56 results about "FOUNDATION fieldbus" patented technology

The invention relates to a programmable controller based on on-site high-speed Ethernet of foundation, wherein it uses PLC target system with two embedded controllers, as FF on-site bus interface card and PLC operator; the FF on-site bus interface card has the flexible function block for inputting/outputting function as multi-path analogue input/output function block and multi-path digit input/output function block, to be used as the remote data interface of PLC; the PLC is seamlessly integrated on the FF HSE bus; and it uses detecting diagnosis function block to detect the PLC operation by superior machine; and the PLC algorism programming system of superior machine via FF on-site bus interfaces card can download algorism (TIC code) and I/O distribution document. The invention can realize single-machine on-site control, and interact with FF on-site device as remove control.

A hand-held communication control device which, when coupled to a process control system communication bus, controls communication occurring on the bus using a communication schedule that dictates when each of the devices coupled to the bus will be permitted to communicate on the bus. The hand-held communication control device further uses a probing algorithm to detect devices, including other communication control devices, that are coupled to the bus. The probing algorithm causes the hand-held communication control device to select an address from one of a set of three address lists to which a probe node message is then transmitted to detect the presence of a device at that address. One of the address lists is reserved for communication control devices and uses only a limited number of maximum possible addresses. The probe addresses are selected from each of the three address lists in a sequential manner and from among the three address lists in an alternating manner so that, when the communication control device takes control of a bus formerly controlled by another communication control device, the hand-held communication control device detects the presence of the other communication control device and relinquishes control of the bus to the other communication control device in a timely manner.

An industrial process control system is provided that includes one or more fieldbus devices configured to communicate alarm or alert information representative of alarms and alerts using a first format. The industrial process control system also includes a linking device connected to the one or more fieldbus devices that is configured to publish the alarm or alert information from the fieldbus devices to one or more computers of the industrial process control system. A controller is also included that is configured to receive the alarm or alert information from the linking device. The controller is configured to interpret the alarm or alert information and create a list of the alarms and alerts in a second format interpretable by an alarm server of the industrial process control system, wherein the alarm server cannot interpret the first format.

Control systems and methods for controlling certain systems, devices, and apparatus are described. A control system may include a memory and at least one processor. The memory may be operable to store both a Foundation Fieldbus protocol that facilitates communication with one or more Foundation Fieldbus devices and a second protocol that facilitates communication with one or more control devices. The at least one processor may be operable to access both the Foundation Fieldbus protocol and the second protocol, and to control the one or more Foundation Fieldbus devices and the one or more control devices. A network may facilitate communications between the at least one processor and both the one or more Foundation Fieldbus devices using the Foundation Fieldbus protocol and the one or more control devices using the second protocol.

The invention discloses a control system comprising foundation fieldbus (FF) protocol H1 field-level network. The control system comprises a plurality of FF protocol H1-field network for supporting the FF protocol; a control network for supporting other protocols; and further an interface device for connecting the FF protocol H1 field-level network and the control network, acquiring on-site parameters and information of equipments in the FF protocol H1 field-level network, converting to the information that can be identified by the control network, and providing to the control network; wherein the control network calculates, converts the calculation results to FF protocol information and provides to the equipments in the FF protocol H1 field-level network. The invention discloses an interface device and a communication method at the same time. The invention realizes the information interchange between the equipments in the FF protocol H1 field-level network and the control network through the interface device, and realizes the control of the conventional control network to the equipments in the FF protocol H1 field-level network, so as to take full advantages of and expand the function of the conventional control network, and avoid wasting of resources.

The control structure includes two pieces of equipment. The first equipment includes one analog amount input module connected to the sensor; and the second equipment includes control module, analog amount output module connected to the executor. The first equipment has one increased prediction control module and one control module with the same parameters as that in the second equipment; and the second equipment has also one increased prediction control module the same as that in the first equipment. Universal configuration software is used in configuring the parameter connection of the modules in the first equipment and the second equipment. The present invention reduces the bus network communication load to raise the real-time property and determinacy of bus network in data communication. The present invention also warns the error sampling data, acting as the second sensor to raise the stability of the control system.

The invention relates to the field of automatic control, and in particular discloses a fieldbus communication card, which is used for coding and decoding fieldbus data based on an FBC0409 fieldbus controller. The fieldbus communication card also comprises a fieldbus signal filter circuit for receiving bus signals, a bus voltage signal modulation circuit for converting coded digital signals into voltage signals corresponding to the waveform of the bus signals, a master control circuit communicated with the fieldbus communication controller and other peripheral equipment, and a bus power supply/current modulation circuit. The fieldbus communication card solves the problem that Foundation Fieldbus and PROFIBUS PA fieldbus communication cards cannot be developed currently at home, gets rid of dependence on imported fieldbus instruments, and has the characteristics of running two fieldbus protocols of Foundation Fieldbus and Profibus PA based on the same hardware, having low cost and the like.

The invention provides a foundation fieldbus (FF) H1 temperature measuring device. The device comprises a temperature sensor, a sensor signal regulating unit, an analog-to-digital conversion unit, a microprocessor, a field bus communication controller and a media connecting unit, wherein the temperature sensor collects temperature of point testing equipment; the sensor signal regulating unit performs signal amplification and filter processing on the temperature collected by the temperature sensor, and transmits the processed signal to the analog-to-digital conversion unit; the analog-to-digital conversion unit performs analog-to-digital conversion on the signal transmitted by the sensor signal regulating unit, and transmits the converted digital signal to the microprocessor; the microprocessor performs linear processing and temperature compensation on the digital signal, and transmits the processed signal to the field bus communication controller; the field bus communication controller converts the signal transmitted by the microprocessor into FF H1 data link layer data, and transmits the data to the media connecting unit; and the media connecting unit converts the data link layer data into physical layer data, and transmits the physical layer data to the FF H1. The device performs transmission by adopting the digital signal, and has strong interference resistance, so the measured temperature is more accurate.

Systems and methods are provided for recording data associated with the operation of Foundation Fieldbus devices. Device parameter data associated with one or more Foundation Fieldbus devices may be received by a device comprising one or more computers. A visual representation of the operation of the one or more Foundation Fieldbus devices may be generated by the device receiving the device parameter data. The device may then record at least a portion of the device parameter data received to generate the visual representation.

The invention discloses a functional block with an FF (foundation fieldbus) interface. The functional block comprises a data storage and a control logic module. The data storage comprises an operational data storage which opens for the external upper layer module of DCS (distributed control system). By real-time monitoring and online modifying data in the operational data storage, the external upper layer module of the DCS monitors in real time and modifies online the data of an instrument functional block. The control logic module only modifies the data of the instrument functional block when data content in the operational data storage changes, namely, modification is performed when data in the instrument functional block needs to be modified, and accordingly network load is lowered. By the functional block with the FF interface, the DCS is can control an FF device. The functional block can be built in a central control unit of the DCS. Mixing control of the DCS and the FF device can be achieved by building control schemes between the central control unit and the lower field instruments by the aid of the external upper layer module of the DCS, functions such as real-time monitoring, online modifying, warning and browsing can be performed by the DCS to the instrument functional block.

An apparatus is provided for facilitating integration of a wireless field device (such as a wireless sensor or actuator) and a wired protocol that is used in a process control system. The apparatus supports a wireless field device protocol for communicating with the wireless field device. The apparatus also supports a wired field device protocol for communicating with other components of the process control system over a network. The apparatus could map a wireless application model associated with the wireless field device protocol to a wired application model associated with the wired field device protocol. The apparatus could actually support multiple mappings from the wireless application model to wired application models associated with multiple wired field device protocols. As particular examples, the wired field device protocol(s) could include the HART, Foundation Fieldbus, Profibus, and/or Modbus protocols. The network could represent an Ethernet network or a serial network.