CN113625654B - Industrial equipment remote control method and device based on PLC - Google Patents
Industrial equipment remote control method and device based on PLC Download PDFInfo
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- CN113625654B CN113625654B CN202110932796.4A CN202110932796A CN113625654B CN 113625654 B CN113625654 B CN 113625654B CN 202110932796 A CN202110932796 A CN 202110932796A CN 113625654 B CN113625654 B CN 113625654B
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/054—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/10—Plc systems
- G05B2219/11—Plc I-O input output
- G05B2219/1103—Special, intelligent I-O processor, also plc can only access via processor
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Abstract
The invention discloses a PLC-based industrial equipment remote control method and a PLC-based industrial equipment remote control device, wherein the method comprises the following steps: each PLC receives the operation data of corresponding industrial equipment and sends the data to a remote server; the industrial equipment control program running in the remote server operates the received data and then outputs an industrial equipment control instruction to be sent to the corresponding PLC; and each PLC outputs the received control instruction to the corresponding industrial equipment to execute the corresponding equipment control action. The invention migrates the control program of the industrial equipment which is traditionally burned on the PLC controller to the remote server, the control of the industrial equipment does not depend on the calculation power of the PLC controller any more, and the condition that the use cost of the equipment of an enterprise is increased because the calculation power of the PLC controller is insufficient and hardware upgrading is needed no more can occur. Most importantly, the control program of the equipment is upgraded only on the remote server, and the equipment is not required to be upgraded on site one by one, so that the operation and maintenance cost of the equipment is reduced.
Description
Technical Field
The invention relates to the technical field of industrial equipment remote control, in particular to a PLC-based industrial equipment remote control method and device.
Background
Programmable logic devices (hereinafter referred to as "PLC") are common devices for automatically controlling industrial equipment. A manufacturer burns a control program in a PLC controller according to the actual control requirement of the industrial equipment to realize the automatic control of the industrial equipment. However, the method for automatically controlling the operation of the equipment by burning the control program in the PLC at present has the following technical problems:
1. manufacturers of PLC controllers are numerous, programming languages used by PLC controllers of different brands and types may be different, difficulty in mastering various PLC programming languages by program developers is high, and equipment manufacturers need to recruit developers familiar with various PLC programming languages, so that labor cost is increased.
2. The upgrading and modification of the control program of the industrial equipment need operation and maintenance personnel to go to the field for operation and maintenance. However, generally sold customers of industrial equipment produced in batches are dispersed, when equipment control programs need to be upgraded, operation and maintenance personnel need to visit the door one by one, the equipment operation and maintenance cost is high, and the operation and maintenance timeliness cannot be guaranteed.
3. The computing power of the PLC controller is limited, and when the computing power required by the control program exceeds the computing power of the PLC controller, hardware upgrade (for example, replacement of a PLC controller with a higher computing power) needs to be performed on the PLC controller, which increases the equipment use cost of an enterprise.
4. Most of the existing PLC programming languages are low-level languages, and the quantity of statements of a control program burnt in the PLC controller is limited due to the limited memory space of the PLC controller, so that the control process of complex equipment is not easy to realize.
5. The PLC in the industrial equipment is specially designed and produced for the industrial equipment, the data access capability to the existing ERP or MES system is limited, and the data access capability cannot support database languages such as SQL (structured query language) and the like, so that the existing mode of burning an equipment control program in the PLC according to the requirements of the industrial equipment to control the industrial equipment becomes the biggest obstacle of industrial automation, digitization and big data.
Disclosure of Invention
The invention aims to provide a PLC-based industrial equipment remote control method and device to solve the technical problems.
In order to achieve the purpose, the invention adopts the following technical scheme:
provided is a PLC-based industrial equipment remote control method, comprising:
step S1, each PLC receives the operation data of the corresponding industrial equipment and sends the data to the remote server;
step S2, the industrial equipment control program running in the remote server calculates the received data and outputs industrial equipment control instructions to send to the corresponding PLC controller;
and step S3, each PLC outputs the received control command to the corresponding industrial equipment to execute the corresponding equipment control action.
As a preferable scheme of the present invention, each PLC controller realizes a communication connection with the remote server through a 5G communication module.
As a preferable scheme of the invention, each PLC controller realizes communication connection with the 5G communication module through any one interface of RS232, RS485, CAN, CANOPEN, PROFIBUS, PROFINET, PPI and MPI interfaces.
As a preferred embodiment of the present invention, the remote server is a PC terminal.
As a preferred scheme of the present invention, the industrial device control program is communicatively connected to a third-party software application through an API interface to implement data interaction between the industrial device control program and the third-party software application.
As a preferred aspect of the present invention, before the remote server receives the industrial device operation data sent by each PLC controller, the remote server further has an authority verification process, where the authority verification process includes:
step L1, after the 5G communication module is powered on and connected to the PLC controller, actively initiating a communication connection request to the remote server, where the communication connection request includes a serial number of the PLC controller, a serial number of the 5G communication module, an IMEI code, and an ICCID of a SIM card inserted in the 5G communication module;
l2, the remote server parses the serial number of the PLC controller, the serial number of the 5G communication module, the IMEI code and the ICCID of the SIM card from the received communication connection request, and performs data matching on each parsed serial number, IMEI code and ICCID with information stored in a PLC permission database,
if the matching is successful, opening a communication connection port for the 5G communication module so as to establish communication connection with the 5G communication module;
and if the matching fails, rejecting the communication connection request of the 5G communication module.
The invention also provides a PLC-based industrial equipment remote control device, which can realize the industrial equipment remote control method, and the device comprises:
each PLC is used for receiving operation data of corresponding industrial equipment and sending the data to a remote server;
the remote server is in communication connection with each PLC controller, and an industrial equipment control program running on the remote server calculates the received data and then outputs an industrial equipment control instruction to the corresponding PLC controller;
each PLC controller outputs the received control instruction to the corresponding industrial equipment to execute corresponding equipment control action;
the control program editing client runs on the remote server and is used for providing operation and maintenance personnel with the control program for upgrading the industrial equipment;
and the third-party software application is in communication connection with the industrial equipment control program through an API (application programming interface) interface so as to realize data interaction between the PLC and the third-party software application.
As a preferable scheme of the present invention, each PLC controller realizes a communication connection with the remote server through a 5G communication module.
As a preferable scheme of the invention, each PLC controller realizes communication connection with the 5G communication module through any one interface of RS232, RS485, CAN, CANOPEN, PROFIBUS, PROFINET, PPI and MPI interfaces.
The invention has the following beneficial effects:
1. the control program of the equipment is upgraded only in the remote server, and the industrial equipment is not required to be upgraded one by one on site, so that the operation and maintenance cost of the equipment is reduced, and the timeliness of the operation and maintenance of the equipment is ensured;
2. the equipment control program running on the remote server can be developed by using a high-level programming language, and joint development of multiple programming languages is supported, so that the development difficulty of the equipment control program is reduced;
3. the control of the industrial equipment does not depend on the operational capability of the PLC any more, the PLC only plays roles of data input and data output in the equipment control process, and the condition that the use cost of the equipment of an enterprise is increased due to the fact that hardware upgrading is needed because the operational capability of the PLC is insufficient is avoided;
4. the equipment control program running on the remote server supports simultaneous access to a plurality of industrial equipment, the number of the simultaneously accessed equipment is determined according to the data processing capacity of the remote server, and a remote server cluster can be built to expand the service number of the industrial equipment when necessary.
5. The PLC-based industrial equipment remote control device provided by the invention supports the communication connection of an equipment control program running on a remote server and third-party software application through an API (application programming interface) interface so as to realize the data interaction between the PLC and the third-party software application, expand the functions of the PLC and be beneficial to promoting industrial automation, digitization and big data.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a diagram illustrating implementation steps of a PLC-based industrial device remote control method according to an embodiment of the present invention;
FIG. 2 is a diagram of the method steps by which a remote server verifies the data transmission rights of a PLC controller;
fig. 3 is a schematic structural diagram of a PLC-based industrial equipment remote control device according to an embodiment of the present invention.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not indicated or implied that the referred device or element must have a specific orientation, be constructed in a specific orientation and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limitations of the present patent, and the specific meanings of the terms may be understood by those skilled in the art according to specific situations.
In the description of the present invention, unless otherwise explicitly specified or limited, the term "connected" or the like, if appearing to indicate a connection relationship between the components, is to be understood broadly, for example, as being fixed or detachable or integral; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through one or more other components or may be in an interactive relationship with one another. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The traditional industrial equipment control method comprises the following steps: burning an industrial equipment control program in the PLC, automatically acquiring the operating data of the industrial equipment by the control program, analyzing and calculating the operating state of the equipment according to the operating data of the equipment, and then generating an equipment control signal to control the industrial equipment to execute different equipment actions, such as turning on or off a switch and the like. However, the conventional industrial equipment control method has a high requirement on the operational capability of the PLC controller, and if the operational capability does not meet the equipment control requirement, the PLC controller is required to perform hardware upgrade (for example, replace the PLC controller with a higher operational capability), which undoubtedly increases the equipment use cost of an enterprise. The most important thing is that the equipment control program is burned in the PLC, and when the control program needs to be upgraded, the control program needs to be upgraded one by one manually on site each time, so that the operation and maintenance cost is high, and the operation and maintenance efficiency of the equipment cannot be guaranteed, which is very troublesome. In addition, the existing PLC controller does not support a high-level language to write an equipment control program, and the PLC controller has a limited memory space and a very limited number of program statements that can be stored, so that the PLC controller has a limited data access capability to the existing ERP or MES system, and has become the biggest obstacle to the promotion of industrial automation, digitization and big data. Therefore, in order to solve the above existing technical problems, an embodiment of the present invention provides a PLC-based industrial device remote control method, as shown in fig. 1 and 3, the method including:
step S1, each PLC receives the operation data of the corresponding industrial equipment and sends the data to a remote server, and the remote server preferably adopts a PC terminal;
step S2, the industrial equipment control program running in the remote server calculates the received data and outputs industrial equipment control instructions to send to the corresponding PLC controller;
and step S3, each PLC outputs the received control instruction to the corresponding industrial equipment to execute the corresponding equipment control action.
In order to reduce the communication time delay of the PLC controllers and the remote server, each PLC controller preferably implements a 5G wireless communication connection with the remote server through a 5G communication module. There are many existing 5G communication modules, so the specific brand and model of the 5G communication module applied in this embodiment will not be described here.
In this embodiment, each PLC controller preferably uses any one of the interfaces RS232, RS485, CAN, CANOPEN, PROFIBUS, PROFINET, PPI, and MPI to implement communication connection with the 5G communication module.
In order to modify or upgrade the industrial equipment control program on the remote server, a control program editing client is specially developed, the control program editing client runs on the remote server, and operation and maintenance personnel can use a high-level programming language to update or modify the industrial equipment control program on the control program editing client.
In order to increase the data interaction function between the PLC and the third-party software application, the specially developed industrial equipment control program can be also in communication connection with the third-party software application through the API interface, so that the data interaction between the PLC and the third-party software application is realized.
In order to ensure the safety of the data connection, before the remote server receives the industrial equipment operation data sent by each PLC controller, the remote server further has an authority verification process, as shown in fig. 2, which includes:
step L1, after the 5G communication module is powered on and connected with the PLC controller, actively initiating a communication connection request to the remote server, wherein the communication connection request comprises the serial number of the PLC controller, the serial number of the 5G communication module, the IMEI code and the ICCID of the SIM card inserted in the 5G communication module;
l2, the remote server parses the serial number of the PLC controller, the serial number of the 5G communication module, the IMEI code and the ICCID of the SIM card from the received communication connection request, and performs data matching on each parsed serial number, IMEI code and ICCID with information stored in the PLC permission database,
if the matching is successful (the serial number of the PLC controller, the serial number of the 5G communication module, the IMEI code and the ICCID of the SIM card are successfully matched), opening a communication connection port for the 6G communication module so as to establish communication connection with the 5G communication module;
and if the matching fails, rejecting the communication connection request of the 5G communication module.
After the connection is successfully established, the PLC sends the received industrial equipment operation data (such as switching value, analog quantity, pulse frequency and the like of the industrial equipment) to a remote server by using a 5G communication module, and the remote server outputs an industrial equipment control instruction to the corresponding PLC after computing the received data; the PLC converts the industrial equipment control instruction into switching value, analog quantity and the like to specifically control the corresponding industrial equipment.
The present invention also provides a PLC-based industrial equipment remote control apparatus, as shown in fig. 3, the apparatus including:
the system comprises a plurality of PLC controllers 1, a remote server 2 and a plurality of PLC controllers, wherein each PLC controller 1 is used for receiving operation data of corresponding industrial equipment and sending the data to the remote server;
the remote server 2 is in communication connection with each PLC 1, and an industrial equipment control program running on the remote server 2 operates the received data and then outputs an industrial equipment control instruction to the corresponding PLC 1;
each PLC (programmable logic controller) 1 outputs the received control instruction to corresponding industrial equipment to execute corresponding equipment control action;
the control program editing client 3 runs on the remote server 2 and is used for providing operation and maintenance personnel with an upgraded industrial equipment control program;
and the third-party software application 4 is in communication connection with the industrial equipment control program through the API interface so as to realize data interaction between the PLC controller 1 and the third-party software application 4.
In order to reduce the wireless communication delay between the PLC controllers 1 and the remote server 2, each PLC controller 1 is preferably connected to the remote server 2 through a 5G communication module 5.
More preferably, each PLC controller 1 is in communication connection with the 5G communication module 5 through any one of the RS232, RS485, CAN, CANOPEN, PROFIBUS, PROFINET, PPI, and MPI interfaces.
In conclusion, the invention achieves the following beneficial effects:
1. the control program of the equipment is upgraded only in the remote server, and the industrial equipment is not required to be upgraded one by one on site, so that the operation and maintenance cost of the equipment is reduced, and the timeliness of the operation and maintenance of the equipment is ensured;
2. the equipment control program running on the remote server can be developed by using a high-level programming language, and joint development of multiple programming languages is supported, so that the development difficulty of the equipment control program is reduced;
3. the control of the industrial equipment does not depend on the operational capability of the PLC any more, the PLC only plays roles of data input and data output in the equipment control process, and the condition that the use cost of the equipment of an enterprise is increased due to the fact that hardware upgrading is needed because the operational capability of the PLC is insufficient is avoided;
4. the equipment control program running on the remote server supports simultaneous access to a plurality of industrial equipment, the number of the simultaneously accessed equipment is determined according to the data processing capacity of the remote server, and a remote server cluster can be built to expand the service number of the industrial equipment when necessary.
5. The PLC-based industrial equipment remote control device provided by the invention supports the communication connection of an equipment control program running on a remote server and third-party software application through an API (application programming interface) interface so as to realize the data interaction between the PLC and the third-party software application, expand the functions of the PLC and be beneficial to promoting industrial automation, digitization and big data.
It should be understood that the above-described embodiments are merely preferred embodiments of the invention and the technical principles applied thereto. It will be understood by those skilled in the art that various modifications, equivalents, changes, and the like can be made to the present invention. However, such variations are within the scope of the invention as long as they do not depart from the spirit of the invention. In addition, certain terms used in the specification and claims of the present application are not limiting, but are used merely for convenience of description.
Claims (7)
1. A PLC-based industrial equipment remote control method is characterized by comprising the following steps:
step S1, each PLC receives the operation data of the corresponding industrial equipment and sends the data to the remote server;
step S2, the industrial equipment control program running in the remote server calculates the received data and outputs industrial equipment control instructions to send to the corresponding PLC controller;
step S3, each PLC controller outputs the received control instruction to the corresponding industrial equipment to execute the corresponding equipment control action;
each PLC controller realizes communication connection with the remote server through a 5G communication module;
before the remote server receives the industrial equipment operation data sent by each PLC controller, the remote server also has an authority verification process, and the authority verification process comprises the following steps:
step L1, after the 5G communication module is powered on and connected to the PLC controller, actively initiating a communication connection request to the remote server, where the communication connection request includes a serial number of the PLC controller, a serial number of the 5G communication module, an IMEI code, and an ICCID of a SIM card inserted in the 5G communication module;
l2, the remote server parses the serial number of the PLC controller, the serial number of the 5G communication module, the IMEI code and the ICCID of the SIM card from the received communication connection request, and performs data matching on each parsed serial number, IMEI code and ICCID with information stored in a PLC permission database,
if the matching is successful, opening a communication connection port for the 5G communication module so as to establish communication connection with the 5G communication module;
and if the matching fails, rejecting the communication connection request of the 5G communication module.
2. The PLC-based industrial equipment remote control method according to claim 1, wherein each PLC controller is in communication connection with the 5G communication module through any one of RS232, RS485, CAN, CANOPEN, PROFIBUS, PROFINET, PPI and MPI interfaces.
3. The PLC-based industrial device remote control method according to claim 1, wherein the remote server is a PC terminal.
4. The PLC-based industrial equipment remote control method according to claim 1, wherein the industrial equipment control program is in communication connection with a third-party software application through an API interface to realize data interaction between the industrial equipment control program and the third-party software application.
5. A PLC-based industrial equipment remote control apparatus capable of implementing the industrial equipment remote control method according to any one of claims 1 to 4, the apparatus comprising:
each PLC is used for receiving operation data of corresponding industrial equipment and sending the data to a remote server;
the remote server is in communication connection with each PLC controller, and an industrial equipment control program running on the remote server calculates the received data and then outputs an industrial equipment control instruction to the corresponding PLC controller;
each PLC controller outputs the received control instruction to the corresponding industrial equipment to execute corresponding equipment control action;
the control program editing client runs on the remote server and is used for providing operation and maintenance personnel with the control program for upgrading the industrial equipment;
and the third-party software application is in communication connection with the industrial equipment control program through an API (application programming interface) interface so as to realize data interaction between the PLC and the third-party software application.
6. The PLC-based industrial equipment remote control device according to claim 5, wherein each PLC controller is communicatively coupled to the remote server via a 5G communication module.
7. The PLC-based industrial equipment remote control device according to claim 6, wherein each PLC controller is in communication connection with the 5G communication module through any one of RS232, RS485, CAN, CANOPEN, PROFIBUS, PROFINET, PPI and MPI interfaces.
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| CN114785635B (en) * | 2022-06-21 | 2022-10-18 | 深圳研控自动化科技股份有限公司 | Programmable logic controller connection method and device, terminal equipment and storage medium |
| CN117148781B (en) * | 2023-11-01 | 2024-02-27 | 北京科技大学 | I/O equipment remote control method and system based on multi-PLC interconnection |
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