CN102354191A - Method for communicating with PLCs (Programmable Logic Controllers) and upper computer - Google Patents
Method for communicating with PLCs (Programmable Logic Controllers) and upper computer Download PDFInfo
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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
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Abstract
The invention discloses a method for communicating with PLCs (Programmable Logic Controllers) and an upper computer. The method comprises the steps of: receiving a command connecting the PLCs; trying to read PLC type identification information in the PLCs by adopting prestored communication protocols and/or communication parameters aiming at multiple types of PLCs one by one, after reading successfully, determining the communication protocols and the communication parameters of the PLCs as the communication protocol and the communication parameter adopted when PLC type identifications are successfully read; and by adopting the determined communication protocol and the communication parameter, communicating with the PLCs. Uniform package of the communication protocol and/or communication parameters of multiple types of PLCs can ensure that the upper computer can meet the communication with most of types of PLCs, thus the generality of the upper computer and the flexibility of PLC selection are improved. In addition, automatic reorganization of the communication protocols and/or the communication parameters of the multiple types of the PLCs can save works of manually selecting the PLC types and the communication parameters, thus the communication efficiency is increased.
Description
Technical field
The present invention relates to the communications field, particularly, relate to a kind of method and host computer of communicating with PLC of being used for.
Background technology
Mixing plant generally adopts the host computer couple PLC that links to each other with this host computer to communicate at present; For dissimilar PLC; Need host computer interface routine, thereby make this host computer to communicate, to realize data write with this dissimilar PLC to host computer exploitation different editions.
Above-mentioned communication mode exists following defective: (1) host computer versatility is not high; Only can communicate,, then need in host computer, to add interface routine to the PLC of this non-common type for the PLC of non-common type with the PLC of common type; Construction cycle is long, the version management difficulty; (2) this kind communication mode causes the mixing plant control section in production and later maintenance process, and the selection of PLC is very dumb, produces and the maintenance cost increase.
Summary of the invention
The purpose of this invention is to provide a kind of method and host computer of communicating with PLC of being used for, this method and host computer have very high versatility, make that the selection of PLC is more flexible.
To achieve these goals, the present invention provides a kind of host computer of communicating with PLC of being used for, and this host computer comprises: receiving port is used to receive the order that connects said PLC; And controller; Be used for after said receiving port receives said order; Adopt the communication protocol and/or the messaging parameter to multiple PLC type of storage in advance one by one; The PLC type identification information in the said PLC is read in trial, and after reading success, confirms that the communication protocol of said PLC and messaging parameter are communication protocol and the messaging parameter that is adopted when successfully reading this PLC type identification; And adopt determined communication protocol and messaging parameter, communicate with said PLC.
Correspondingly, the present invention also provides a kind of method of communicating with PLC of being used for, and this method comprises: receive the order that connects said PLC; Adopt the communication protocol and/or the messaging parameter to multiple PLC type of storage in advance one by one; The PLC type identification information in the said PLC is read in trial; And after reading success, confirm that the communication protocol of said PLC and messaging parameter are communication protocol and the messaging parameter that is adopted when successfully reading this PLC type identification; And adopt determined communication protocol and messaging parameter, communicate with said PLC.
Through technique scheme, can unify encapsulation to communication protocol and/or the messaging parameter of polytype PLC, through attempting reading the PLC type identification information in the said PLC, realize the automatic identification of PLC type and messaging parameter afterwards.The unified encapsulation of the communication protocol of polytype PLC and/or messaging parameter can make host computer can satisfy and the communicating by letter of most of type PLC, and has improved the versatility of host computer and the dirigibility that PLC selects.In addition, the automatic identification of the communication protocol of polytype PLC and/or messaging parameter also can be saved the work of artificial selection PLC type and messaging parameter, improves communication efficiency.
Other features and advantages of the present invention will partly specify in embodiment subsequently.
Description of drawings
Accompanying drawing is to be used to provide further understanding of the present invention, and constitutes the part of instructions, is used to explain the present invention with following embodiment, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the structural representation of host computer provided by the invention; And
Fig. 2 is the process flow diagram of the method that is used for communicating with PLC provided by the invention.
Description of reference numerals
10 receiving ports, 20 controllers
Embodiment
Be elaborated below in conjunction with the accompanying drawing specific embodiments of the invention.Should be understood that embodiment described herein only is used for explanation and explains the present invention, is not limited to the present invention.
Fig. 1 is the structural representation of host computer provided by the invention.As shown in Figure 1, the invention provides a kind of host computer of communicating with PLC of being used for, this host computer comprises: receiving port 10 is used to receive the order that connects said PLC; And controller 20; Be used for after said receiving port receives said order; Adopt the communication protocol and/or the messaging parameter to multiple PLC type of storage in advance one by one; The PLC type identification information in the said PLC is read in trial, and after reading success, confirms that the communication protocol of said PLC and messaging parameter are communication protocol and the messaging parameter that is adopted when successfully reading this PLC type identification; And adopt determined communication protocol and messaging parameter, communicate with said PLC.
In order to communicate with dissimilar PLC, need to specify different communication protocol and messaging parameter, such as for Omron network service PLC and Siemens network service PLC, then need adopt TCT/IP communication protocol, and need indicate IP address and port numbers; For the serial communication PLC of Omron, then need adopt serial communication protocol, and need indicate string slogan and baud rate; For Siemens's 5611 cartoon letters, then need indicate the MPI address.
Said communication protocol can comprise tcp/ip communication agreement and serial communication protocol etc., and said messaging parameter can comprise one or more in the following: IP address, port numbers, string slogan, baud rate, MPI address.Yet the present invention is not limited to this, communicates required communication protocol and messaging parameter all applicable to this with the PLC of any kind.
Preferably, said receiving port 10 can also receive the PLC type of said PLC; Said controller 20 can also be used under the situation that adopts the pairing communication protocol of PLC type that is received; Adopt institute's communication stored parameter one by one; The PLC type identification information in the said PLC is read in trial; And after reading success, the communication protocol of confirming said PLC is the pairing communication protocol of PLC type that is received, and the messaging parameter of said PLC is the messaging parameter that is adopted when successfully reading said PLC type identification.By this; Can be under the situation of knowing the PLC type; Adopt the pairing communication protocol of this PLC type, attempt one by one this communication protocol maybe be corresponding messaging parameter, than attempting each communication protocol and pairing each messaging parameter thereof one by one; Can reduce and confirm communication protocol and messaging parameter required time to improve the speed that connects between host computer and the PLC.
Preferably, said receiving port 10 also can receive the messaging parameter of said PLC; Under the situation of the messaging parameter that said controller 20 also is used in employing and is received; Adopt institute's communication stored agreement one by one; The PLC type identification information in the said PLC is read in trial; And after reading success, the communication protocol of confirming said PLC is the communication protocol that is adopted when successfully reading said PLC type identification, and the messaging parameter of said PLC is the messaging parameter that is received.By this; Can know under the situation of messaging parameter; Attempt one by one this messaging parameter maybe be corresponding communication protocol; Than attempting each communication protocol and pairing each messaging parameter thereof one by one, can reduce and confirm communication protocol and messaging parameter required time to improve the speed that connects between host computer and the PLC.
Fig. 2 is the process flow diagram of the method that is used for communicating with PLC provided by the invention.As shown in Figure 2, correspondingly, the invention provides a kind of method of communicating with PLC of being used for, this method comprises: receive the order that connects said PLC; Adopt the communication protocol and/or the messaging parameter to multiple PLC type of storage in advance one by one; The PLC type identification information in the said PLC is read in trial; And after reading success, confirm that the communication protocol of said PLC and messaging parameter are communication protocol and the messaging parameter that is adopted when successfully reading this PLC type identification; And adopt determined communication protocol and messaging parameter, communicate with said PLC.
Wherein, said messaging parameter can comprise one or more in the following: IP address, port numbers, string slogan, baud rate, MPI address.
Wherein, this method also can comprise: the PLC type that receives said PLC; The communication protocol of the said said PLC of confirming and/or the step of messaging parameter comprise: under the situation that adopts the pairing communication protocol of PLC type that is received; Adopt institute's communication stored parameter one by one; The PLC type identification information in the said PLC is read in trial; And after reading success, the communication protocol of confirming said PLC is the pairing communication protocol of PLC type that is received, and the messaging parameter of said PLC is the messaging parameter that is adopted when successfully reading said PLC type identification.
Wherein, this method also can comprise: the messaging parameter that receives said PLC; The communication protocol of the said said PLC of confirming and/or the step of messaging parameter comprise: under the situation that adopts the messaging parameter that is received; Adopt institute's communication stored agreement one by one; The PLC type identification information in the said PLC is read in trial; And after reading success, the communication protocol of confirming said PLC is the communication protocol that is adopted when successfully reading said PLC type identification, and the messaging parameter of said PLC is the messaging parameter that is received.
Identical about the detail of this method that is used for communicating with PLC and beneficial effect and above-mentioned and host computer that PLC communicates repeated no more in this.
Through technique scheme, can unify encapsulation to communication protocol and/or the messaging parameter of polytype PLC, through attempting reading the PLC type identification information in the said PLC, realize the automatic identification of PLC type and messaging parameter afterwards.The unified encapsulation of the communication protocol of polytype PLC and/or messaging parameter can make host computer can satisfy and the communicating by letter of most of type PLC, and has improved the versatility of host computer and the dirigibility that PLC selects.In addition, the automatic identification of the communication protocol of polytype PLC and/or messaging parameter also can be saved the work of artificial selection PLC type and messaging parameter, improves communication efficiency.
Than prior art, a kind of PLC of the each replacing of mixing plant control system then needs in the host computer interface routine to host computer exploitation different editions, and workload is quite big, inefficiency, and failure rate is very high.Through adopting scheme of the present invention, can under the situation that does not change host computer, realize any replacing of various PLC, improved work efficiency greatly.
Concrete application of the present invention is not limited to mixing plant, and the present invention all can be adopted in the field that any needs this type of and PLC communicate.
More than combine accompanying drawing to describe preferred implementation of the present invention in detail; But; The present invention is not limited to the detail in the above-mentioned embodiment; In technical conceive scope of the present invention, can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
Need to prove that in addition each the concrete technical characterictic described in above-mentioned embodiment under reconcilable situation, can make up through any suitable manner.For fear of unnecessary repetition, the present invention is to the explanation no longer separately of various possible array modes.
In addition, also can carry out combination in any between the various embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be regarded as the disclosed content of the present invention equally.
Claims (8)
1. one kind is used for the host computer that communicates with PLC, it is characterized in that this host computer comprises:
Receiving port (10) is used to receive the order that connects said PLC; And
Controller (20); Be used for after said receiving port receives said order; Adopt the communication protocol and/or the messaging parameter to multiple PLC type of storage in advance one by one; The PLC type identification information in the said PLC is read in trial, and after reading success, confirms that the communication protocol of said PLC and messaging parameter are communication protocol and the messaging parameter that is adopted when successfully reading this PLC type identification; And adopt determined communication protocol and messaging parameter, communicate with said PLC.
2. host computer according to claim 1 is characterized in that, said messaging parameter comprises one or more in the following: IP address, port numbers, string slogan, baud rate, MPI address.
3. host computer according to claim 1 is characterized in that,
Said receiving port (10) also receives the PLC type of said PLC;
Said controller (20) also is used under the situation that adopts the pairing communication protocol of PLC type that is received; Adopt institute's communication stored parameter one by one; The PLC type identification information in the said PLC is read in trial; And after reading success, the communication protocol of confirming said PLC is the pairing communication protocol of PLC type that is received, and the messaging parameter of said PLC is the messaging parameter that is adopted when successfully reading said PLC type identification.
4. host computer according to claim 1 is characterized in that,
Said receiving port (10) also receives the messaging parameter of said PLC;
Said controller (20) also is used under the situation that adopts the messaging parameter that is received; Adopt institute's communication stored agreement one by one; The PLC type identification information in the said PLC is read in trial; And after reading success, the communication protocol of confirming said PLC is the communication protocol that is adopted when successfully reading said PLC type identification, and the messaging parameter of said PLC is the messaging parameter that is received.
5. one kind is used for the method that communicates with PLC, it is characterized in that this method comprises:
Receive the order that connects said PLC;
Adopt the communication protocol and/or the messaging parameter to multiple PLC type of storage in advance one by one; The PLC type identification information in the said PLC is read in trial; And after reading success, confirm that the communication protocol of said PLC and messaging parameter are communication protocol and the messaging parameter that is adopted when successfully reading this PLC type identification; And
Adopt determined communication protocol and messaging parameter, communicate with said PLC.
6. method according to claim 5 is characterized in that, said messaging parameter comprises one or more in the following: IP address, port numbers, string slogan, baud rate, MPI address.
7. method according to claim 5 is characterized in that, this method also comprises: the PLC type that receives said PLC;
The communication protocol of the said said PLC of confirming and/or the step of messaging parameter comprise: under the situation that adopts the pairing communication protocol of PLC type that is received; Adopt institute's communication stored parameter one by one; The PLC type identification information in the said PLC is read in trial; And after reading success, the communication protocol of confirming said PLC is the pairing communication protocol of PLC type that is received, and the messaging parameter of said PLC is the messaging parameter that is adopted when successfully reading said PLC type identification.
8. method according to claim 5 is characterized in that, this method also comprises: the messaging parameter that receives said PLC;
The communication protocol of the said said PLC of confirming and/or the step of messaging parameter comprise: under the situation that adopts the messaging parameter that is received; Adopt institute's communication stored agreement one by one; The PLC type identification information in the said PLC is read in trial; And after reading success, the communication protocol of confirming said PLC is the communication protocol that is adopted when successfully reading said PLC type identification, and the messaging parameter of said PLC is the messaging parameter that is received.
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Cited By (12)
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| CN102555064A (en) * | 2012-03-02 | 2012-07-11 | 中联重科股份有限公司 | Proportioning system and method for concrete, and upper computer |
| WO2013033889A1 (en) * | 2011-09-06 | 2013-03-14 | 长沙中联重工科技发展股份有限公司 | Method for communicating with plc and upper computer |
| CN103281287A (en) * | 2012-10-24 | 2013-09-04 | 南车株洲电力机车研究所有限公司 | User datagram protocol (UDP)-based wind generating set communication method and system |
| CN103324142A (en) * | 2012-03-19 | 2013-09-25 | 平田机工株式会社 | Control device and control method |
| CN105681086A (en) * | 2016-01-21 | 2016-06-15 | 珠海格力电器股份有限公司 | Communication manager and data collection method of programmable logic control device |
| CN105721474A (en) * | 2016-02-24 | 2016-06-29 | 成都科来软件有限公司 | Data acquisition device in support of multiple industrial control protocols |
| WO2017004867A1 (en) * | 2015-07-07 | 2017-01-12 | 北京科技大学 | Device testing and evaluation method and system for plc security protection |
| CN107179740A (en) * | 2017-06-23 | 2017-09-19 | 杭州电子科技大学 | The Compilation Method and embedded system of Embedded PLC |
| CN107783434A (en) * | 2016-08-30 | 2018-03-09 | 致伸科技股份有限公司 | Automatic control system and the instrument method for automatically searching being applied thereon |
| CN110174855A (en) * | 2018-02-21 | 2019-08-27 | 凯柏精密机械(嘉兴)有限公司 | Meter data collection apparatus and method |
| CN111010461A (en) * | 2019-12-25 | 2020-04-14 | 浙江力太工业互联网有限公司 | Automatic PLC data address probing method and device |
| CN111179462A (en) * | 2019-12-04 | 2020-05-19 | 山西诚鹏科技开发有限公司 | PLC operation data recording method based on multi-master station communication mode |
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| WO2013033889A1 (en) * | 2011-09-06 | 2013-03-14 | 长沙中联重工科技发展股份有限公司 | Method for communicating with plc and upper computer |
| CN102555064B (en) * | 2012-03-02 | 2015-05-20 | 中联重科股份有限公司 | Proportioning system and upper computer |
| CN102555064A (en) * | 2012-03-02 | 2012-07-11 | 中联重科股份有限公司 | Proportioning system and method for concrete, and upper computer |
| CN103324142A (en) * | 2012-03-19 | 2013-09-25 | 平田机工株式会社 | Control device and control method |
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| CN105721474A (en) * | 2016-02-24 | 2016-06-29 | 成都科来软件有限公司 | Data acquisition device in support of multiple industrial control protocols |
| CN105721474B (en) * | 2016-02-24 | 2018-11-09 | 成都科来软件有限公司 | A kind of device for supporting a variety of industry control protocol data acquisitions |
| CN107783434A (en) * | 2016-08-30 | 2018-03-09 | 致伸科技股份有限公司 | Automatic control system and the instrument method for automatically searching being applied thereon |
| CN107179740A (en) * | 2017-06-23 | 2017-09-19 | 杭州电子科技大学 | The Compilation Method and embedded system of Embedded PLC |
| CN110174855A (en) * | 2018-02-21 | 2019-08-27 | 凯柏精密机械(嘉兴)有限公司 | Meter data collection apparatus and method |
| CN111179462A (en) * | 2019-12-04 | 2020-05-19 | 山西诚鹏科技开发有限公司 | PLC operation data recording method based on multi-master station communication mode |
| CN111179462B (en) * | 2019-12-04 | 2022-02-08 | 山西诚鹏科技开发有限公司 | PLC operation data recording method based on multi-master station communication mode |
| CN111010461A (en) * | 2019-12-25 | 2020-04-14 | 浙江力太工业互联网有限公司 | Automatic PLC data address probing method and device |
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Address after: 415907, Hunan, Hanshou hi tech Industrial Park, Changde Huang Fu neighborhood committee, No. 1, Union Road Patentee after: ZOOMLION HEAVY INDUSTRY SCIENCE&TECHNOLOGY Co.,Ltd. Address before: 410013 Yuelu District, Hunan, silver basin Road, No. 361, No. Patentee before: ZOOMLION HEAVY INDUSTRY SCIENCE&TECHNOLOGY Co.,Ltd. |