69 results about "DeviceNet" patented technology

A network diagnostic device is provided, which comprises a passive real-time measurement tool that is useful for, among other things, expediting fault identification, isolation, and repair of a communication network or bus. The device also facilitates prediction of failures by identifying marginal operating conditions. The device analyzes data flowing through the communication network, including through an analysis of variations in bit waveform shape carried by the network physical interconnect media. In one embodiment, an implementation of the network diagnostic device is particularly useful in a DeviceNet-compatible network or, more generally, a Controller Area Network (CAN). The device identifies faults by comparing measurements made on the actual DeviceNet bus with worst-case acceptable criteria. The device interfaces with a remote monitoring computer via an Ethernet compatible medium to display parsed bit-level waveforms, network warnings and errors, as well as an overall network health index.

The invention relates to a converting method between multiple protocol buses. The method uses a microprocessor, a DeviceNet, a Profibus and the physical layer part circuit and microprocessor program of a Modbus/TCP network protocol to receive different protocol data, store them in the microprocessor, adopts system protocol converting method to realize the protocol converting between multiple protocols. While the task scheduling method using real time multi-task operation system is adopted in the whole protocol converting process, consequently, the real time interaction and updating control of multiple protocol converting data is realized.

The present invention discloses a DeviceNet fieldbus I/O device with short-circuit protection and self-diagnostic function, which comprises the following components: a DeviceNet interface unit which is used for executing data communication between the DeviceNet fieldbus, setting the bus node number and the communication baud rate of this node, and collecting and storing the input interface state and output interface state diagnosis data; an input/output short-circuit protecting and self-diagnosis unit which is used for executing data communication between the peripheral equipment, switching off the power for short-circuit protection and transmitting the input interface state and/or output interface state diagnosis data to the DeviceNet interface unit when the input/output interface circuit and/or the output interface circuit is shorted. The DeviceNet I/O device of the invention has the functions of short-circuit protection and self diagnosis, can switch off the power and provide self-diagnosis information when the interface power is shorted and automatically recover the operation when the short-circuit trouble is eliminated.

The present invention relates to a closed loop control system of a press, which pertains to the technical field of a control system of the press. The present invention is mainly characterized in that a coder is connected and arranged at the relevant moving part by an industrial field bus, the industrial field bus is connected with DeviceNet host station, and the DeviceNet host station exchanges data with a PLC programmable logic controller; a touch screen and an office computer adopt a closed loop system which consists of Ethernet and the PLC programmable logic controller; the present operation of a lathe can be reflected in real time under the support of various software programs; by using the closed loop control system, the safety of the lathe can be greatly increased, an automatic production line interface is arranged, the real-time operation information of the lathe can be displayed on the touch screen in the form of character, flow chart, sketch map, and the like, for convenient understanding, the statistics of relevant parts can be carried out according to the design parameters of the lathe so as to remind users of regular maintenance. The present invention can obviously increase the work efficiency and facilitate the arrangement and statistics of the work for supervisors.

The invention relates to a field bus communication adaptor with configurable character, which comprises: a DeviceNet interface, a CAN bus transceiver, a MCU, an optical coupling insulation circuit, a RS48 bus transceiver, a RS232 interface chip, a power switch and protection circuit, an EEPROM, a dial switch, a DC-DC power insulation circuit, a serial indicator light, an adapter module indicator light, and a network indicator light. Wherein, it stores in main CPU auto baud rate upload/download process, main program process, configuration program process, running program process, algorithm program process to search CLASS ID and ATTRIBUTE ID, search program process for DeviceNet-Modbus mapping relation, and serial ISR process. This invention has super performance.

The invention relates to a marine low-speed machine air valve welding robot work station control system including a central control system, a robot control system, a welding control system and a sensing detection system. The central control system includes a work station main controller, is communicated with the robot control system through a Profibus DP bus to realize mutual information exchange, acquires the sensing information through an I/O module, and controls a welding robot to move; The robot control system includes a robot control cabinet and a robot demonstrator, controls the robot body and the positioned in a work station to move, is communicated with the welding power supply through a Devicenet bus, and controls a welding system to work; The control system realizes the global control and monitoring of the marine low-speed machine air valve machining procedures, and the marine low-speed machine air valve welding robot work station control system realizes the perfect match of devices, improves the work efficiency, and realizes the automation procedures.

A portable test meter is disclosed for measuring, calculating, recording and monitoring significant system parameters for a local communication network of the type used in industrial automation applications. The meter is disclosed in the context of a network employing the DeviceNet protocol. For each network parameter of interest, a rotary switch selects a desired one for display. An auto search mode selectable by the operator, increments through selected network parameters and compares measured or calculated values against stored data representing acceptable, marginal, or unacceptable conditions, and an associated visual indicia is displayed for each unacceptable or margin condition detected.

The invention relates to a low-voltage electrical appliance communication protocol adapter which comprises double single chips, double Modbus-RTU protocol converting circuits, a Profibus-DP, a DeviceNet protocol converting circuit, an off chip data memory, an LCD (liquid crystal display) screen and a keyboard, wherein on chip universal asynchronous receiver-transmitters of the double single chips are respectively connected with the Modbus-RTU and an RS485 level converting transceiver circuit; an on chip control local area network is respectively connected with double DeviceNet converting transceiver circuits to finish acquiring low-voltage electrical appliance data and responding to bus commands and events; meanwhile, I2C communication modules of the single chips are connected with the off chip data memory based on I2C to finish storing the data and extracting processed low-voltage electrical appliance parameters. Due to the adoption of double processor operations and a caching technology, technical schemes such as response time, and the like when other adapters are operated are reduced so as to ensure that the low-voltage electrical appliance communication protocol adapter becomes a centralized controller, a small network server and an adapter. The adapter can hang at most three buses, thereby increasing the adaptability of low-voltage electrical appliances during networking and facilitating users mounting.

A four-transmission-point-based papermaking machine transmission experimental apparatus comprises an upper computer, a PLC (Programmed Logic Controller), a man-machine interface and at least one group of transmission devices, wherein the transmission devices comprise a frequency converter connected with the PLC, the frequency converter is further connected with a variable frequency motor, the frequency converter is communicated with an encoder by optical fiber, four groups of transmission devices are arranged, the upper computer and the PLC are connected by a PPI (Processor/Peripheral Interface) bus, the man-machine interface and the PLC are connected by either a PROFIBUS or an industrial ethernet bus, the frequency converter and the PLC are connected by any one of PROFIBUS, CAN, industrial ethernet and DEVICENET, the frequency converter and the encoder are connected by optical fiber in a one-to-one correspondence manner, and the frequency converter is further connected with a variable frequency motor. A great deal of data signal wires are saved, the construction work amount is greatly reduced, and the reliability is greatly improved; a touch screen is used as an operating platform, thus saving all buttons, having a visual function, and being clear at a glance; and the whole set of device has the advantages of being good in speed regulation effect, less in faults and convenient to maintain.

The invention relates to a distributed power distribution system of a visual explosion-proof DeviceNet field bus. The hardware of the system consists of an execution unit control layer, a data acquisition protection layer, a visual operation management layer and a control centre. The execution unit control layer comprises a vacuum circuit breaker and a vacuum contactor; the data acquisition protection layer consists of a voltage data acquisition component, a current data acquisition component and a distributed bus-based integrated intelligent load protection device, and the data acquisition protection layer is connected with the visual operation management layer by the DeviceNet field bus; the visual operation management layer is an upper computer which is connected with the control centre by an Industrial Ethernet. The software of the system is the embedded configuration software which is installed in the upper computer. Compared with the prior art, the distributed power distribution system is a complete set of product consisting of a medium-voltage switchgear, a transformer and a low-voltage power distribution device, is matched with the software and the field bus-based intelligent data acquisition controller to realize the remote data acquisition.

The invention provides a semiconductor manufacturing equipment functional simulation-oriented communication protocol mode configuration method, which comprises the following steps of: configuring a Boolean type communication protocol at a digital IO port, configuring a value type communication protocol at an analog IO port, and configuring a character string type communication protocol at a serial port, an Ethernet port and a DeviceNet port; and communicating between a simulation system and equipment by selecting corresponding Boolean type communication protocol, value type communication protocol or character string type communication protocol according to the type of the equipment. The system provides a unified configuration interface externally, and a call interface in the packing, unpacking and assignment process according to the three communication protocol types is the same interface. In addition, all communication protocol formats in the field of semiconductor manufacturing equipment can be configured, so the system has the characteristic of universality in the field of semiconductor manufacturing equipment.

The invention relates to a multi-module data transmission communication system, which is provided with a human-machine interface which is connected with a PLC programmable controller, wherein a DeviceNet bus master station unit is arranged on the PLC programmable controller, and the PLC programmable controller is connected with and controls various execution mechanisms and various detection mechanisms of a hydraulic press through a plurality of slave stations which are correspondingly connected with a plurality of splitters connected with the DeviceNet bus master station unit; the plurality of the slave stations comprise slave station TRIO controllers of a control system, power mechanism slave stations, rear lower right beam slave stations of the hydraulic press, front lower left beam slave stations of the hydraulic press, and operation panel slave stations; and the plurality of the splitters comprise control box splitters, power mechanism splitters, rear lower right beam splitters, front lower left beam splitters and operation box splitters. Remote control modules in various distribution boxes and the PLC programmable controller and the TRIO controllers in a control box are taken as slave stations and connected with the network through a DeviceNet network system, remote I/Os are arranged inside the various distribution boxes respectively, and the slave stations are communicated with a master station module of the PLC programmable controller through bus DeviceNet connection.

The invention discloses a communication device and method for rail transit vehicles. The communication device comprises a world factory instrument protocol (WorldFIP) board card, a DEVICENT board card and a central processing unit (CPU) board card. The WorldFIP board card is used for receiving WorldFIP communication data transmitted by an external WorldFIP device and transmitting the WorldFIP communication data to the CPU board card, and used for receiving WorldFIP processing data transmitted by the CPU board card and transmitting the WorldFIP processing data to the external WorldFIP device. The DEVICENT board card is used for receiving DEVICENT communication data transmitted by an external DEVICENT device and transmitting the DEVICENT communication data to the CPU board card, and used for receiving DEVICENT processing data transmitted by the CPU board card and transmitting the DEVICENT processing data to an external DEVICENT device. The CPU board card is used for recognizing the type of the received data and performing corresponding data switching. By means of the communication device and method for rail transit vehicles, communication between the WorldFIP device and the DEVICENET can be achieved.

The invention discloses a protocol conversion device based on a DeviceNet-Modbus, comprising a DeviceNet interface circuit for receiving, transmitting and analyzing DeviceNet data information converted by a DeviceNet master station and a microprocessor, a Modbus interface circuit for receiving a Modbus command transmitted by a protocol conversion module and transmitting the Modbus equipment response report to the microprocessor for protocol conversion, a parameter setting circuit for setting a communication Baud rate and a bus node number of the communication device and reflecting the working state and the communication state of the communication device in real time. With the hardware structure provided by the invention, the equipment provided with a Modbus interface can access to the DeviceNet network.

The invention discloses an ARM7-based MVB gateway and a working method thereof. The gateway comprises an MVB bus protocol controller, an MVB bus transceiver, an ARM7 central controller, a DeviceNet bus protocol controller and a Device Net bus transceiver, wherein the ARM7 central controller is bi-directionally connected with the MVB bus protocol controller and the DeviceNet bus protocol controller respectively; the MVB bus protocol controller is bi-directionally connected with the MVB bus transceiver; and the DeviceNet bus protocol controller is bi-directionally connected with the DeviceNet bus transceiver. Through the ARM7-based MVB gateway and the working method thereof, the data exchange between the MVB bus protocol controller and the DeviceNet protocol controller is realized by using the ARM7 central controller, and the interconnection problems of DeviceNet field buses of an MVB control network and a widely-used industrial control network special for a locomotive.

The invention discloses a communication device for a rail transportation vehicle and a method. The device comprises a wire-to-board (WTB) card, a DEVICENET card and a central processing unit (CPU) card; the WTB card is used for receiving the WTB communication data sent by external WTB device and sending the WTB communication data to the CPU card, and receiving the WTB processing data sent by the CPU card and sending the WTB processing data to the external WTB device; the DEVICENET card is used for receiving the DEVICENET communication data sent by external DEVICENET device and sending the DEVICENET communication data to the CPU card, and receiving the DEVICENET processing data sent by the CPU card and sending the DEVICENET processing data to the external DEVICENET device; and the CPU card is used for identifying the type of the received data, and correspondingly transforms the data. According to the communication device and the method for the rail transportation vehicle, the communication between the WTB device and the DEVICENET can be realized.

The invention relates to a low voltage apparatus communication protocol adapter comprising a dual microprocessor, dual Modbus RTU protocol conversion circuits, a Profibus DP, Device Net protocol conversion circuits, an off-chip data memory, a liquid crystal display and a keyboard. An on-chip universal asynchronous receiver transmitter of the dual microprocessor is connected to RS485 level conversion transceiver circuits of the dual Modbus RTU protocol conversion circuit and ProfibusDP, an on-chip controller local area network is connected with conversion transceiver circuits of the DeviceNet, and low-voltage apparatus data acquisition and bus command and event response can be completed; a 12 C communication module of the dual microprocessor and a 12 C-based off-chip data memory are connected, and data storage and extraction of processed low-voltage apparatus parameters. According to the technical scheme, a dual microprocessor and the caching technique are adopted, response time of other adapter during operation is shortened, and the low voltage apparatus communication protocol adapter can be used as a centralized controller, a network small-size server and an adapter; connection of utmost three types of buses can be completed, adaptability of low voltage apparatuses during networking is improved greatly, and users can assemble the adapter conveniently.

The invention provides an interface system for a DeviceNet bus. The interface system is arranged between a bottom layer functional unit and an application layer unit, the interface system provides a standard interface irrelevant to a DeviceNet bus device object for the application layer unit, and different details of the device object can be shielded. The interface system is divided into an upper portion and a lower portion, the upper portion is an IOServer module connected with the application layer unit, and the lower portion is an address mapping (ADMP) module for performing address mapping on the bottom layer functional unit. The IOServer module comprises a management interface of the DeviceNet bus. According to access requirements for the DeviceNet bus of the application layer unit, control connection is performed in the bottom layer functional unit so as to achieve connection and disconnection between a device below the DeviceNet bus and a host. The interface system for the DeviceNet bus can shield the different details of the DeviceNet bus, provides the same interface for the application layer unit, facilitates debugging and maintenance of the system, achieves data acquisition of integrated circuit (IC) devices on different semiconductor bottom layer units, improves production efficiency, and reduces production cost.

The extender for prolonging network bus includes main CPU unit, state indication unit, main power source loop, signal processing channel A, signal processing channel B, auxiliary power source and photoelectronic isolating loop. The circuits have the data transmission in the following order: data in the DeviceNet section A is transmitted to DeviceNet section B through port A, signal processing channel A, main CPU unit, signal processing channel B and port B; or vice versa. The present invention realizes the transparent data transmission between different network section. For increased network length and shortened delay time, the CPU has stored automatic baud rate detecting flow chart, signal sending flow chart, signal receiving flow chart and interruption flow chart, and the constituted software and hardware are combined for successful network extending.

The invention discloses a protector core for a motor. The protector core comprises a control device, a detection device, a signal conditioning device, a phase sequence detection device, a short-range serial port device, a remote DeviceNet communication device, a display panel device, an output relay device and a switching power device, wherein the signal conditioning device, the phase sequence detection device, the short-range serial port device, the remote DeviceNet communication device, the display panel device and the output relay device are connected with the control device; the signal conditioning device and the phase sequence detection device are connected with the detection device; and the switching power device provides direct current power for a protector. A working current signal of the motor is converted through the detection device, the signal conditioning device and the phase sequence detection device, the control device controls the output relay device and the display panel device according to various protection algorithms for a thermal overload, a phase sequence and the like to fulfill the aims of protection and field display, and working parameters of the protector are configured and monitored remotely and within a short range to fulfill the aims of intelligent failure control and diagnosis.

The invention provides a pet cage machining method based on an intelligent self-positioning high-frequency welding system. The method comprises following steps: firstly, a metal rod for assembling of a pet cage is prepared; secondly, the intelligent self-positioning high-frequency welding system is adopted to assemble the metal rod into the pet cage, the intelligent self-positioning high-frequency welding system is composed of a vision positioning system and a high-frequency welding machine, the vision positioning system is composed of a three-dimensional laser scanning instrument and an industrial control machine, the three-dimensional scanning vision system is formed, determining of the position of the metal rod is achieved, the high-frequency welding machine is communicated with the industrial control machine through a DeviceNet bus, the industrial control machine controls the high-frequency welding machine to carry out high-frequency welding, and the metal rod is assembled into the pet cage. The pet cage machining method based on the intelligent self-positioning high-frequency welding system is high in production efficiency and capable of producing the pet cage meeting the standard.

The invention discloses a general frequency converter control module based on a DeviceNet field bus, and belongs to the technical field of communication control. The device comprises an input/output interface, an embedded processor, a DevcieNet protocol conversion module, and a DevcieNet network interface. One end of the input/output interface is externally connected with a frequency converter, the other end is connected with the embedded processor. The embedded processor is in communication connection with the DevcieNet protocol conversion module. The DevcieNet protocol conversion module is in communication connection with the DevcieNet network interface and is in communication with the DevcieNet network through the DevcieNet network interface. Due to the fact that the digital quantity input and output interface and the analog quantity input and output interface are provided, the module is directly connected with the frequency converter in a simple connection mode, control signals ofthe frequency converter are converted into DeviceNet field bus control signals, and all PLC systems supporting DevcieNet field buses can be conveniently connected to achieve automatic control.

The invention relates to an encoder cross-comparison device of a refueling machine, and belongs to the technical field of nuclear power station maintenance. The device comprises n encoders, a shaft coupling, a DEVICENET bus, a DEVICENET module, a CPU module, a power supply module, an industrial control computer and fibers. A fault encoder can be determined from the multiple encoders by cross comparison in the offline condition, and the enterprise cost can be reduced a lot; more sound encoders can be recovered and used, the maintenance time is reduced a lot, and a nuclear power maintenance staff receives radiation in less time; a fault of the single encoder can be also determined, and the sound encoder can be recovered; and power supply for a tester is flexible, and the whole system can beerected simply onsite. The device can help new staff of nuclear power and working-group members of a partner enterprise master basic skills including IP address setting of the CPU module, online download of configuration software and DEVICENET communication protocol based encoder maintenance.

A DeviceNet-based weighing instrument. The weighing instrument has the advantages of digitization, intelligentization and communicationization, realizes long distance, high speed, reliability, flexibility and low cost of an electronic belt scale control system, and improves metering performance. The DeviceNet-based weighing instrument comprises a power supply system module, a sensor input module, an analog output module, a Nixie tube display module, a keyboard interface and a DeviceNet bus communication interface, and is structurally characterized in that the sensor input module includes a weighing sensor and a speed sensor, collects a voltage signal, and amplifies the voltage signal through processing of an amplifier circuit of a signal conditioning circuit and photoelectric isolator; and the photoelectric isolator and a keyboard interface are connected with a single-chip microcomputer, an output end of the single-chip microcomputer is connected with a PWM output module, an LED display module and a DeviceNet processor, and the DeviceNet processor performs isolation and transceiving through a CAN bus.