CN101753486B - Industrial automation field bus gateway equipment - Google Patents

Abstract

The invention relates to industrial automation field bus gateway equipment. The industrial automation field bus gateway equipment comprises a master controller module, a PROFIBUS DP interface module and an FF H1 interface module, wherein the master controller module manages a field bus gateway by operating field bus gateway management software, realizes reception and transmission control over a PROFIBUS DP message by operating PROFIBUS DP field bus communication software and realizes the reception and transmission control over an FF H1 message by operating FF H1 field bus communication software; the PROFIBUS DP interface module takes the charge of receiving, transmitting and checking the PROFIBUS DP message and realizes a physical connection with the master controller module through a data bus, an address bus and a control signal wire; and the FF H1 interface module realizes the physical connection with the master controller module through the data bus, the address bus and the control signal wire. The industrial automation field bus gateway equipment can realize a seamless connection between a PROFIBUS DP field bus and an FF H1 field bus and realize data exchange between two pieces of network equipment.

Description

An industrial automation fieldbus gateway device

technical field

The invention relates to the field of automatic control, in particular to an industrial automation field bus gateway device.

Background technique

In the factory automation control system, the coexistence of multiple fieldbus technologies reduces the flexibility of the system and brings inconvenience to system integrators and users. System integrators and users must understand the details of different types of fieldbus technologies and different operating modes , this problem has become an obstacle to the promotion of fieldbus technology. On the one hand, it is necessary to solve the problem of integrating different types of fieldbus technologies into a whole; type of fieldbus gateway device. However, there is no field bus gateway device that can meet the above requirements.

Contents of the invention

Aiming at the above-mentioned deficiencies existing in the prior art, the technical problem to be solved by the present invention is to provide a kind of industrial automation field bus gateway equipment that can realize seamless connection between PROFIBUS DP bus and FF H1 bus.

In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:

A kind of industrial automation field bus gateway device of the present invention comprises: master controller module, implements management to field bus gateway by running field bus gateway management software, realizes the receiving and sending control of PROFIBUS DP message by running PROFIBUSDP field bus communication software, through Run FFH1 field bus communication software to realize the control of receiving and sending FF H1 messages; PROFIBUS DP interface module is responsible for receiving, sending and verifying PROFIBUD DP messages based on high-speed RS485, through data bus, address bus and several control signals The physical connection with the main controller module is realized through the line; the FF H1 interface module is responsible for receiving, sending and verifying the FF H1 message, and realizes the physical connection with the main controller module through the data bus, address bus and control signal line.

The main controller module is composed of a microcontroller and a storage part, with the microcontroller as the control core, and the storage part is composed of a random access memory and a flash memory, which are respectively connected to the microcontroller; wherein the flash memory stores a fieldbus gateway management program, PROFIBUS DP and FF H1 fieldbus communication program.

The PROFIBUS DP interface module is composed of the first communication controller and the first MAU module, wherein the first communication controller receives the data of the main controller module, sends it to the PROFIBUS DP bus through the first MAU module, or receives the data uploaded by the first MAU module Then send the main controller module; the first MAU module sends messages to the PROFIBUS DP bus or receives messages from the PROFIBUS DP bus under the control of the first communication controller.

The FF H1 interface module is composed of a second communication controller and a second MAU module conforming to the field bus IEC 61158 international standard, wherein the second communication controller receives the data of the main controller module and sends it to the FF H1 bus through the second MAU module, Or receive the data uploaded by the 2nd MAU module and send it to the main controller module; the 2nd MAU module sends a message to the FF H1 bus or receives a message from the FF H1 bus under the control of the 1st communication controller.

The present invention is used to complete the information exchange and interoperability functions between the PROFIBUS DP bus and the FF H1 bus in the field of factory automation, and has the following advantages:

1. Strong adaptability. The invention can realize the seamless connection between the PROFIBUS DP field bus and the FF H1 field bus, and realize the data exchange between the two network devices.

2. It has the openness of the system. Since the communication protocol followed by the present invention is consistent and open, information exchange can be realized between devices of different manufacturers, and an open interconnection system in the field of automation can be constructed through this product.

3. Wide application. The present invention can be applied to the automatic control fields of industries such as chemical industry, petrochemical industry, pharmacy, metallurgy, mining, electric power, food processing, energy, numerical control system and the like.

4. Low cost. The present invention can introduce a new field bus system on the basis of fully utilizing the original system resources, thereby greatly reducing the system cost.

Description of drawings

Fig. 1 is a hardware block diagram of the present invention;

Fig. 2 is the functional block diagram of the software structure that the present invention uses;

Fig. 3 is a block diagram of FF H1 fieldbus communication protocol stack program structure among the present invention;

Fig. 4 is PROFIBUS DP field bus communication protocol stack program block diagram among the present invention;

Fig. 5 is a block diagram of the management program of the field bus gateway of the present invention.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings.

As shown in Fig. 1, the present invention comprises main controller module, PROFIBUS DP interface module and FF H1 interface module three parts (FF: FOUNDATION FILEDBUS), wherein main controller module implements to the fieldbus gateway by running fieldbus gateway management software Management, by running PROFIBUS DP field bus communication software to realize the control of receiving and sending PROFIBUS DP messages, and by running FF H1 field bus communication software to realize the control of receiving and sending FF H1 messages; PROFIBUS DP interface module is responsible for the high-speed RS485-based The reception, transmission and verification of PROFIBUD DP messages are realized through the data bus, address bus and several control signal lines to realize the physical connection with the main controller module; the FF H1 interface module is responsible for the reception, transmission and verification of FF H1 messages. To test the work, the physical connection with the main controller module is realized through the data bus, address bus and control signal lines.

The hardware circuit in the master controller module is the control core with the microcontroller U1 (this embodiment adopts the ARM9 product of ATMEL company——AT91RM9200 chip), and the storage part is composed of random access memory U2 and flash memory U3, which are respectively connected with the microcontroller U1 ; Among them, the fieldbus gateway management program, PROFIBUS DP and FF H1 fieldbus communication programs are stored in the flash memory U3. Different from the commonly used PROFIBUS DP protocol chip (such as SPC3) in the development of DP equipment at present, the present invention fully realizes the communication protocol function of PROFIBUS DP from the equipment. The PROFIBUS DP communication module establishes communication links with other DP slave devices through the DP master station on the PROFIBUS DP bus, and can exchange data with each other; the FF H1 communication module, as the FF H1 basic device, connects with other FF H1 devices through virtual communication ( VCR) establishes a communication relationship, and can exchange data with each other; the fieldbus gateway management program establishes a data mapping relationship between the two network device data, and maintains a data mapping relationship table at the same time, thereby realizing the data exchange function.

PROFIBUS DP interface module is made up of the 1st communication controller (the present embodiment adopts high-speed RS485 communication controller) and the 1st MAU module, wherein the 1st communication controller is realized by FPGA device programming, implements the reception of message, sends control, provides sending 1. Receive buffer; the first MAU module sends messages to the PROFIBUS DP bus or receives messages from the PROFIBUS DP bus under the control of the first communication controller.

The PROFIBUS DP interface module is composed of the first communication controller and the first MAU module, wherein the first communication controller can be realized by FPGA device programming, and can also be realized by high-speed CPU, and needs to automatically adapt to different communication rates from 9600bps to 12Mbps Change, the first communication controller implements the receiving and sending control of messages, and provides sending and receiving buffers, specifically to receive the data of the main controller module, send it to the PROFIBUS DP bus through the first MAU module, or receive the data uploaded by the first MAU module The data is then sent to the main controller module; the first MAU module sends messages to the PROFIBUS DP bus or receives messages from the PROFIBUS DP bus under the control of the first communication controller.

The FF H1 interface module is composed of a second communication controller and a second MAU module conforming to the fieldbus IEC 61158 international standard, wherein the second communication controller can use FBC0409 chip or FB3050 chip to realize the reception and transmission of FF H1 communication messages function, and can provide address filtering and timer support, specifically to receive the data of the main controller module, send it to the FF H1 bus through the second MAU module, or receive the data uploaded by the second MAU module and then send it to the main controller module; using FBC0409 chip The second communication controller is also embedded with 4K RAM, which can be used as a buffer for sending and receiving messages; under the control of the first communication controller, the second MAU module sends messages to the FF H1 bus or receives messages from the FF H1 bus It can also realize functions such as filtering and shaping of bus signals.

As shown in Figure 2, it is a functional block diagram of the software structure of PROFIBUS DP gateway equipment and FF H1 gateway equipment. The fieldbus gateway management software is located on the PROFIBUS DP communication software (in PROFIBUS DP communication protocol stack) and FF H1 communication software (FF H1 communication protocol stack), and the fieldbus gateway management software realizes data exchange based on the above two communication protocol stacks Function. The data mapping relationship between the two buses is stored in the data mapping relationship table, which is called by the fieldbus gateway management software; the PROFIBUS DP driver and FF H1 driver are the bottom of the software structure, and are used to receive and send messages , specifically: the FF H1 driver realizes the receiving and sending of FF H1 messages by controlling the second communication controller; the PROFIBUS DP driver realizes the receiving and sending of PROFIBUS DP messages by controlling the first communication controller.

As shown in Figure 3, the physical layer in the FF H1 field bus implements functions such as bus signal shaping and filtering; the data link layer is in the second layer of the FF H1 field bus, and it is the basis for transmitting "bit" information at the physical layer On the network, data information called frames are transmitted between adjacent nodes. Errors may occur during data transmission, and the data link layer needs to perform error detection and error correction to provide error-free transparent transmission to the upper layer. The system management module in the application layer is used to coordinate the operations among various devices in the FF H1 fieldbus; the network management module in the application layer provides the ability to manage the field device communication system for the external network administrator application; The application layer module is an intermediate link in the communication between FF H1 fieldbus devices, and is responsible for encoding and decoding the passing data.

As shown in Figure 4, the physical layer in the PROFIBUS DP field bus is responsible for bus signal processing and data transmission and reception; the data link layer is responsible for the management of bus access authority and link communication relationship (such as SAP); the application layer is responsible for reporting The encoding and decoding of text; the user layer is responsible for the processing of field data.

As shown in Figure 5, the fieldbus gateway management module realizes the two-way transmission of two fieldbus data by maintaining the mapping relationship in the data mapping relationship table.

Claims (4)

1. industrial automation field bus gateway equipment is characterized in that comprising:

The main controller module; Through operation field bus gateway management software field bus gateway is implemented management; Sending and receiving control through operation PROFIBUS DP field bus communication software realization PROFIBUSDP message realizes the sending and receiving control of FF H1 message through operation FF H1 field bus communication software;

PROFIBUS DP interface module is responsible for reception, transmission and verification work based on the PROFIBUD DP message of High-Speed RS 485, through data/address bus, address bus and the control signal wire realization physical connection with the main controller module;

FF H1 interface module is responsible for reception, transmission and the verification work of FF H1 message, through data/address bus, address bus and the control signal wire realization physical connection with the main controller module.

2. according to the described industrial automation field bus gateway equipment of claim 1; It is characterized in that: said main controller module is made up of microcontroller, storage area; With microcontroller (U1) is the control core; Storage area is made up of random asccess memory (U2), flash memory (U3), links to each other with microcontroller (U1) respectively; Wherein flash memory (U3) has field bus gateway hypervisor, PROFIBUS DP and FF H1 field bus communication program.

3. according to the described industrial automation field bus gateway equipment of claim 1; It is characterized in that: said PROFIBUS DP interface module is made up of the 1st communication controler and 1MAU module; Wherein the 1st communication controler receives the data of main controller module; Be sent to PROFIBUS DP bus through the 1MAU module, perhaps receive data that the 1MAU module the uploads main controller module of redispatching; The 1MAU module is sent message or civilian from the receiving of PROFIBUS DP bus interface to PROFIBUS DP bus under the control of the 1st communication controler.

4. according to the described industrial automation field bus gateway equipment of claim 1; It is characterized in that: said FF H1 interface module is made up of the 2nd communication controler and the 2MAU module that meet fieldbus IEC 61158 international standards; Wherein the 2nd communication controler receives the data of main controller module; Be sent to FF H1 bus through the 2MAU module, perhaps receive data that the 2MAU module the uploads main controller module of redispatching; The 2MAU module is sent message or civilian from the receiving of FF H1 bus interface to FF H1 bus under the control of the 1st communication controler.

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