CN116679610A

CN116679610A - Programming method of controller, visual development tool and controller

Info

Publication number: CN116679610A
Application number: CN202310874645.7A
Authority: CN
Inventors: 黄志波; 何永林; 梁银豪
Original assignee: Shanghai Enercomn Technology Co ltd
Current assignee: Shanghai Enercomn Technology Co ltd
Priority date: 2023-07-17
Filing date: 2023-07-17
Publication date: 2023-09-01

Abstract

The invention provides a programming method of a controller, a visual development tool and the controller, wherein the programming method of the controller comprises the following steps: the logic function module of the controller is visually displayed and edited through the web front end; converting the visual logic edited by the web front end into a file which can be identified by the controller; the Web front end transmits the identifiable file to the controller by using a tcp/ip protocol; the controller analyzes the identifiable files, allocates space for the corresponding logic nodes, creates a storage structure of a unidirectional logic linked list, and the sequence of the directed acyclic graph of the identifiable files is the sequence of the unidirectional logic linked list; the Web front end sends a control instruction to the controller, and the controller sequentially executes the logic nodes according to the sequence of the unidirectional logic linked list.

Description

Programming method of controller, visual development tool and controller

Technical Field

The invention relates to the technical field of industrial automation, in particular to a programming method of a controller, a visual development tool and the controller.

Background

The PLC (programmable logic controller ) is a digital operation controller with microprocessor for automatic control, and is composed of CPU, instruction and data memory, input/output interface, power supply, digital-analog conversion and other functional units.

The PLC programming adopts a ladder diagram, an instruction sheet, a functional module diagram, a structural texting programming language and the like for programming, and requires a special computer environment and a special desktop application program.

The PLC programming needs to be provided with a special PLC engineer for operation, and needs to go to an engineering site for encoding, burning, verification and other steps, so that the steps are complicated, the cost is high, and the project cost and the project progress are influenced; the PLC functional module has fewer types of diagrams, lacks intelligent modules, and is inconvenient for users to expand.

Therefore, how to conveniently program the controller is a problem to be solved at present.

Disclosure of Invention

The invention aims to provide a programming method of a controller, a visual development tool and the controller, which can solve the problem of inconvenient programming of the controller.

In order to achieve the above object, the present invention provides a programming method of a controller, comprising:

the logic function module of the controller is visually displayed and edited through the web front end;

converting the visual logic edited by the web front end into a file which can be identified by the controller;

the Web front end transmits the identifiable file to the controller by using a tcp/ip protocol;

the controller analyzes the identifiable files, allocates space for the corresponding logic nodes, creates a storage structure of a unidirectional logic linked list, and the sequence of the directed acyclic graph of the identifiable files is the sequence of the unidirectional logic linked list;

the Web front end sends a control instruction to the controller, and the controller sequentially executes the logic nodes according to the sequence of the unidirectional logic linked list.

In an alternative, the identifiable file is a json format file.

In an alternative scheme, the logic nodes are managed in a layered manner, so that the logic nodes execute in layers.

In the alternative, the required logic function is formed by dragging and connecting the predefined logic nodes and the logic processing module on the graphical editing interface of the web front end.

In the alternative, an actual physical hardware point is configured at a hardware point configuration interface of the web front end, a hardware point needed by an input node is configured at a logic point corresponding interface, and a hardware point to be written into by an output node is configured so as to display real-time data of the controller at the web front end.

In the alternative, a logic function is deployed to the controller to run in the controller state interface of the web front end, so that the collection and control of hardware data are realized.

In the alternative scheme, the controller adopts a double-process mode, and a parent process receives the command of the web front end to manage child processes;

the child process receives the logic file of the parent process and translates the logic file into a directed acyclic graph, and the child process executes each logic node according to the order of translating the directed acyclic graph.

In the alternative, the subprocess puts the creation and execution of the logic node into a plug-in by a plug-in mode; and the subprocess matches the hardware point positions with the logical nodes according to the names, and the main process directly reads the real-time values of the hardware point positions read by the subprocess or reads the real-time values of the matched physical nodes.

The invention also provides a visual development tool of the controller, which comprises the following components:

the graphical editing module based on Web is used for visually displaying and editing the logic function of the controller;

the conversion module is used for converting the visual logic edited by the graphical programming module into a file which can be identified by the controller;

and the transmission module is used for carrying out data transmission with the controller based on a tcp/ip protocol.

The invention also provides a controller which is programmed based on the development tool.

The invention has the beneficial effects that:

1. according to the invention, the logic function module is visually displayed through the web front-end technology, and engineering personnel (non-professional persons) can also use the web page end without installation on any mainstream operation system to program the logic function of the function module.

2. The data simulation of the engineering site is realized through the web front-end technology, so that engineering personnel (non-PLC professionals) can be prevented from reaching the site to debug the logic function.

3. The intelligent industrial edge controller can display the value of each node to the web front end completely and clearly through a tcp/ip technology, and can assist engineering personnel to complete the debugging of logic functions rapidly. The purposes of reducing project cost and accelerating project progress are achieved.

4. The intelligent industrial edge controller is developed by using a plug-in technology, and a user can conveniently expand own functional modules.

Drawings

The foregoing and other objects, features and advantages of the invention will be apparent from the following more particular descriptions of exemplary embodiments of the invention as illustrated in the accompanying drawings wherein like reference numbers generally represent like parts throughout the exemplary embodiments of the invention.

FIG. 1 is a schematic diagram of a graphical Web-based logic editing interface in an embodiment of the invention.

FIG. 2 is a schematic diagram of a basic flow of logic editing in an embodiment of the present invention.

Fig. 3 is a schematic diagram showing the input/output real-time values of a logic node according to an embodiment of the present invention.

Fig. 4 is a schematic diagram of a hardware point configuration in an embodiment of the present invention.

FIG. 5 is a block diagram of the overall design of the controller in an embodiment of the present invention.

Fig. 6 is a schematic diagram of an internal processing manner of the controller according to an embodiment of the invention.

Fig. 7 is a schematic diagram of hierarchical management of logical nodes according to an embodiment of the present invention.

Detailed Description

The invention is described in further detail below with reference to the drawings and the specific examples. The advantages and features of the present invention will become more apparent from the following description and drawings, however, it should be understood that the inventive concept may be embodied in many different forms and is not limited to the specific embodiments set forth herein. The drawings are in a very simplified form and are to non-precise scale, merely for convenience and clarity in aiding in the description of embodiments of the invention.

It will be understood that when an element or layer is referred to as being "on," "adjacent," "connected to," or "coupled to" another element or layer, it can be directly on, adjacent, connected, or coupled to the other element or layer, or intervening elements or layers may be present. In contrast, when an element is referred to as being "directly on," "directly adjacent to," "directly connected to," or "directly coupled to" another element or layer, there are no intervening elements or layers present. It will be understood that, although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the present invention.

Spatially relative terms, such as "under," "below," "beneath," "under," "above," "over," and the like, may be used herein for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use and operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements or features described as "under" or "beneath" other elements would then be oriented "on" the other elements or features. Thus, the exemplary terms "below" and "under" may include both an upper and a lower orientation. The device may be otherwise oriented (rotated 90 degrees or other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. As used herein, the term "and/or" includes any and all combinations of the associated listed items.

Example 1

Referring to fig. 1 to 7, the present embodiment provides a programming method of a controller, including:

Specifically, in this embodiment, the json format file is converted by the visualization logic of the web front-end orchestration into a DAG (Directed Acyclic Graph ) recognizable by the intelligent industrial edge controller. The Web front end uses tcp/ip to transfer the DAG file to the intelligent industrial edge controller. The intelligent industrial edge controller analyzes the json format file, allocates space for the corresponding logic node, and creates a unidirectional logic linked list storage structure corresponding to the json format file. The Web front end sends a control instruction to the intelligent industrial edge controller, and the intelligent industrial edge controller sequentially and circularly executes the control instruction according to the logic nodes of the json file.

The logic nodes comprise adding, subtracting, multiplying, dividing, greater than, less than, AND, OR, NOT, maximum, minimum, average, delay on, delay off, timing flip, PID, AI, user-definable logic units and the like.

Referring to fig. 1 and 2, on the graphical editing interface of the web front end, a required complex logic function is formed by performing drag and wire operation on a predefined logic node and a logic processing module.

Referring to fig. 3 and 4, an actual physical point is configured at a hardware point configuration interface (fig. 4) of the web front end, a hardware point required by an input node is configured at a logic point corresponding interface (fig. 3), and a hardware point to be written by an output node is configured so as to display real-time data of the controller on the web front end. With continued reference to fig. 3, at the controller status interface of the web front end, a logic function is deployed to the controller to run, so as to realize collection and control of hardware data.

Referring to fig. 5, the controller adopts a dual-process mode, and a parent process receives a command of a web front end through HTTP to manage child processes; the child process receives the logic file (json format file, saves the logic nodes and the connection relation of the logic nodes) of the parent process, translates the logic file into a directed acyclic graph, and executes each logic node according to the translation sequence of the directed acyclic graph. The parent-child processes communicate by way of pipes. The subprocess puts the creation and execution of the logic node into a plug-in through a plug-in mode; the subprocess matches the logical nodes with hardware points (Bacnet/IP, bacnet/MSTP, modbusTCP, modbus RTU OVER TCP, snap7, etc.) according to names, and the main process directly reads the real-time value of the hardware point read by the subprocess or reads the real-time value of the matched physical node. The sub-process puts the creation and execution of the logic node into the plugin through the plugin technology, so that the subsequent development of the personalized node is facilitated.

The child process in the controller stores the DAG as a storage structure of the unidirectional logic linked list as shown in fig. 6, the sequence of the DAG is the sequence of the linked list, the controller executes the linked list sequence, and finally, the value of the output node is calculated by obtaining the value of the input node and is stored in a disk or is input into a hardware point.

Referring to fig. 6 and 7, in the present embodiment, logical nodes are managed in a hierarchical manner, so that the logical nodes execute in layers. The leftmost diamond corresponds to input and the rightmost diamond corresponds to output. The small diamonds inside the large diamonds correspond to layered modules, the second layer is the middle diamond, and the third layer is the lowest diamond. The small diamonds in the middle of the third layer are small modules, which correspond to the logic processing module 1 and the logic processing module 2 in fig. 2. There may be many such small modules in the first layer, the second layer and the third layer. The input is layer-by-layer to the lower side and the output is layer-by-layer to the upper side.

The embodiment has complete logic nodes, and the logic nodes are placed in a dragging mode, so that the operation is convenient. Logic node intermediate value visual display, breakpoint debugging support and analog data input, so that the output efficiency of engineering personnel (non-professional persons) is improved, and the enterprise cost is saved. Besides the basic module, intelligent modules such as PID, sequence and AI can be added, and a user can run the AI module by using the main stream network model (mnn, ncnn, tensorflow, paddlepaddle) according to the own requirements. Through AI module, according to fixed input, use mainstream network model, reach intelligent purpose.

Example 2

The embodiment provides a visual development tool for a controller, which comprises the following components:

Specifically, the Web-based graphical programming module provides: editing function, logic point position corresponding function, hardware point position editing function, controller running state display, MQTT configuration function and controller network configuration function.

Wherein the editing function provides a basic programming unit required for logic editing, the programming unit comprising: the intelligent edge controller comprises an input node, an output node, a calculation module (the minimum unit of the intelligent industrial edge controller), and a sub-module (the sub-logic of the intelligent industrial edge controller is stored, and a batch of logic can be placed in the sub-modules to form a calculation module). The logic point location correspondence function includes: binding logical input nodes and output nodes by names in physical hardware points, and directly acquiring real-time values from the hardware points by the bound input nodes or output nodes or writing calculated values into the physical hardware points bound by the output nodes; the unbound point is called a software point, is stored in a memory of the controller, is written into a disk at fixed time, and also provides a real-time value or a historical value for displaying an input node or an output node, wherein the historical value can be displayed in a curve mode. The hardware point position editing function comprises the following steps: and matching the input node or the output node in the logic with the actual physical point position. This section provides a form of a table for the user to configure the actual physical points, which must provide the point names to match the points in the logic. The controller running state display comprises the following steps: providing logic operation and deployment, log output level configuration and display, logic operation interval configuration and display, logic operation state configuration and display, hardware point location acquisition and display and alarm state display. The MQTT configuration function provides a real-time value reporting cloud function of the matched physical hardware point positions and the unmatched physical hardware point positions; the controller network configuration function provides the network configuration function of the controller.

In the embodiment, the logic function module is visually displayed through the web front-end technology, and engineering personnel (non-professional personnel) can also use the web page end without installation on any mainstream operation system to program the logic function of the function module. The data simulation of the engineering site is realized through the web front-end technology, so that engineering personnel (non-PLC professionals) can be prevented from reaching the site to debug the logic function. The intelligent industrial edge controller can display the value of each node to the web front end completely and clearly through a tcp/ip technology, and can assist engineering personnel to complete the debugging of logic functions rapidly. The purposes of reducing project cost and accelerating project progress are achieved. The intelligent industrial edge controller is developed by using a plug-in technology, and a user can conveniently expand own functional modules.

Example 3

The present embodiment provides a controller that is programmed based on the development tool described above.

The programming method of the controller is described in embodiment 1, and will not be described here again.

The above description is only illustrative of the preferred embodiments of the present invention and is not intended to limit the scope of the present invention, and any alterations and modifications made by those skilled in the art based on the above disclosure shall fall within the scope of the appended claims.

Claims

1. A method of programming a controller, comprising:

2. The method of programming a controller of claim 1, wherein the identifiable file is a json format file.

3. The method of programming a controller of claim 1, wherein the logical nodes are managed in a hierarchical manner such that the logical nodes execute in layers.

4. The programming method of the controller according to claim 1, wherein the required logic functions are formed by drag and wire operations on the predefined logic nodes and the logic processing modules at the graphical editing interface of the web front end.

5. The programming method of the controller according to claim 1, wherein an actual physical point is configured at a hardware point configuration interface of the web front end, a hardware point required by an input node is configured at a logic point corresponding interface, and a hardware point to be written by an output node is configured so as to display real-time data of the controller at the web front end.

6. The programming method of the controller according to claim 1, wherein logic functions are deployed to the controller to run at the controller state interface of the web front end, so as to realize collection and control of hardware data.

7. The programming method of the controller according to claim 1, wherein the controller adopts a double-process mode, and a parent process receives the command of the web front end to manage child processes;

8. The programming method of the controller according to claim 7, wherein the sub-process puts creation and execution of the logical node into a plug-in by a plug-in manner; and the subprocess matches the hardware point positions with the logical nodes according to the names, and the main process directly reads the real-time values of the hardware point positions read by the subprocess or reads the real-time values of the matched physical nodes.

9. A visual development tool for a controller, comprising:

10. A controller, wherein the controller is programmed based on the development tool of claim 9.