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CN106647412B - A kind of data sharing method between distributed director based on configuration element - Google Patents

A kind of data sharing method between distributed director based on configuration element Download PDF

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Publication number
CN106647412B
CN106647412B CN201710035217.XA CN201710035217A CN106647412B CN 106647412 B CN106647412 B CN 106647412B CN 201710035217 A CN201710035217 A CN 201710035217A CN 106647412 B CN106647412 B CN 106647412B
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shared
data
configuration
input
distributed director
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CN106647412A (en
Inventor
郑松
刘朝儒
陈松彬
林旭
熊华锋
黄碧琴
李贝贝
郑蓉
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Sap (fujian) Technology Co Ltd
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Sap (fujian) Technology Co Ltd
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    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05BCONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00Programme-control systems
    • G05B19/02Programme-control systems electric
    • G05B19/04Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/02Details
    • H04L12/16Arrangements for providing special services to substations
    • H04L12/18Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/01Protocols
    • H04L67/10Protocols in which an application is distributed across nodes in the network
    • H04L67/104Peer-to-peer [P2P] networks
    • H04L67/1074Peer-to-peer [P2P] networks for supporting data block transmission mechanisms
    • H04L67/1078Resource delivery mechanisms
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/01Protocols
    • H04L67/10Protocols in which an application is distributed across nodes in the network
    • H04L67/1095Replication or mirroring of data, e.g. scheduling or transport for data synchronisation between network nodes

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Programmable Controllers (AREA)

Abstract

The present invention provides the data sharing method between a kind of distributed director based on configuration element, shared drive is set in each distributed director, by shared element, determine which data enters shared drive, and synchronous with other distributed director nodes progress data;The shared element is directly associated with distributed director I/O channel, the internal data store of the shared element shared drive region specified in corresponding distributed director;The configuration programming process of control logic is directly participated in, the real value of shared element is dynamically presented in configuration picture, realizes the acquisition and output to specified shared data by shared element;The shared data of each distributed director node is synchronized to corresponding shared drive memory block in other nodes by way of broadcast communication.The present invention effectively improves the degree of flexibility of data sharing between controller, can also reduce influence of the unnecessary data sharing to grid load, controller performance.

Description

A kind of data sharing method between distributed director based on configuration element
Technical field
The present invention relates to technical field of industrial automatic control more particularly to a kind of distributed AC servo systems based on configuration element Data sharing method between device.
Background technique
Complex industrial control system, which generallys use the distributed network architecture, spot sensor, controller and actuator Effect ground set, so that resource-sharing and cooperating may be implemented between the work station of different address in region.Since complexity is The control problem of system is complicated, controller node is various, each object how to be geographically distributed using distributed communication network realization Between reason control unit information and control signal it is effectively shared be the field face a major issue.It is asked for this Topic, existing control system often for user-friendly interface the considerations of, the code tasks of data sharing can be masked, only Engineer provides the function of control application development.However as control system function increasingly complex, parallel program development Etc. new demands appearance, control engineers problem of concern changed, they are not only concerned about control algolithm Data synchronization and its communication efficiency of complex control program are also extremely focused in the exploitation of the controls application such as design and configuration.
For the data sharing between distributed director, configuration provided by control system's development quotient is soft in the prior art Part tool is usually using all global variables and its real time data between the technological means local area network internal controller of broadcast communication Data synchronization updating is executed, the major defect of this mode is:
1, there are many unnecessary network communications, especially for complicated control task and parallel control task, Improperly brought problem is that volume of transmitted data increase causes network delay to increase after data sharing between extensive control node, The decline of system entirety control performance is in turn resulted in, real-time reduces, or even influences the normal operation of control system.
2, the functional module of data sharing has been previously integrated in configuration software, and engineer can only be by specifying specific net Section or the IP address of controller node configure to intervene data sharing, operate autonomy and flexibility is still undesirable.
Summary of the invention
The technical problem to be solved in the present invention is to provide the number between a kind of distributed director based on configuration element According to sharing method, solves engineer in the prior art and be difficult to the data sharing strategy between flexible configuration distributed director, with And the data sharing between controller influences big technical problem on grid load, controller performance;Effectively improve control The degree of flexibility of data sharing between device can also reduce unnecessary data sharing to the shadow of grid load, controller performance It rings.
The present invention is implemented as follows: the data sharing method between a kind of distributed director based on configuration element, Shared drive is set in each distributed director, by shared element, determines which data enters shared drive, and and its It is synchronous that his distributed director node carries out data;The shared element is directly associated with distributed director I/O channel, is shared The internal data store of the element shared drive region specified in corresponding distributed director;Shared element has by graphic elements The mode of sequence connection, directly participates in the configuration programming process of control logic, and the real value of shared element is dynamically presented on configuration In picture, the acquisition and output to specified shared data are realized by shared element, and shared data is transparent, can monitor on-line; The shared data of each distributed director node is synchronized to corresponding shared interior in other nodes by way of broadcast communication Deposit memory block.
Further, the configuration element is the control function module for executing analog quantity or amount of logic operation, multiple element Between orderly connection form the Logical Configuration program of system, different types of element is distinguished by component symbol mark, more The element of a same type is distinguished by element lower label;The configuration element includes input element, output element, strategic element And shared element;The input element, output element, strategic element are for writing conventional Logical Configuration program;It is described total Enjoying element includes shared input element and shared output element.
Further, the shared input element and shared output element: including analog input/output element, number Word amount input/output element, intermediate analog quantity input/output element and sandwich digit amount input/output element;The intermediate die Analog quantity/digital quantity input element is located at input side, and internal data can be transferred to strategic element or output element;The intermediate die Analog quantity/digital output element is located at outlet side, for reading and storing the calculated result of intermediate logic;The shared input member Part and shared output element: the editor that Logical Configuration program is participated in Logical Configuration picture can be added to;Logical Configuration program When operation, the real time data of itself can be dynamically shown in configuration picture;During Logical Configuration, similar element Unique lower label will be automatically generated.
Further, the shared input/output element is the I/O channel pass that controller is corresponded to industrial control system Connection, and it is corresponding with physics shared drive address specific in controller;By sharing input/output element, operator's energy It automatically selects specific data to be loaded into shared drive, and carries out data interaction with other distributed directors;It is described share it is defeated Enter/output element and common input/output element be managed and distinguish in the way of subregion in Memory Allocation storage, Each subregion opens up corresponding storage region in controller memory and is corresponding to it.
Further, the data sharing mode in controller layer between multiple distributed directors is as follows: to each controller Node configures global sharing memory region, and the global sharing memory region includes the shared number of all distributed director nodes It is believed that breath, i.e., global memory's shared region of each controller node had both included the shared data that local node provides, and also included Shared data from other nodes;
By the way of physical memory unified addressing, global memory's shared region of all distributed directors is determined Justice;The data synchronization strategy of the shared drive is the shared data of each controller node by the way of broadcast communication, together It walks in other nodes in the corresponding physical memory addresses of global memory's shared region, is performed simultaneously periodic data and refreshes behaviour Make.
Further, shared data is by sharing input element from the shared of corresponding distributed director in the method It is obtained in memory, specifically: S1, editorial logic configuration program determine the configuration element M for needing to receive shared data;
S2, the configuration mode orderly connected using graphic elements drag shared input element to Logical Configuration picture, connection Into the configuration element M;
The related information of S3, the configuration shared input element, with being linked to the specified shared drive of corresponding controller On location;
S4, operation logic configuration program periodically read Real-Time Sharing number from the specified shared drive address According to dynamically updating in Logical Configuration picture, and its real value is shown in the side of shared input element.
Further, shared data is to be written to corresponding distributed director by shared output element in the method Shared drive corresponding region, specifically: S1, editorial logic configuration program, selection needs the configuration element N of shared data, by it Output data is as shared data;
S2, the configuration mode orderly connected using graphic elements drag shared input element to Logical Configuration picture, connection Into the configuration element N;
S3, the related information for configuring shared output element, are linked on the specified shared drive address of corresponding controller;
The real time data of shared output element is transmitted and stores described specified be total to by S4, operation logic configuration program Enjoy memory address;
S5, the shared data in the specified shared drive address is periodically synchronized to other controller node phases The region of memory answered.
The present invention has the advantage which controller 1, engineer can autonomously decide on, which data participates in distribution Formula data sharing, so that the network load caused by being effectively prevented from because of improperly data sharing increases, control performance significantly drops The problems such as low;
2, data sharing operations simple and flexible meets the configuration programming habit of engineer, and communication data highly transparent, Visualization is high, supports on-line monitoring.
Detailed description of the invention
The present invention is further illustrated in conjunction with the embodiments with reference to the accompanying drawings.
The schematic diagram of data sharing method of the Fig. 1 between distributed director of the invention.
Fig. 2 is the acquisition methods flow diagram of shared data of the present invention.
Fig. 3 is the output method flow diagram of shared data of the present invention.
Specific embodiment
Shown in please referring to Fig.1 to Fig.3, a kind of data sharing method between the distributed director based on configuration element, Shared drive is set in each distributed director, by shared element, determines which data enters shared drive, and and its It is synchronous that his distributed director node carries out data;The shared element is directly associated with distributed director I/O channel, is shared The internal data store of the element shared drive region specified in corresponding distributed director;Shared element has by graphic elements The mode of sequence connection, directly participates in the configuration programming process of control logic, and the real value of shared element is dynamically presented on configuration In picture, the acquisition and output to specified shared data are realized by shared element, and shared data is transparent, can monitor on-line; The shared data of each distributed director node is synchronized to corresponding shared interior in other nodes by way of broadcast communication Deposit memory block.
A kind of design method of shared element towards configuration data of the invention, is patrolled for connecting the control that user writes Collect the shared drive with corresponding controller.
Concrete function feature is as follows:
1, the configuration element is the control function module for executing analog quantity or amount of logic operation, having between multiple element Sequence connects the Logical Configuration program to form system, and different types of element is distinguished by component symbol mark, multiple same types Element distinguished by element lower label.The configuration element includes input element, output element, strategic element and shared member Part.The input element, output element, strategic element are for writing conventional Logical Configuration program.The shared element is one The special configuration element of kind, including shared input element and shared output element.
2, the identical point of the shared input/output element and common input/output element:
1. including analog input/output element, digital quantity input/output element, intermediate analog quantity input/output member Part and sandwich digit amount input/output element;Intermediate analog quantity/digital quantity the input element is located at input side, can will be internal Data are transferred to strategic element or output element;Intermediate analog quantity/digital output the element is located at outlet side, for reading With the calculated result of storage intermediate logic.
2. can be added to the editor for participating in Logical Configuration program in Logical Configuration picture;
3. Logical Configuration program is run, the real time data of itself can be dynamically shown in configuration picture;
4. similar element can all automatically generate unique lower label during Logical Configuration;
For example, No. 101 adder calculator element is represented by ADD 101, corresponding controller will also distribute for it Corresponding memory headroom.
3, the shared input/output element and common input/output element the difference is that:
1. the common input/output element is I/O data point association corresponding with system process equipment, it is responsible for from existing Reading/output real-time control data in field process equipment or device emulation model, the partial data not fully participate in distribution The data sharing of controller;
2. the shared input/output element be corresponded to system controller I/O channel association, and in controller Specific physics shared drive address is corresponding.By sharing input/output element, engineer can automatically be selected specifically Data are loaded into shared drive, and carry out data interaction with other distributed directors.
3. the shared input/output element and common input/output element are in Memory Allocation storage according to subregion Mode be managed and distinguish, each subregion opens up corresponding storage region in controller memory and is corresponding to it.
For example, all input/output elements can be carried out subregion, and the specified area S according to 26 letter characters of A-Z For the storage region for sharing input/output element, remaining subregion is used to store the common corresponding data of input/output element, The area S data be can provide for data sharing.Further, AO 003 can be used to indicate that No. 003 common analog output Element;AOS 005 can be used to indicate that No. 005 area S analog output element, i.e. No. 005 analog quantity shares output element.
(2), the data sharing method between the distributed director provided by the invention based on configuration element, Ling Yizhu Be characterized in that: the configuration mode orderly connected using graphic elements is realized by the shared element that outputs and inputs to specified total The acquisition and output of data are enjoyed, and shared data is transparent as it can be seen that can monitor on-line.
Concrete methods of realizing is as follows:
1, the data sharing method in the present invention between the multiple distributed directors of controller layer is as follows:
1. configuring global sharing memory region to each controller node, the global sharing memory region includes all points The global sharing memory region of the shared data information of cloth controller node, i.e., each controller node both includes local node The shared data of offer, also comprising the shared data from other nodes.
2. the method for using physical memory unified addressing carries out the global sharing memory region of all distributed directors Definition.
3. the data synchronization strategy of the shared drive is the shared data of each controller node using broadcast communication Mode is synchronized in other nodes in the corresponding physical memory addresses in global sharing memory region, is performed simultaneously periodic data Refresh operation.
2, shared data is specified in the present invention to be obtained from the shared drive of corresponding controller by sharing input element 's.
Specific steps method is as follows:
S1, editorial logic configuration program determine the configuration element M for needing to receive shared data;
By taking Fig. 1 as an example, strategic element B ' 001 is the configuration element of shared data to be received.
S2, the configuration mode orderly connected using graphic elements drag shared input element to Logical Configuration picture, connection Into the configuration element M;
The related information of S3, the configuration shared input element, with being linked to the specified shared drive of corresponding controller On location;
By taking Fig. 1 as an example, the shared input element " SI 001 " in work station K is associated with 1 institute of node on controller node K Corresponding shared drive address, can be realized the configuration sharing to 1 shared data of controller node;
S4, operation logic configuration program periodically read Real-Time Sharing number from the specified shared drive address According to dynamically updating in Logical Configuration picture, and its real value is shown in the side of shared input element.
3, it is the shared drive phase for being written to corresponding controller by sharing output element that shared data is specified in the present invention Answer region.
Specific steps method is as follows:
S1, editorial logic configuration program, selection need the configuration element N of shared data, output it data as shared Data;
S2, the configuration mode orderly connected using graphic elements drag shared input element to Logical Configuration picture, connection Into the configuration element N;
By taking Fig. 1 as an example, strategic element B 001 and input element D ' 002 are to provide the configuration element of shared data.
S3, the related information for configuring shared output element, are linked on the specified shared drive address of corresponding controller;
By taking Fig. 1 as an example, the shared output element " SO 001 " in work station 1 is associated in controller node 1 for depositing The region of memory for storing up 1 shared data of node, can be realized the configuration sharing to 001 data of strategic element B;It will be in work station K Shared output element " SO ' 002 " is associated with the region of memory that memory node K shared data is used in controller node K, Ji Keshi Now to the configuration sharing of 002 data of input element D '.
The real time data of shared output element is transmitted and stores described specified be total to by S4, operation logic configuration program Enjoy memory address;
S5, the shared data in the specified shared drive address is periodically synchronized to other controller node phases The region of memory answered.
In short, the present invention not only inherits the advantages of broadcast communication data synchronous method, while also overcoming the prior art Above-mentioned deficiency.Data sharing strategy in this method between different physical controllers is by way of configuration element in host computer What middle operation was realized, engineer can more autonomously decide on Information Sharing Strategy, select specified data in multi-controller section Data interaction is carried out between point, this mode can not only effectively improve the degree of flexibility of data sharing between controller, can also subtract Few influence of the unnecessary data sharing to grid load, controller performance.
Although specific embodiments of the present invention have been described above, those familiar with the art should be managed Solution, we are merely exemplary described specific embodiment, rather than for the restriction to the scope of the present invention, it is familiar with this The technical staff in field should be covered of the invention according to modification and variation equivalent made by spirit of the invention In scope of the claimed protection.

Claims (7)

1. the data sharing method between a kind of distributed director based on configuration element, it is characterised in that: in each distribution Shared drive is set in formula controller, by shared element, determines which data enters shared drive, and control with other distributions It is synchronous that device node processed carries out data;The shared element is directly associated with distributed director I/O channel, the inside of shared element Data are stored in the specified shared drive region of corresponding distributed director;Shared element passes through the side that graphic elements orderly connect Formula, directly participates in the configuration programming process of control logic, and the real value of shared element is dynamically presented in configuration picture, passes through Shared element realizes the acquisition and output to specified shared data, and shared data is transparent, can monitor on-line;Each distributed control The shared data of device node processed is synchronized to corresponding shared drive memory block in other nodes by way of broadcast communication.
2. the data sharing method between a kind of distributed director based on configuration element according to claim 1, Be characterized in that: the configuration element is the control function module for executing analog quantity or amount of logic operation, having between multiple element Sequence connects the Logical Configuration program to form system, and different types of element is distinguished by component symbol mark, multiple same types Element distinguished by element lower label;The configuration element includes input element, output element, strategic element and shares Element;The input element, output element, strategic element are for writing conventional Logical Configuration program;The shared element packet Include shared input element and shared output element.
3. the data sharing method between a kind of distributed director based on configuration element according to claim 2, Be characterized in that: the shared input element and shared output element: include analog input/output element, digital quantity input/ Output element, intermediate analog quantity input/output element and sandwich digit amount input/output element;Intermediate analog quantity/the number Amount input element is located at input side, and internal data can be transferred to strategic element or output element;Intermediate analog quantity/the number Amount output element is located at outlet side, for reading and storing the calculated result of intermediate logic;The shared input element and shared Output element: the editor that Logical Configuration program is participated in Logical Configuration picture can be added to;When Logical Configuration program is run, The real time data of itself can be dynamically shown in configuration picture;During Logical Configuration, similar element all can be automatic Ground generates unique lower label.
4. the data sharing method between a kind of distributed director based on configuration element according to claim 2, Be characterized in that: the shared input/output element be corresponded to industrial control system controller I/O channel association, and with control Specific physics shared drive address is corresponding in device processed;By sharing input/output element, operator can automatically be selected Specific data are loaded into shared drive, and carry out data interaction with other distributed directors;The shared input/output element It is managed and distinguishes in the way of subregion in Memory Allocation storage with common input/output element, each subregion exists Corresponding storage region is opened up in controller memory to be corresponding to it.
5. the data sharing method between a kind of distributed director based on configuration element according to claim 1, Be characterized in that: the data sharing mode in controller layer between multiple distributed directors is as follows: configuring to each controller node Global sharing memory region, the global sharing memory region include the shared data information of all distributed director nodes, The global sharing memory region of i.e. each controller node had both included the shared data that local node provides, also comprising being originated from other The shared data of node;
By the way of physical memory unified addressing, the global sharing memory region of all distributed directors is defined; The data synchronization strategy of the shared drive is the shared data of each controller node by the way of broadcast communication, is synchronized to In other nodes in the corresponding physical memory addresses in global sharing memory region, it is performed simultaneously periodic data refresh operation.
6. the data sharing method between a kind of distributed director based on configuration element according to claim 2, Be characterized in that: shared data is obtained from the shared drive of corresponding distributed director by sharing input element in the method It takes, specifically: S1, editorial logic configuration program determine the configuration element M for needing to receive shared data;
S2, the configuration mode orderly connected using graphic elements are dragged shared input element to Logical Configuration picture, are connected to institute It states in configuration element M;
The related information of S3, the configuration shared input element are linked on the specified shared drive address of corresponding controller;
S4, operation logic configuration program periodically read Real-Time Sharing data from the specified shared drive address, move It updates to state in Logical Configuration picture, and its real value is shown in the side of shared input element.
7. the data sharing method between a kind of distributed director based on configuration element according to claim 2, Be characterized in that: shared data is the shared drive for being written to corresponding distributed director by sharing output element in the method Corresponding region, specifically: S1, editorial logic configuration program, selection need the configuration element N of shared data, output it data As shared data;
S2, the configuration mode orderly connected using graphic elements are dragged shared input element to Logical Configuration picture, are connected to institute It states in configuration element N;
S3, the related information for configuring shared output element, are linked on the specified shared drive address of corresponding controller;
S4, operation logic configuration program, the real time data of shared output element is transmitted and store it is described it is specified it is shared in Deposit address;
S5, that the shared data in the specified shared drive address is periodically synchronized to other controller nodes is corresponding Region of memory.
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