CN106685735A - EPA (ethemet for plant automation) on-chip system, EPA communication system and EPA communication method - Google Patents
EPA (ethemet for plant automation) on-chip system, EPA communication system and EPA communication method Download PDFInfo
- Publication number
- CN106685735A CN106685735A CN201710066480.5A CN201710066480A CN106685735A CN 106685735 A CN106685735 A CN 106685735A CN 201710066480 A CN201710066480 A CN 201710066480A CN 106685735 A CN106685735 A CN 106685735A
- Authority
- CN
- China
- Prior art keywords
- epa
- configuration
- message
- network
- rte
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
- H04L41/0806—Configuration setting for initial configuration or provisioning, e.g. plug-and-play
- H04L41/0809—Plug-and-play configuration
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
- H04L41/084—Configuration by using pre-existing information, e.g. using templates or copying from other elements
- H04L41/0846—Configuration by using pre-existing information, e.g. using templates or copying from other elements based on copy from other elements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L49/00—Packet switching elements
- H04L49/10—Packet switching elements characterised by the switching fabric construction
- H04L49/109—Integrated on microchip, e.g. switch-on-chip
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0896—Bandwidth or capacity management, i.e. automatically increasing or decreasing capacities
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/12—Discovery or management of network topologies
Abstract
The invention provides an EPA (ethemet for plant automation) on-chip system, an EPA communication system and an EPA communication method in order to solve technical problems. A third non-real-time phase is added to EPA data communication on the basis of previous periodic and non-periodic communications, non-EPA messages can be supportively and compatibly dispatched and processed apart from EPA periodic messages and non-periodic messages, the on-chip system is supportive to not only EPA configuration software of an upper computer to be pre-configured but also to common EPA message dispatch to be pre-configured, and limitation of the EPA configuration software is broken through; meanwhile, parameters of macro period, module communication time slots, periodic time and the like can be determined on the on-chip system according to situations of scale and data size of entire network, and singular distribution of EPA modules by users is avoided.
Description
Technical field
The present invention relates to EPA communication technologys, more particularly to a kind of EPA SOC(system on a chip), EPA communication systems and communication means.
Background technology
The ethernet standard (Ethemet for Plant Automation, EPA) of industrial automation industry, be
The mainstream technology of the business computer such as Ethernet, TCP/IP communications field directly applies to logical between Industry Control field apparatus
Letter, and on this basis, the open network communications platform for being applied to be communicated between industrial field device of foundation.EPA communication modules
All with EPA cores as core, with microprocessor, MAC module and memory module etc. system is constituted.Existing EPA SOC(system on a chip)
It is, with EPA protocol stacks as core, to constitute with microprocessor, memory module and on-chip bus, but existing EPA SOC(system on a chip)
Have a disadvantage that：
1st, the communication scheduling and clock synchronizing function of EPA are simply simply realized, when there is an equipment in network therefore
When barrier needs to change, it is necessary to which whole network is stopped to be carried out equipment replacement and could continue communication, it is impossible to realize online inserting i.e.
With.
2nd, its configuration is also normally based on EPA configuration softwares and carries out, and configuration mode is single, and user using front need association
Configuration software is used, and the transmitting-receiving that EPA messages can only be supported when connected network communication communicates, if other kinds of message occurs
Then EPA dispatching communications chaotic will malfunction.
3rd, on bus architecture, EPA cores and CPU are connected on same bus on chip, when EPA amount of communication data is larger
Bus can be occupied by EPA cores, and now CPU will be waited if necessary to the reading data from MEM or when writing data in always
State, real-time is affected.
4th, during configuration EPA system, user need to carry out call duration time groove and isoparametric meter cycle time to each module
Calculate and distribute, configuration work is loaded down with trivial details and easy error.
The content of the invention
The technical problem to be solved is to provide a kind of EPA SOC(system on a chip), EPA communication systems and communication means,
Achievable mixed communication.
To solve the above problems, the present invention proposes a kind of EPA SOC(system on a chip), including EPA modules, CPU module, memory module
And ahb bus；The EPA modules, CPU module, memory module connect the ahb bus；
The memory module, to stored messages, and provides read and write access；
The CPU module, when SOC(system on a chip) is chosen to be master control SOC(system on a chip), to obtain configuration configuration message, and
Driven SOC(system on a chip) configuration configuration message being handed down in network, or, when SOC(system on a chip) is chosen as driven SOC(system on a chip),
Receive the configuration configuration message that the master control SOC(system on a chip) is issued；According to network capacity, network in the configuration configuration message
Topological structure and device id, it is determined that the configuration information to the EPA modules, the configuration information include EPA modules the grand cycle,
The communications slot time span between EPA modules under linking relationship and each linking relationship, it is all that the grand cycle is divided into RTE
Stage phase, RTE stages aperiodic, non-RTE stage of communication；
The EPA modules, to the configuration information according to the CPU module configuration configuration is carried out, in the RTE cycles rank
For communicating with the EPA message datas between the EPA modules under its linking relationship in section, RTE stages aperiodic, described non-
For receiving or sending EPA messages or common ether network packet in RTE stage of communication, and message is parsed, transmitted to institute
State in memory module so that the CPU module is read out process.
According to one embodiment of present invention, in the non-RTE stage of communication, EPA modules are by sending scanning message
Mode scan whole network, receive the common ether network packet responded in network and simultaneously parse, forming configuration configuration message is carried out
Configuration configuration message is sent to the new driven SOC(system on a chip) for accessing and carries out configuration configuration by storage, the CPU module, with not shadow
Ring the plug and play that new EPA modules are realized under RTE signal intelligences.
According to one embodiment of present invention, the configuration configuration message is the EPA message or root issued by host computer
Formed according to common Ethernet packet parsing, or be the common Ethernet received in non-RTE stage of communication by the EPA modules
Packet parsing is formed.
According to one embodiment of present invention, also including AHB-LITE, EPA modules are realized and institute by the AHB-LITE
State the data transfer of memory module, it is ensured that CPU module can be realized being passed with the data of the memory module by ahb bus simultaneously
It is defeated.
According to one embodiment of present invention, the EPA modules include：EPA nuclear unit, MAC unit, AHB interface unit,
Network topology management unit and communications interface unit；
The communications interface unit is used for access network；
The MAC unit connects the communication interface, for transmitting EPA messages or common ether network packet, realizes EPA
Communication or ethernet communication；
The AHB interface unit, connects ahb bus, for receiving the configuration information of the CPU module；
The EPA nuclear unit, to be configured according to the configuration information, in the different cycles stage MAC is gated
The EPA messages or common ether network packet of unit transmission, is carried out packet parsing and is write in memory module by AHB-LITE.
According to one embodiment of present invention, the EPA modules are also being chosen to be on driven disc in SOC(system on a chip)
During system, receiving the configuration configuration message of the EPA modules of the active SOC(system on a chip) carries out corresponding configuration, the RTE phases of the cycles,
EPA message numbers are carried out between EPA modules in RTE stages aperiodic and under its linking relationship by respective communications slot time span
According to communication, it is used to sending or receiving EPA messages or common ether network packet in non-RTE stage of communication.
The present invention also provides a kind of EPA communication systems, including：EPA main control ends and EPA driven ends, the EPA main control ends and
Network connection between EPA driven ends；
The EPA main control ends, to obtain configuration configuration message, network capacity in the configuration configuration message,
Network topology structure and device id, determine the RTE phases of the cycles, RTE stages aperiodic, non-RTE stage of communication and communications slot time
Length, according to device id linking relationship is distributed, and carries out configuration configuration；The EPA driven ends being handed down to by configuration message in network,
Within the RTE phases of the cycles, RTE stages aperiodic with its linking relationship under EPA driven ends between press the respective communications slot time
Length carries out EPA message data communications, is used to receiving or sending the EPA messages or general of EPA driven ends in non-RTE stage of communication
Pass to too network packet；Message to receiving carries out dissection process；
The EPA driven ends, to the configuration configuration message for receiving the EPA main control ends corresponding configuration is carried out, all in RTE
Respective communications slot is pressed between EPA main control ends or EPA driven ends in stage phase, RTE stages aperiodic and under its linking relationship
Time span carries out EPA message data communications, is used to sending or receiving EPA messages or common ether in non-RTE stage of communication
Network packet.
According to one embodiment of present invention, also including new EPA driven ends, during network service, network is inserted；
In the non-RTE stage of communication, EPA main control ends scan whole network by way of sending and scanning message, and receive in network
The common ether network packet of each EPA driven ends response, the information and existing operational network in the common ether network packet of response
Configuration information, configuration configuration message is formed, according to the new configuration configuration message for obtaining to EPA main control ends and new EPA driven ends
Between carry out configuration configuration, to realize the plug and play of new EPA driven ends in the case where RTE signal intelligences are not affected.
According to one embodiment of present invention, also configuration configuration message is issued to the EPA by network including host computer
Main control end carries out configuration configuration.
The present invention also provides a kind of EPA communication means, comprises the following steps：
S1：Host computer issues configuration configuration message into the EPA main control ends by network；
S2：The EPA main control ends obtain configuration configuration message, according to network capacity, net in the configuration configuration message
Network topological structure and device id, determine that the RTE phases of the cycles, RTE stages aperiodic, non-RTE stage of communication and communications slot time are long
Degree, according to device id linking relationship is distributed, and carries out configuration configuration, and configuration configuration information is handed down to into network by configuration message
In EPA driven ends；
S3：The EPA driven ends carry out configuration configuration according to configuration message；
S4：After the completion of configuration, into communications status, within the RTE phases of the cycles, RTE stages aperiodic, closed according to link
System, is carried out between EPA main control ends and EPA driven ends or EPA driven ends and EPA driven ends by respective communications slot time span
EPA message datas communicate, and in non-RTE stage of communication, EPA main control ends receive or send the EPA messages or general of each EPA driven ends
Pass to too network packet.
According to one embodiment of present invention, in step S4, in non-RTE stage of communication, EPA main control ends send and sweep
The mode for retouching message scans whole network, and receives the common ether network packet that each EPA driven ends are responded in network, according to response
Common ether network packet in information and existing operational network configuration information, form configuration configuration message.
According to one embodiment of present invention, also including step S5：If have new EPA driven ends to insert, EPA main control ends
Configuration configuration is carried out to new EPA driven ends according to the new configuration configuration message for obtaining, the linking relationship of new EPA driven ends is configured
For master-slave communication.
According to one embodiment of present invention, in step S5, when EPA main control ends newly obtain configuration configuration message,
The new EPA driven end access networks are determined whether according to existing network capacity, in network capacity less than in the case of, is
The new EPA driven end configuration of IP, and configuration configuration is carried out to new EPA driven ends.
According to one embodiment of present invention, when EPA main control ends close EPA communication patterns, common Ethernet is switched to
Communication pattern.
According to one embodiment of present invention, when a network fails, EPA main control ends are received according to the RTE phases of the cycles
To cycle message judged, positioning failure type, and failure is reported by real time circular or timing circular mode；
The real-time circular is reported immediately once to there is situation by event message, interrupt mode；Timing circular be
Add status data in cycle FRT message about in fixed cycle to be reported.
After above-mentioned technical proposal, the present invention has the advantages that compared to existing technology：
EPA data communication increased the 3rd non real-time stage on the basis of conventional cycle and aperiodic traffic, can prop up
Hold in addition to EPA cycles message and aperiodic message, the non-EPA messages of compatible transmitting-receiving process so that SOC(system on a chip) is except can be with
Support that host computer EPA configuration softwares carry out configuration configuration, it is also possible to which support carries out configuration and matches somebody with somebody by common Ethernet packet sending and receiving
Put, broken the restriction of EPA configuration softwares；Meanwhile, master control SOC(system on a chip) can be according to the scale of whole network and data volume
Situation determining the parameters such as grand cycle, module call duration time groove, cycle time, list is carried out to each EPA module without the need for user
Solely distribution；
The compatible function of common ethernet mac of EPA modules, can serve as when EPA messages are not received and dispatched commonly with
MAC is netted very much, the mixed communication of EPA messages and common ether network packet can be also supported under networking state, broken conventional EPA and led to
The unicity and limitation of letter；
Configuration configuration is carried out by common Ethernet packet sending and receiving so that plug-and-play feature, master control piece are supported in EPA communications
Whether the scanning of upper timing ground has new EPA modules to add network, after scanning is to new module, new equipment is carried out IP distribution and
Configuration is configured, and in order to not affect the communication of other modules, the linking relationship of new module is master-slave communication, i.e., new module is only and main
Control SOC(system on a chip) carries out communication data interaction, without the need for whole network is stopped the problem that more exchange device could communicate；
CPU module can access memory module and EPA modules by the ahb bus, and EPA modules are entered by the AHB-LITE
The read-write of row communication data, so as to ensure that CPU module and EPA modules can be not in total while carry out the read-write of data
Line conflicts, and improves the real-time of EPA communications.
Description of the drawings
Fig. 1 is divided and data transfer schematic diagram for the grand cycle of the embodiment of the present invention；
Fig. 2 is the structured flowchart of the EPA SOC(system on a chip) of the embodiment of the present invention；
Fig. 3 is the structured flowchart of the EPA modules of the embodiment of the present invention；
Fig. 4 is the schematic flow sheet of the EPA communication means of the embodiment of the present invention.
Specific embodiment
It is understandable to enable the above objects, features and advantages of the present invention to become apparent from, below in conjunction with the accompanying drawings to the present invention
Specific embodiment be described in detail.
Elaborate many details in order to fully understand the present invention in the following description.But the present invention can be with
Much it is different from alternate manner described here to implement, those skilled in the art can be in the situation without prejudice to intension of the present invention
Under do similar popularization, therefore the present invention is not embodied as being limited by following public.
Referring to Fig. 2, in one embodiment, EPA SOC(system on a chip) includes that EPA modules, CPU module, memory module and AHB are total
Line.EPA modules, CPU module, memory module connection ahb bus, by ahb bus the transmission of data is realized.SOC(system on a chip) point master
Clock and from clock, in a network, SOC(system on a chip) can select one as master control SOC(system on a chip), and remaining used as being on driven disc
System.
Memory module includes SRAM on FLASH, piece on piece.SOC(system on a chip) can be connect with integrated various communication interfaces, communication
The interface mouthful for example including CAN, I2C, SPI, UART, GPIO etc., and the system resource such as intervalometer, house dog, interrupt control unit,
It is connected on ahb bus by bridge-set.
AHB：Advanced High-Performance Bus (Advanced High-performance Bus), belong to AMBA bus architectures one
Part.AMBA：Advanced Microcontroller Bus system (Advanced Microcontroller Bus Architecture) be by
A kind of popular industrial standard on-chip bus standard that ARM companies release.
Memory module is used for stored messages, and provides read and write access.EPA modules, CPU module can pass through ahb bus
Memory module is accessed, message is read or write.Memory module storage message for example can be configuration configuration message, in the grand cycle
Message of transmitting-receiving etc., it is can prestoring or receive and dispatch in communication process, can store in a storage module.
CPU module, to when SOC(system on a chip) is chosen to be master control SOC(system on a chip), obtains configuration configuration message, and by group
State configuration message is handed down to the driven SOC(system on a chip) in network, or, when SOC(system on a chip) is chosen as driven SOC(system on a chip), receive
The configuration configuration message that the master control SOC(system on a chip) is issued；Configuration configuration message can be that the EPA configuration softwares of host computer are issued
, it is also possible to the information obtained according to common Ethernet packet parsing and the configuration information of existing operational network calculate what is obtained.
Network capacity of the CPU module in configuration configuration message, network topology structure and device id, it is determined that to EPA moulds
The configuration information of block, can be logical between grand cycle, module according to calculating for the scale of whole network and data volume intelligence
The parameters such as letter groove time span, cycle time, according to device id linking relationship is distributed.
Configuration information includes logical between the EPA modules under grand cycle, linking relationship and each linking relationship of EPA modules
Letter groove time span, the grand cycle is divided into RTE (real-time) phases of the cycles, RTE stages aperiodic, non-RTE stage of communication.Link
Relation is the data transmission relations of the EPA modules in network, has between two EPA modules of data transfer and just there is Data-Link
Connect, linking relationship can be allocated according to device id, user can send message by between modules by upper computer software
Communication linkage relation be pre-stored in the EPA modules of master control SOC(system on a chip).Communications slot time span is to pass between two EPA modules
The time of a defeated secondary data, a cycle is divided into multiple communications slots.
In one embodiment, configuration information can include the switching information of EPA functions, master clock from clock information, grand
Cycle, RTE cycle times, RTE times aperiodic, non-RTE call duration times, storage address etc..According to the switching information of EPA functions
Can start or close the EPA functions of SOC(system on a chip), when EPA functions are enabled, into EPA Configuration Communication patterns, and in EPA work(
When can close, EPA modules can be used as common ethernet mac, support the transmitting-receiving of common ether network packet.According to master clock from
Clock information can be used to realize clock synchronization.
Master control SOC(system on a chip) becomes EPA main control ends, and EPA modules therein carry out configuration according to the configuration information of CPU module
Configuration, and configuration information is handed down to by driven SOC(system on a chip) in network by configuration message, complete the configuration process of EPA communications.
In communication process after the completion of configuration, it is used within the RTE phases of the cycles, RTE stages aperiodic and the EPA moulds under its linking relationship
EPA message datas communication between block, is used to receiving or sending EPA messages or common Ethernet report in non-RTE stage of communication
Text, and message is parsed, transmit into memory module so that CPU module is read out process.At specific packet parsing
Reason is not intended as limiting.
EPA modules provide a series of configuration register (AHB interface module) on piece, and CPU module can be posted by configuring
The mode of storage configures EPA modules.32 general ARM kernels are generally adopted as the CPU module of flush bonding processor, but
Other available microprocessors can be adopted.
Driven SOC(system on a chip) receives the configuration configuration message of master control SOC(system on a chip), and CPU is according to the configuration configuration message for receiving
Corresponding configuration is carried out to EPA modules, within the RTE phases of the cycles, RTE stages aperiodic with its linking relationship under EPA modules it
Between carry out EPA message data communications by respective communications slot time span, in non-RTE stage of communication be used for send EPA messages
Or common ether network packet.
EPA data communication increased three phases on the basis of conventional cycle and aperiodic traffic, can support except
Beyond EPA cycles message and aperiodic message, the non-EPA messages of compatible transmitting-receiving process；Meanwhile, master control SOC(system on a chip) can be according to whole
The scale of individual network and the situation of data volume determining the parameters such as grand cycle, module call duration time groove, cycle time, without the need for use
Family is individually distributed each EPA module.
The compatible function of common ethernet mac of EPA modules, can serve as when EPA messages are not received and dispatched commonly with
MAC is netted very much, the mixed communication of EPA messages and common ether network packet can be also supported under networking state, broken conventional EPA and led to
The unicity and limitation of letter.
The grand cycle of the transmission of EPA communication datas is divided into three phases, as shown in figure 1,
Stage one：In RTE periodic datas transmission period (the RTE phases of the cycles), the cycle of based role equality is employed
Property data dispatching method, the stage for the data that periodically send, the transmission cycle message that each equipment can be at regular time and quantity,
It can be real time data, or non-real-time data to carry in message, and equipment can apply for message aperiodic in cycle message
Priority；
Stage two：In RTE data transmission periods aperiodic (RTE stages aperiodic), employ based on priority preemptive type
Data transmission technology aperiodic of scheduling, by the technology definitiveness of data transfer in EPA controlling networks is ensure that；Main equipment
Judged according to the priority of all devices application, it is intended that the equipment of limit priority carries out the transmission of message aperiodic, often
Individual data transmission period aperiodic only allows an equipment to send message aperiodic；
Stage three：Non- RTE data transfer phase (non-RTE stage of communication), EPA is except supporting the message with EPA forms
In addition, while supporting common ether network packet, in the non-RTE stage of communication time, each equipment can send common Ethernet
Non-real-time data, is not limited by EPA scheduling mechanisms, and this enables EPA preferably to enter deterministic schedule and common Ethernet
Row is combined, and realizes mixed communication.
Cycle message is transmitted according to the configuration good RTE phases of the cycles and communications slot time span.Sync message conduct
Aperiodic message, for the clock synchronization between EPA modules, clock synchronization algorithm follows IEEE1588 agreements.Non- RTE communications rank
For scanning the non real-time packet sending and receiving such as message, event message in section, these messages can be common ether network packet.
In one embodiment, in non-RTE stage of communication, EPA modules are scanned whole by way of sending and scanning message
Individual network, receive network in respond common ether network packet and parse stored as configuration configuration message, the CPU moulds
Block sends configuration configuration message to the new driven SOC(system on a chip) for accessing, and the configuration configuration of driven SOC(system on a chip) is realized, with not
Affect the plug and play that new EPA modules are realized under RTE signal intelligences.
Master control SOC(system on a chip) can be in timing scan network driven SOC(system on a chip), the EPA modules of driven SOC(system on a chip) are connecing
Receive and return response after scanning message, with information such as source MAC, device id number, amount of communication data in the message of response.It is main
The information of the EPA modules of each driven SOC(system on a chip) of EPA module collections of control SOC(system on a chip), dynamically distributes IP, and according to number of devices
And data volume calculates the parameters such as the transmission shift time of grand cycle, each equipment automatically, and the form by configuration message is issued
To the EPA modules of each driven SOC(system on a chip), the EPA modules of driven SOC(system on a chip) receive and deposit are parsed and configured after configuration message
Device.
Configuration configuration is carried out by common Ethernet packet sending and receiving so that plug-and-play feature, master control piece are supported in EPA communications
Whether the scanning of upper timing ground has new EPA modules to add network, after scanning is to new module, new equipment is carried out IP distribution and
Configuration is configured, and in order to not affect the communication of other modules, the linking relationship of new module is master-slave communication, i.e., new module is only and main
Control SOC(system on a chip) carries out communication data interaction, without the need for whole network is stopped the problem that more exchange device could communicate.
Configuration configuration message is issued by host computer, or by EPA modules receive in non-RTE stage of communication it is common with
Too net is reported, and the configuration information of information and existing operational network in common ether network packet is formed.So that SOC(system on a chip) except
Can support that host computer EPA configuration softwares carry out configuration configuration, it is also possible to which support carries out group by common Ethernet packet sending and receiving
State is configured, and has broken the restriction of EPA configuration softwares.
In one embodiment, EPA SOC(system on a chip) also includes AHB-LITE (simple ahb bus), and EPA modules pass through AHB-
LITE realizes the data transfer with memory module, it is ensured that CPU module can realize the data with memory module by ahb bus simultaneously
Transmission.
Referring to Fig. 2, CPU module, EPA modules, FLASH and SRAM etc. are connected on an ahb bus, EPA modules with
There is an AHB-LITE between SRAM.CPU module can access memory module and EPA modules, EPA modules by the ahb bus
The read-write of communication data is carried out by the AHB-LITE, so as to ensure that CPU module and EPA modules can be while carry out data
Read-write, is not in bus collision, improves the real-time of EPA communications.
Referring to Fig. 3, EPA modules include：EPA nuclear unit, MAC unit, AHB interface unit, network topology management unit and
Communications interface unit.Communications interface unit is used for access network, can be by network topology management unit come management interface connection
Network topology.MAC unit connection communication interface, can connect network topology management unit and be indirectly connected with communication interface,
For transmitting EPA messages or common ether network packet, realize that EPA communicates or ethernet communication.AHB interface unit connects AHB
Bus, for receiving the configuration information of CPU module, AHB interface unit can be a series of depositors, and configuration information can be deposited
Storage.EPA nuclear unit, to be configured according to configuration information, the EPA messages of MAC unit transmission is gated in the different cycles stage
Or common ether network packet, carry out packet parsing and write on SRAM by AHB-LITE.
EPA modules include MAC unit, communications interface unit, can support star-like, linear and loop network.Communication interface list
Unit has at least two groups MII or RMII interfaces, can support the networks such as star-like, line style, ring-like, independent dual star topology, redundancy dual star topology
Topological structure, is capable of achieving link redundancy, and EPA modules support the judgement and discarding of redundant message under redundant link pattern.EPA
Equipment redundancy interface is not limited to Ethernet MII/RMII interfaces, it would however also be possible to employ other available data communication interfaces.MII interfaces
Module is not limited only to expand two groups of MII/RMII interfaces, can as needed increase and decrease interface.
Redundant communication links include：Dual star topology and ring-like.Wherein dual star topology can support common Ethernet and EPA networks, ring
Type only supports EPA networks.During transmission：A, B port that EPA modules simultaneously send same a message, by source MAC (or sources
IP)+test serial number mark redundant message.During reception：FRT messages, SYNC messages are needed by hardware special handling, wherein SYNC messages
Receiving double data carries out the circuit delay calculating in different paths, and FRT is also needed to carry out two-way calculating, counted when off-course deviation is calculated
Judge to select circuit delay A or B, data to send a to SRAM during calculation；Remaining, message was delivered to respectively from A, B port aperiodic
CPU module carries out judgement discarding, and hardware does CRC judgements process.
The relevant sub-module function introduction of EPA protocol stacks
1st, periodic communication
EPA equipment in network carries out periodic communication scheduling according to configuration good grand cycle time and period migration time.
For clock equipment, after the completion of device configuration, i.e. open communication scheduling.
For from clockwork, after the completion of device line time delay is calculated, open communication scheduling, equipment room can pass through FRT
Message carries out the calculating communicated with clock jitter.Reception clock equipment FRT report need to be detected in running from clockwork
The situation of text, if continuous 10 cycles do not receive clock equipment FRT message, stops sending FRT messages.Now can not
Enter to ensure equipment clock synchronization accuracy.Treat that the equipment is received again after clock equipment FRT message, and recovered clock synchronization,
Continue to send FRT messages.
FRT messages adopt timesharing dispatching method, the cycle, etc. when send, in message carry data can be real time data
It can also be non-real-time data.
FRT is communicated using multicast mode, and the data for being sent to multiple equipment are contained in a message, therefore equipment exists
After receiving these messages, by being stored in local linking relationship, the data for being sent to local device are therefrom extracted.
2nd, clock synchronization
Clock is synchronously divided into two parts, calculates circuit delay and calculates clock jitter.Wherein circuit delay is to be based on
SYNC messages, clock jitter is based on FRT messages.Circuit delay and clock jitter are all initiated by main equipment, by entering from equipment
Row is calculated.
1) circuit delay
For main equipment, complete from after the configuration of equipment, to start to synchronizing request message from equipment in line
The transmission of SYNC_REQ.The mechanism that synchronization request message is sent using poll.CPU is pre-configured with poll start node number and poll
Scope, main equipment starts poll from start node number.When synchronously completing from equipment or 10 cycles do not respond, then poll is next
Individual equipment, it is all from equipment in the complete scope of poll.After poll completes one time, main equipment can carry out the poll of a new round,
What is synchronously completed will not respond synchronization request message from equipment after synchronously completing.
For from equipment, in the case where EPA functions are opened, receive and replied after the SYNC_REQ messages of main equipment transmission
Sync response message SYNC_RSP, and the transmitting-receiving time of SYNC_REQ and SYNC_RSP messages is recorded, carry out the meter of circuit delay
Calculation and the adjustment of PTP times, and circuit delay result of calculation is put into into SYNC_RSP messages to notify main equipment.
EPA has two network interfaces of A/B, for different network interfaces, needs to calculate different circuit delay.
2) clock jitter
Each grand cycle of main equipment sends FRT messages, and the transmission time of last FRT messages is carried in message.From setting
It is standby to receive the reception time that current FRT messages are recorded after FRT messages.When transmitting-receiving of the equipment according to circuit delay and FRT
Between, carry out the calculating of clock jitter and compensate internal clock synchronization compliant with precision time protocol.
For different network interfaces, need to select corresponding circuit delay to calculate clock jitter simultaneously according to the transmitting-receiving network interface of FRT
Compensate.
The present invention also provides a kind of EPA communication systems, including：EPA main control ends and EPA driven ends, EPA main control ends and EPA
Network connection between driven end.EPA main control ends can pass through previous embodiment in master control SOC(system on a chip) realize, EPA from
Moved end can pass through realizing in driven SOC(system on a chip) in previous embodiment, accordingly, be on the EPA pieces in previous embodiment
Being described in EPA communication systems for system is all adapted to, thus be will not be described here.
EPA main control ends obtain configuration configuration message, network capacity, network topology structure in configuration configuration message,
Linking relationship, determines the RTE phases of the cycles, RTE stages aperiodic, non-RTE stage of communication and communications slot time span, carries out configuration
Configuration, the EPA driven ends being handed down to by configuration message in network, with its chain within the RTE phases of the cycles, RTE stages aperiodic
Connect and carry out EPA message data communications by respective communications slot time span between the EPA driven ends under relation, in non-RTE communications
It is used to receiving or sending the EPA messages or common ether network packet of EPA driven ends in stage；Message to receiving is carried out at parsing
Reason；
EPA driven ends, to the configuration configuration message for receiving the EPA main control ends corresponding configuration is carried out, in RTE cycle ranks
The respective communications slot time is pressed between EPA main control ends or EPA driven ends in section, RTE stages aperiodic and under its linking relationship
Length carries out EPA message data communications, is used to sending or receiving EPA messages or common Ethernet report in non-RTE stage of communication
Text.
In one embodiment, EPA communication systems also include new EPA driven ends, during network service, insert net
Network；In the non-RTE stage of communication, EPA main control ends scan whole network by way of sending and scanning message, and receive net
The common ether network packet of each EPA driven ends response in network, the information and existing operation in the common ether network packet of response
The configuration information of network, forms configuration configuration message, according to the new configuration configuration message for obtaining to EPA main control ends and new EPA from
Configuration configuration is carried out between moved end, to realize the plug and play of new EPA driven ends in the case where RTE signal intelligences are not affected.
Whether EPA main control ends are periodically scanned has new EPA driven ends to add network, right after scanning is to new EPA driven ends
New EPA driven ends carry out IP distribution and configuration configuration, in order to not affect the communication at other ends, the linking relationship of new EPA driven ends
Simply master-slave communication, i.e., new EPA driven ends are only and EPA main control ends carry out communication data interaction, without the need for whole network is stopped
The problem that more exchange device could communicate.
EPA communication systems also include host computer, same to access in a network, and configuration configuration message is issued extremely by network
EPA main control ends carry out having EPA configuration configuration softwares in configuration configuration, host computer, can be used to initial configuration configuration, certainly
Again configuration configuration can also be carried out with EPA configurations configuration software after subsequent network stops, but in follow-up configuration, also may be used
To be configured without host computer, but configuration is carried out by common ether network packet.
Referring to Fig. 1, the present invention also provides a kind of EPA communication means, comprises the following steps：
S1：Host computer issues configuration configuration message into the EPA main control ends by network；
S2：The EPA main control ends obtain configuration configuration message, according to network capacity, net in the configuration configuration message
Network topological structure and device id, determine that the RTE phases of the cycles, RTE stages aperiodic, non-RTE stage of communication and communications slot time are long
Degree, according to device id linking relationship is distributed, and carries out configuration configuration, and configuration configuration information is handed down to into network by configuration message
In EPA driven ends；
S3：The EPA driven ends carry out configuration configuration according to configuration message；
S4：After the completion of configuration, into communications status, within the RTE phases of the cycles, RTE stages aperiodic, closed according to link
System, is carried out between EPA main control ends and EPA driven ends or EPA driven ends and EPA driven ends by respective communications slot time span
EPA message datas communicate, and in non-RTE stage of communication, EPA main control ends receive or send the EPA messages or general of each EPA driven ends
Too network packet is passed to, the message to receiving carries out dissection process.
Likewise, the master control SOC(system on a chip) that EPA main control ends can pass through in previous embodiment realizes that EPA driven ends can be with
Realizing in driven SOC(system on a chip) in by previous embodiment, accordingly, the description of the EPA SOC(system on a chip) in previous embodiment
All adapt in EPA communication systems.The EPA that the present embodiment can also be realized using the EPA communication systems of previous embodiment is led to
Letter method.
In one embodiment, in step S4, in non-RTE stage of communication, EPA main control ends send the mode of scanning message
Scanning whole network, and the common ether network packet of each EPA driven ends response in network is received, according to the common Ethernet of response
The configuration information of information and existing operational network in message, forms configuration configuration message, naturally it is also possible to make as other effects
With.
In one embodiment, EPA communication means also includes step S5：If have new EPA driven ends to insert, EPA master
Control end carries out configuration configuration according to the new configuration configuration message for obtaining to new EPA driven ends, by the linking relationship of new EPA driven ends
It is configured to master-slave communication.
In step s 5, when EPA main control ends newly obtain configuration configuration message, determined whether according to existing network capacity
The new EPA driven end access networks, are the new EPA driven end configuration of IP in network capacity less than in the case of, and to new
EPA driven ends carry out configuration configuration.
When EPA main control ends close EPA communication patterns when, switch to common ethernet communication, between EPA driven ends or its
He supports to carry out common ethernet communication between the equipment of ethernet communication.
When a network fails, as ring network has one section of circuit to disconnect, or module goes offline, main control module can root
Judged according to the cycle message for receiving, positioning failure type, and failure is reported by network state circular mechanism.
EPA main control ends are judged according to the cycle message that the RTE phases of the cycles receive, positioning failure type, and by failure by real
When circular or timing circular mode reported；The real-time circular passes through immediately event message, interrupts once to there is situation
Mode is reported；The timing circular is to add status data in cycle FRT message in about fixed cycle to be reported.
This is conducted further description again below.
User by upper computer software send EPA messages or common ether network packet by the linking relationship between EPA with
And the information such as network capacity, network topology structure is sent to EPA main control ends.
CPU module in EPA main control ends is parsed to data, when the EPA functions of EPA main control ends are opened, EPA master controls
End starts to scan whole network by way of sending and scanning message, returns response when EPA driven ends receive scanning message and reports
Text gives EPA main control ends, with information such as amount of communication data, device ids in response message.EPA main control ends are according to the response report for receiving
The amount of communication data of number of modules, modules in literary statistics network, and calculate cycle time, time aperiodic, non real-time
Respectively needs are how many for call duration time and modules communications slot time span, and distribute linking relationship according to device id, these ginsengs
Number will be handed down to slave module by the form of configuration message, and to slave module configuration configuration is carried out.Linking relationship can pass through upper
Machine is pre-stored in EPA main control ends.
After the completion of configuration, into communications status.Cycle message enters according to configuration good grand cycle time and transmission time slot
Row sends.The EPA modules at each end obtain in SRAM the data of cycle message from sending by AHB-LITE, and add heading,
The information such as type of message, CRC are sent on network by MII/RMII interfaces.The cycle data sent in SRAM is then by piece
CPU module is periodically updated；Inside the same grand cycle, EPA modules are received from other EPA modules also according to linking relationship
The cycle data of transmission, EPA modules can be unpacked to message, judged and cycle data extraction, then again by AHB-
LITE is sent to cycle data in reception SRAM, obtains for CPU module and is further processed.The process of EPA modules for
Each EPA SOC(system on a chip) in network is all suitable for.
Present invention achieves the function such as dynamic configuration, plug and play, the common Ethernet transmitting-receiving of support, so as to widely should
For various industrial occasions.The agreement of the EPA kernels in the present invention is not limited only to based on current EPA agreements, Jing Guoyou
EPA agreements and related sub-protocol after changing, change and expanding is all in covering scope of the present invention.
Although the present invention is disclosed as above with preferred embodiment, it is not for limiting claim, any this area
Technical staff without departing from the spirit and scope of the present invention, can make possible variation and modification, therefore the present invention
The scope that protection domain should be defined by the claims in the present invention is defined.
Claims (14)
1. a kind of EPA SOC(system on a chip), it is characterised in that including EPA modules, CPU module, memory module and ahb bus；It is described
EPA modules, CPU module, memory module connect the ahb bus；
The memory module, to stored messages, and provides read and write access；
The CPU module, to when SOC(system on a chip) is chosen to be master control SOC(system on a chip), obtains configuration configuration message, and by group
State configuration message is handed down to the driven SOC(system on a chip) in network, or, when SOC(system on a chip) is chosen as driven SOC(system on a chip), receive
The configuration configuration message that the master control SOC(system on a chip) is issued；According to network capacity, network topology in the configuration configuration message
Structure and device id, it is determined that the configuration information to the EPA modules, grand cycle, link of the configuration information including EPA modules
The communications slot time span between EPA modules under relation and each linking relationship, the grand cycle is divided into RTE cycle ranks
Section, RTE stages aperiodic, non-RTE stage of communication；
The EPA modules, to the configuration information according to the CPU module configuration configuration is carried out, the RTE phases of the cycles,
It is logical in the non-RTE for communicating with the EPA message datas between the EPA modules under its linking relationship in RTE stages aperiodic
For receiving or sending EPA messages or common ether network packet in the letter stage, and message is parsed, transmitted to the storage
So that the CPU module is read out process in module.
2. EPA SOC(system on a chip) as claimed in claim 1, it is characterised in that in the non-RTE stage of communication, EPA modules are led to
The mode for crossing transmission scanning message scans whole network, receives the common ether network packet responded in network and simultaneously parses, formation group
State configuration message is stored, and configuration configuration message is sent to the new driven SOC(system on a chip) for accessing and carries out group by the CPU module
State is configured, to realize the plug and play of new EPA modules in the case where RTE signal intelligences are not affected.
3. EPA SOC(system on a chip) as claimed in claim 1 or 2, it is characterised in that the configuration configuration message is by host computer
The EPA messages that issue are formed according to common Ethernet packet parsing, or are in non-RTE stage of communication by the EPA modules
The common Ethernet packet parsing of interior reception is formed.
4. EPA SOC(system on a chip) as claimed in claim 1, it is characterised in that also including AHB-LITE, EPA modules are by described
AHB-LITE realizes the data transfer with the memory module, it is ensured that CPU module can be realized being deposited with described by ahb bus simultaneously
The data transfer of storage module.
5. EPA SOC(system on a chip) as claimed in claim 1, it is characterised in that the EPA modules include：EPA nuclear unit, MAC are mono-
Unit, AHB interface unit, network topology management unit and communications interface unit；
The communications interface unit is used for access network；
The MAC unit connects the communication interface, for transmitting EPA messages or common ether network packet, realizes that EPA communicates
Or ethernet communication；
The AHB interface unit, connects ahb bus, for receiving the configuration information of the CPU module；
The EPA nuclear unit, to be configured according to the configuration information, in the different cycles stage MAC unit is gated
The EPA messages of transmission or common ether network packet, are carried out packet parsing and are write in memory module by AHB-LITE.
6. a kind of EPA communication systems, it is characterised in that include：EPA main control ends and EPA driven ends, the EPA main control ends and EPA
Network connection between driven end；
The EPA main control ends, to obtain configuration configuration message, according to network capacity, network in the configuration configuration message
Topological structure and device id, determine the RTE phases of the cycles, RTE stages aperiodic, non-RTE stage of communication and communications slot time span,
Distribute linking relationship according to device id, carry out configuration configuration；The EPA driven ends being handed down to by configuration message in network, in RTE
Enter by respective communications slot time span between EPA driven ends in the phase of the cycles, RTE stages aperiodic and under its linking relationship
Row EPA message datas communicate, and are used to receiving or sending the EPA messages or common ether of EPA driven ends in non-RTE stage of communication
Network packet；Message to receiving carries out dissection process；
The EPA driven ends, to the configuration configuration message for receiving the EPA main control ends corresponding configuration is carried out, in RTE cycle ranks
The respective communications slot time is pressed between EPA main control ends or EPA driven ends in section, RTE stages aperiodic and under its linking relationship
Length carries out EPA message data communications, is used to sending or receiving EPA messages or common Ethernet report in non-RTE stage of communication
Text.
7. EPA communication systems as claimed in claim 6, it is characterised in that also including new EPA driven ends, in network service
Cheng Zhong, inserts network；In the non-RTE stage of communication, EPA main control ends scan whole net by way of sending and scanning message
Network, and the common ether network packet of each EPA driven ends response in network is received, according to the letter in the common ether network packet of response
The configuration information of breath and existing operational network, forms configuration configuration message, according to the new configuration configuration message for obtaining to EPA main control ends
Configuration configuration is carried out and new EPA driven ends between, to realize inserting i.e. for new EPA driven ends in the case where RTE signal intelligences are not affected
With.
8. EPA communication systems as claimed in claim 6, it is characterised in that also including host computer, configuration is issued by network and is matched somebody with somebody
Put message carries out configuration configuration to the EPA main control ends.
9. a kind of EPA communication means, it is characterised in that comprise the following steps：
S1：Host computer issues configuration configuration message into the EPA main control ends by network；
S2：The EPA main control ends obtain configuration configuration message, and the network capacity, network in the configuration configuration message is opened up
Structure and device id are flutterred, the RTE phases of the cycles, RTE stages aperiodic, non-RTE stage of communication and communications slot time span, root is determined
Distribute linking relationship according to device id, carry out configuration configuration, and configuration configuration information is handed down in network by configuration message
EPA driven ends；
S3：The EPA driven ends carry out configuration configuration according to configuration message；
S4：After the completion of configuration, into communications status, within the RTE phases of the cycles, RTE stages aperiodic, according to linking relationship, EPA
EPA messages are carried out between main control end and EPA driven ends or EPA driven ends and EPA driven ends by respective communications slot time span
Data communication, in non-RTE stage of communication, EPA main control ends receive or send the EPA messages or common ether of each EPA driven ends
Network packet.
10. EPA communication means as claimed in claim 9, it is characterised in that in step S4, in non-RTE stage of communication
Interior, EPA main control ends send the mode of scanning message and scan whole network, and receive the common of each EPA driven ends response in network
Ether network packet, the configuration information of information and existing operational network in the common ether network packet of response, forms configuration and matches somebody with somebody
Put message.
11. EPA communication means as claimed in claim 10, it is characterised in that also including step S5：If there is new EPA driven
During the insertion of end, EPA main control ends carry out configuration configuration according to the configuration configuration message of new acquisition to new EPA driven ends, by new EPA from
The linking relationship of moved end is configured to master-slave communication.
12. EPA communication means as claimed in claim 11, it is characterised in that in step S5, EPA main control ends are newly obtained
When obtaining configuration configuration message, the new EPA driven end access networks are determined whether according to existing network capacity, held in network
Amount is the new EPA driven end configuration of IP less than in the case of, and carries out configuration configuration to new EPA driven ends.
13. EPA communication means as claimed in claim 9, it is characterised in that when EPA main control ends close EPA communication patterns,
Switch to common ethernet communication pattern.
14. EPA communication means as claimed in claim 9, it is characterised in that when a network fails, EPA main control ends according to
The cycle message that the RTE phases of the cycles receive judged, positioning failure type, and failure is logical by circular in real time or timing
Report mode is reported；The real-time circular is reported immediately once to there is situation by event message, interrupt mode；Institute
It is to add status data in cycle FRT message in about fixed cycle to be reported to state timing circular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710066480.5A CN106685735B (en) | 2017-02-06 | 2017-02-06 | EPA on-chip system, EPA communication system and communication method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710066480.5A CN106685735B (en) | 2017-02-06 | 2017-02-06 | EPA on-chip system, EPA communication system and communication method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106685735A true CN106685735A (en) | 2017-05-17 |
| CN106685735B CN106685735B (en) | 2019-12-10 |
Family
ID=58860403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710066480.5A Active CN106685735B (en) | 2017-02-06 | 2017-02-06 | EPA on-chip system, EPA communication system and communication method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106685735B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111682994A (en) * | 2020-04-29 | 2020-09-18 | 浙江杰芯科技有限公司 | Annular or linear network system based on EPA protocol and transmission method of non-real-time data |
| CN113271239A (en) * | 2021-07-20 | 2021-08-17 | 浙江国利信安科技有限公司 | Node self-detection method and node equipment for time division multiplexing system |
| CN113364638A (en) * | 2021-08-11 | 2021-09-07 | 浙江国利信安科技有限公司 | Method, electronic device and storage medium for EPA networking |
| CN113422724A (en) * | 2021-08-11 | 2021-09-21 | 浙江国利信安科技有限公司 | Method, device, communication system and storage medium for EPA configuration switching |
| CN113612674A (en) * | 2021-09-30 | 2021-11-05 | 浙江国利信安科技有限公司 | Time division multiplexing communication method for EPA system, EPA device and medium |
| CN116723249A (en) * | 2023-08-11 | 2023-09-08 | 浙江国利信安科技有限公司 | Customized EPA device |
| CN117478501A (en) * | 2023-12-25 | 2024-01-30 | 浙江国利信安科技有限公司 | Method, control device and storage medium for configuration of EPA network |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101572702A (en) * | 2009-05-27 | 2009-11-04 | 大连理工计算机控制工程有限公司 | Method for scheduling high-speed bus master and slave network communication |
| CN104135410A (en) * | 2014-06-20 | 2014-11-05 | 浙江中控研究院有限公司 | EPA (Ethernet for Plant Automation) communication IP (Intellectual Property) core and system on chip (SOC) based on AMBA (Advanced Microcontroller Bus Architecture) bus structure |
| CN204721371U (en) * | 2015-06-18 | 2015-10-21 | 山东万博科技股份有限公司 | A kind of things-internet gateway device being applied to Industry Control |
| US20160231330A1 (en) * | 2013-09-23 | 2016-08-11 | University Of Pittsburgh - Of The Commonwealth System Of Higher Education | Biomarkers related to organ function |
-
2017
- 2017-02-06 CN CN201710066480.5A patent/CN106685735B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101572702A (en) * | 2009-05-27 | 2009-11-04 | 大连理工计算机控制工程有限公司 | Method for scheduling high-speed bus master and slave network communication |
| US20160231330A1 (en) * | 2013-09-23 | 2016-08-11 | University Of Pittsburgh - Of The Commonwealth System Of Higher Education | Biomarkers related to organ function |
| CN104135410A (en) * | 2014-06-20 | 2014-11-05 | 浙江中控研究院有限公司 | EPA (Ethernet for Plant Automation) communication IP (Intellectual Property) core and system on chip (SOC) based on AMBA (Advanced Microcontroller Bus Architecture) bus structure |
| CN204721371U (en) * | 2015-06-18 | 2015-10-21 | 山东万博科技股份有限公司 | A kind of things-internet gateway device being applied to Industry Control |
Non-Patent Citations (1)
| Title |
|---|
| 左振领: "《EtherCAT从站的设计与实现》", 《中国优秀硕士学位论文全文数据库（电子期刊）》 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111682994A (en) * | 2020-04-29 | 2020-09-18 | 浙江杰芯科技有限公司 | Annular or linear network system based on EPA protocol and transmission method of non-real-time data |
| CN111682994B (en) * | 2020-04-29 | 2022-03-29 | 浙江杰芯科技有限公司 | Annular or linear network system based on EPA protocol and transmission method of non-real-time data |
| CN113271239A (en) * | 2021-07-20 | 2021-08-17 | 浙江国利信安科技有限公司 | Node self-detection method and node equipment for time division multiplexing system |
| CN113271239B (en) * | 2021-07-20 | 2021-09-28 | 浙江国利信安科技有限公司 | Node self-detection method and node equipment for time division multiplexing system |
| CN113364638A (en) * | 2021-08-11 | 2021-09-07 | 浙江国利信安科技有限公司 | Method, electronic device and storage medium for EPA networking |
| CN113422724A (en) * | 2021-08-11 | 2021-09-21 | 浙江国利信安科技有限公司 | Method, device, communication system and storage medium for EPA configuration switching |
| CN113364638B (en) * | 2021-08-11 | 2021-11-02 | 浙江国利信安科技有限公司 | Method, electronic device and storage medium for EPA networking |
| CN113612674A (en) * | 2021-09-30 | 2021-11-05 | 浙江国利信安科技有限公司 | Time division multiplexing communication method for EPA system, EPA device and medium |
| CN116723249A (en) * | 2023-08-11 | 2023-09-08 | 浙江国利信安科技有限公司 | Customized EPA device |
| CN116723249B (en) * | 2023-08-11 | 2023-11-10 | 浙江国利信安科技有限公司 | Customized EPA device |
| CN117478501A (en) * | 2023-12-25 | 2024-01-30 | 浙江国利信安科技有限公司 | Method, control device and storage medium for configuration of EPA network |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106685735B (en) | 2019-12-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106685735A (en) | EPA (ethemet for plant automation) on-chip system, EPA communication system and EPA communication method | |
| JP7024047B2 (en) | EtherCAT master-slave integrated bridge controller and control method | |
| CN101018115B (en) | Real time synchronization network based on the standard Ethernet and its operating method | |
| EP1885092A1 (en) | End system scheduling for switched networks | |
| CN105743757B (en) | The method of the free networking of RS485 communicating terminals | |
| CN107703878B (en) | A kind of PLC distributed remote I/O expansion module | |
| CN107276711B (en) | EtherCAT master station device | |
| CN105320632A (en) | Implementation method for high-speed differential bus of autonomous arbitration | |
| CN104899170B (en) | Distributed intelligence platform management bus IPMB connection method and ATCA machine frame | |
| CN102035688B (en) | Design method for rapidly controlling network link access | |
| CN102299788A (en) | Method and device for controlling automatic transmission of IEEE1558 (Institute of Electrical and Electronic Engineers 1558) protocol message | |
| CN101283548B (en) | User interface between FlexRay communications component and FlexRay user and for by the method for this interface message transfer | |
| CN104636301B (en) | A kind of extensive PLC High speed rear panels bus system based on PCI E interfaces | |
| WO2008101394A1 (en) | Real-time synchronous method and synchronous network based on the standard ethernet | |
| CN101449253A (en) | Multi-processor gateway | |
| CN104247354A (en) | Interface device and bus system | |
| CN101650548A (en) | Time setting device for digital substation | |
| CN102253909A (en) | PCI (Peripheral Component Interconnect) interface and data transmission method thereof under FPGA (Filed-Programmable Gate Array) environment | |
| CN110311846A (en) | EtherCAT master-slave system based on IGH Open Framework | |
| CN104135410A (en) | EPA (Ethernet for Plant Automation) communication IP (Intellectual Property) core and system on chip (SOC) based on AMBA (Advanced Microcontroller Bus Architecture) bus structure | |
| CN201860344U (en) | System supporting various fieldbus protocols | |
| CN112929117B (en) | Compatible definable deterministic communication Ethernet | |
| CN105245424B (en) | The method that PROFIBUS DP and PROFINET communication network are interconnected by shared memory | |
| CN106788842B (en) | A kind of processing method and SOC of PTP message | |
| CN201066852Y (en) | Real time synchronization network based on standard Ethernet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20180212 Address after: 310053 Binjiang District, Hangzhou, Hangzhou, Zhejiang Province, No. six and No. 309 F16 Applicant after: Zhejiang Jay core technology Co., Ltd. Address before: 310053 Hangzhou Province, Binjiang District Province, No. six and No. 309 Road, the center of science and Technology Park (high tech Zone) () Applicant before: Zhejiang Supcon Research Co., Ltd. |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |