CN204406186U - A kind of fieldbus controller - Google Patents

Abstract

A kind of fieldbus controller, this controller comprise be connected two Ethernet interface DM9000A, logic controller XC9536,16 BITBUS network transceiver ALVC16245, dual port RAM, X5045EEPROM storer, RM9200 processor, 32M flash memory, 128M SDRAM storer, CAN DC/DC isolated from power, optical coupling isolator A, optical coupling isolator B, half-duplex differential transceiver, 2 tunnel CAN controller SJA1000T, CAN transceiver 82C250,5V system power supply, 485 communication DC/DC isolated from power, plate level universal serial bus and dual port RAM bus interface; The utility model fieldbus controller is easy to produce and implement, and control function block is abundant, system realizes simply, reliability is high.

Description

A field bus controller

technical field

The utility model relates to the field bus control technology field of power plants, in particular to a field bus controller.

Background technique

Fieldbus Control System (FCS for short) is a real-time control communication network that interconnects the lowest level of automation field controllers and field intelligent instrumentation equipment. It follows all or part of the communication of the ISO OSI open system interconnection reference model. Protocol, which can realize two-way serial multi-node digital communication. FCS is a fully decentralized, fully digital, fully open and interoperable new-generation production process automatic control device. It is a real-time network control system that interconnects the lowest level of automation field controllers and field intelligent instrumentation equipment. FCS is composed of multi-segment fieldbus, various intelligent field instruments (including flow, pressure, temperature, actuators and auxiliary units, etc.), man-machine interface (industrial PC), configuration software, monitoring software and network software. Currently more popular field bus mainly includes: CAN, PROFIBUS, FF, HART and so on. The network nodes in FCS can independently control the field devices and exchange field control information and management information with the control station, which is extremely convenient for the control station to monitor and manage the field devices in real time, and the control functions are completely distributed to the field devices, greatly improving the reliability of the system sex, maintainability.

The power plant automatic control system is currently undergoing an upgrade from traditional DCS to FCS. The application of domestic power plant fieldbus control systems mainly adopts systems from foreign companies such as Emerson, Siemens, and ABB. The technical details and implementation of each system are important to users and power plant technicians is not open. The controllers and IO cards provided by various manufacturers are highly coupled, and the communication interface provided to the outside is single. The technology and composition of the controller are kept secret from the user. If the components of the on-site controller are damaged, the entire card needs to be replaced. The structure and functions of the controller cannot fully meet the various needs of domestic power plants; moreover, various engineering and technical problems often occur in the daily operation and maintenance process, and the solution of these problems requires technical services and support provided by the control system manufacturer , which will generate very high costs and increase the operating cost of the power plant. The development of a domestic fieldbus control system has become the primary task of domestic electric power research institutes.

The main limitations of the existing technology are:

(1) The purchase cost of foreign fieldbus controllers is high, and the technology is closed. It is difficult for ordinary thermal engineers and technicians in power plants to deal with daily engineering and technical problems.

(2) The field bus controller is monopolized by foreign system suppliers, and the use of foreign field bus control systems will generate huge additional service, training and technical support costs, resulting in unnecessary expenses for the power plant in the later stage.

(3) At present, each fieldbus controller has its own technology system, and there are few standard interfaces provided to the outside, or the external interfaces are not disclosed, which is very difficult for the expansion of the system.

(4) The online modification and downloading of the existing controllers is inefficient, time-consuming, and poor in security. Generally, the system does not support the online configuration downloading function.

(5) The operation of controller control configuration and system database configuration is complicated, and the man-machine interface and operating habits are not friendly. Since the control systems are all foreign systems, English interfaces are mostly used, resulting in domestic power plant thermal and engineering personnel operating and Inconvenient to use.

(6) The control algorithm and function blocks provided by the controller are not perfect, and cannot fully meet the requirements of complex control and energy-saving optimization of domestic power plants. In order to realize a certain function, complex configuration work is often required to realize it.

Contents of the invention

In order to solve the above-mentioned problems in the prior art, the purpose of this utility model is to provide a field bus controller and method, which is easy to produce and implement, rich in control function blocks, simple in system implementation and high in reliability.

In order to achieve the above object, the utility model adopts the following technical solutions:

A field bus controller (FCP01 for short), including two redundant Ethernet interfaces DM9000A provided to the outside, RM9200 connected to the Ethernet interface DM9000A through a bidirectional data bus, and the data pins SD0 to SD15 of the Ethernet interface DM9000A respectively Connect with the data pins D0 to D15 of RM9200, among which SD0 is connected with D0, SD1 is connected with D1, and so on, SD15 is connected with D15; the CS# pin of the Ethernet interface DM9000A is connected with the NCS3 pin of RM9200, and the RESET of the Ethernet interface DM9000A The pin is connected to PA25 of RM9200, the INT pin of Ethernet interface DM9000A is connected to PA23 of RM9200, and the CMD pin of Ethernet interface DM9000A is connected to A2 pin of RM9200;

It also includes dual-port RAM, two-way CAN bus controller SJA1000T, logic controller XC9536, and a 16-bit bus transceiver located between dual-port RAM, CAN bus controller SJA1000T and RM9200, and pins 1A1 to 16 of the bus transceiver 1A8, 2A1 to 2A8 are respectively connected to the data pins D0 to D15 of RM9200, and the pins 1B1 to 1B8, 2B1 to 2B8 of the 16-bit bus transceiver are respectively connected to the data pins D0 to D15 of the dual-port RAM, among which 1B1 is connected to D0 and 1B2 Connect D2, and connect 2B8 to D15 in this order. The CAN controller SJA1000T is connected to 1B1 to 1B8 of the 16-bit bus transceiver through pins D0 to D7 in turn, and the pins D0 to D7 at the right end of the dual-port RAM are connected to the bottom plate plug in turn through the bus interface. The positions from LD0 to LD7 corresponding to the slot provide a bus interface that can be read and written to the outside; the clock pin SCK, data lines MOSI and MISO of the CAN bus controller SJA1000T are respectively connected to the clock line SCK and data line MOSI in the RM9200 serial bus Connected to MISO, the pins TCK1, TDO1, TDI1 and TMS1 of RM9200 are respectively connected to the pins 11, 24, 9 and 10 of the logic controller XC9536, and the pins DTREQ and DTREQ0 of the logic controller XC9536 are respectively connected to the 16-bit bus for transceiver The enable pin EN of the device and the CANE pin of the CAN bus controller;

It also includes the X5045EEPROM memory, the RESET pin of the X5045EEPROM memory is connected to the 115 pin of RM9200 through the RESET line, the X5045EEPROM memory and RM9200 are connected through the SPI serial bus, the corresponding clock line SCK and data line MOSI of the SPI serial bus between the X5045EEPROM memory and RM9200 It is connected to the pin with the same name as MISO;

It also includes 32M flash memory FLASH, 24 address pins A1 to A24 of 32M flash memory FLASH are respectively connected to address pins A1 to A24 of RM9200, and 32M flash memory FLASH is sequentially connected to 16 bits of RM9200 through 16 data pins D0 to D15 Data line D0 to D15, pin 166 of RM9200 is connected to chip select signal line CS of 32M flash memory FLASH;

It also includes 128M SDRAM memory, 128M SDRAM memory is respectively connected to the address bus A0 to A25 of RM9200 through 26 address lines A0 to A25, and 16 data lines D0 to D15 of the 128M SDRAM memory are respectively connected to the 16-bit data line of RM9200 data line From D0 to D15, the chip selection signal SDCS of 128MSDRAM memory is connected to the chip selection signal line CS of RM9200;

It also includes optocoupler isolator A, optocoupler isolator B and half-duplex differential transceiver. The pins TXD0, TXD0 and CTS0 of RM9200 respectively communicate with the optical The coupling isolator A is connected to the optocoupler isolator B, and the optocoupler isolator A and optocoupler isolator B are respectively connected to the half-duplex differential transceiver through the transmission signal line and the receiving signal line. 485- is connected to the positive and negative signal lines 485+ and 485- of 485 communication;

The two-way CAN bus controller SJA1000T is connected upwardly with the data line and address line of RM9200 through the data line and address line; the two-way CAN bus controller SJA1000T is connected downwardly to the optocoupler C and optocoupler respectively through pins CAN+ and CAN- D, Two optocouplers C and D are connected to the CAN transceiver 82C250 through TxD and RxD respectively, and the ground wires of the two CAN transceivers 82C250 are respectively separated from the right end ground of the DC/DC power supply to isolate the ground wire of the field bus controller and The external CAN bus ground wire, the two CAN transceivers 82C250 are directly connected to the CAN+ and CAN- differential mode signals of the chassis slot through pins D0 and D1 respectively, and then connected to the I/O module through the CAN bus.

Using 5V system power supply, CAN transceiver 82C250, optocoupler isolator A and optocoupler isolator B provide 5V DC power supply through DC/DC power isolation, CAN bus power isolation left end ground wire GND, right end connected to CAN bus ground wire CGND , 485 communication power isolation left terminal is connected to 485 communication ground 485GND1, and the right terminal is connected to field bus controller ground wire GND.

The 32M flash memory FLASH adopts the mode of using two chips together, and the capacity of a single chip is 16M×16, forming a 32M storage capacity.

Described 128M SDRAM memory adopts the mode that two slices are used together, and single chip capacity is 32M * 16, constitutes the storage space of 128M * 8 bits.

Described field bus controller represents module operation status by the red/green LED indicator lamp on the panel, indicator lamp comprises 8 altogether, and the name of each indicator lamp is operation/fault lamp (abbreviated as RUN), master/slave LED (M/S), network port 1 status (HSE1), network port 2 status (HSE2), 4 controller fault status lights (LED1~LED4); among them, the running/fault lights have two colors: red and green, red Indicates abnormal operation, green indicates normal, green master/slave light indicates master card, yellow indicates standby card, network port 1 status and network port 2 status flash to indicate whether the two network ports are connected; controller fault status light The 4 status lights give 15 working states of the controller according to the 8421 code from top to bottom, including: FLASH failure, SDRAM failure, dual-port RAM failure, CAN1 failure, CAN2 failure, network port A failure, network port B Fault, network port A works, network port B works, I/O type mismatch, I/O communication timeout, GPS synchronization timeout, FTP connection failure, no configuration file and reserved bits.

The control method of the above-mentioned field bus controller, CAN bus data interaction, external I/O modules with various functions communicate through two redundant CAN bus interfaces, and the input data of the I/O modules are sent to the CAN bus , the field bus controller receives the data from the CAN bus through the CAN bus transceiver 82C250, and then through the optocoupler C or optocoupler D, the data enters the CAN bus controller SJA1000T, and the CAN bus controller SJA1000T receives the input of the I/O module The data is sent to the 16-bit bus transceiver through the data bus, and then the RM9200 is notified to receive the data through the interrupt signal line INT, and the data of the external I/O module is input to the field bus controller; during the process of sending CAN data packets, the RM9200 generates CAN data packet, the generated CAN data packet is first sent to the 16-bit bus transceiver for queuing and waiting to be sent. The CAN bus controller SJA1000T judges the working status of the CAN bus. The CAN data packet is read in, and then the CAN data packet is sent to the CAN bus, and the external I/O module selects and accepts its own CAN data packet according to the address information of the data.

485 communication data interaction, when external 485 data is input to the field bus controller, the external 485 data is first sent to the 485 bus, received by the half-duplex differential transceiver, passed through the optocoupler isolator A or optocoupler isolator B through the serial The line bus RxD is sent to the RM9200 serial port input; after the data is received, the RM9200 is notified by the interrupt signal for processing. When the field bus controller needs to output 485 data to the external 485 module, it only needs to send the data to the 485 bus. The software will automatically read 485 data from the 485 bus. When the field bus controller sends data to the 485 bus, it first checks whether the 485 bus is in the ready state. The duplex differential transceiver then sends the enable signal EN485 to notify the half-duplex differential transceiver to write data into the 485 bus.

The fieldbus controller communicates with the PROFIBUS communication card FPB01 or FPB02 through the bus interface of the dual-port RAM; the data communication of the dual-port RAM is bidirectional. When the fieldbus controller needs to write data into the PROFIBUS communication card, first write After the data is written into the 16-bit bus transceiver, then the data is sent from the 16-bit bus transceiver to the right port of the dual-port RAM of the PROFIBUS communication card, and then an interrupt signal is sent through the bus interface to notify the PROFIUBS communication card that there is a new Data writing; when the external PROFIUBS communication card or third-party card has data that needs to be sent to the fieldbus controller through the dual-port RAM, the data is written to the right port of the fieldbus controller dual-port RAM through the bus interface, and then an interrupt signal is sent to notify The field bus controller reads the data. After the field bus controller receives the interrupt signal, it reads the data from the left port of the DPRAM to the 16-bit bus transceiver, and then reads the data from the 16-bit bus transceiver to RM9200; the field bus control The external Ethernet interface provided by the device, the external engineer station, operator station, and history station communicate with the fieldbus controller through the Ethernet interface DM9000A; when the external data is written into the fieldbus controller, the data is transmitted through the Ethernet PHY input to the Ethernet interface DM9000A, when the data arrives, the RM9200 is notified to process the data through the interrupt signal; when the data needs to be sent to the external engineer station and operator station through the Ethernet, the RM9200 first prepares the data, and when the data is ready , Send data to Ethernet through Ethernet PHY.

The field bus controller implements an external watchdog through the X5045EEPROM memory, and the RM9200 resets the X5045EEPROM memory regularly through the control line CT. If the watchdog is not reset within the set time, the X5045EEPROM memory will reset the RM9200 through the signal line RESET.

The above RM9200 can detect the status of the connected components including Ethernet interface DM9000A, 32M flash memory FLASH, 128M SDRAM memory, two-way CAN bus controller SJA1000T, 485 communication and dual-port RAM. If serious errors and fault information are detected , and this error and fault information has endangered the normal and safe operation of the fieldbus controller, the main fieldbus controller will automatically restart and switch to the standby fieldbus controller to run, effectively protecting the safety of the plant’s on-site operating equipment and units; RM9200 The detection results of each component connected to it will be displayed through the controller fault status light on the front panel; the RM9200 collects and processes the data of each component connected to it at a cycle of 10ms or a multiple of 10ms , can process 5 cycles of data at the same time; when the fieldbus controller is initially powered on, RM9200 first reads the instructions and data in the 32M flash memory FLASH into the 128M SDRAM memory, and then RM9200 reads the instructions and data in the 128M SDRAM memory one by one Perform parsing and execution, and then RM9200 sends a broadcast request to the CAN bus through CAN bus controller SJA1000T, optocoupler C, optocoupler D and CAN transceiver 82C250. After the request is sent, RM9200 will listen to the CAN bus, and then receive the CAN bus In response to the data, all the cards connected to the CAN bus are connected to the field bus controller; then the field bus controller performs normal data interaction and command interaction with the external cards through the CAN bus.

For the initial download, the engineer station will send the configuration and data information to the Ethernet interface DM9000A, and the RM9200 will write the configuration and data information from the Ethernet interface DM9000A to the 32M flash memory FLASH, and the RM9200 will verify the correctness and integrity of the data. The data that has passed the correctness and integrity verification is written into the 32M flash memory FLASH, otherwise, the data will be discarded, and the wrong data and configuration information feedback signal will be sent to the outside through the Ethernet interface DM9000A; only after the initial download is completed correctly , RM9200 reads the data in the 32M flash memory FLASH into the 16-bit bus transceiver, and then analyzes and executes the data and instruction information read in the 16-bit bus transceiver.

After completing the initial download, the master fieldbus controller will send the configuration and data information in the 32M flash memory FLASH to the standby fieldbus controller through the 16-bit bus transceiver, dual-port RAM and bus interface, and establish a master-standby redundant site bus controller. The main and standby fieldbus controllers back up data and status information through DPRAM at a cycle of 500ms, and the two fieldbus controllers distinguish between active and standby through panel lights.

The main and standby fieldbus controllers synchronize data through the parallel bus on the backplane. When the main fieldbus controller fails and restarts, it can realize non-disruptive switching, and the two fieldbus controllers can realize the main and standby redundancy mechanism. The master-standby redundancy is realized through the bus connection of the bottom board slot, the master fieldbus controller writes to the standby fieldbus controller, and the RM9200 of the master fieldbus controller writes data to the right port of the dual-port RAM of the standby fieldbus controller through the bus interface. Firstly lock, if the lock is successful, write the data to the dual-port RAM, if the lock fails, it means that the dual-port RAM is occupied, the RM9200 of the main fieldbus controller waits and re-locks, after the lock is successful, it starts from the 16-bit The bus transceiver writes the data into the I/0 data area of the dual-port RAM, and writes the data in a single-byte cycle to ensure that the data length of the dual-port RAM written at one time is consistent. When the 16-bit bus transceiver After the data written into the dual-port RAM is completed, re-read the data in the dual-port RAM and check the data to ensure the correctness of the written data. Then the dual-port RAM is unlocked, and after the unlocking is completed, the use of the dual-port RAM is fully released to ensure that the dual-port RAM is not occupied for a long time and cannot be released.

The main fieldbus controller reads data from the left port of the dual-port RAM. The process of reading data is similar to the process of writing. First, lock it. If the lock fails, it means that the current dual-port RAM is being occupied. If the lock is successful, the lock is successful. Then start to read the data from the I/0 data area of the dual-port RAM to the 16-bit bus transceiver, and the data is read once to ensure that the read operation is completed within one cycle. After the read operation is completed, the dual-port RAM needs to be unlocked and released.

Compared with the prior art, the utility model has the following advantages:

(1) The field bus controller FCP01 of the utility model realizes the controller of the field control system of the thermal power plant, which makes the traditional DCS system and the field bus system combined together, and communicates with the field bus master station through FCP01, or conventional AI, DI , AO, DO card communication to realize the seamless integration of DCS control system and fieldbus control system.

(2) The FCP01 hardware adopts a master-standby redundancy design. Two FCP01 cards form a master station, which is mutually redundant. The fault detection mechanism can realize automatic fault switching to ensure the safe and reliable operation of the control system.

(3) FCP01 provides 2 redundant CAN bus interfaces to the outside, supports the expansion of standard CAN bus, and the 2 redundant CAN bus interfaces can automatically realize failover, which improves the reliability and safety of FCP01.

(4) FCP01 provides two mutually redundant Ethernet interfaces to the outside, and supports the operation of the controller through Ethernet. At the same time, the two Ethernet interfaces are mutually redundant, which improves the reliability and security of the system.

(5) FCP01 provides field bus interface, supports the access of PROFIBUS and FF bus system.

(6) FCP01 provides a dual-port RAM interface, which supports the interaction of irregular data and custom data through the dual-port RAM interface.

(7) FCP01 provides a standard 485 interface to the outside, and supports the communication of standard 485 signal sources.

(8) FCP01 provides a wealth of standard interfaces and custom interfaces to the outside, expanding the application range of FCP01 in power plants and third-party systems.

(9) FCP01 adopts advanced fault detection and fault recovery mechanism, which can detect and recover the operating state of FCP01 in real time, and provide various states and stages of control operation to the outside through the LED lights on the FCP01 panel.

Description of drawings

Fig. 1 is the structural diagram of the utility model controller.

Fig. 2 is the engineering deployment diagram of the controller of the utility model.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail.

As shown in Figure 1, a field bus controller of the present invention includes two redundant Ethernet interfaces DM9000A provided to the outside, RM9200 connected to the Ethernet interface DM9000A through a bidirectional data bus, and the data guide of the Ethernet interface DM9000A The pins SD0 to SD15 are respectively connected to the data pins D0 to D15 of the RM9200, among which SD0 is connected to D0, SD1 is connected to D1, and so on, and SD15 is connected to D15; the CS# pin of the Ethernet interface DM9000A is connected to the NCS3 pin of the RM9200. The RESET pin of network interface DM9000A is connected with PA25 of RM9200, the INT pin of Ethernet interface DM9000A is connected with PA23 of RM9200, the CMD pin of Ethernet interface DM9000A is connected with A2 pin of RM9200; also includes dual-port RAM , two-way CAN bus controller SJA1000T, logic controller XC9536, and a 16-bit bus transceiver located between dual-port RAM, CAN bus controller SJA1000T and RM9200, pins 1A1 to 1A8, 2A1 to 2A8 of the 16-bit bus transceiver Connect the data pins D0 to D15 of RM9200 respectively, and the pins 1B1 to 1B8, 2B1 to 2B8 of the 16-bit bus transceiver ALVC16245 are respectively connected to the data pins D0 to D15 of the dual-port RAM, among which 1B1 is connected to D0, 1B2 is connected to D2, according to In this sequence, 2B8 is connected to D15, the CAN controller SJA1000T is sequentially connected to 1B1 to 1B8 of the 16-bit bus transceiver through pins D0 to D7, and the right end pins D0 to D7 of the dual-port RAM are sequentially connected to LD0 corresponding to the bottom plate slot through the bus interface To the LD7 position, provide a bus interface that can be read and written to the outside; the clock pin SCK, data lines MOSI and MISO of the CAN bus controller SJA1000T are respectively connected to the clock line SCK, data lines MOSI and MISO in the RM9200 serial bus, The pins TCK1, TDO1, TDI1 and TMS1 of RM9200 are respectively connected to pins 11, 24, 9 and 10 of the logic controller XC9536, and the pins DTREQ and DTREQ0 of the logic controller XC9536 are respectively connected to the 16-bit bus transceiver enable Pin EN and CAN bus controller CANE pin; also includes X5045EEPROM memory, RESET pin of X5045EEPROM memory is connected to 115 pin of RM9200 through RESET line, X5045EEPROM memory and RM9200 are connected through SPI serial bus, X5045EEPROM memory and RM9200 The clock line SCK corresponding to the SPI serial bus, the data line MOSI and the MISO pin with the same name are connected; it also includes 32M flash memory FLASH, 24 address pins A1 to 32M flash memory FLASH A24 is respectively connected to 24 address pins A1 to A24 of RM9200, and 32M flash memory FLASH is connected to 16-bit data lines D0 to D15 of RM9200 through 16 data pins D0 to D15 in turn, and pin 166 of RM9200 is connected to 32M flash memory FLASH The chip select signal line CS; also includes 128MSDRAM memory, 128M SDRAM memory is respectively connected to the address bus A0 to A25 of RM9200 through 26 address lines A0 to A25, and 16 data lines D0 to D15 of 128M SDRAM memory are respectively connected to RM9200 The 16-bit data lines D0 to D15, the chip select signal SDCS of 128M SDRAM memory are connected to the chip select signal line CS of RM9200; it also includes optocoupler isolator A, optocoupler isolator B and half-duplex differential transceiver, and the lead of RM9200 The pins TXD0, TXD0 and CTS0 are respectively connected to optocoupler isolator A and optocoupler isolator B through transmission signal line TXD, receiving signal line RXD and enable signal line EN485, and optocoupler isolator A and optocoupler isolator B are respectively connected through transmission The signal line and the receiving signal line are connected to the half-duplex differential transceiver, and the half-duplex differential transceiver is connected to the positive and negative signal lines 485+ and 485- of the 485 communication through pins 485+ and 485-; two-way CAN bus controller SJA1000T Up through the data line and address line and the data line and address line of RM9200 are connected to each other; the two CAN bus controllers SJA1000T are connected downward through pins CAN+ and CAN- to optocoupler C and optocoupler D respectively, and two optocoupler C and the optocoupler D are connected to the CAN transceiver 82C250 through TxD and RxD respectively, and the ground wires of the two CAN transceivers 82C250 pass through the right end ground of the DC/DC power supply isolation to isolate the ground wire of the field bus controller and the ground wire of the external CAN bus. The CAN transceiver 82C250 is directly connected to the CAN+ and CAN- differential mode signals of the base slot through the pins D0 and D1, and then connected to the I/O module through the CAN bus.

FCP01 is inserted into the chassis and connected to the access-level switch through Ethernet. It is recommended to configure two FCP01s for one control station to realize active and standby controller redundancy. The initial power-on of FCP01 requires initial configuration. According to the Ethernet IP address specified by the design, the configuration file is generated by the engineering station. The configuration file gives the IP address of the controller in detail, the information of the time synchronization server, etc., and the configuration file is generated by the engineering station. Finally, download the configuration file to FCP01 via Ethernet through the initial default IP address 192.168.0.49; after the configuration file is downloaded, you need to restart FCP01, and the new configuration will take effect after restarting, and the IP address of FCP01 will automatically change into the IP address given in the new configuration file. The main and standby FCP01s are configured with independent Ethernet addresses, and the address of the standby card is generated based on the IP address of the main card. For example, if the address of the main card is configured as 192.168.1.2, then the IP address of the standby card is 192.168.1.52. The restart of FCP01 can be restarted by soft restart and hardware RESET button. Every time you change the Ethernet address of FCP01, you need to restart to take effect.

Establish the control system as shown in Figure 2. The control system includes the following parts: operator station, engineer station, FCP01, FPB01, I/O modules, DB37 cables, terminal boards, field devices and instruments from various manufacturers, etc. . The operator station and the engineer station establish TCP and UDP connections with FCP01 through Ethernet, and the engineer station through Ethernet can complete the interaction with FCP01, such as downloading configuration information and sending online commands; Various control requirements establish a database, control configuration and other information, compile the program on the upper computer of the engineer station, generate a database file, download the control configuration file to FCP01, FCP01 analyzes the database file and control configuration file, and performs initialization configuration and The start of computing tasks includes the reading and configuration of card information, the establishment of I/O point data structures and address allocation, the configuration of computing cycles, the starting of computing tasks, and the broadcasting of inter-station reference points.

FCP01 provides CAN interface, which can be freely connected to I/O modules through CAN bus. I/O modules can be configured with AI, AO, DI, DO and field bus module FPB01. FCP01 communicates with I/O modules through CAN bus, with high communication rate and flexible message structure. FCP01 can provide 5 expansion chassis, and each chassis can insert 12 cards. The I/O module is connected to the terminal board of the corresponding module through the DB37 prefabricated cable, and the terminal board is directly connected to the measurement signal of the field device through hard wiring. For the PROFIBUS FPB01 module, there is no need to connect to the terminal board, it only needs to directly connect to the DP cable from the backplane, and then directly connect the DP device to the DP cable. For DP device parameters, the configuration and splitting of point information is completed through the communication master station FPB01.

Power supply system, the power supply of FCP01 is completed through the backplane, the external DC power supply provides +5VIN power to the power supply part of FCP01, and at the same time, after the transformation of the power supply part, +3.3 is used for RM9200, FLASH, SDRAM, BUFFER logic controller XC9536, dual-port RAM And Ethernet physical interface chip; +1.8 is mainly used in the core part of RM9200, the purpose is to reduce power consumption.

The engineer station establishes a database according to the design requirements of the control system, point tables, etc., and establishes configuration information through the database. After completing the configuration work, the engineer station downloads these data to the Ethernet through the Ethernet. A controller with an explicit IP address. After receiving the database configuration and SAMA configuration information, FCP01 analyzes the information, first establishes the I/O point database, module configuration information, and then reads and analyzes the SAMA configuration information, SAMA configuration information Consistent with the database configuration, it is the first to insert part, delete part and add part. Then the control needs to configure the modules connected to the FCP01CAN bus interface according to the database configuration, including the broadcast data period of the module, the slot number of the module, the index number, etc. The I/O module is connected to the corresponding terminal board, and then the I/O module is directly connected to the control signal and diagnostic signal of the field device through hard wiring.

Claims (5)

1. a fieldbus controller, it is characterized in that: two the Redundant Ethernet interface DM9000A externally provided are provided, the RM9200 be connected by BDB Bi-directional Data Bus with Ethernet interface DM9000A, data pin SD0 to the SD15 of Ethernet interface DM9000A is connected with data pin D0 to the D15 of RM9200 respectively, wherein SD0 connects D0, SD1 connects D1, the like, SD15 connects D15; The CS# pin of Ethernet interface DM9000A is connected with the NCS3 pin of RM9200, the RESET pin of Ethernet interface DM9000A is connected with the PA25 of RM9200, the INT pin of Ethernet interface DM9000A is connected with the PA23 of RM9200, and the CMD pin of Ethernet interface DM9000A is connected with the A2 pin of RM9200;

Also comprise dual port RAM, two-way CAN SJA1000Controler T, logic controller XC9536 and be positioned at dual port RAM, 16 BITBUS network transceivers between CAN SJA1000Controler T and RM9200, pin 1A1 to the 1A8 of 16 BITBUS network transceivers, 2A1 to 2A8 connects data pin D0 to the D15 of RM9200 respectively, pin 1B1 to the 1B8 of 16 BITBUS network transceivers, 2B1 to 2B8 connects data pin D0 to the D15 of dual port RAM respectively, wherein 1B1 connects D0, 1B2 connects D2, order 2B8 connects D15 according to this, CAN controller SJA1000T accesses 1B1 to the 1B8 of 16 BITBUS network transceivers successively by pin D0 to D7, dual port RAM right-hand member pin D0 to D7 is connected to LD0 to LD7 position corresponding to negative slot successively by bus interface, the bus interface of read-write operation is externally provided, the clock pins SCK of CAN SJA1000Controler T, data line MOSI with MISO is connected with the clock line SCK in RM9200 universal serial bus, data line MOSI with MISO respectively, pin TCK1, TDO1, TDI1 of RM9200 are connected with 10 with the pin one 1,24,9 of TMS1 difference andlogic control device XC9536, and pin DTREQ and DTREQ0 of logic controller XC9536 accesses the enable pin EN of 16 BITBUS network transceivers and the CANE pin of CAN controller respectively,

Also comprise X5045EEPROM storer, the RESET pin of X5045EEPROM storer connects 115 pins of RM9200 by RESET line, X5045EEPROM storer is connected by SPI universal serial bus with RM9200, and the clock line SCK that X5045EEPROM storer is corresponding with the SPI universal serial bus of RM9200, data line MOSI with MISO are of the same name, and pin is connected;

Also comprise 32M flash memory FLASH, 24 address pin A1 to A24 of 32M flash memory FLASH access address pin A1 to the A24 of RM9200 respectively, and 32M flash memory FLASH accesses 16 position datawire D0 to the D15 of RM9200 successively by 16 data pin D0 to D15, the pin one 66 of RM9200 connects the chip selection signal line CS of 32M flash memory FLASH;

Also comprise 128M SDRAM storer, 128M SDRAM storer accesses address bus A0 to the A25 of RM9200 respectively by 26 address wire A0 to A25,16 data line D0 to D15 of 128M SDRAM storer access data line D0 to the D15 of RM9200 respectively, and the chip selection signal SDCS of 128M SDRAM storer accesses the chip selection signal line CS of RM9200;

Also comprise optical coupling isolator A, optical coupling isolator B and half-duplex differential transceiver, the pin TXD0 of RM9200, TXD0 and CTS0 is respectively by transmission signal line TXD, Received signal strength line RXD is connected with optical coupling isolator A and optical coupling isolator B respectively with enable signal line EN485, optical coupling isolator A is connected half-duplex differential transceiver with optical coupling isolator B respectively by transmission signal line and Received signal strength line, half-duplex differential transceiver accesses positive and negative signal wire 485+, the 485-of 485 communications by pin 485+ and 485-;

Two-way CAN SJA1000Controler T is upwards interconnected by the data line of data line and address wire and RM9200 and address wire; Two-way CAN SJA1000Controler T is downwards all by pin CAN+, CAN-is connected respectively to optocoupler C and optocoupler D, optocoupler C and optocoupler D is connected to CAN transceiver 82C250 respectively by TxD and RxD, the ground wire of two-way CAN transceiver 82C250 is respectively by the right-hand member ground of DC/DC isolated from power, isolation fieldbus controller ground wire and outside CAN ground wire, two-way CAN transceiver 82C250 directly accesses CAN+ and the CAN-difference mode signal of negative slot respectively by pin D0 and D1, be then connected to I/O module by CAN.

2. a kind of fieldbus controller according to claim 1, it is characterized in that: adopt 5V system power supply to power, the power supply of CAN transceiver 82C250, optical coupling isolator A and optical coupling isolator B provides 5V direct current supply by DC/DC isolated from power, CAN isolated from power left end ground wire GND, right-hand member meets CAN ground wire CGND, 485 communication power supplies isolation left ends meet 485 communicatively 485GND1, and right-hand member meets fieldbus controller ground wire GND.

3. a kind of fieldbus controller according to claim 1, is characterized in that: described 32M flash memory FLASH adopt two panels and mode, monolithic capacity is 16M × 16, forms 32M memory capacity.

4. a kind of fieldbus controller according to claim 1, is characterized in that: described 128M SDRAM storer adopt two panels and mode, monolithic capacity is 32M × 16, forms the storage space of 128M × 8.

5. a kind of fieldbus controller according to claim 1, it is characterized in that: described fieldbus controller represents module running status by red/green LED light on panel, pilot lamp comprises 8 altogether, the name of each pilot lamp is called operation/trouble light, master/slave lamp, network interface 1 state, network interface 2 state, controller failure status lamp 4; Wherein operation/trouble light has red and green two kinds of colors, red expression operation exception, green expression is normal, and the expression of master/slave lamp green is main card, yellow expression is standby card, and whether network interface 1 state and network interface 2 state are in connection status by flicker expression two network interfaces; These 4 status lamps of controller failure status lamp give 15 kinds of duties of controller according to 8421 codings from top to bottom, comprising: FLASH fault, SDRAM fault, dual port RAM fault, CAN1 fault, CAN2 fault, network interface A fault, network interface B fault, network interface A work, network interface B work, I/O type mismatch, I/O communication overtime, GPS Synchronization timeout, FTP connection failure, without configuration file and reservation position.