CN107948059A - EtherCAT and Modbus protocol conversion gateways based on SPARC architecture microprocessors - Google Patents
EtherCAT and Modbus protocol conversion gateways based on SPARC architecture microprocessors Download PDFInfo
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- CN107948059A CN107948059A CN201711394712.6A CN201711394712A CN107948059A CN 107948059 A CN107948059 A CN 107948059A CN 201711394712 A CN201711394712 A CN 201711394712A CN 107948059 A CN107948059 A CN 107948059A
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- 238000002224 dissection Methods 0.000 claims description 4
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/08—Protocols for interworking; Protocol conversion
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/66—Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
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Abstract
The present invention provides a kind of EtherCAT based on SPARC architecture microprocessors and Modbus protocol conversion gateways, and the gateway includes：EtherCAT is connected, for handling EtherCAT slave stations physical layer and data link layer protocol from station control with least two EtherCAT communication interfaces；485 interface circuits of RS, for carrying out bi-directional conversion processing to Modbus rtu protocols data frame and 485 signal data frames；SPARC architecture microprocessors, carry out two-way communication for 485 interface circuits of RS with being connected by the EtherCAT that communication bus is connected from station control and by serial communication and the EtherCAT are carried out communication conversion from the EtherCAT slave stations application layer protocol of station control and the Modbus RTU master station applications layer protocols of 485 interface circuits of RS.The present invention can farthest improve security and production autonomous control ability, further expand the communication scope of application, and cost is greatly reduced.
Description
Technical field
The present invention relates to technical field of industrial automatic control, more particularly to it is a kind of based on SPARC architecture microprocessors
EtherCAT and Modbus protocol conversion gateways.
Background technology
At present, Ethernet auto-control technology (Ethernet Control Automation Technology, below
Abbreviation EtherCAT) it is initially by Elektro Beckhoff GmbH (Beckhoff Automation GmbH) in 2003
A kind of real-time industrial ethernet technology proposed based on ethernet technology, which not only has at a high speed and high data are efficient
Feature, also has the advantages that controlling cycle is short, networked-induced delay is high, topological structure is versatile and flexible, configuration is easy, above-mentioned advantage makes
Its occupation rate of market and customers' approval degree are continuously improved.The technology uses primary and secondary structure, and main website has bus control right, main website
According to controlling cycle downward message, all slave station equipments of data frames traverse, each slave station equipment is addressed when data frame passes through
To our station message, order write-in data or reading the data designated position into message in data frame.Until data frame
Have access to last slave station in whole bus.
Meanwhile Modbus-RTU is a kind of communications protocol developed by MoDICon companies, and Modbus technologies are used as certainly
The most popular standard for Fieldbus in dynamic chemical industry field.A kind of Modbus also " MS master-slave " structural systems, are realized
One main equipment is communicated with multiple slave devices.Modbus-RTU slave station equipments are typically all field instrument equipment, all
Field instrument equipment is all connected by RS485 interfaces.When Modbus-RTU master devices are wanted to obtain from a slave station equipment
When data, master device will send one and be used to detect asking for mistake comprising the device address, required data and one
With the information of check code.Every other equipment on network it can be seen that this information, but only address it is appointed from
Station equipment can just make a response.
But in industry spot, different industrial bus equipment forms respective bus network and is communicated, different
Data interaction can not be directly carried out between bus apparatus, inconvenience is brought to industry spot use.
The content of the invention
EtherCAT provided by the invention based on SPARC architecture microprocessors and Modbus protocol conversion gateways, can
Farthest improve security and production autonomous control ability, further expand the communication scope of application, and significantly subtract
Few cost.
Turn in a first aspect, the present invention provides a kind of EtherCAT based on SPARC architecture microprocessors and Modbus agreements
Draping is closed, including：
EtherCAT is connected with least two EtherCAT communication interfaces from station control, for handle EtherCAT from
Physical layer of standing and data link layer protocol；
RS-485 interface circuits, for carrying out bi-directional conversion to Modbus-RTU protocol data frames and 485 signal data frames
Processing；
SPARC architecture microprocessors, for from station control and passing through string with by the EtherCAT that communication bus is connected
The RS-485 interface circuits of port communications connection carry out two-way communication and by the EtherCAT from the EtherCAT of station control from
The Modbus-RTU master station applications layer protocol of application layer protocol and the RS-485 interface circuits of standing carries out communication conversion.
Alternatively, the SPARC architecture microprocessors include：
Shift control module, for by EtherCAT slave station application layer protocols of the EtherCAT from station control and institute
The Modbus-RTU master station applications layer protocol for stating RS-485 drive circuits carries out communication conversion；
Interrupt response module, for receiving the IRQ interrupt signals produced by EtherCAT from station control, and according to described
Interrupt signal performs IRQ interrupt process.
Alternatively, the shift control module includes：
First protocol conversion module, for reading and writing EtherCAT slave station protocols data packet and being parsed to the data packet
Then valid data after EtherCAT slave station protocol resolve packets are converted into Modbus-RTU protocol data frames simultaneously by processing
Export to RS-485 interface circuits；
Second protocol modular converter, for receiving and dispatching Modbus-RTU protocol data frames and being carried out to the data frame at parsing
Reason, the valid data after then Modbus-RTU protocol data frames are parsed are converted into EtherCAT slave station protocols data packet and defeated
Go out to EtherCAT from station control.
Alternatively, the gateway further includes：
SRAM, is connected with the SPARC architecture microprocessors, and for storing the journey of SPARC architecture microprocessors operation
Sequence and data message；
Flash, is connected with the SPARC architecture microprocessors, and starts for storing needed for SPARC architecture microprocessors
The program of loading, the configuration information of the EtherCAT slave stations application layer protocol and Modbus-RTU protocol stacks and described
The configuration information of Modbus-RTU master station applications layer protocol and EtherCAT protocol stacks.
Alternatively, the gateway further includes：
EEPROM, is connected by iic bus with the EtherCAT from station control, for store the EtherCAT from
The configuration information of station control.
Alternatively, the RS-485 interface circuits include：
RS-485 drive circuits, are connected with SPARC architecture microprocessors and RS-485 interfaces respectively, for by described in
The Modbus-RTU protocol data frames of SPARC architecture microprocessors are sent with RS485 signals, or read Modbus-RTU slave stations
485 signals that equipment is sent through RS-485 interfaces with Modbus-RTU protocol data frames send to SPARC architecture microprocessors into
Row dissection process；
RS-485 interfaces, for receiving and dispatching RS-485 signals.
Alternatively, the RS-485 interface circuits further include：
Optical coupling isolator, is connected with RS-485 drive circuits and SPARC architecture microprocessors respectively, for isolating 485 cores
The communications pins of piece and the serial ports pin of SPARC architecture microprocessors.
Alternatively, the EtherCAT passes through EBUS Low voltage differential signaling lines from station control and EtherCAT communication interfaces
Connection, and work mould, differential mode inductance are set on the EBUS Low voltage differential signalings line.
EtherCAT provided in an embodiment of the present invention based on SPARC architecture microprocessors and Modbus protocol conversion nets
Close, the gateway mainly uses 32 domestic microprocessors of SPARC V8 frameworks, passes through parallel bus and EtherCAT slave station controls
Device ET1100 communications processed, and be connected by serial ports with RS485 interface circuits and carry out Modbus-RTU data frame transmitting-receivings, and then utilize
SPARC architecture microprocessors lead to the EtherCAT slave stations application layer protocol and Modbus-RTU master station application layer protocols
Letter conversion, realizes Modbus networks being incorporated to EtherCAT networks, be conducive to the centralized Control of equipment, improve the effect of automation
Rate.
Meanwhile the present invention is by using 32 domestic microprocessors of SPARC V8 frameworks, the one side SPARC V8 framves
Structure microprocessor uses register window structure, and function call speed is fast, while SPARC V8 frameworks are Open Source Frameworks, therefore,
Design and production entirely autonomousization can be realized using the architecture microprocessor；It is on the other hand, also further to improve information security,
Realize entirely autonomous controllable.
In conclusion gateway of the present invention farthest improves security and production autonomous control ability, into one
Step expands the communication scope of application, and cost is greatly reduced.
Brief description of the drawings
Fig. 1 is EtherCAT of the one embodiment of the invention based on SPARC architecture microprocessors and Modbus protocol conversion nets
The structure diagram of pass；
Fig. 2 is EtherCAT of the another embodiment of the present invention based on SPARC architecture microprocessors and Modbus protocol conversions
The structure diagram of gateway.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only
Only it is part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's all other embodiments obtained without making creative work, belong to the scope of protection of the invention.
The embodiment of the present invention provides a kind of EtherCAT based on SPARC architecture microprocessors and Modbus protocol conversion nets
Close, as shown in Figure 1, the gateway includes：
EtherCAT is connected, for handling EtherCAT from station control 11 with least two EtherCAT communication interfaces
Slave station physical layer and data link layer protocol；
RS-485 interface circuits 12, for carrying out two-way turn to Modbus-RTU protocol data frames and 485 signal data frames
Change processing；
SPARC architecture microprocessors 13, for from station control and passing through with by the EtherCAT that communication bus is connected
The RS-485 interface circuits of serial communication connection carry out two-way communication and the EtherCAT by the EtherCAT from station control
Slave station application layer protocol and the Modbus-RTU master station applications layer protocol of the RS-485 interface circuits carry out communication conversion.
EtherCAT provided in an embodiment of the present invention based on SPARC architecture microprocessors and Modbus protocol conversion nets
Close, the gateway mainly uses 32 domestic microprocessors of SPARC V8 frameworks, passes through parallel bus and EtherCAT slave station controls
Device ET1100 communications processed, and be connected by serial ports with RS485 interface circuits and carry out Modbus-RTU data frame transmitting-receivings, and then utilize
SPARC architecture microprocessors lead to the EtherCAT slave stations application layer protocol and Modbus-RTU master station application layer protocols
Letter conversion, realizes Modbus networks being incorporated to EtherCAT networks, be conducive to the centralized Control of equipment, improve the effect of automation
Rate.
Meanwhile the present embodiment is by using 32 domestic microprocessors of SPARC V8 frameworks, the one side SPARC V8
Architecture microprocessor uses register window structure, and function call speed is fast, while SPARC V8 frameworks are Open Source Frameworks, because
This, design and production entirely autonomousization can be realized using the architecture microprocessor；On the other hand, it is also further to improve information peace
Entirely, realize entirely autonomous controllable.
In conclusion gateway described in the present embodiment farthest improve security and production autonomous control ability, into
One step expands the communication scope of application, and cost is greatly reduced.
Alternatively, as shown in Fig. 2, the SPARC architecture microprocessors 13 include：
Shift control module 131, for the EtherCAT slave station application layer protocols by the EtherCAT from station control
Communication conversion is carried out with the Modbus-RTU master station applications layer protocol of the RS-485 drive circuits；
Interrupt response module 132, the IRQ interrupt signals produced for reception by EtherCAT from station control, and according to
The interrupt signal performs IRQ interrupt process.
Alternatively, the shift control module 131 includes：
First protocol conversion module 1311, for reading and writing EtherCAT slave station protocols data packet and being carried out to the data packet
Then valid data after EtherCAT slave station protocol resolve packets are converted into Modbus-RTU protocol datas by dissection process
Frame is simultaneously exported to RS-485 interface circuits；
Second protocol modular converter 1312, for receiving and dispatching Modbus-RTU protocol data frames and being solved to the data frame
Analysis is handled, and the valid data after then Modbus-RTU protocol data frames are parsed are converted into EtherCAT slave station protocol data packets
And export to EtherCAT from station control.
Specifically, the first protocol conversion module 1311 of SPARC architecture microprocessors 13 described in the present embodiment is by parallel
Bus responds slave station protocol data packets of the EtherCAT from station control ET1100, and resolve packet and processing are packaged into
Modbus-RTU protocol data frame formats, export to RS-485 interface circuits；
The second protocol modular converter 1312 of the SPARC architecture microprocessors 13 responds RS-485 interfaces electricity by serial ports
The Modbus-RTU protocol data frames on road, and data frame analyzing processing is packaged into slave station protocol data packet format, output is extremely
EtherCAT is from station control；And then realize that two-way interconnections of the EtherCAT between station control and RS-485 interface circuits is mutual
It is logical so that the gateway intelligent can adapt to EtherCAT agreements and Modbus agreements.
Meanwhile SPARC architecture microprocessors 13 and EtherCAT between station control ET1100 except parallel communications connects
Outside mouthful, ET1100_IRQ interrupt signals are further included；Wherein, the ET1100_IRQ interrupt signals by EtherCAT from station control
ET1100 produces the IRQ2 interruptions to SPARC architecture microprocessors 13, is EtherCAT from station control ET1100 application layer things
Part interrupts and clock sync break signal, the interrupt response module of SPARC architecture microprocessors 13 are responded by this interrupt signal
The various application-layer events of EtherCAT communications；And then improve the work safety and work efficiency of the gateway.
Alternatively, the gateway further includes：
SRAM14, is connected with the SPARC architecture microprocessors, and for storing the operation of SPARC architecture microprocessors
Program and data message；
Flash15, is connected with the SPARC architecture microprocessors, and starts SPARC architecture microprocessors institute for storing
The program that need to be loaded, the configuration information of the EtherCAT slave stations application layer protocol and Modbus-RTU protocol stacks and described
The configuration information of Modbus-RTU master station applications layer protocol and EtherCAT protocol stacks.
Specifically, SPARC architecture microprocessors described in the present embodiment 13 extends out static state by 16 data address bus
Random access memory SRAM and flash ROM FLASH.
Alternatively, the gateway further includes：
EEPROM16, is connected by iic bus with the EtherCAT from station control, for storing the EtherCAT
From the configuration information of station control.
Alternatively, the RS-485 interface circuits 12 include：
RS-485 drive circuits 121, are connected with SPARC architecture microprocessors and RS-485 interfaces respectively, for by described in
The Modbus-RTU protocol data frames of SPARC architecture microprocessors are sent with RS485 signals, or read Modbus-RTU slave stations
485 signals that equipment is sent through RS-485 interfaces with Modbus-RTU protocol data frames send to SPARC architecture microprocessors into
Row dissection process；
RS-485 interfaces 122, for receiving and dispatching RS-485 signals.
Alternatively, the RS-485 interface circuits 12 further include：
Optical coupling isolator 123, is connected with RS-485 drive circuits and SPARC architecture microprocessors respectively, for isolating 485
The communications pins of chip and the serial ports pin of SPARC architecture microprocessors.
Specifically, by RS-485 drive circuits 121 and SPARC in RS-485 interface circuits described in the present embodiment 12
Architecture microprocessor sets optically coupled isolator 123, on the one hand improves the system anti-electromagnetic interference capability of the gateway；It is another
Aspect also realizes the electrical isolation of Modbus-RTU communication fields side and gateway system side, is done so as to improve the anti-electromagnetism of slave station system
The ability disturbed.
Meanwhile the RS-485 interface circuits on 485 difference transmission lines also by setting TVS pipe and terminal partial pressure electricity
Resistance, further increases the antijamming capability of the gateway communication.
Alternatively, the EtherCAT passes through EBUS Low voltage differential signaling lines from station control and EtherCAT communication interfaces
Connection, and work mould, differential mode inductance are set on the EBUS Low voltage differential signalings line.
Specifically, the EBUS low pressure in the present embodiment in EtherCAT between station control and EtherCAT communication interfaces
Common mode, differential mode inductance are set on difference transmission lines, further improve the anti-common mode of the gateway, the ability of differential mode electromagnetic interference.
The above description is merely a specific embodiment, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, the change or replacement that can readily occur in, all should
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be subject to scope of the claims.
Claims (8)
1. a kind of EtherCAT based on SPARC architecture microprocessors and Modbus protocol conversion gateways, it is characterised in that bag
Include：
EtherCAT is connected, for handling EtherCAT slave station things from station control with least two EtherCAT communication interfaces
Manage layer and data link layer protocol；
RS-485 interface circuits, for carrying out bi-directional conversion processing to Modbus-RTU protocol data frames and 485 signal data frames；
SPARC architecture microprocessors, for leading to by the EtherCAT that communication bus is connected from station control and by serial ports
The RS-485 interface circuits of letter connection carry out two-way communication and should from the EtherCAT slave stations of station control by the EtherCAT
Communication conversion is carried out with the Modbus-RTU master station applications layer protocol of layer protocol and the RS-485 interface circuits.
2. gateway according to claim 1, it is characterised in that the SPARC architecture microprocessors include：
Shift control module, for by the EtherCAT from the EtherCAT slave stations application layer protocol of station control with it is described
The Modbus-RTU master station applications layer protocol of RS-485 drive circuits carries out communication conversion；
Interrupt response module, for receiving the IRQ interrupt signals produced by EtherCAT from station control, and according to the interruption
Signal performs IRQ interrupt process.
3. gateway according to claim 2, it is characterised in that the shift control module includes：
First protocol conversion module, for reading and writing EtherCAT slave station protocols data packet and being carried out to the data packet at parsing
Then valid data after EtherCAT slave station protocol resolve packets are converted into Modbus-RTU protocol data frames and defeated by reason
Go out to RS-485 interface circuits；
Second protocol modular converter, for receiving and dispatching Modbus-RTU protocol data frames and carrying out dissection process to the data frame,
Then the valid data after Modbus-RTU protocol data frames are parsed are converted into EtherCAT slave station protocols data packet and export
To EtherCAT from station control.
4. according to any gateways of claim 1-3, it is characterised in that the gateway further includes：
SRAM, is connected with the SPARC architecture microprocessors, and for store SPARC architecture microprocessors operation program and
Data message；
Flash, is connected with the SPARC architecture microprocessors, and starts loading needed for SPARC architecture microprocessors for storing
Program, the configuration information and the Modbus- of the EtherCAT slave stations application layer protocol and Modbus-RTU protocol stacks
The configuration information of RTU master station applications layer protocol and EtherCAT protocol stacks.
5. gateway according to claim 4, it is characterised in that the gateway further includes：
EEPROM, is connected by iic bus with the EtherCAT from station control, for storing the EtherCAT slave stations control
The configuration information of device processed.
6. according to any gateways of claim 1-5, it is characterised in that the RS-485 interface circuits include：
RS-485 drive circuits, are connected with SPARC architecture microprocessors and RS-485 interfaces respectively, for by the SPARC framves
The Modbus-RTU protocol data frames of structure microprocessor are sent with RS485 signals, or read Modbus-RTU slave station equipments warp
485 signals that RS-485 interfaces are sent are sent to SPARC architecture microprocessors with Modbus-RTU protocol data frames to be parsed
Processing；
RS-485 interfaces, for receiving and dispatching RS-485 signals.
7. gateway according to claim 6, it is characterised in that the RS-485 interface circuits further include：
Optical coupling isolator, is connected with RS-485 drive circuits and SPARC architecture microprocessors respectively, for isolating 485 chips
The serial ports pin of communications pins and SPARC architecture microprocessors.
8. according to any gateways of claim 1-7, it is characterised in that the EtherCAT from station control with
EtherCAT communication interfaces are connected by EBUS Low voltage differential signalings line, and set work on the EBUS Low voltage differential signalings line
Mould, differential mode inductance.
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Cited By (9)
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| CN109743301A (en) * | 2018-12-24 | 2019-05-10 | 武汉工程大学 | A kind of data receiving-transmitting system and method based on Modbus agreement |
| CN110417773A (en) * | 2019-07-26 | 2019-11-05 | 湖北三江航天红峰控制有限公司 | A kind of serial port protocol data acquisition analytic method, system and device |
| CN110531685A (en) * | 2019-09-25 | 2019-12-03 | 重庆智能机器人研究院 | A kind of EtherCAT bus multiaxis slave station system |
| CN110597154A (en) * | 2019-10-23 | 2019-12-20 | 山东一脉物联网科技有限公司 | Multifunctional composite tool monitoring device |
| CN111181824A (en) * | 2019-12-31 | 2020-05-19 | 苏州数言信息技术有限公司 | Method for realizing master-slave dual-role node in Modbus RTU network |
| CN117336380A (en) * | 2023-12-01 | 2024-01-02 | 浙江国利信安科技有限公司 | Network communication system, method, apparatus and medium for communication |
| CN117714236A (en) * | 2024-02-05 | 2024-03-15 | 中国电子信息产业集团有限公司第六研究所 | Gateway communication device and communication system |
| CN117792831A (en) * | 2024-02-27 | 2024-03-29 | 天津大学四川创新研究院 | Multi-protocol Modbus gateway control system and method |
| CN117714236B (en) * | 2024-02-05 | 2024-05-31 | 中国电子信息产业集团有限公司第六研究所 | Gateway communication device and communication system |
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| CN110597154A (en) * | 2019-10-23 | 2019-12-20 | 山东一脉物联网科技有限公司 | Multifunctional composite tool monitoring device |
| CN111181824A (en) * | 2019-12-31 | 2020-05-19 | 苏州数言信息技术有限公司 | Method for realizing master-slave dual-role node in Modbus RTU network |
| CN111181824B (en) * | 2019-12-31 | 2021-10-12 | 苏州数言信息技术有限公司 | Method for realizing master-slave dual-role node in Modbus RTU network |
| CN117336380A (en) * | 2023-12-01 | 2024-01-02 | 浙江国利信安科技有限公司 | Network communication system, method, apparatus and medium for communication |
| CN117336380B (en) * | 2023-12-01 | 2024-03-05 | 浙江国利信安科技有限公司 | Network communication system, method, apparatus and medium for communication |
| CN117714236A (en) * | 2024-02-05 | 2024-03-15 | 中国电子信息产业集团有限公司第六研究所 | Gateway communication device and communication system |
| CN117714236B (en) * | 2024-02-05 | 2024-05-31 | 中国电子信息产业集团有限公司第六研究所 | Gateway communication device and communication system |
| CN117792831A (en) * | 2024-02-27 | 2024-03-29 | 天津大学四川创新研究院 | Multi-protocol Modbus gateway control system and method |
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