Moreover, a slave unit is proposed which is suitable for a communication with a master unit according to this protocol. The arrangement can be used in programmable controllers.

Abstract: A system having several active (master) and passive (slave) bus users (processors), each of which is allocated a memory with its own memory area. Each bus user has read access to its own memory area and each active (master) bus user has write access to every memory area. A control line is provided for sending a control signal which indicates to the active (master) bus users accessing the memory areas whether data have already been written into the memory areas. The control signal has dominant and recessive states. Outside of the access cycles, all bus users generate a dominant state. During a cycle of access to memory areas, only the bus users in whose memory areas the data have not yet been written, generate such a signal. The system may be used in automation systems.

Abstract: The invention relates to an arrangement for running a system bus in a device such as a programmable controller. The arrangement includes a number of card slots interconnected via a system bus with data and control lines, and via address lines. A number of functional units may be plugged into the card slots. One or more of the functional units may be adapted for read and/or write access (e.g., a CPU component), and each functional unit so-configured includes an arbiter capable of managing the system bus. At system startup, one of the arbiters is activated to manage the system bus while the other arbiters remain passive. The functional units may advantageously be plugged into any of the card slots; that is, there is no need to have a particular card slot dedicated to running the system bus.

Abstract: A configuration for data transfer with a parallel bus system including an address bus, a data bus and a control bus and with several units interfacing with them. A first control line is used to send an acknowledge signal with which one or more units addressed by a first unit acknowledge accesses in access cycles. A second control line is used to detect addressing errors and accesses to non-existing units and to carry a signal ready control signal to the first unit from the others indicating whether one of the interfaced units was addressed. To do so, the signal ready control signal has dominant and recessive states. During an access cycle, only addressed units generate a dominant state. The control signal is also used for synchronous multipoint access. The invention can be used in bus systems.

Abstract: An arrangement for transmitting data over a bus (2, 6, 7) has a central unit (1, 4, 5) which initiates data transmission and one or several peripheral units (3, 8, 9) linked to each other by the bus. In at least one of the components, besides first control lines and data lines for transmitting a data word having a first data width, further control lines and further data lines for transmitting a data word having a second data width are also provided. These are designed in such a way that components with different data bus widths can communicate with each other by transmission of data words having the smallest existent data width. In automation equipment, the invention allows any combination of components of different classes of capacity.

Abstract: An arrangement with a plurality of plug points which are interconnected via a system bus having data and control lines, address lines taken to connections of the plug points, one of which is connected to a selector terminal, and plug-in functional units, at least one of which has contacts for connecting the address lines to this unit and each of the remaining functional units has contacts for connecting the unit to the selector terminal of the plug point. Units performing read and write functions can be fitted at any plug point in such an arrangement. The invention is applicable in store-programmable controls.

Abstract: The maintenance condition of lead storage batteries is determined by measuring the no-load voltage, the voltage under a heavy current load and, subsequently thereto, measuring the recovery voltage at two instants spaced one second apart and by performing a qualitative comparison of the measurement results with predetermined reference voltages and making a logical evaluation of the comparison results.