384 results about "Profibus" patented technology

The invention relates to an underground central pump room draining automatic monitoring system, which comprises a PLC control cabinet, a remote expanding module, a site data bus, a contact screen, an analog quantity and switching value input module, various monitoring probes, a travel switch, a level instrument and an executable section. A monitoring net adopts a form of combining a PROFIBUS DP site data bus and an industrial ethernet. A monitoring method for the system comprises: (1) monitoring the absorbing well water level; (2) monitoring the state for starting a high pressure switching cabinet by a water pump; (3) judging the valve levels of a gate valve, a ball valve of a water jet pumping device and a water distribution gate; (4) judging the valve levels of a vacuum pump ball valve; (5) measuring each equipment temperature measuring point; (6) measuring signals of a pressure sensor and a negative pressure sensor; (7) judging system faults; (8) automatically controlling the start-stop and operation numbers of the water pumps according to the absorbing well water level conditions; and (9) setting power supply peak avoiding time periods, and automatically selecting starting time and numbers of a pump. The system improves the system working reliability, reduces the equipment fault rate, and adopts a three-stage monitoring structure for a draining system.

The invention relates to a converter tilting electric drive control system, which comprises a plurality of frequency converters and a plurality of tilting electric motors which are respectively controlled by the inverters, wherein, a frequency converter is defined as a logic master frequency converter by a Master PLC, and others are defined as logic slave frequency converters by the Master PLC. All frequency converters are provided with CBP2 communication boards and communication that comprises given speed, control word and status words with the PLC through the Profibus-DP network is achieved;through analog channels that CUVC board comes with, a ring connection is formed among all frequency converters, to transmit torque components. The invention has the advantages of being simple and reliable, convenient on-line switching, high-precision control, fast dynamic response, and effectively solving the defects of poor balance, dynamic response slow and mechanical damage greater caused by that a speed controls three torque controls traditionally, or a control method that finds the balance torque by using the flexible machinery traditionally.

The control system includes VME bus chassis, CPU main board, Ethernet comm interface board (CIB), reflection memory CIB, PROFIBUS CIB, digital signal interface board, analog signal interface board, and electrical motor control board (MCB). Boards and cards are inserted to backboard inside the VME bus chassis. Through VME bus, boards and cards in backboards inside same chassis can communicate each other through VME bus. Each board contains VME bus controller. VME bus controller implements functions of gating board, bus arbitration, interrupt response control, and reading and writing data. Each board possesses own address. Through VME bus, gated board exchanges data to CPU board. Using shared memory exchanges data between CPU boards in same backboard bus. The reflection memory CIB executes remote comm and real time control among multiple control systems. MCB can exchange data to CPU main board, and control motor through optical fiber interface driven by power switch in bottom layer.

The invention discloses an automatic control system for a moderate-thickness plate roller quenching machine, and belongs to the technical field of heat treatment automatic control. The system consists of a PLC (Programmable Logic Controller) and interface system, a process control system and a track communication system, and is characterized in that: 1, water spray parameters are accurately controlled by using an intelligent algorithm to realize flow and pressure double-closed-loop control; 2, calculation is performed through procedure distribution, function trigger and quenching parameters to realize high-accuracy temperature control, plate shape control and model self-study; 3, a communication intermediate packet developed on the basis of TCP/IP (Transmission Control Protocol / InternetProtocol), OPC (Optical Proximity Correction) and PROFIBUS-DP can realize smooth data connection of the quenching machine and the MES (Manufacturing Execution System) as well as upstream and downstream equipment and meanwhile realize accurate transfer of data between subsystems; and 4, a trigger mechanism is adopted to realize queue macro tracking and position micro tracking of a steel plate of aquenching region. By adopting the system, the problems of complex control and low control accuracy of the roller quenching machine are solved well, and automatic and one-key operation of the roller quenching machine is realized.

This invention unfurls a kind of embedded model numerical control flat roof of processing state controlling politic integration and its control method. The hardware system of the numerical control flat roof includes the motion control module with PC/104 - Plus interface, the CPU module based on PC/104 - Plus, the multifunction data collecting module based on PC/104 - Plus, the CAN communication module based on the PC/104 - Plus, and the Profibus communication module. The controlling method is: the main system translates the operation instructions into motion control messages after receiving them, and sends the progressing messages to the motion control module, finally sends them to the processing servo axis electrical engine drive, the chief axis electrical engine drive and the handwheel; send the motion control messages to CAN communication module and the Profibus communication module, and send outside to the motion servo axis electrical drive. This invention can realize that the processing state is controllable and the progressing course is intelligent.

A wind-electric set control system includes the center controller PLC, the intermediate relay panel, the soft merge network control panel, the display operation panel and the connector. The center controller PLC mainly includes CPU module 315-2DP, digital input module DI, digital output module D0, high-speed counter module FM350-2, analog input module AI, communication module CP340; the intermediate relay panel comprises a number of DC coil relays. The intermediate relay panel and the soft merge network control plane respectively connect with the input and output modules of the center controller PLC, and connect with the controlled object through connector. The system uses the intermediate relay panel to isolate the input/output signal, which improves the resist interference ability of the system. The soft merge network control uses current-limit soft-cut-in control strategy, to make the merge network processing more stable. This invention limits the merge network number of the small motor in one hour, which cleverly solves the small stop problem of the wind-electric set, and it uses PROFIBUS field bus technology to communicate with the central monitor computer.

The invention discloses a protocol conversion device based on a PROFIBUS-DP master station field bus, which is characterized by comprising a C101-PFB module, a C101-CPU (Central Processing Unit) module and a C101-DB module. The C101-PFB module, the C101-CPU module and the C101-DB module exchange data through a 256k-byte high-speed shared memory; and the C101-PFB module is in networking interconnection with each PROFIBUS-DP substation through an RS485 serial electric port (or communicating with an HFB2 module to be converted to an optical port). The invention can reduce the development cost of the PROFIBUS-DP master station.

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.

A method and system are disclosed for providing enhanced user access to Profibus device diagnostic data and cyclic data in a distributed control system. After receiving input parameter data originating from a Profibus device message, the I/O module assembly performs steps for processing, maintaining and providing the input parameter data to a requesting control processor. The processing step includes extracting parameter values from a received Profibus device message. The extracted parameter values are then deposited in a repository on the I/O module assembly. The parameter values include both input and diagnostic parameter values. The diagnostic parameter values are provided to a workstation executing a Profibus device commissioning/configuring application in the form of data bits. The application generates a set of diagnostic text messages, based upon current values of diagnostic data bits representing diagnostic statuses of the Profibus device, by applying a configurable set of diagnostic message definitions to the diagnostic parameter data bits.

The invention discloses a profibus-DP communication protocol redundancy master station which comprises a master station communication card and a master station backup card; the master station communication card is in a working state, exchanges data with a slave station through a display port (DP) interface circuit, and exchanges data with a central processing card piece through a dual port RAM (DPRAM) interface circuit; the master card communication card periodically backs up the parameter set of the master station communication card and the real-time input/output (I/O) data of the slave station to the master station backup card; and the master station backup card is in a heat backup waiting state, takes over the work of the master station communication card when the master station communication card fails to work, and periodically receives the parameter set of the master station communication card sent by the master station communication card and the real-time I/O data of the slave station. According to the Profibus-DP communication protocol redundancy master station, a working master station is not required to work together with a backup master station, can be connected with a DP slave station or directly connected with the redundancy master station products of the DP slave station; and the defects caused by the redundancy method of an existing master station that the selection of master station products is greatly restricted and the cost is increased after the single-DP slave station is connected in are overcome.

The invention relates to full automatic sheet material shearing mechanism. It is formed by eights sets of machine tools and measurement control systems. The latter is DAC-350 numerical control system, combines with Siemens PLC and Profibus-DP bussing technique, touch screen human-machine interface, bus transducer hanging connecting control, position transducer hanging connecting control to realize full automatic unmanned operation. It has friend human-machine interface, self-diagnosis function, operation guiding, and real time operation help function.

The invention relates to a system and a method for controlling the automatic coal injection of a blast furnace serial pot, which belongs to the technical field of the automatic coal injection of a blast furnace serial pot. The system comprises a hardware monitoring system and a software processing module. The system is characterized in that a Siemens PLC control system and an upper monitoring system is connected by a Profibus network to monitor the state of each coal injection process; the real-time data communication of model calculation and automatic regulation with coal injection is realized by an Ethernet; the software processing module mainly comprises a data acquisition module, a sampled data renewing module, a mathematical model coefficient correction module, a mathematical model calculation module, a fuzzy regulation module and a fast-regulation module; and all parts of the software processing module run on an industrial computer. The system and the method overcome the difficulty that a weighting result of a coal injection system of a serial pot is affected by numerous factors, use many mathematical methods to handle a weighting result of a coal injection pot, are combined with a mathematical model and fuzzy control and realize the automatic coal injection control of a blast furnace serial pot.

The invention relates to a network, in particular a PA PROFIBUS network having redundant properties and a linear topology. Two line ends are connected to a redundancy manager which disconnects said line ends in error-free conditions and connects them in error conditions. Said redundancy manager supplies voltage to the first line end for operating customers' mobile telephones each of which is connected to the network by a branching unit. After receiving a supply voltage on one connection thereof, said branching units check the state of a cable which is connected to the other network connection and transmit the supply voltage in the faultless condition thereof only. When the redundancy manager does not detect the supply voltage on the other end of the line end at least during a predetermined space of time after voltage supply, said redundancy manager supplies the voltage thereto. A cable having a disturbance is then disconnected from the line by the adjacent branching units.

The invention relates to a control system for a multi-wire cutting machine. A multi-wire cutting machine synchronous servo drive and constant tension control system includes an industrial personal computer, a main serve motor, a secondary serve motor and a take-up and pay-off serve motor. The invention is characterized in that the industrial personal computer sets a standard specified value which is sent to a main servo drive, at the same time, high-speed data transmission is carried out between the industrial personal computer and each servo drive via Profibus, the specified value and the data of the main drive are quickly sent to three secondary drive serve motors and the take-up and pay-off serve, the dependence on the synchronous character of each message is synchronously realized, the value synchronous with the main servo is calculated by the take-up and pay-off serve according to the above data and the diameter of the prior take-up reel and the line tension in the industrial personal computer, and the result is transferred to the take-up and pay-off serve via the Profibus bus.

This invention relates to a spot intelligent unit and its operation method supporting industry communication network agreement, which comprises control unit and communication port module. The communication port module realizes the MODBUS/TCP industry Ethernet agreement or DeviceNet spot bus agreement or Profibus-DP spot bus agreement. The control unit has a microprocessor connected with A/D converter, D/A converter through light couple device, wherein its switch input, output and A/D converter and D/A converter are connected with the control subject.

The invention discloses a device and method for controlling an electronic-controlled engine. The device comprises an IPC (Industrial Personal Computer) with a touch screen, a PLC (Programmable Logic Controller), a gateway, an ECM (electronic control module) of an electronic-controlled engine, a rotating speed sensor, an oil atomizer and an oil pressure control valve, wherein the gateway integrates a ProfiBus system and a CAN bus system into a whole, so as to enable the IPC attached to the ProfiBus system to send command values of rotating speed, torque and accelerator opening degree to the ECM attached to the CAN bus system, and then the ECM controls an engine to operate; meanwhile, the ECM can send the actual values of the rotating speed, the torque and the accelerator opening degree of the engine to the IPC, so as to realize the monitoring and control for the electronic-controlled engine; the PLC places parameters read from the IPC into an output cache module inside the PLC; the ProfiBus-J1939 gateway reads parameters from the output cache module of the PLC and sends the parameters to the ECM of the engine through the CAN bus; the ECM obtains the engine command value parameters to control the operation of the engine.

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.

The invention relates to an embedded universal Prifibus-DP slave station device on the basis of a FDGA (Field Programmable Gate Array), which comprises a core unit, i.e. a protocol conversion module and a peripheral unit, wherein the protocol conversion module is used for analyzing a message, processing data and completing data exchange; and the peripheral unit is used for carrying out communication exchange of the data packaged according to a Profibus format with a Profibus-DP network, eliminating the interference of slave station equipment to a bus signal, improving the signal quality, converting a 24V power supply in a bus standard into a 5V power supply and indicating the working state of a communication device. The device has wide universality; and when peripheral equipment meets the specification of an interface circuit in a communication interface device, the communication interface device can be interconnected with any peripheral equipment to exchange Profibus-DP data information.

The invention discloses a control system for a subway safety door, comprising: a master monitor system, a central control panel interface unit, an input service unit, a control center server and a plurality of door unit controllers, wherein the master monitor system is connected with the central control panel interface unit through a PROFIBUS bus; the master monitor system is connected with the input service unit and the control center server through a MODIBUS bus; the input service unit is connected with the central control panel interface unit through the PROFIBUS bus; the central control panel interface unit is connected with the plurality of door unit controllers through the PROFIBUS bus; and when the master monitor system have faults and cannot work normally, the input service unit is communicated with the control center server through the MODIBUS bus, so as to transmit state information of the safety door to the control center server. The system provided by the invention can improve the safety of the subway.

This invention relates to a communication adaptor for converting and matching network protocols in different bus devices including profibus-DP, drive RS485, light-couple isolation, SPC3, single-chip processor STC, light couple isolation, device RS485, device RS232, Modbus, a primary 5VDC supplier, a DC-DC supply module, a Modbus communication 5VDC supplier, a profibus-DP communication 5VDC supplier, a state indication and address design. The circuit signals are transmitted from profibus-DP via RS485 light couple isolation SPC3 and processed by STC, then via light-couple isolation, RS485, RS232 and Modbus conversion to be delivered to profibus-DP inversely. The software includes SPC3 flows primary program flow and interruption program flow.

The invention discloses a detection platform and method for Beckhoff PLC modules. The detection platform for the Beckhoff PLC modules comprises a touch displayer, an industrial personal computer, a 1# master station, a 2# slave station, a 3# slave station and a power supply unit, wherein the 1# master station comprises a profibus master station module, a basic CPU module and a power module; the 2# slave station comprises a bus terminal controller, an I/O level module which comprises a digital quantity output module, and a terminal module; the 3# slave station comprises a bus terminal coupler, an I/O level module which comprises a digital quantity input module, a digital quantity output module, an analog quantity input module and an analog quantity output module, and a terminal module; the touch displayer is connected with the industrial personal computer, the basic CPU module is connected with the industrial personal computer, the profibus master station module is connected with the bus terminal controller and the bus terminal coupler, the bus terminal controller is connected with the industrial personal computer, and all the Beckhoff PLC modules or part of the Beckhoff PLC modules can serve as Beckhoff PLC modules to be detected. According to the detection platform and method for the Beckhoff PLC modules, due to the fact that a bus system is established, performance of the Beckhoff PLC modules can be detected, and the maintenance pass rate or the ex-factory pass rate is improved.

The invention provides a multi-port control method based on the rapid PROFIBUS message identification. The method comprises the following steps: (1) electrification setting; (2) detecting the port signal level by a detecting and isolating circuit detection; (3) detecting the port PROFIBUS signal level by the detecting and isolating circuit, wherein when the signal level is converted from a release state to a transmission state, whether the port receives a message starting signal can be determined; (4) allowing the other ports to be in a transmission state by a multi-path receiving/transmitting control logic circuit, converting the received message into a transmission message signal and outputting the signal to the other ports via a driving and isolating circuit; (5) transmitting a second wave trigger signal when the conversion of the signal level from the transmission state to the release state is detected by the detecting and isolating circuit detection; (6) determining the completion of the message transmission by determining the last time of the second wave trigger signal with the multi-path receiving/transmitting control logic circuit, and closing the other ports; and (7) returning to the step (2). By adopting the method, the message resolution and the baud rate test can be obviated, therefore, the method is a rapid and baud rate-self-adaptive message data flow judgment method.