CN111142471A - Network programmable logic control system and method - Google Patents
Network programmable logic control system and method Download PDFInfo
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- CN111142471A CN111142471A CN202010049885.XA CN202010049885A CN111142471A CN 111142471 A CN111142471 A CN 111142471A CN 202010049885 A CN202010049885 A CN 202010049885A CN 111142471 A CN111142471 A CN 111142471A
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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
- G05B2219/1109—Expansion, extension of I-O
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Abstract
The invention relates to a network programmable logic control system and a network programmable logic control method, which comprise a server platform, Internet of things equipment, a programmable logic controller, expansion equipment, equipment parameters of peripheral interfaces of the equipment, or state parameters and control parameters of the peripheral interfaces of the equipment, among the equipment such as the Internet of things equipment, the programmable logic controller and the expansion equipment, and between the equipment and the server platform. The invention solves the problem that the service logic between the peripheral interfaces in the equipment such as the Internet of things equipment, the programmable logic controller, the expansion equipment and the like can be edited, and also solves the problem that the service logic between the peripheral interfaces in the equipment such as the Internet of things equipment, the programmable logic controller, the expansion equipment and the like can be edited.
Description
Technical Field
The invention relates to a network programmable logic control system and a network programmable logic control method, and belongs to the fields of internet, internet of things and embedded products.
Background
In many fields, it is desirable that various electronic devices are linked to work, the electronic devices are far apart and may cross provinces and countries, the service logic of the linked work of the electronic devices may need to change along with time, the common method is to update the program of the devices, the defect of the method is obvious, the workload is large, the realization is difficult, the linked service logic relationship between the devices can be configured on the server platform without updating the program of the devices, the target can be reached, the members of the devices linked to work together can be changed, and the service logic of a single electronic device can be changed.
In some control fields, one controller controls a plurality of electronic devices, the electronic devices are far away and possibly span provinces and countries, a user hopes to achieve the aim only by editing service logic on the controller and without changing programs of the electronic devices, and the method and the system achieve the aim by sending device parameters of peripheral interfaces of the electronic devices to the electronic devices through a server platform.
In other fields, a controller controls a plurality of electronic devices, the electronic devices are managed by the controller through an industrial bus, a user hopes to operate peripheral interfaces of the controller and all the electronic devices by only editing business logic on the controller without changing programs of the electronic devices, and the invention achieves the aim by sending control parameters of the peripheral interfaces of the controller and all the electronic devices.
Disclosure of Invention
The invention aims to provide a network programmable logic control system and a network programmable logic control method, which comprise a server platform, an Internet of things device, a programmable logic controller and an expansion device, wherein device parameters of peripheral interfaces of the devices are interacted between the devices such as the Internet of things device, the programmable logic controller and the expansion device and between the devices and the server platform, or state parameters and control parameters of the peripheral interfaces of the devices. The invention solves the problem that the service logic between the peripheral interfaces in the equipment such as the Internet of things equipment, the programmable logic controller, the expansion equipment and the like can be edited, and also solves the problem that the service logic between the peripheral interfaces in the equipment such as the Internet of things equipment, the programmable logic controller, the expansion equipment and the like can be edited.
In order to achieve the above object, the present invention provides a network programmable logic control system, which includes a server platform and an internet of things device, wherein the server platform has a device management module and a device parameter management module, and the internet of things device has a device parameter module, a network communication module and a peripheral interface management module, wherein:
the equipment management module is used for registering and logging in access equipment such as Internet of things equipment;
the equipment parameter management module is used for interacting the equipment parameters with the equipment and forwarding the equipment parameters to the equipment; the equipment parameter of the invention refers to a parameter mainly having a parameter name and a parameter value;
the equipment parameter module is used for interacting equipment parameters with the server platform, sending the equipment parameters of the Internet of things equipment to the server platform, and receiving and processing the equipment parameters from the server platform;
the network communication module is used for processing network connection with the server platform;
the peripheral interface management module is used for reading and writing the peripheral interface; the peripheral interface is a general name of a digital signal input port, an analog signal input port, a digital signal output port, an analog signal output port and a composite port of equipment, wherein the composite port is an interface formed by combining two or more input ports and output ports; the read-write peripheral interface reads the state parameter of the peripheral interface, sends the control parameter to the peripheral interface, controls the output of the peripheral interface, if the level of the input port 0 of a certain device is high level, the state parameter of the peripheral interface is 1, if the output 0 of a certain device is set to be high level, the control parameter 1 is sent to the output port 0 peripheral interface, the target of controlling the output of the output port 0 to be high level is reached, if a certain device is provided with a composite port 0, the composite port 0 is used for servo motor control, and if the working speed and direction of a servo motor are required to be controlled to be positive 1800 rotations, the control parameter is positively rotated and 1800 is sent to the composite port 0 peripheral interface.
Preferably, the system further comprises a programmable logic controller, wherein the programmable logic controller comprises:
the equipment parameter module is used for interacting equipment parameters with the server platform, sending the equipment parameters of the Internet of things equipment to the server platform, and receiving and processing the equipment parameters from the server platform;
the network communication module is used for processing network connection with the server platform;
the peripheral interface management module is used for reading and writing the peripheral interface;
the user logic processing module is used for sending the state parameters of the peripheral interface of the programmable logic controller to the user layer, receiving the control parameters of the peripheral interface from the user layer, sending the control parameters to the peripheral interface of the equipment, controlling the output of the peripheral interface of the equipment, or sending the control parameters to the server platform, forwarding the control parameters to the target equipment by the server platform, and controlling the output of the peripheral interface of the target equipment; the user layer described in the invention is to logically divide the programmable logic controller into a user layer and a system layer, the logic function described in the invention is the system layer, the user only needs to realize the service logic in the user layer, and the system layer achieves the aim of data interaction with the user layer by a library calling mode, an interface calling mode, a program covering mode during compiling and linking, and the like.
Preferably, the system further comprises an expansion device, the expansion device comprises an industrial bus communication module, a peripheral interface management module and an expansion processing module, the expansion device further comprises a device parameter module, the programmable logic controller further comprises an industrial bus communication module and an expansion device management module, wherein:
the industrial bus communication module is used for bus connection between the expansion equipment and the programmable logic controller;
the peripheral interface management module is used for reading and writing the peripheral interface;
the expansion processing module is used for sending the state parameters of the peripheral interface of the expansion equipment to the programmable logic controller, receiving the control parameters of the peripheral interface from the programmable logic controller, sending the control parameters to the peripheral interface of the equipment and controlling the output of the peripheral interface of the equipment;
the equipment parameter module is used for interacting the equipment parameters with the server platform, sending the equipment parameters of the equipment to the server platform and receiving and processing the equipment parameters from the server platform;
the expansion equipment management module is used for managing peripheral interfaces of all the expansion equipment; the method mainly comprises the steps that a programmable logic controller reads state parameters of peripheral interfaces from all expansion equipment connected with the programmable logic controller through an industrial bus, and sends control parameters of the peripheral interfaces of the expansion equipment to the expansion equipment;
the number of the Internet of things equipment is unlimited and can be from 0 to any number, and the number of the expansion equipment is unlimited and can be from 0 to any number;
the industrial bus refers to a data communication channel, such as a serial port, a USB (universal serial bus), a spi (serial bus), an RS485, an RS422, WIFI (wireless fidelity), Bluetooth, Zigbee, Ethernet and the like.
Preferably, the device parameters of the peripheral interface of the device, or the state parameters and the control parameters of the peripheral interface of the device, are interacted between the internet of things device, the programmable logic controller, the expansion device and the like, and between the device and the server platform; each type of the internet-of-things equipment, the programmable logic controller and the expansion equipment is an external interface with the same serial number, a piece of equipment parameter with the same parameter name is corresponding to the external interface, for example, an INPUT port 0 of the equipment has an equipment parameter with the same parameter name, if the INPUT port is 'INPUT 0', and for example, an output port 0 of the equipment has an equipment parameter with the same parameter name, if the INPUT port is 'Q0', when the equipment parameter 'Q0' of a certain equipment is 0, the level of the control output port 0 of the equipment is set to be low level, and the rest are analogized in sequence.
Preferably, the server platform further includes a file management module, and the internet of things device, the programmable logic controller, and the expansion device further include a file module and a firmware module, wherein:
the file management module is mainly used for uploading files, deleting files, downloading files and updating files;
the file module is used for inquiring files and downloading files by equipment;
the firmware module is used for equipment to inquire firmware and equipment to download the firmware; the firmware described in the present invention is the program code of the device.
In addition, the invention also provides a method for the network programmable logic control system, which comprises the following steps:
1) equipment registration, namely registering equipment related information in a server by the equipment of the Internet of things;
2) equipment login means that equipment of the Internet of things logs in a server;
3) the equipment control means reading and writing operation on equipment parameters of the Internet of things equipment;
the user service logic is realized by sending the device parameters to the server platform and then forwarding the device parameters to the target device by the server platform, or by configuring the device parameters on the server platform and then forwarding the device parameters to the target device by the server platform.
The invention also provides a method for the network programmable logic control system, which comprises the following steps:
1) equipment registration, namely registering equipment related information in a server by the Internet of things equipment and the programmable logic controller;
2) equipment login means that the Internet of things equipment and the programmable logic controller log in a server;
3) the state parameters of the peripheral interface are read by the programmable logic controller and then are transmitted to the user layer;
4) receiving the control parameters from the user layer, namely sending the control parameters to the designated Internet of things equipment according to conditions after the programmable logic controller acquires the control parameters of the peripheral interface from the user layer; the control parameters returned by the user layer contain target equipment information, if the control parameters are sent to the programmable logic controller, the control parameters are sent to an external interface of the programmable logic controller to control the output of the external interface, and if the control parameters are sent to the equipment of the Internet of things, the control parameters are converted into equipment parameters which are sent to the server platform firstly and then forwarded to the target equipment by the server platform;
5) the control parameters are processed, namely the control parameters are sent to an external interface of the programmable logic controller to control the output of the external interface, or the control parameters are processed by the specified Internet of things equipment; the processing method of the Internet of things equipment comprises the steps of uploading equipment parameters to a server platform if the equipment parameters are read operation, forwarding the equipment parameters to a programmable logic controller through the server platform, and controlling the output of a peripheral interface if the equipment parameters are write operation.
The invention also provides a method for the network programmable logic control system, which comprises the following steps:
1) reading the state parameters of the peripheral interfaces of all the expansion equipment, namely reading the state parameters of the peripheral interfaces of all the expansion equipment managed by the industrial bus one by the programmable logic controller;
2) the state parameters of the peripheral interface of the equipment and the state parameters of the peripheral interfaces of all the expansion equipment are transmitted to the user layer by the programmable logic controller;
3) receiving control parameters of the peripheral interface from the user layer, and sending the control parameters of the peripheral interface belonging to the expansion equipment to the specified expansion equipment after the programmable logic controller acquires the control parameters of the peripheral interface from the user layer;
4) and the control parameters are processed, namely the programmable logic controller sends the control parameters of the peripheral interface belonging to the equipment to the peripheral interface of the equipment to control the output of the peripheral interface, the expansion equipment sends the control parameters of the peripheral interface to the peripheral interface of the equipment to control the output of the peripheral interface, and returns the state parameters of the peripheral interface to the programmable logic controller.
The invention also provides a method for controlling the system by the network programmable logic, which comprises a firmware operation method and comprises the following steps:
1) uploading firmware, namely uploading the firmware of the equipment by manufacturers and users of the Internet of things equipment, the programmable logic controller and the expansion equipment;
2) equipment registration, namely registering equipment related information of the Internet of things equipment, a programmable logic controller and expansion equipment in a server platform;
3) equipment login means that the Internet of things equipment, the programmable logic controller and the expansion equipment log in a server platform;
4) the firmware updating control is that the user of the Internet of things equipment, the programmable logic controller and the expansion equipment sends an updating control command to the equipment;
5) and downloading the firmware, namely reading the firmware from the server platform by the Internet of things equipment, the programmable logic controller and the expansion equipment.
The invention also provides a method for controlling the system by the network programmable logic, which comprises a file operation method and comprises the following steps:
1) uploading files by using users of the Internet of things equipment, the programmable logic controller and the expansion equipment;
2) registering equipment, namely registering equipment information in the server platform by the Internet of things equipment, the programmable logic controller and the expansion equipment;
3) equipment login means that the Internet of things equipment, the programmable logic controller and the expansion equipment log in a server platform;
4) the file reading control is that the user of the Internet of things equipment, the programmable logic controller and the expansion equipment sends a reading control command to the equipment;
5) and reading the file, namely reading the file from the server platform by the Internet of things equipment, the programmable logic controller and the expansion equipment.
The invention relates to a network programmable logic control system, which solves the problem that Internet of things equipment, a programmable logic controller and expansion equipment can be remotely controlled by editing service logic on an App or a programmable logic controller, and also solves the problem that expansion equipment in an industrial bus can be controlled by editing the service logic on the programmable logic controller.
Drawings
Fig. 1 is a schematic view of an internet of things fan according to an embodiment of the invention;
FIG. 2 is a schematic view of an agricultural greenhouse management system according to an embodiment of the present invention;
Detailed Description
Hereinafter, the internet of things programmable logic controller and the method according to the present invention will be described in detail based on the accompanying drawings. The present invention is not limited to the present embodiment.
Example 1:
as shown in fig. 1, which is a schematic diagram of an internet of things fan according to an embodiment of the present invention, a server platform includes an equipment management module and an equipment parameter management module, and the internet of things fan includes an equipment parameter module, a network communication module, and an equipment peripheral management module.
The purpose to be achieved by this embodiment is to remotely control the startup and shutdown of the blower of the internet of things, the blower of the internet of things is composed of an internet of things device and an execution mechanism, the internet of things device is connected with the server platform through a network, and the blower is connected to the output port 0 of the internet of things device, so that a default device parameter Q0 is provided in the internet of things device, and the state of the output port 0 of the internet of things device can be controlled by sending the device parameter Q0 to the internet of things device through the internet of things platform.
In this embodiment, the blower of the internet of things serves as a controlled device, and a user can edit and control the service logic of the blower of the internet of things on the platform of the internet of things, namely, the blower of the internet of things is started under what condition and the blower of the internet of things is shut down under what condition.
Example 2:
as shown in fig. 2, a schematic diagram of an agricultural greenhouse management system according to an embodiment of the present invention includes a server platform, a programmable logic controller, 16 water sprayers, 8 plant tissue culture lamps, a rolling motor, a ventilation motor, and a temperature and humidity sensor, where the device installation of this embodiment is roughly that the programmable logic controller has 8 output ports, which are respectively connected to the water sprayers 1-8, the water sprayers 9-16, the 16 soil humidity sensors, the 8 plant tissue culture lamps, the rolling motor, the ventilation motor, and the temperature and humidity sensor are all connected to the programmable logic controller through Zigbee, and the illumination sensor is a remote device.
The present embodiment aims to achieve:
1) independently and remotely controlling each device of 16 water spraying devices, 8 plant tissue culture lamps, a roller shutter motor and a ventilation motor;
2) the state parameters of 16 water spraying devices, 16 soil humidity sensors, 8 plant tissue culture lamps, a roller shutter motor, a ventilation motor and a temperature and humidity sensor can be inquired remotely;
3) the method comprises the following steps of running a service logic program on the programmable logic controller, wherein the service logic program comprises the following service logic:
a) when the temperature detected by the environment temperature and humidity sensor in the greenhouse is lower than 20 ℃, the roller shutter is closed, and the ventilation motor is closed; when the temperature is higher than 36 ℃, the ventilation motor is turned on;
b) when one of the soil humidity sensors 1-16 is lower than 30, the water spraying device with the corresponding serial number is turned on; when the water content is higher than 60 ℃, closing the water spraying devices corresponding to the serial numbers;
c) when the illumination sensor detects that the illumination intensity is higher than 100, the plant tissue culture lamp is turned off, and the roller shutter is turned on; when the illumination intensity is lower than 60, turning on the plant tissue culture lamp and turning off the roller shutter;
the implementation process of this embodiment is that, the implementation method of remote control and remote query is the same as that of embodiment 1, and the process implemented by the programmable logic controller is roughly that a user edits service logic on the programmable logic controller, and the implemented pseudo code is: if (temperature and humidity sensor >30) { rolling screen is closed and ventilation motor is closed }, Else If (temperature and humidity sensor <36) { ventilation motor is opened }, If (soil humidity sensor n <30) { water sprayer is turned on } Else If (soil humidity sensor n >60) { water sprayer is turned off } If (illumination sensor >100) { plant tissue culture lamp is closed and rolling screen is turned on }, and Else If (illumination sensor <60) { plant tissue culture lamp is turned on and rolling screen is turned off }.
In this embodiment, the programmable logic control system manages the peripheral interfaces of all the devices in the system, and a user can manage the remote devices and the expansion devices by the programmable controller with simple logic codes, and the programmable logic controller can read input port states of all the devices connected to the programmable logic controller through the industrial bus, control output port states of the devices, read input port states of the remote devices, control program output port states, and possibly send the input port states and output port states of all the devices to the server platform and further to an administrator.
Claims (10)
1. A network programmable logic control system comprises a server platform and an Internet of things device, and is characterized in that,
the server platform has equipment management module, equipment parameter management module, and thing networking device has equipment parameter module, network communication module, peripheral hardware interface management module, wherein:
the equipment management module is used for registering and logging in access equipment such as Internet of things equipment;
the equipment parameter management module is used for interacting the equipment parameters with the equipment and forwarding the equipment parameters to the equipment;
the equipment parameter module is used for interacting equipment parameters with the server platform, sending the equipment parameters of the Internet of things equipment to the server platform, and receiving and processing the equipment parameters from the server platform;
the network communication module is used for processing network connection with the server platform;
and the peripheral interface management module is used for reading and writing the peripheral interface.
2. The network programmable logic control system of claim 1, further comprising a programmable logic controller having:
the equipment parameter module is used for interacting equipment parameters with the server platform, sending the equipment parameters of the Internet of things equipment to the server platform, and receiving and processing the equipment parameters from the server platform;
the network communication module is used for processing network connection with the server platform;
the peripheral interface management module is used for reading and writing the peripheral interface;
and the user logic processing module is used for sending the state parameters of the peripheral interface of the programmable logic controller to the user layer, receiving the control parameters of the peripheral interface from the user layer, sending the control parameters to the peripheral interface of the equipment, controlling the output of the peripheral interface of the equipment, or sending the control parameters to the server platform, forwarding the control parameters to the target equipment by the server platform, and controlling the output of the peripheral interface of the target equipment.
3. The network programmable logic control system according to claim 1 or 2, further comprising an expansion device, wherein the expansion device has an industrial bus communication module, a peripheral interface management module, and an expansion processing module, and further has a device parameter module, and the programmable logic controller further includes an industrial bus communication module and an expansion device management module, wherein:
the industrial bus communication module is used for bus connection between the expansion equipment and the programmable logic controller;
the peripheral interface management module is used for reading and writing the peripheral interface;
the expansion processing module is used for sending the state parameters of the peripheral interface of the expansion equipment to the programmable logic controller, receiving the control parameters of the peripheral interface from the programmable logic controller, sending the control parameters to the peripheral interface of the equipment and controlling the output of the peripheral interface of the equipment;
the equipment parameter module is used for interacting the equipment parameters with the server platform, sending the equipment parameters of the equipment to the server platform and receiving and processing the equipment parameters from the server platform;
and the expansion equipment management module is used for managing peripheral interfaces of all the expansion equipment.
4. The network programmable logic control system according to claim 1, 2, or 3, wherein device parameters of a peripheral interface of the device, or state parameters and control parameters of a peripheral interface of the device, are interacted between the internet of things device, the programmable logic controller, the expansion device, and the like, and between the device and the server platform.
5. The network programmable logic control system according to claim 1, 2, or 3, wherein the server platform further includes a file management module, and the internet of things device, the programmable logic controller, and the expansion device further include a file module and a firmware module, wherein:
the file management module is mainly used for uploading files, deleting files, downloading files and updating files;
the file module is used for inquiring files and downloading files by equipment;
and the firmware module is used for inquiring the firmware by the equipment and downloading the firmware by the equipment.
6. A method based on the network programmable logic control system of claim 1 and 4, characterized by comprising the following steps:
1) equipment registration, namely registering equipment related information in a server by the equipment of the Internet of things;
2) equipment login means that equipment of the Internet of things logs in a server;
3) and the equipment control means reading and writing operation on the equipment parameters of the equipment of the Internet of things.
7. A method based on the network programmable logic control system of claim 1, 2, 4, characterized by comprising the following steps:
1) equipment registration, namely registering equipment related information in a server by the Internet of things equipment and the programmable logic controller;
2) equipment login means that the Internet of things equipment and the programmable logic controller log in a server;
3) the state parameters of the peripheral interface are read by the programmable logic controller and then are transmitted to the user layer;
4) receiving the control parameters from the user layer, namely sending the control parameters to the designated Internet of things equipment according to conditions after the programmable logic controller acquires the control parameters of the peripheral interface from the user layer;
5) and the step of processing the control parameters refers to sending the control parameters to an external interface of the programmable logic controller, controlling the output of the external interface, or processing the control parameters by specified Internet of things equipment.
8. A method based on the network programmable logic control system of claim 1, 2, 3, 4, characterized by comprising the following steps:
1) reading the state parameters of the peripheral interfaces of all the expansion equipment, namely reading the state parameters of the peripheral interfaces of all the expansion equipment managed by the industrial bus one by the programmable logic controller;
2) the state parameters of the peripheral interface of the equipment and the state parameters of the peripheral interfaces of all the expansion equipment are transmitted to the user layer by the programmable logic controller;
3) receiving control parameters of the peripheral interface from the user layer, and sending the control parameters of the peripheral interface belonging to the expansion equipment to the specified expansion equipment after the programmable logic controller acquires the control parameters of the peripheral interface from the user layer;
4) and the control parameters are processed, namely the programmable logic controller sends the control parameters of the peripheral interface belonging to the equipment to the peripheral interface of the equipment to control the output of the peripheral interface, the expansion equipment sends the control parameters of the peripheral interface to the peripheral interface of the equipment to control the output of the peripheral interface, and returns the state parameters of the peripheral interface to the programmable logic controller.
9. A method based on the network programmable logic control system of claims 1, 2, 3, 5, characterized in that the method comprises a firmware operation method, comprising the following steps:
1) uploading firmware, namely uploading the firmware of the equipment by manufacturers and users of the Internet of things equipment, the programmable logic controller and the expansion equipment;
2) equipment registration, namely registering equipment related information of the Internet of things equipment, a programmable logic controller and expansion equipment in a server platform;
3) equipment login means that the Internet of things equipment, the programmable logic controller and the expansion equipment log in a server platform;
4) the firmware updating control is that the user of the Internet of things equipment, the programmable logic controller and the expansion equipment sends an updating control command to the equipment;
5) and downloading the firmware, namely reading the firmware from the server platform by the Internet of things equipment, the programmable logic controller and the expansion equipment.
10. A method based on the network programmable logic control system of claim 1, 2, 3, 5, characterized by comprising a method of file operation, the steps are as follows:
1) uploading files by using users of the Internet of things equipment, the programmable logic controller and the expansion equipment;
2) registering equipment, namely registering equipment information in the server platform by the Internet of things equipment, the programmable logic controller and the expansion equipment;
3) equipment login means that the Internet of things equipment, the programmable logic controller and the expansion equipment log in a server platform;
4) the file reading control is that the user of the Internet of things equipment, the programmable logic controller and the expansion equipment sends a reading control command to the equipment;
5) and reading the file, namely reading the file from the server platform by the Internet of things equipment, the programmable logic controller and the expansion equipment.
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| CN202010049885.XA CN111142471A (en) | 2020-01-17 | 2020-01-17 | Network programmable logic control system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111813041A (en) * | 2020-06-06 | 2020-10-23 | 杭州智尔科技有限公司 | Programmable logic controller based on computer programming language and implementation method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111813041A (en) * | 2020-06-06 | 2020-10-23 | 杭州智尔科技有限公司 | Programmable logic controller based on computer programming language and implementation method |
| CN111813041B (en) * | 2020-06-06 | 2021-05-07 | 杭州智尔科技有限公司 | Programmable logic controller based on computer programming language and implementation method |
| CN113219896A (en) * | 2020-06-06 | 2021-08-06 | 杭州智尔科技有限公司 | Programmable logic controller based on computer programming language and implementation method |
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Application publication date: 20200512 |
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