Abstract: According to various aspects and embodiments, a programmable device configured for use within an industrial control system is provided. The programmable device includes a memory storing a plurality of root certificates, the plurality of root certificates including an active certificate and one or more secondary certificates, and at least one processor coupled to the memory. The at least one processor configured to receive an identifier of a secondary root certificate of the one or more secondary root certificates, and activate the secondary root certificate in response to receiving the identifier.

Abstract: According to various aspects and embodiments, a programmable device configured for use within an industrial control system is provided. The programmable device includes a memory storing a plurality of root certificates, the plurality of root certificates including an active certificate and one or more secondary certificates, and at least one processor coupled to the memory. The at least one processor configured to receive an identifier of a secondary root certificate of the one or more secondary root certificates, and activate the secondary root certificate in response to receiving the identifier.

Abstract: Network-enabled electrical power distribution equipment comprises at least one networked intelligent device coupled to a power distribution system and measuring and storing at least one sensed condition in the power distribution system; a server for storing and retrieving data relating to the sensed condition and the power distribution equipment; local storage coupled to the server; remote network storage accessible to the server via the network containing that server; and a program operating on the server for controlling the storing of data in, and the retrieval of data from, the local and remote network storages.

Abstract: Network-enabled electrical power distribution equipment includes one or more networked intelligent devices coupled to a power distribution system and measuring and storing at least one sensed condition in the power distribution system; a server in the power equipment for storing a document that can be accessed by browsers and that contains data relating to the sensed condition; a content management system in the power equipment for maintaining a document that can be accessed by browsers and that contains a log of information relating to the power equipment; and a user interface for accessing the document containing the log of information and editing the information contained in the log. The log of information relating to the power equipment may be a web log or a wiki. The content management system can be included in a web server in the power equipment, the user interface can include a web browser, and the network can include a LAN, a private WAN and/or a public WAN such as the Internet.

Abstract: Network-enabled electrical power distribution equipment comprises at least one networked intelligent device coupled to a power distribution system and measuring and storing at least one sensed condition in the power distribution system; a server for storing and retrieving data relating to the sensed condition and the power distribution equipment; local storage coupled to the server; remote network storage accessible to the server via the network containing that server; and a program operating on the server for controlling the storing of data in, and the retrieval of data from, the local and remote network storages.

Abstract: An industrial human-machine interface device that permits speech-controlled navigation through a menu using a speech-recognition processor. The speech-recognition processor is coupled to a microcontroller and a display. The microcontroller is interfaced with a power metering device which monitors a power signal in a circuit. To obtain a reading of a characteristic of the power signal, the operator speaks a spoken keyword into a microphone of the human-machine interface device. The speech-recognition processor converts the keyword into an identification word which is outputted by the processor to the microcontroller. The microcontroller polls the output of the processor, and upon detection of an identification word, executes a function associated therewith. Menu navigation among consecutive or nonconsecutive menu levels is performed by speaking one or more predetermined keywords.

Abstract: A remote metering display is used for displaying power-related information generated by a power meter linked to the display. The remote metering display comprises a display screen, a plurality of user interface buttons for navigating through menu options depicted on the display screen, and a motion sensor for activating the display screen in response to detection of a person's presence within a predetermined distance of the motion sensor.

Abstract: A communication scheme which allows Internet access to selected services behind a corporate firewall on a corporate Intranet with a publisher on the Intranet in communication with the Intranet web services and a listener on the Internet and is responsive to select requests from an Internet user which are embedded in responses received from the listener responding to queries from the publisher.

Abstract: An industrial human-machine interface device that permits speech-controlled navigation through a menu using a speech-recognition processor. The speech-recognition processor is coupled to a microcontroller and a display. The microcontroller is interfaced with a power metering device which monitors a power signal in a circuit. To obtain a reading of a characteristic of the power signal, the operator speaks a spoken keyword into a microphone of the human-machine interface device. The speech-recognition processor converts the keyword into an identification word which is outputted by the processor to the microcontroller. The microcontroller polls the output of the processor, and upon detection of an identification word, executes a function associated therewith. Menu navigation among consecutive or nonconsecutive menu levels is performed by speaking one or more predetermined keywords.

Abstract: A remote metering display is used for displaying power-related information generated by a power meter linked to the display. The remote metering display comprises a display screen, a plurality of user interface buttons for navigating through menu options depicted on the display screen, and a motion sensor for activating the display screen in response to detection of a person's presence within a predetermined distance of the motion sensor.

Abstract: A metering unit, located in a distributed power network carrying a power-related waveform, comprises a sensor, a generator, and a memory. The sensor senses power-related parameters associated with the power-related waveform. In response to the sensor, the generator generates and transmits data representative of the power-related waveform. The memory is a sector-erasable flash EEPROM having stored therein programmable logic and main functionality firmware for execution by the generator. The logic is programmable by a user and executable by the generator to increase operations performed by the metering unit.

Abstract: An improved metering unit is described which samples a power-related waveform and simultaneously captures its analog signal parameters for temperature and all phases of voltage and current, providing a more accurate and clearer waveform sample that effectively detects harmonics problems and does not require signal interpolation methods. The improved metering unit comprises signal conditioning circuitry interfacing with the power line for sensing temperature and all desired phases of voltage and current parameters of the waveform. The metering unit further comprises a processor having a timer output. The timer output controls track and hold circuitry and an A/D converter. The timer output places the track and hold circuitry in the hold mode to simultaneously capture temperature and all the desired phases of voltage and current of the waveform, and, at the same time, the timer output triggers the A/D converter to convert the captured analog signal parameters into digital sample values.

Abstract: Firmware is downloaded to a metering unit located in a distributed power network carrying a power-related waveform, where the metering unit senses power-related parameters associated with the power-related waveform and generates and transmits data representative thereof. The metering unit is provided with a sector-erasable flash EEPROM having a first section for storing main functionality firmware and a second section for storing boot code. The boot code includes a reset portion for resetting the metering unit and a firmware update section for downloading external firmware to the first section. The firmware update section includes a writing routine for writing the external firmware to the first section. The metering unit is also provided with a volatile RAM. The external firmware is downloaded to the first section of the EEPROM by executing the firmware update section.