CN201993628U - Communication system between PLC (Programmable Logic Controller) and CAN (Controller Area Network) bus - Google Patents
Communication system between PLC (Programmable Logic Controller) and CAN (Controller Area Network) bus Download PDFInfo
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- CN201993628U CN201993628U CN2011200582305U CN201120058230U CN201993628U CN 201993628 U CN201993628 U CN 201993628U CN 2011200582305 U CN2011200582305 U CN 2011200582305U CN 201120058230 U CN201120058230 U CN 201120058230U CN 201993628 U CN201993628 U CN 201993628U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
The application discloses a communication system between a PLC (Programmable Logic Controller) and a CAN (Controller Area Network) bus. The system adopts a PLC supporting a free communication protocol and CAN protocol conversion equipment to realize the communication between the PLC and the CAN bus. The CAN protocol conversion equipment is used for acquiring the CAN bus data, the data is converted into data conforming to the communication protocol of the PLC, and the converted data is sent to the free communication interface of the PLC. After receiving the converted data, the PLC extracts and processes corresponding data so as to finally realize control over an automobile computer system. The system realizes the mutual interaction between the PLC and the CAN bus, and promotes the promotion and application of the CAN bus technology in the automobile computer control system.
Description
Technical field
The application relates to communication technique field, particularly relates to the communication system of PLC (Programmable Logic Controller, programmable logic controller (PLC)) and CAN bus.
Background technology
CAN (Controller Area Network, controller local area network) is one of most widely used fieldbus in the world, and the CAN bus has become the STD bus of Computer Controlled System for Vehicle and built-in industrial control area net.
In recent years, the CAN bussing technique uses more and more widely in vehicle complete vehicle communication, and, along with the successful utilization of CAN bussing technique in little visitor, begin gradually in oversize vehicle, to use.But,, restricted the promotion and application of CAN bussing technique owing to can't realize mutual communication between the serial ports of the PLC in CAN communication interface and the Computer Controlled System for Vehicle.
The utility model content
For solving the problems of the technologies described above, the embodiment of the present application provides the communication system of a kind of PLC and CAN bus, with solve the plc communication interface can't with the problem of CAN bus mutual communication, technical scheme is as follows:
The communication system of a kind of PLC and CAN bus comprises:
Support the programmable logic controller (PLC) of free communication agreement;
One end and CAN bus link, the CAN protocol conversion device that the other end and programmable logic controller (PLC) link;
Described CAN protocol conversion device obtains the CAN bus data, described CAN bus data is converted to the data of the communication protocol that meets described programmable logic controller (PLC), and the data after will changing is sent to the free communication interface of described programmable logic controller (PLC).
Preferably, described programmable logic controller (PLC) is a Siemens S7-200 series.
Preferably, described programmable logic controller (PLC) is PLC224XP.
The technical scheme that is provided by above the embodiment of the present application as seen, the communication system of described PLC and CAN bus, select PLC and the CAN protocol conversion device of supporting the free communication agreement for use, this CAN protocol conversion device is used to obtain the CAN bus data, this data-switching is become to meet the data of the communication protocol of described PLC, and the data after will changing send to the free communication interface of described PLC, after described PLC receives data after the described conversion, extract corresponding data and handle, the final control that realizes the automobile computer system.This system has realized the intercommunication mutually between PLC and the CAN bus, has promoted the promotion and application of CAN bussing technique in Computer Controlled System for Vehicle.
Description of drawings
In order to be illustrated more clearly in the embodiment of the present application or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, the accompanying drawing that describes below only is some embodiment that put down in writing among the application, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 realizes the structural representation of the communication system between a kind of PLC and CAN bus for the embodiment of the present application.
Embodiment
For above-mentioned purpose, the feature and advantage that make the application can become apparent more, the application is described in further detail below in conjunction with the drawings and specific embodiments.
The CAN bus adopts how main competitive mode bus structure, has the operation of many main websites and disperses the universal serial bus of arbitration and the characteristics of broadcast communication.On the CAN bus arbitrary node can be at any time on one's own initiative on network other node send information and be regardless of primary and secondary, therefore, can between each node, realize free communication.CAN equipment sends the CAN protocol data to the CAN bus by the data connector, and the CAN bus is broadcasted on bus in the mode of broadcasting, other CAN equipment can receive broadcast data, and unpack and check whether accept, receive if desired, then the data that receive are handled; Otherwise, abandon the broadcast data that receives.
See also Fig. 1, Fig. 1 is the structural representation of the communication system between PLC and CAN bus, and this system comprises: PLC1, CAN protocol conversion device 2, CAN bus 3, wherein:
Described PLC1 supports the free communication agreement, described free communication agreement is meant that the operator scheme by the communication port of user program control CPU main frame communicates, and uses this free communication agreement can be with the data transmission between the self-defining communication protocol realization plurality of devices.
Concrete, described PLC can select the S7-200 series of Siemens Company for use, such as: PLC224XP, this serial PLC supports the free communication agreement.
CAN protocol conversion device 2, one end and CAN bus link, and the other end and described PLC link, and are used to receive the broadcast data that the CAN bus is sent, described broadcast data is converted to the data of the communication protocol that meets described PLC, and the data after will changing are sent to the free communication interface of described PLC.
Concrete, the CAN protocol conversion device converts the broadcast data that receives to the data that meet the RS-232 communication standard, and sending to the free communication interface of PLC, PLC goes out corresponding data from the extracting data that receives to be handled, the final control action that realizes controlled device.The free communication interface setting of described PLC is the communication interface that meets the RS-232 communication standard.
One of ordinary skill in the art will appreciate that the principle of work of described CAN protocol conversion device, repeat no more herein.
The above only is the application's a embodiment; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the application's principle; can also make some improvements and modifications, these improvements and modifications also should be considered as the application's protection domain.
Claims (3)
1. the communication system of PLC and CAN bus is characterized in that, comprising:
Support the programmable logic controller (PLC) of free communication agreement;
One end and CAN bus link, the CAN protocol conversion device that the other end and programmable logic controller (PLC) link;
Described CAN protocol conversion device obtains the CAN bus data, described CAN bus data is converted to the data of the communication protocol that meets described programmable logic controller (PLC), and the data after will changing is sent to the free communication interface of described programmable logic controller (PLC).
2. system according to claim 1 is characterized in that, described programmable logic controller (PLC) is a Siemens S7-200 series.
3. system according to claim 2 is characterized in that, described programmable logic controller (PLC) is PLC224XP.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200582305U CN201993628U (en) | 2011-03-08 | 2011-03-08 | Communication system between PLC (Programmable Logic Controller) and CAN (Controller Area Network) bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200582305U CN201993628U (en) | 2011-03-08 | 2011-03-08 | Communication system between PLC (Programmable Logic Controller) and CAN (Controller Area Network) bus |
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| CN201993628U true CN201993628U (en) | 2011-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011200582305U Expired - Fee Related CN201993628U (en) | 2011-03-08 | 2011-03-08 | Communication system between PLC (Programmable Logic Controller) and CAN (Controller Area Network) bus |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104035369A (en) * | 2014-06-26 | 2014-09-10 | 广州市轻工高级技工学校 | PLC (programmable logic controller) interface converter |
| CN104283872A (en) * | 2014-09-28 | 2015-01-14 | 广东惠利普路桥信息工程有限公司 | Remote controller supporting CAN controller and PLC |
| CN104460605A (en) * | 2014-11-12 | 2015-03-25 | 宁夏嘉翔自控技术有限公司 | CAN bus communication topological structure of control system of oil field boiler |
| CN108791132A (en) * | 2018-05-16 | 2018-11-13 | 未来汽车科技（深圳）有限公司 | The data transmission method and Related product of polyelectron system in automobile |
-
2011
- 2011-03-08 CN CN2011200582305U patent/CN201993628U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104035369A (en) * | 2014-06-26 | 2014-09-10 | 广州市轻工高级技工学校 | PLC (programmable logic controller) interface converter |
| CN104035369B (en) * | 2014-06-26 | 2017-06-13 | 广州市轻工高级技工学校 | Plc interface converter |
| CN104283872A (en) * | 2014-09-28 | 2015-01-14 | 广东惠利普路桥信息工程有限公司 | Remote controller supporting CAN controller and PLC |
| CN104460605A (en) * | 2014-11-12 | 2015-03-25 | 宁夏嘉翔自控技术有限公司 | CAN bus communication topological structure of control system of oil field boiler |
| CN108791132A (en) * | 2018-05-16 | 2018-11-13 | 未来汽车科技（深圳）有限公司 | The data transmission method and Related product of polyelectron system in automobile |
| CN108791132B (en) * | 2018-05-16 | 2022-02-18 | 未来汽车科技（深圳）有限公司 | Data transmission method for multiple electronic systems in automobile and related product |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110928 Termination date: 20140308 |