CN103885821B - SCADA pre-procesors and its Multi-channel multi-line journey real-time scheduling method - Google Patents

Abstract

A kind of SCADA pre-procesors and its Multi-channel multi-line journey real-time scheduling method, each class standard intelligent terminal and equipment of the manufacturer that extensively can plug into, possess " protocol conversion " the i.e. function of gateway；In addition to data acquisition, forwarding, the various additional functions of automated system are disclosure satisfy that；The configuration of single front-end processor system, double front end processor tolerant system or double front end processor dual network tolerant system is carried out as needed can；Employ current advanced embedded software hardware technology.The present invention also includes a kind of Multi-channel multi-line journey real-time task scheduling method, and network performance is excellent, and reliability is high, real-time and good stability, and faster system response is prompt, and the efficiency processed when data acquisition, order control are with school is increased dramatically.

Description

SCADA pre-procesors and its Multi-channel multi-line journey real-time scheduling method

Technical field

The present invention relates to data acquisition and supervisor control, especially a kind of SCADA pre-procesors and its lead to more Road multithreading real-time scheduling method, the Multi-channel multi-line journey processed when data acquisition, order control and school that the device is adopted Real-time task scheduling method, belongs to automatic measure control and communication technical field.

Background technology

SCADA (Supervisory Control And Data Acquisition) system, i.e. data acquisitions and monitoring Control system.

Pre-procesor is widely used at present as SCADA system data acquisitions and the channel and bridge of forwarding Industry in the Industrial-Type such as electric power, communication, metallurgy, coal, oil field, chemical industry, manufacture, traffic, environment, water conservancy enterprise field is automatic Change in monitor control system.At present, traditional pre-procesor is front end processor, typically adopt " industrial computer+operating system+ The platform model of SCADA softwares+database ", realize single data acquisition, in short-term storage and superior carry out communication forwarding Function；And single front-end processor system, double front end processor tolerant systems or double front end processor dual networks can be constituted according to the needs of application Tolerant system.

Although industrial control computer is higher in the aspect standard such as components and parts, mainboard and apparatus structure, than hardware set Into the integrated preposition processing meanss such as embedded device of Du Genggao, its stability and reliability are low.Industry Control is calculated Machine carries out preposition process by installing Windows or Linux desktop operating systems and SCADA softwares, and desktop operated system System is often very huge, and committed memory resource is larger, and CPU expenses are also larger, and security is poor, This further reduces which stable Property and reliability；In addition, the real-time of desktop operating system is poor, this causes traditional pre-procesor real-time general, Operational efficiency is relatively low.

At present, the existing present invention is similar to the report of relevant apparatus content both at home and abroad, but is limited primarily to a certain professional domain One professional application（For example, the D20, the RTU560 of ABB of the representative products GE Harris of power industry application）.These equipment Poor in terms of the compatibility of agreement and access device, function is also relatively simple, to the self-defined logical of domestic automation equipment News are processed with configuration with very strong repellency；In addition, the real-time response side processed at data acquisition, order control and school Face, the performance of systems soft ware are poor, often higher to remotely accessing the hardware requirement of computer.

In recent years, with the development of the new technology such as communication, observing and controlling, embedded, traditional realizes single data acquisition and turns The pre-procesor for sending out function can not meet the development of current automatic technology.At present, pre-procesor again quilt sometimes Referred to as master unit is controlled at station, in addition to undertaking data acquisition, forwarding, it is necessary to realize the various additional work(that Institute of Automation is needed Can, such as logic blocking, judgement, WEB is browsed, a distant place is adjusted, and the support to Ethernet is also more and more important.It is even more important , to same automation projects, the smart machine of different vendor is usually faced, due to the mark of current synthetic automatic device Quasi-ization degree is not high, even for the equipment of same manufacturer, it is often necessary to process different communications protocol, traditional function list Once RTU or pre-procesor seem helpless in this respect.This is in the urgent need to the pre-procesor of a new generation Possess the function of " protocol conversion ", that is, " gateway " function of often saying.

The content of the invention

Not good in order to overcome the shortcomings of prior art single function and performance, reliability, compatibility, the present invention provides one SCADA pre-procesors are planted, and the Multi-channel multi-line journey adopted by the system core data pre-procesor is adjusted in real time Degree method.

The technical solution adopted for the present invention to solve the technical problems is：SCADA pre-procesors, by MPC8313CPU core boards and interface expansion board composition, wherein, core board adopts built-in Linux real time operating system, connects Mouth expansion board includes that power interface, indicator lamp interface, operation keystroke interface, keyboard interface, LCD display interfaces, main RS485 connect Mouth I, main RS485 interfaces II, RS485 address configuration interface, CAN EBI I, CAN EBI II, RJ45 networks Interface I, RJ45 network interface II, RS422 interface I, RS422 interface II, RS232 interface, USB interfaces, described is preposition Processing meanss adopt active and standby double-channel fault tolerant pattern.

The invention adopt another scheme that the Multi-channel multi-line journey Real-Time Scheduling side that SCADA pre-procesor applications are provided Method, the method run on pre-procesor runtime（SFURunsystem）, comprise the steps of：

A. pass through pre-procesor configuration module（SFUConfig）Configuration pre-procesor, network, connection equipment with The parameter of system etc.；

B. pass through network equipment module（NetworkMachine）All connection equipment and network in network system are entered Row real-time management；

C. simultaneously, by system call threading models（SystemScheduleThread）Each system thread is adjusted Degree；

D. pass through active and standby pre-procesor（FrontUnitObj）Object module carries out the data of fieldbus or equipment Collection, and when implementing the order control to fieldbus or equipment and school；

E. protocol forward device module（ProtocolDeliver）With various protocols compatible mode, by Ethernet with connect The superior system for entering carries out bidirectional data communication.

Wherein, described pre-procesor runtime（SFURunsystem）Based on double-channel fault tolerant pattern, gather Passage is separated with forwarding channel, supports that multichannel I/O equipment communications are fault-tolerant, and is capable of achieving double pre-procesor active-passive fault tolerances With dual network active-passive fault tolerance.

Wherein, described network equipment module（NetworkMachine）In the network system for being managed, connection equipment is also wrapped Include pre-procesor.

Wherein, described system call threading models（SystemScheduleThread）Using preemption scheduling method.

Compared with traditional pre-procesor or station control master unit, the design of this device is based on current automated system Common-mode, in addition to data acquisition, forwarding, disclosure satisfy that various additional functions such as logic blocking, judgement, WEB are browsed, far Side adjusts the needs for waiting, and the compatibility of agreement and access device is more preferable, and possesses " protocol conversion " the i.e. function of gateway；This device As a result of efficient embedded real-time operating system, and high-performance, highly reliable MPC chips, hardware integration degree is high, Network performance is excellent, thus the real-time of system is with stability more preferably, and reliability is higher.In SCADA systems, realize with it is outer Portion's equipment or system independent data exchange the set of the interrelated logic part of (communicating), referred to as one passage.What the present invention was announced Multi-channel multi-line journey real-time task scheduling method, is processed when greatly improving the data acquisition of this device, order control and school

Efficiency so that this device system response it is faster, real-time is more preferable.

The invention has the beneficial effects as follows, the SCADA system core data pre-procesors of the present invention can lift data The efficiency processed when collection, order control and school, improves real-time, reliability, stability and the system responding ability of system, expands The compatibility of exhibition industry standard communication protocols and access device；Except the networking fault tolerance that disclosure satisfy that traditional pre-procesor Outside data acquisition and forwarding capability, the device can also meet the needs of the various additional functions of automated system, possess " association View conversion " the i.e. function of gateway；Using the Multi-channel multi-line journey real-time task scheduling method of the present invention, this device is greatly improved The efficiency processed when data acquisition, order control and school so that the system response of this device is faster, and real-time is more preferable.

Description of the drawings

Fig. 1 is SCADA pre-procesors circuit structure block diagram of the present invention.

Fig. 2 is the Multi-channel multi-line journey real-time task scheduling method adopted by SCADA pre-procesors of the present invention Flow chart.

Fig. 3 is the network topological diagram of SCADA pre-procesors typical case application of the present invention.

Specific embodiment

The present invention is further described with reference to the accompanying drawings and examples.

As shown in Fig. 1, SCADA pre-procesors, by interface expansion board and using built-in Linux real-time operation The CPU core boards 1 of system are constituted, wherein, core board 1 adopts built-in Linux real time operating system, interface expansion board bag Include power interface 2, indicator lamp interface 3, operation keystroke interface 4, keyboard interface 5, LCD display interfaces 6, RS485 address configurations Interface 9, RS232 interfaces 16, USB interfaces 17, described pre-procesor also include；The master of active and standby double-channel fault tolerant pattern RS485 interfaces I 7, main RS485 interfaces II 8, CAN EBIs II 10, CAN EBIs I 11, RJ45 networks connect Mouth II 12, RJ45 network interfaces I 13, RS422 interfaces II 14, RS422 interfaces I 15.

The pre-procesor of the present invention employs embedded software hardware technology, including being grasped using built-in Linux in real time Make system, and the design and development that core board 1 and interface expansion board are carried out based on the MPC8313 CPU of Freescale. Interface of the circuit realiration of pre-procesor using big backboard platelet, the advantage of this kind of interface is that core board is detachable, convenient Safeguard and keep in repair, be convenient for code upgrade.The functional realiey of circuit with reference to shown in Fig. 1, pre-procesor adopt binary channels Fault-tolerant mode, the dispatching method launch also based on double-channel fault tolerant pattern.Here passage is defined as connecing by certain mode Enter pre-procesor and independently carry out the set of the logic entity and its communication component of data exchange.It is said differently, front Put in processing meanss SCADA system, the interrelated logic part that realization is exchanged (communicate) with external equipment or system independent data Set, referred to as one passage.Because at least there are two entities in communication itself：" master " (Master) and " from " (Slave), because This, passage can be divided into by pre-procesor according to its status in communication：

(1) acquisition channel：In " master " position of communication；

(2) forwarding channel：In " from " position of communication.

No matter which kind of passage, all at least constitutes with following three：

(1) communication media：As the transmission media of communication signal；

(2) communication protocol：It is the language for realizing communication two party dialogue (data and order are exchanged)；

(3) port：The physical or logical interface that communication media is connected with computer.

The RJ45 network interfaces of pre-procesor are defined as forwarding fault-tolerant passage, CAN EBIs, RS485 to connect Mouthful, RS422 interfaces may be selected to be defined as to gather fault-tolerant passage, RS232, USB interface be then defined as pre-procesor configuration, The communication port of debugging.This defining mode causes the pre-procesor to support that multichannel I/O equipment communications are fault-tolerant, and Double pre-procesor active-passive fault tolerances and dual network active-passive fault tolerance can conveniently be realized.

It is of particular importance that as the acquisition channel of the pre-procesor is separated with forwarding channel.Acquisition channel is adopted With the abstract access I/O device drivers of passage, protocol extension is flexible；Acquisition channel is supported to compare allusion quotation both at home and abroad at present The industrial field bus and standard communication protocol of type, including CAN, ModBus, LonWorks, POLLING, CDT, DNP etc..Forwarding Passage accesses forwarding unit driver using passage is abstract, you can realize（Remotely）" data transmit-receive " function, is capable of achieving again（This Ground）" protocol conversion " function；Forwarding channel supports the agreement being most widely used at present：TCP/IP, ModBus/TCP and OPC.

The operation keystroke interface 4,5 of the pre-procesor, and LCD display interfaces 6 are then used for extending and meet each The needs that kind of additional function is realized, such as logic blocking, judgement, WEB is browsed, a distant place is adjusted.

Present invention also offers runtime SFURunsystem of above-mentioned SCADA pre-procesors carries out data adopting Collection, the order control Multi-channel multi-line journey real-time task scheduling method adopted with process during school, including following 5 big function moulds Block, as shown in Fig. 2 flow charts.

(1) SFUConfig：Pre-procesor configuration module；

(2) FrontUnitObj：Active and standby pre-procesor object module；

(3) NetworkMachine：Network equipment module；

(4) SystemScheduleThread：System call threading models；

(5) ProtocolDeliver：Protocol forward device module.

The thread dividing that the operation of above-mentioned module is related to is different priorities by the Multi-channel multi-line journey real-time scheduling method, System obtains the right to use of CPU according to the priority of thread, i.e., using preemption scheduling method.

The kernel thread that the Multi-channel multi-line journey real-time scheduling method is related to mainly includes：

(1) system call thread SystemScheduleThread, includes following sub-line journeys again：

Variable arranges thread CSetTagValueThread,

Control thread CControlThread,

Process thread CProcessThread.

(2) data acquisition thread CDataAcquisThread.

(3) order thread TimeAdjustThread during school.

(4) the thread CRemoteControlThread of guidance command.

The Multi-channel multi-line journey real-time scheduling method by data acquisition and school when, control is strictly diverted into by uplink and downlink Row is processed.Data acquisition is deployed in FrontUnitObj modules, relatively bottom with thread during school, to improve data acquisition Real-time and uniformity；Guidance command thread is deployed in NetworkMachine nucleus modules, to improve network system and equipment Security reliability.

Due to gathered data processing information amount greatly, it is special in SystemScheduleThread system call threading models Deployment variable arranges thread, is combined with the data acquisition thread disposed compared with bottom, it is possible to achieve at a large amount of concurrent real time datas Reason, carries out the efficiency of real time data processing so as to greatly improve pre-procesor.Other control threads and process thread By arranging thread with the variable in SystemScheduleThread system call threading models, and System kernel module in NetworkMachine network equipment modules is directly associated, and can obtain concurrent event with report The control process such as alert, so as to substantially reduce the response time of the control process such as event and warning.

Acquisition channel is separated with forwarding channel, corresponds to the CProtocolEntry interfaces of FrontUnitObj modules respectively With ProtocolDeliver modules.CProtocolEntry adopts the abstract access I/O device drivers of passage, agreement to expand Exhibition is flexible；ProtocolDeliver modules access forwarding unit driver using passage is abstract, you can carry out data Transmitting-receiving（Containing long-range）, " protocol conversion " function is capable of achieving again.

The function and implementation method of above-mentioned 5 big functional module is described below：

1.SFUConfig

Pre-procesor operation before, need by SFUConfig carry out pre-procesor, network, connection equipment with The parameter configuration of system etc..Following function is realized mainly：

（1）Device softdog is configured（The mark such as gateway customer access right, dual network, two server is set）；

（2）Two-channel switching is configured and is managed（Need initial setting up）；

（3）The configuration and management of intelligence screen or mimic panel（Need initial setting up）；

（4）Acquisition channel list configuration, forwarding channel list configuration；

（5）The list configuration of communication protocol and COM1；

（6）List of devices is configured；

（7）System variable is arranged；

（8）The related variable dictionary definition of current runtime.

2.FrontUnitObj

Active and standby pre-procesor object module FrontUnitObj is the main operation module of pre-procesor, is born Duty carries out the data acquisition of fieldbus or equipment, and when implementing the order control to fieldbus or equipment and school.Should Module mainly realizes following SCADA functions：

（1）By communication port interface CChannelEntry and communication protocol driving interface CProtocolEntry reality Now I/O equipment, communication port and the data communication protocol to being accessed drives and is managed.Wherein CProtocolEntry connects Following functions mouthful are provided or data link table the I/O equipment for being accessed is controlled, school when, and data are carried out to these equipment Collection：

Control command interface function ControlCmdEntry (..)；

Interface function AdjustTimeEntry (..) during school；

Data acquisition interface function DataAcquisitionEntry (..)；

SOE information (SOE chained lists) SOEList；

Real-time data collection queue RTDBItemList.

（ 2 ）Data acquisition thread is waken up when the I/O equipment of pre-procesor and its access starts

CDataAcquisThread, carries out data acquisition to the I/O equipment that CProtocolEntry interfaces are accessed, And gathered data is uploaded to SystemScheduleThread modules；

（3）Thread when waking up school when the I/O equipment of pre-procesor and its access starts TimeAdjustThread, receive from NetworkMachine module schools when function school when order, pass through CProtocolEntry interfaces are calibrated to the I/O equipment of pre-procesor, network system and access；

（4）Receive from NetworkMachine module control command threads using RemoteControl (..) function Control command, is controlled to pre-procesor and network system by CProtocolEntry interfaces, to the I/O for accessing Equipment is remotely controlled operation.

3.NetworkMachine

Pre-procesor system initialization starts network equipment module NetworkMachine.The module is responsible for net All connection equipment in network system（Containing pre-procesor）Real-time management is carried out with network.Following function is realized mainly：

（1）System kernel process.Following network system function is realized by system kernel module CSystemKernel：

Front end processor connects, and realizes that the switching to active/standby pre-procesor connects；

Front end processor handover request thread, realizes the handover request of pre-procesor；

Front end processor handover request response thread, realizes the response to pre-procesor handover request；

Device request processes thread (the machine give out a contract for a project thread), the network bag of processing equipment request；

The thread (locally received thread) of the machine message is processed, reception processing is carried out to the network bag that equipment sends；

Active and standby network monitoring object, intercepts to active and standby network；

Statistics connected device table, carries out Hashing Map process to connected device table.

（2）During plant stand school.By function AdjustFactoryTime (..) during plant stand school, to FrontUnitObj modules Directly issue school when order, or forwarding from system school when function AdjustTime (..) school when order；

（3）Straighforward operation.Network device initiating startup is set to the I/O of pre-procesor, network system and access The standby thread CRemoteControlThread for being remotely controlled order.By the thread, directly send out to FrontUnitObj modules Cloth control command, or forwarding is from the remote control command of system remote control function RemoteControl (..).

4. SystemScheduleThread

Pre-procesor system initialization starts SystemScheduleThread system call threading models.Should Module mainly realizes the scheduling to following system threads：

（1）Variable arranges thread CSetTagValueThread.The real-time processing of the equipment of carrying out or system variable value, before being Put the core of processing meanss real time data processing and scheduling.Major function includes：

The gathered data of the standard access I/O equipment from FrontUnitObj modules is received, and these data are entered Row is processed；

The service data of pre-procesor, network system and equipment is processed；

Data after process are uploaded to into ProtocolDeliver by system data acquisition function DataAcquis (..) Module.

（2）Control thread CControlThread, realizes following thread function：

Two-channel switching thread, the active-standby switch for carrying out pre-procesor are processed；

Network Check thread, to the equipment in network system（Including pre-procesor）It is attached process；

Event prints thread, if there is event handling, then prints event information；

Call alerts thread, if there is warning message, is then classified（Three-level）Alert process, and print alarm signal Breath.

（3）Thread CProcessThread is processed, following thread function is realized：

Variable logs in thread, and the real-time data base for carrying out variate-value is processed；

Backstage language active thread, runs backstage language, including the process for carrying out service condition and running.

5.ProtocolDeliver

Protocol forward device module ProtocolDeliver is led in the form of TCP/IP, ModBus/TCP or OPC agreement Crossing Ethernet carries out bidirectional data communication with the superior system such as distant place master control system, Enterprise MIS for being accessed and intelligent screen etc.. The module is implemented as follows function：

（1）Receive the Real-time Collection letter of the I/O equipment for being accessed from data acquisition function DataAcquis (..) Breath, carries out communication Protocol Conversion by the protocol configuration standard of output data." protocol conversion " function is realized；

（2）Receive from the pre-procesor of data acquisition function DataAcquis (..), network system and equipment etc. Runtime data, carry out communication protocol packing by the protocol configuration standard of output data." protocol packing " function is realized；

（3）By the data of " protocol conversion " and " protocol packing ", superior system sends in real time or forwards（Containing long-range）.I.e. Realize " real time data forwarding "（Containing long-range）Function；

（4）Communication protocol unpacking will be carried out with control command during school from superior system, that is, realize " agreement unpacking " work( Energy.Then, it is handled as follows, realizes " real time data reception "（Containing long-range）Function：

For when being distributed to the school of pre-procesor and network system and control command, by function during system school AdjustTime (..) and system remote control function RemoteControl (..), the data form set by internal system are directly sent out Cloth gives NetworkMachine modules；

For the I/O equipment for being distributed to access school when and control command, then need first by access I/O equipment drive Dynamic consensus standard carries out " protocol packing ", then by function AdjustTime (..) and system remote control function during system school RemoteControl (..), is distributed to NetworkMachine modules with control command during high-ranking officers.

（5）The transmitting-receiving of real time data（Containing long-range）Function, is provided by WEB services.

Below, with reference to the network topology application of Fig. 3 representative instances, describe pre-procesor of the present invention in detail Specific embodiment.

Efficient SCADA system core data pre-procesors of new generation of the present invention, as Department of Industrial Automation The SCADA preprocessors of the local scene or Monitoring and Controlling center remote of system, function implementation are as follows.

（1）System equipment is accessed：

The acquisition channel defined by RS232/RS485/RS422 serial line interfaces, accesses standard industry fieldbus and I/ O equipment；

The forwarding channel defined by RJ45 Ethernet interfaces, the higher level plugged in Internet/Intranet networks System or equipment.

（2）Real-time data acquisition：By real-time data acquisition thread, by CAN, ModBus, LonWorks,

The industry standard communication protocols such as POLLING, CDT, DNP, concurrently enter to the multiple equipment that above-mentioned acquisition channel is accessed Row real-time data acquisition.

（3）Real time data processing：Multi-thread concurrent data processing is carried out to gathered data, including the event of carrying out, scope of a variable With variate-value, and the process of alarm threshold value etc..

（4）Control command：

By control command thread, by TCP/IP, ModBus/TCP or OPC standard communication protocol, concurrent receipt from The control command of the superior system or equipment of above-mentioned forwarding channel；

If control command is to this front end processor, that is, perform the control operation to this front end processor；Otherwise, by destination address The downward distribution of order is controlled to acquisition channel directly.

（5）Order during school：

By TCP/IP, ModBus/TCP or OPC standard communication protocol, the higher level from above-mentioned forwarding channel is directly received Order during the school of system or equipment；

If order is to this front end processor, that is, when performing the school to this front end processor during school；Otherwise, pass through by destination address During school, order thread is concurrently calibrated the downward distribution of order to acquisition channel.

（6）Gateway function（Protocol conversion, data forwarding）：

Acquired original data and real time data processing result are converted to into higher level TCP/IP, ModBus/TCP or OPC association The packet of view, then up level system or equipment forwarding；

By control with the packet that is converted to the corresponding I/O standard communication protocols of subordinate's destination address equipment is ordered during school, Then to subordinate's system or equipment forwarding.

The pre-procesor can be with flexible networking.Fieldbus and equipment are accessed and can adopt single channel or active and standby Binary channels switches fault-tolerant mode；Pre-procesor can adopt unit or active and standby Two-channel switching fault-tolerant mode, Internet/ Intranet networks may also be employed single network or active and standby dual network switching fault-tolerant mode.Three kinds of fault-tolerant modes can be according to reality Situation is combined.

Fig. 3 environment and ground calamity monitoring application case：The pre-procesor is placed in remote monitoring center, total with scene Line and field apparatus are communicated by RTU devices.Plant running is using double front end processor, binary channels, the monitoring of dual network active-standby switch Pattern.

Fig. 3 building hoists/crane production monitoring：The pre-procesor is placed in fieldbus and equipment is local Scene, is directly communicated with fieldbus and field apparatus.Plant running is using single front end processor, single channel and dual network active-standby switch Monitoring mode.

Fig. 3 transformer stations are comprehensive from/power scheduling/generating protection monitoring：The pre-procesor is placed in fieldbus and sets Standby local scene, is directly communicated with fieldbus and field apparatus.Plant running is using single front end processor and binary channels, dual network master The monitoring mode of standby switching.

According to practical situations and needs, above-mentioned monitoring mode flexibly can be changed.

Claims (4)

1. a kind of Multi-channel multi-line journey real-time task scheduling method of SCADA pre-procesors application, it is characterised in that the party Method runs on pre-procesor runtime（SFURunsystem）, the pre-procesor runtime is by preposition process dress Put configuration module（SFUConfig）, active and standby pre-procesor object module（FrontUnitObj）, network equipment module （NetworkMachine）, system call threading models（SystemScheduleThread）With protocol forward device module （ProtocolDeliver）Five parts constitute, and described method is comprised the steps of：

A. pass through pre-procesor configuration module（SFUConfig）Configuration pre-procesor, network, connection equipment and network The parameter of system；Standard industry fieldbus and Ethernet that described network is accessed for pre-procesor, described connection Equipment is that pre-procesor accesses the I/O equipment of standard fieldbus connection and the higher level equipment of Ethernet connection of plugging into, institute The superior system in Internet/Intranet networks that the network system stated is plugged into for pre-procesor；Should In Internet/Intranet networks, superior system includes that distant place master control system, Enterprise MIS and intelligence are shielded；

B. pass through network equipment module（NetworkMachine）To the pre-procesor described in step A, network, connection equipment Real-time management is carried out with network system；

C. simultaneously, by system call threading models（SystemScheduleThread）Variable arrange, control with process line Journey is to pre-procesor runtime（SFURunsystem）Interior active and standby pre-procesor object module （FrontUnitObj）Data acquisition thread and school when thread and network equipment module（NetworkMachine）Remote control Order thread is scheduled；

D. pass through active and standby pre-procesor（FrontUnitObj）Object module carries out the data acquisition of fieldbus or equipment, And when implementing the order control to fieldbus or equipment and school；

E. protocol forward device module（ProtocolDeliver）With various protocols compatible mode, by Ethernet with accessed Superior system carries out bidirectional data communication, and the Ethernet includes distant place master control system, Enterprise MIS with the superior system for being accessed With intelligent screen.

2. method according to claim 1, it is characterised in that described pre-procesor runtime （SFURunsystem）Based on double-channel fault tolerant pattern, acquisition channel is separated with forwarding channel, supports multichannel I/O equipment communications It is fault-tolerant, and it is capable of achieving double pre-procesor active-passive fault tolerances and dual network active-passive fault tolerance.

3. method according to claim 1, it is characterised in that described network equipment module（NetworkMachine）Institute In the network system of management, connection equipment also includes pre-procesor.

4. method according to claim 1, it is characterised in that described system call threading models （SystemScheduleThread）Using preemption scheduling method.