Abstract: The controller executes a control calculation based on proportional and integration calculation parameters which are preset, and outputs a control output to a process, and comprises a display device for displaying panels having characters and figures thereon; a panel expanding key for instructing the display device to expand, or change, the panel to be displayed; a plurality of keys for setting control operations and various parameters; an operating panel generating unit for displaying as a bar graph; a process value and a control output value on an operating panel to be displayed on the display device; a trend graph panel generating unit for displaying the transition of the process value on a trend graph panel to be displayed on the display device; a tuning panel generating unit for displaying information to control the control parameter used in the control calculation on a tuning panel to be displayed on the display device; a display controlling unit for controlling the displays of the panels; and an operat

Abstract: A circuit disables an on-board voltage regulator when an upgrade voltage regulator is installed. The system including the voltage regulator disable circuit of the preferred embodiment comprises an on-board voltage regulator circuit, a receptacle, coupled to the on-board voltage regulator circuit, for receiving an upgrade voltage regulator module, and a disable circuit coupled to the on-board voltage regulator circuit and the receptacle, the disable circuit being activated upon insertion of the upgrade voltage regulator module to disable an output of the on-board voltage regulator circuit.

Abstract: An electrical system for transferring data concurrently between pen based computers and a host computer includes a multiple computer receptacle device for receiving a plurality of pen based computers. The multiple computer receptacle device includes a housing, and a support frame mounted in the housing for supporting the plurality of pen based computers. The support frame includes a plurality of spaced apart parallel divider panels, where adjacent divider panels define between them a slot for receiving a respective pen based computer. The support frame includes a back panel mounted on the divider panels, a plurality of data input/output connectors mounted on the back panel, and a plurality of power connectors also mounted on the back panel. The data input/output connectors and the power connectors are positioned between adjacent divider panels and are adapted to mate with corresponding data and power connectors mounted on the pen based computers.

Abstract: A hard disk assembly including a disk drive assembly, and a carrier board is disclosed. The disk drive assembly includes a connector having a form factor corresponding to a particular interface specification, drive control electronics, and a disk drive unit. Additionally, the hard disk assembly may include an adapter to provide a mechanical and electrical interface between the connector associated with the disk drive assembly and a corresponding connector on a midplane of a disk storage subsystem. The disk drive assembly may be disposed in one of at least first and second predetermined locations on the carrier board. The adapter is employed to provide the appropriate mechanical and electrical interface between the connector of the disk drive assembly and the midplane connector of the disk storage subsystem.

Abstract: A expansion board including a main board, a common board and a system connector. The main board including a cutout and a board connector for receiving the common board. The common board having a data connector at one end and a board connector at the other end. The board connector being mounted perpendicular to the system connector to connectably mate to the common board whether components are mounted on either side of the main board. The main board includes circuitry for one of several expansion buses, the common board contains circuitry independent to any specific expansion bus.

Abstract: An expandable automation system includes both a programmable controller that is capable of stand-alone operation, and a modular programmable controller. The programmable controller that is capable of standalone operation has an interface, such as a multipole plug connector, for connecting expansion units. The modular programmable controller consists of a central processing unit and expansion modules. The expansion modules of the modular programmable controller can be used as expansion units for the programmable controller that is capable of standalone operation.

Abstract: A portable platform system for connecting an external module having a module connector to a portable electronic platform having a flat panel display, a central processing unit and a system bus includes at least two docking bays disposed on a rear side of the flat panel display including at least first, second, and third rails and an electrical connector. An external module of a first width is slid in between the first and second adjacent rails to be secured to the rear side of the fiat panel display, and the module connector is connected to the electrical connector of the docking bay to electrically connect the module to the central processing unit via the system bus.

Abstract: Disclosed is a method of connecting the terminals of at least one heat-sinked, plastic-encapsulated power transistor to circuits of a printed-circuit board. In the method, a main flat surface of the plastic-encapsulated power transistor is adhered to a first side of a heat sink. The transistor has a plurality of terminals projecting from one end of a transistor body in an orientation generally parallel to the main flat surface of the transistor. On a printed-circuit board, a mechanical coupling device is mounted that has respective conductors with respective, terminal-receiving apertures, for receiving the terminals of the transistor. The conductors are connected to respective circuits of the printed-circuit board. The printed-circuit board is adapted to be located on the mentioned one side of the heat sink in an assembled position. The heat sink, with the transistor mounted thereon, is positioned such that the terminals are respectively inserted into respective apertures in the mechanical coupling device.

Abstract: An electrical system for transferring data concurrently between pen based computers and a host computer includes a multiple computer receptacle device for receiving a plurality of pen based computers. The multiple computer receptacle device includes a housing, and a support frame mounted in the housing for supporting the plurality of pen based computers. The support frame includes a plurality of spaced apart parallel divider panels, where adjacent divider panels define between them a slot for receiving a respective pen based computer. The support frame includes a back panel mounted on the divider panels, a plurality of data input/output connectors mounted on the back panel, and a plurality of power connectors also mounted on the back panel. The data input/output connectors and the power connectors are positioned between adjacent divider panels and are adapted to mate with corresponding data and power connectors mounted on the pen based computers.

Abstract: The disclosure relates to battery powered hand-held data entry terminals wherein a peripheral module may contain an automatically operating full image reader and a wireless communication unit. The reader reads at least one full line of indicia and may comprise a laser bar code scanner or a flash type image reader. Preferably the reader has uniform resolution in orthogonal directions in the field of view so that an area image can be read at any arbitrary angular orientation and re-oriented as a stored digital image to a normalized orientation before decoding. The user interface may lie in a first longitudinally extended layer and the peripheral module may lie in a second longitudinally extended adjoining layer. In normal reading disposition of the automatic reader, the user interface may be close to its normal orientation for user interaction therewith to provide for smooth transitions between reading and user interaction operations.

Abstract: To improve the serviceability, manufacturability and uptime for a computer file server a specially designed planar/riser card assembly is mounted on the computer chassis and includes a card cage structure in which a riser card is secured. Carried on the riser card are I/O card edge connector sockets into which all of the system I/O cards may be plugged. The riser card is hard connected into the system and itself has an edge connector portion. The system planar board is carried on a mounting plate which is screwed to an outer side of the cage structure. A socket connector carried on the planar board receives the edge connector portion of the riser card, thereby electrically coupling the planar board to the riser card. The riser serves as a wiring plane containing only the signals which the planar board would normally provide to the I/O cards through "on planar" connectors.

Abstract: A rack comprises a plurality of lower guide rails arranged side by side to form the bottom thereof, and a plurality of upper guide rails arranged side by side to form the top thereo, for accommodating a plurality of electronic modules such as modems. Each of the modules includes a rectangular casing, lower and upper side edges of which are rounded or chamfered. The lower and upper guide rails are in vertical register with each other, respectively, and are vertically spaced from each other by a distance corresponding to a vertical height of the case. Each of the lower and upper guide rails has a pair of ridges coextended in parallel with each other and defining therebetween a guide path for complementarily and slidably receiving the corresponding side of the casing, whereby an outer width of the guide rails can be generally equal to a thickness of the casing due to the rounded or chamfered sides thereof.

Abstract: The input and/or output device for process data has a mounting rack (1), as well as a plurality of modules (2) fastened on the mounting rack (1). A process connector (4) can be inserted into each of the modules (2) on the front side in each case. Each module (2) has a circuit board (17) which is arranged in a housing (8), as well as a terminal strip (18) which is connected non-positively to the process connector (4). The terminal strip (18) serves to receive contact pins (26) which interact with contacts of the process connector (4). The input and/or output device is intended to demonstrate a high degree of operational reliability even in the case of a high level of mechanical and electromagnetic stresses.

Abstract: There is provided an enclosure that encapsulates a current transformer by utilizing a snap together design while allowing for electrical coupling between the transformer and external wiring. Two housing members will snap together while capturing the transformer in a rigid fashion to avoid excess vibration or friction, which could fatigue the transformer's wiring.

Abstract: An adapter for supporting e number of printed wiring cards onto an electronic equipment rack equipped with means of support for cards of a larger size. The adapter includes end plates mentioned to fit into the mounting hardware of an existing rack normally providing space for larger cards. The end plates and sides being virtually identical to the older type and size of printed wiring card.

Abstract: A terminal for receiving and storing information and a reader for reading information and communicating the information to the terminal. A housing is provided which has the terminal and reader integrated therein and also a battery for providing necessary power thereto. A detachable handle can be attached to the housing and includes sides which extend around the sides of the housing as well as partially extending over the top of the housing. An improved mechanism is shown for selectively locking a handle to a terminal. A holster for holding the terminal and handle is also shown. A handle with a scanner integrated therein is attachable to a terminal for receiving and storing information read by the scanner.

Abstract: A stacking arrangement for combining a plurality of discrete interconnected electronic modules in aligned stacked relation includes a plurality of modules having discrete three-dimensional housing enclosures. Integral cooperating pin and socket electrical connector units are mounted in the top and bottom panels for interconnecting respective facing panels of juxtaposed modules electrically to interconnect all stacked modules in a manner not externally visible. An integral intermodular ventilation system is provided that has matching openings in corresponding facing top and bottom surfaces of the modules in aligned relation to accommodate continuous vertical intermodular air flow and includes one or more fans for pressurizing the stack and impelling air to flow through the stacked modular arrangement. A cover mounts on top of the ultimate functional module covering the pin and socket connecting unit of the top module and contains a plurality of side openings to accommodate outward ventilation flow.