Abstract: A control system includes an Internet web interface to a network of at least one programmable logic control system running an application program for controlling output devices in response to status of input devices. The Web interface runs Web pages from an Ethernet board coupled directly to the PLC back plane and includes an HTTP protocol interpreter, a PLC back plane driver, a TCP/IP stack, and an Ethernet board kernel. The Web interface provides access to the PLC back plane by a user at a remote location through the Internet. The interface translates the industry standard Ethernet, TCP/IP and HTTP protocols used on the Internet into data recognizable to the PLC. Using this interface, the user can retrieve all pertinent data regarding the operation of the programmable logic controller system.

Abstract: A system and corresponding method for communicating non-I/O data between components of an industrial control system (ICS) including control or automation devices and a programmable logic controller. The method includes the steps of: having one of the components, such as a control or automation device, transmit the non-I/O data formatted as a message frame in the same way as a I/O data is formatted as a message frame, including having a message type identifier to identify that the message frame bears non-I/O data; and having another of the components, such as the programmable logic controller, receive the encapsulated non-I/O data as a message frame, wherein the receiving component identifies the non-I/O data based on the message type identifier conveyed with the message frame and extracts the non-I/O data from the message frame. The transmitting component transmits the non-I/O data over a field bus such as a PROFIBUS, INTERBUS, DEVICENET, CAN, or CAN OPEN types of field bus.

Abstract: A method for detecting, in real time, high energy transients in an electrical power system, the method including obtaining real time data defining a power waveform, converting the data to digital data, calculating from the digital data a plurality of test point values, calculating incremental area values corresponding to differences between each adjacent pair of the plurality of test point values, an incremental time interval between adjacent the test point values being defined as a unit width of the area, such that the cumulative area under the waveform at a given testpoint is equal to the sum of the area calculated at that test point and the area, calculated at the previous test point, calculating the area of the waveform between adjacent pairs of test points by substracting the cumulative area at the later in time of the test points from the cumulative area at the earlier in time of the test points, and comparing each the area calculated under the waveform with an area at corresponding points in time on an

Abstract: A software system that includes text messages intended for viewing by a user, where the user can select at any time from various supported spoken languages, the language in which the text messages are to be provided, i.e. a multi-language software system.

Abstract: A control system includes an Internet web interface to a network of at least one programmable logic control system running an application program for controlling output devices in response to status of input devices. The Web interface runs Web pages from an Ethernet board coupled directly to the PLC back plane and includes an HTTP protocol interpreter, a PLC back plane driver, a TCP/IP stack, and an Ethernet board kernel. The Web interface provides access to the PLC back plane by a user at a remote location through the Internet. The interface translates the industry standard Ethernet, TCP/IP and HTTP protocols used on the Internet into data recognizable to the PLC. Using this interface, the user can retrieve all pertinent data regarding the operation of the programmable logic controller system.

Abstract: A metering module has a housing, a metering circuit in the housing for receiving and processing at least one signal corresponding to an electrical quantity, and developing an output signal. A connector mounted to the said housing is coupled to the metering circuit, and configured for engagement with a mating connector at least one of a sensor array module and a mounting and connection base. Mounting structure is provided on the housing for removably mounting the housing to at least one of a sensor array module and a mounting and connection base. A circuit in the housing delivers voltage and current signals received at the first and second connectors to a further connector mounted on the housing. First and second mounting structures are provided for mounting the housing to a surface and for mounting a removable metering module.

Abstract: A communications adapter and method are provided for interfacing between a master device and an I/O device (body) having an output and/or an input. In the case of the I/O body having an output, the adapter has a TCP port for coupling to the master device via a transmission path for receiving a request message. The adapter also has a connector for operable coupling to the I/O device for receiving the output of the I/O device. The adapter further has an interface circuit operably connected to the TCP port and the connector for transmitting a response message over the transmission path in response to the request message, the response message correlating to the output received from the I/O device. The request message and the response message is limited to a length that is less than a TCP transaction length and/or a maximum transmission unit limit, or both, depending on the embodiment of the present invention.

Abstract: A method for calculating a first and second gain for a controller circuit for a plant is disclosed. The method comprises the steps of providing a reference model circuit with desired circuit characteristics, providing a reference model adaptive circuit, setting the second gain to zero, supplying a spectrally rich input signal to the reference model and to the controller circuit, determining the first gain by continuously adjusting the first gain until an output of the reference model and an output of the controller circuit are substantially equal, setting the first gain to the previously determined value, determining the second gain by continuously adjusting the second gain until an output of the reference model and an output of the controller circuit are substantially equal and setting the second gain to the previously determined value.

Abstract: A first system is provided having a plurality of analog input signals for a plurality of analog input devices. Each analog input signal has an analog input signal value. The first system converts each analog input signal value to an ultimate digital input value. The first system has an input converter for converting each analog input signal to a digital input signal having a digital input value. The digital input value directly corresponds to the analog input signal value. The first system also has a conveying means for conveying the analog input signal value as an ultimate digital input value without performing any additional conversion. A second system is also provided having a plurality of analog output signals for a plurality of analog output devices. Each analog output signal has an analog output signal value, and each analog output signal value is converted from an initial digital output signal value.

Abstract: A method and a device for high-speed scale conversion wherein a value N within a range of N1 and N2 is converted into a small value M within a range of M1 and M2. The method includes the step of obtaining an approximate value of M by loading the value (N−N1+2p−1) into a multi-bit shift register and right-shifting p bits. A binary search process is then used to determine the error value between the actual value of M and the approximate value of M. By avoiding actual multiplication processes, the conversion can be carried out using low-cost electronic hardware such as a microprocessor or a PROM to carry out the binary search process, a shift-register to obtain the approximate value of M, a multiplexer to receive an analog input data N and an A/D converter to convert the analog input data N into a digital data N.

Abstract: A bridge is disclosed for providing a connection between a MODBUS Plus network and an Ethernet network. The bridge includes a MODBUS circuit board, an Ethernet circuit board, and a CPU. The MODBUS circuit board is operably coupled to the local area network for receiving a message from an originating node having a five-byte routing path field. The CPU is operably connected to the circuit board for extracting a table location in response to a third byte within the routing path field. The Ethernet circuit board is operably connected to the CPU and the Ethernet network for forwarding the message to an IP destination in response to the table location.

Abstract: This invention relates to a cooling system for a transformer. Cooling panels of a radiator are fluidly connected to the transformer. Plates are positioned adjacent to or toward the ends of the cooling panels to form an enclosed flow path thereby increasing the velocity of air therein.

Abstract: A method and system for performing a task in an intrinsically safe environment using an intrinsically safe, integrated module located on the safe side to convey signals to and from a field device on the hazardous side. The integrated module is configurable in order to suit the electrical characteristics and requirements of the field device. Preferably, the integrated module is software configurable, in that the module can be configured by a command signal without using switches. Furthermore, the integrated module is configurable in order to control the field device in performing the task. The integrated module includes an input/output module which is electrically connected to the field device through a Zener barrier or a galvanic isolation barrier, and a power supply to power the field device through a Zener barrier.

Abstract: A dry-type power transformer has a lower acoustical noise level by inserting sound absorbing pads at predetermined locations in an air gap formed longitudinally between a low voltage coil and its corresponding leg member of the transformer's iron core. The pads function as baffles to lower the acoustical noise caused by magnetostriction and other forces when the transformer is energized. The pads are arranged in alternate patterns between the top and the bottom of the air gap.

Abstract: An improved method for creating cooling ducts in cast resin coils uses uniform cross section thermoplastic tooling segments. These segments are wound into windings between predetermined layers or radial sections, oriented parallel to the coil axis. They extend through the height of the coil. After the coil is cast, impregnated, or saturated with resin, and the resin is cured, the segments are withdrawn. The removal of a segment results in a continuous cooling duct. The thermoplastic segments are either solid machined from sheet or extruded with thin outer walls. Extrusion allows for uniform cross section relatively long somewhat flexible segments, which will cause the radius of curvature of the segment to conform to the shape of the coil due to the tension from the conductor and reinforcing material during the winding process. This will have the result of reducing the number of different segment designs required to support production of a variety of different diameter coils.

Abstract: The present invention is directed to an apparatus for communication with at least one device which resides on a standard communications network using a standard communications protocol. The apparatus has a scanner for scanning the device, a device scan table for storing data relating to the device, and a standard communications interface for interfacing between the device scanner and the standard communications network using the standard communication protocol. The present invention is also directed to a device scanner for a first device located on a first node of a standard communications network. The device scanner is provided for scanning devices on the standard communications network, and for identifying a second device on a second node of the standard communications network.