CN102521192A - Method for realizing support to hot plugging of dedicated Ethernet for control automation technology (EtherCAT) bus equipment - Google Patents
Method for realizing support to hot plugging of dedicated Ethernet for control automation technology (EtherCAT) bus equipment Download PDFInfo
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- CN102521192A CN102521192A CN2011104418889A CN201110441888A CN102521192A CN 102521192 A CN102521192 A CN 102521192A CN 2011104418889 A CN2011104418889 A CN 2011104418889A CN 201110441888 A CN201110441888 A CN 201110441888A CN 102521192 A CN102521192 A CN 102521192A
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Abstract
The invention discloses a method for realizing a support to the hot plugging of dedicated Ethernet for control automation technology (EtherCAT) bus equipment. The method is characterized by comprising the following steps that: 1) one or more EtherCAT controllers are connected in series in a bus mother board, wherein each EtherCAT controller has a dedicated interface which can work together with the hot-pluggable bus equipment; 2) when working normally, bus equipment M is connected with an EtherCAT controller M of the bus mother board through a first dedicated interface, and exchanges data with the EtherCAT controller M, and a communication link is connected to the next communication node through the EtherCAT controller M of the bus mother board; and 3) when the bus equipment M is damaged or lost, the communication link is directly connected to the next communication node without exchanging the data with the bus equipment M when passing through the EtherCAT controller M. By the method, a problem about the realization of a hot plugging function of the EtherCAT bus equipment is solved; and a dedicated interface design scheme is adopted, so that cost is low.
Description
Technical field
The invention discloses a kind of implementation method of supporting special-purpose EtherCAT (Ethernet for Control Automation Technology) bus equipment hot swap, applicable to automatic fields such as dcs, electric system, kinetic control system, servo-control systems.
Background technology
EtherCAT (Ethernet for Control Automation Technology) is a kind of real-time, Fast Ethernet communication protocol that is used for industrial automation.It has, and transmission capacity is big, transmission speed fast, clock synchronization property is high, realize characteristics such as cost is low, opening is good, supports multiple connected mode, can use the total linear structure of Industry Control, is applied to industrial field bus.The EtherCAT technology has adopted principal and subordinate's medium access mode, and in the system based on EtherCAT, main website control slave station sends or receive data.Main website sends Frame, and when Frame process slave station, slave station reads the output data in the association message.Simultaneously, the input data of slave station are inserted in the association message of same Frame.After this Frame carries out exchanges data through all slave stations and with slave station, Frame is returned by terminal slave station in the EtherCAT system.
In the plurality of applications occasion of industrial control process; The fault of certain equipment wherein can not cause the fault of subsystem also can not cause other equipment failures on the bus; Therefore; System bus devices need possess the function of hot plug (hot-plugging), when its replacing and off-grid, can not cause the fault and the off-grid of other equipment of bus.Character in view of the series connection of EtherCAT bus communication link; The hot plug of EtherCAT Controller controller (EtherCAT Controller) own must cause the disconnection of EtherCAT link; So adopt the mode of communications loop to solve the problem of single plant failure usually; Even but adopt loop fashion, when not only slave station damages or extracts off-grid, intact slave station also will break away from link and can't connect between the slave station of two damages.
Summary of the invention
Technical matters to be solved by this invention provides EtherCAT bus method of work in a kind of industrial field bus, can solve EtherCAT bus hot plug function problem of implementation.
For solving the problems of the technologies described above, technical scheme of the present invention is following:
A kind of implementation method of supporting special-purpose EtherCAT bus equipment hot swap is characterized in that, may further comprise the steps:
1) with one or more EtherCAT controllers in bus mother board
Series connectionConnect, each EtherCAT controller can also can independent communication work with the bus apparatus cooperating; Each EtherCAT controller has the special purpose interface with hot swappable bus apparatus cooperating;
2) communication link connects through the EtherCAT controller in bus mother board; 1. be connected and swap data through special purpose interface one with the EtherCAT controller M of bus mother board during bus apparatus M operate as normal; Communication link is connected to next communication node by the EtherCAT controller M of bus mother board, i.e. EtherCAT controller M+1 in the bus mother board;
3) damage or during disappearance as bus apparatus M, communication link during through EtherCAT controller M* not with bus apparatus M swap data, be directly connected to next communication node.
The implementation method of the special-purpose EtherCAT bus equipment hot swap of aforesaid support is characterized in that: connect through MII interface or LVDS interface between adjacent two EtherCAT controllers.
The implementation method of the special-purpose EtherCAT bus equipment hot swap of aforesaid support is characterized in that: said special purpose interface is SPI interface or MPI.
The beneficial effect that the present invention reached:
The bus mother board of the present invention through having the EtherCAT controller with have special purpose interface can with the mode of the hot swappable bus apparatus cooperating of EtherCAT controller cooperating; Solved the problem that EtherCAT bus equipment hot swap function realizes; Use the special purpose interface design proposal with low cost; Have modern design, characteristics such as reliable, flexible, be with a wide range of applications in industrial process control field.
Description of drawings
Fig. 1 is bus apparatus communication link figure of the present invention.
Embodiment
Below, in conjunction with accompanying drawing the present invention is described further:
As shown in Figure 1, similar general industrial fieldbus IO pattern uses bus mother board to be collet, and bus apparatus is connected on the bus mother board and works.One or more EtherCAT controllers that are connected are arranged, each and the hot swappable bus apparatus corresponding matching work one by one of using special purpose interface on the bus mother board of the present invention.Be example with bus apparatus M among the figure; During operate as normal; Bus apparatus M is connected through special interface one with the EtherCAT controller M of bus mother board, and this interface can be the special purpose interface that SPI interface, MPI or other EtherCAT controllers of EtherCAT controller support supported.The data that main website sends are through the swap data of this Interface & Bus equipment M.Communication link directly is connected to the EtherCAT controller M+1 of next communication node bus mother board from the EtherCAT controller M of bus mother board, through the next one identical interface and next bus apparatus swap data; When bus apparatus M damaged or lacks, bus mother board worked alone, and communication link is directly connected to next communication node through the EtherCAT controller M of bus mother board, does not carry out exchanges data with bus apparatus M.When certain or a plurality of bus equipment hot swap, all can not influence the operation of other normal node.
Below disclose the present invention with preferred embodiment, so it is not in order to restriction the present invention, and all employings are equal to replacement or the technical scheme that obtained of equivalent transformation mode, all drop within protection scope of the present invention.
Claims (3)
1. an implementation method of supporting special-purpose EtherCAT bus equipment hot swap is characterized in that, may further comprise the steps:
1) with one or more EtherCAT controllers in bus mother board
Series connectionConnect, each EtherCAT controller can also can independent communication work with the bus apparatus cooperating; Each EtherCAT controller has the special purpose interface with hot swappable bus apparatus cooperating;
2) communication link connects through the EtherCAT controller in bus mother board; Be connected and swap data through special purpose interface one with the EtherCAT controller M of bus mother board during bus apparatus M operate as normal; Communication link is connected to next communication node by the EtherCAT controller M of bus mother board, i.e. EtherCAT controller M+1 in the bus mother board;
3) damage or during disappearance as bus apparatus M, communication link during through EtherCAT controller M not with bus apparatus M swap data, be directly connected to next communication node.
2. the implementation method of the special-purpose EtherCAT bus equipment hot swap of support according to claim 1 is characterized in that: connect through MII interface or LVDS interface between adjacent two EtherCAT controllers.
3. the implementation method of the special-purpose EtherCAT bus equipment hot swap of support according to claim 1 is characterized in that: said special purpose interface is SPI interface or MPI.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104418889A CN102521192A (en) | 2011-12-26 | 2011-12-26 | Method for realizing support to hot plugging of dedicated Ethernet for control automation technology (EtherCAT) bus equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104418889A CN102521192A (en) | 2011-12-26 | 2011-12-26 | Method for realizing support to hot plugging of dedicated Ethernet for control automation technology (EtherCAT) bus equipment |
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| CN102521192A true CN102521192A (en) | 2012-06-27 |
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| CN2011104418889A Pending CN102521192A (en) | 2011-12-26 | 2011-12-26 | Method for realizing support to hot plugging of dedicated Ethernet for control automation technology (EtherCAT) bus equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111858437A (en) * | 2020-07-31 | 2020-10-30 | 上海海得控制系统股份有限公司 | Hot plug processing method and device based on double buses, storage medium and electronic equipment |
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| TW200412082A (en) * | 2002-12-02 | 2004-07-01 | Transpace Tech Co Ltd | Modular switch system on high-speed serial bus |
| CN101132328A (en) * | 2007-08-15 | 2008-02-27 | 北京航空航天大学 | Real-time industry Ethernet EtherCAT communication controller |
| CN101217442A (en) * | 2007-01-05 | 2008-07-09 | 益网科技股份有限公司 | A system bus with Ethernet as industrial controller |
| CN101963811A (en) * | 2010-10-29 | 2011-02-02 | 深圳市大族激光科技股份有限公司 | Communication controller and industrial control system based on same |
| CN201788397U (en) * | 2010-07-20 | 2011-04-06 | 杭州源久科技有限公司 | Real-time industrial Ethernet controller |
| CN202035054U (en) * | 2010-09-30 | 2011-11-09 | 北京飞利信科技股份有限公司 | Fault self-check system based on streaming media real-time bus |
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2011
- 2011-12-26 CN CN2011104418889A patent/CN102521192A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200412082A (en) * | 2002-12-02 | 2004-07-01 | Transpace Tech Co Ltd | Modular switch system on high-speed serial bus |
| CN101217442A (en) * | 2007-01-05 | 2008-07-09 | 益网科技股份有限公司 | A system bus with Ethernet as industrial controller |
| CN101132328A (en) * | 2007-08-15 | 2008-02-27 | 北京航空航天大学 | Real-time industry Ethernet EtherCAT communication controller |
| CN201788397U (en) * | 2010-07-20 | 2011-04-06 | 杭州源久科技有限公司 | Real-time industrial Ethernet controller |
| CN202035054U (en) * | 2010-09-30 | 2011-11-09 | 北京飞利信科技股份有限公司 | Fault self-check system based on streaming media real-time bus |
| CN101963811A (en) * | 2010-10-29 | 2011-02-02 | 深圳市大族激光科技股份有限公司 | Communication controller and industrial control system based on same |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111858437A (en) * | 2020-07-31 | 2020-10-30 | 上海海得控制系统股份有限公司 | Hot plug processing method and device based on double buses, storage medium and electronic equipment |
| CN111858437B (en) * | 2020-07-31 | 2022-06-28 | 上海海得控制系统股份有限公司 | Hot plug processing method and device based on double buses, storage medium and electronic equipment |
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Application publication date: 20120627 |