WO2018112852A1

WO2018112852A1 - Ladderlogic programming language-based numerical control apparatus, numerical control system, and debugging method therefor

Info

Publication number: WO2018112852A1
Application number: PCT/CN2016/111587
Authority: WO
Inventors: 庞泰
Original assignee: 深圳配天智能技术研究院有限公司
Priority date: 2016-12-22
Filing date: 2016-12-22
Publication date: 2018-06-28
Also published as: CN109313597A

Abstract

A LadderLogic Programming Language-based numerical control system and a debugging method therefor, comprising the following steps: step 11, selecting a variable to be altered from a plurality of control variables displayed in a LadderLogic monitoring list page according to a variable selection instruction inputted by a user; step 12, performing an inverse operation on the variable to be altered according to an inverse instruction inputted by the user. The method may effectively reduce the operational steps required to alter control variables during a debugging process, save operational time required to alter control variables, and effectively prevent erroneous operations.

Description

Numerical control device based on ladder programming language, numerical control system and debugging method thereof

[Technical Field]

The embodiment of the invention relates to a numerical control system, in particular to a numerical control device, a numerical control system and a debugging method thereof based on a ladder programming language.

【Background technique】

The Ladder Logic Programming Language (LAD) is one of the most widely used graphics programming languages of the Programmable Logic Controller (PLC) and is called the first programming language of PLC. The ladder programming language follows the form of the relay control circuit. The ladder diagram simplifies the symbol evolution based on the commonly used relay and contactor logic control. It has the characteristics of image, intuition, and practicality. It is easy for electrical technicians to accept. Currently used the most PLC programming language.

When debugging a CNC system using a ladder programming language, such as Auto Tool Change (ATC), it is necessary to change the

state

0 and 1 of some control variables to manually debug the timing of the CNC system. Each time you enter 0 and 1 manually, you need to operate the button at least 2~3 times, including pressing the input button first, then pressing the 0 or 1 button, and then pressing the enter button. The operation steps are cumbersome, easy to operate by mistake, and it is not easy to respond quickly according to the timing of the numerical control system, and the debugging is inconvenient.

[Summary of the Invention]

The embodiment of the invention provides a numerical control system based on a ladder programming language and a debugging method thereof, so as to save operation time when the control variable is modified, and effectively avoid misoperation.

In order to solve the above technical problem, a technical solution adopted by the embodiment of the present invention is to provide a debugging method of a numerical control system based on a ladder programming language, comprising the following steps: selecting an instruction according to a variable input by a user on a ladder monitoring list page. The variable to be modified is selected among the plurality of control variables displayed; the variable to be modified is reversed according to the inversion instruction input by the user.

Before the step of reversing the variable to be modified according to the user's inversion instruction, the method further includes: determining whether the variable to be modified is a bit variable; if the variable to be modified is a bit variable, performing the modification of the variable according to the user's inversion instruction Step of negating the operation; if the variable to be modified is a non-bit variable, Then, the step of performing the inversion operation on the modified variable according to the user's inversion instruction is not performed.

The step of performing an inversion operation on the modified variable according to the user's inversion instruction comprises: performing an inversion operation on the modified variable according to an operation instruction of the predetermined reverse key.

The reverse button corresponding to the reverse operation of the different variables to be modified is the same reverse button.

The method further includes: displaying the to-be-modified variable after the negation operation in the ladder monitor list page.

In order to solve the above technical problem, another technical solution adopted by the embodiment of the present invention is to provide a numerical control system based on a ladder programming language, including a human-computer interaction interface, a digital controller, and a programmable logic controller, wherein human-computer interaction The interface is configured to display a ladder monitor list page, and select a variable to be modified among the plurality of control variables displayed on the ladder monitor list page according to the variable selection instruction input by the user, and the human-computer interaction interface further receives the reverse instruction input by the user. And generating a register modification instruction to send to the digital controller, the digital controller forwards the register modification instruction to the programmable logic controller, and the programmable logic controller performs the inversion operation on the variable to be modified in the register according to the register modification instruction.

Wherein, the human-computer interaction interface further determines whether the variable to be modified is a bit variable; if the variable to be modified is a bit variable, the human-computer interaction interface generates a register modification instruction, and if the variable to be modified is a non-bit variable, the human-computer interaction interface is not generated. Register modification instruction.

Wherein, the human-computer interaction interface is provided with a reverse button for generating a reverse instruction according to a user operation.

The reverse button is used to generate a reverse instruction for different variables to be modified.

The programmable logic controller generates a display update instruction according to the modification result of the variable to be modified, and sends the display update instruction to the digital controller, and the digital controller forwards the display update instruction to the human-machine interaction interface, and the human-computer interaction interface is displayed in the trapezoid according to the display update instruction. The variable to be modified after the inversion operation is displayed in the graph monitoring list page.

In order to solve the above technical problem, a technical solution adopted by the embodiment of the present invention is to provide a numerical control device based on a ladder programming language, the numerical control device includes a processor and a memory, wherein the processor executes the following by running a program stored in the memory. Step: According to the variable selection instruction input by the user, select the variable to be modified among the plurality of control variables displayed on the ladder monitor list page; and perform the reverse operation on the modified variable according to the inversion instruction input by the user.

The processor further performs the following steps: determining whether the variable to be modified is a bit variable before the step of reversing the variable to be modified according to the user's inversion instruction; if the variable to be modified is a bit variable, performing the inversion according to the user The step of the instruction to perform the inverse operation on the modified variable; if it is to be modified If the variable is a non-bit variable, the step of negating the variable to be modified according to the user's negation instruction is not performed.

The processor further performs the following steps: displaying the to-be-modified variable after the negation operation in the ladder monitor list page.

The beneficial effects of the embodiments of the present invention are: in the numerical control system based on the ladder programming language provided by the embodiment of the present invention and the debugging method thereof, the control variable is implemented by performing the inversion operation according to the user's inversion instruction to modify the variable. The modification can effectively reduce the operation steps required for the modification of the control variables during the debugging process, save the operation time required for the modification of the control variables, and effectively avoid the misoperation.

[Description of the Drawings]

1 is a flow chart showing a debugging method of a numerical control system based on a ladder diagram programming language according to a first embodiment of the present invention;

2 is a flow chart showing a debugging method of a numerical control system based on a ladder diagram programming language according to a second embodiment of the present invention;

3 is a schematic block diagram of a numerical control system based on a ladder diagram programming language according to a third embodiment of the present invention;

4 is a schematic block diagram of a numerical control system based on a ladder diagram programming language according to a fourth embodiment of the present invention;

5 is a schematic block diagram of a human-machine interaction interface used in various embodiments of the present invention;

Figure 6 is a schematic block diagram of a ladder diagram monitoring list page used in various embodiments of the present invention.

【detailed description】

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

Referring to FIG. 1, FIG. 1 is a diagram based on a ladder programming language according to a first embodiment of the present invention. Schematic diagram of the debugging method of the control system. The debugging method of this embodiment specifically includes the following steps:

Step 11: selecting a variable to be modified from the plurality of control variables displayed on the ladder monitor list page according to the variable selection instruction input by the user;

Step 12: Perform a reverse operation on the modified variable according to the inversion instruction input by the user;

In step 13, the variable to be modified after the inversion operation is displayed on the ladder monitor list page.

In the above manner, according to the user's inversion instruction, the modified variable is reversed to implement the modification of the control variable, which can effectively reduce the operation steps required for the modification of the control variable during the debugging process, and save the operation time required for the modification of the control variable, and Effectively avoid misuse. It is worth noting that step 13 is not a mandatory step to implement control variable modification.

The steps of the debugging method of the above embodiment will be described in detail below in conjunction with specific application scenarios.

Taking the automatic tool changer (ie, ATC) as an example, the automatic tool changer can automatically change the tool during the machining process to improve the machining efficiency. CNC systems with ATC often control ATC through PLC, and the ladder diagram running in PLC directly reflects the control timing logic of ATC.

In the debugging phase of the above CNC system, it is necessary to manually set the control variables of the ATC, such as adjusting the time of the delay timer, adjusting the rotation position of the cutter head, changing the position of the machine tool, and matching the tool change arm of the ATC.

Taking a typical double-arm automatic tool changer as an example, when the PLC receives a numerical controller (NC) to notify the tool change action, the normal timing of the ATC automatic tool change includes the following steps:

Among them, the action steps indicated by the serial numbers 4-7, 9, and 11-14 need to switch the control variables from 0 to 1 or 1 to 0 during the debugging process. As shown in FIG. 5 and FIG. 6, in the process of modifying the conventional control variables, the user needs to first select the corresponding control in the ladder monitor list page shown in FIG. 6 displayed on the display area 51 by using the variable selection buttons 52-55. Variables, such as the variable R0050.2 shown in the dashed box in Figure 6, and start the variable modification window by operating the ladder monitor list page or the input button set at other positions on the human-machine interface, and then operating the ladder monitor list. The page or the numeric button (0, 1 button) set on the human-computer interaction interface, enter the corresponding number in the variable modification window, and finally operate the confirmation button to complete the input.

However, a reverse button 56 is additionally disposed in the human-computer interaction interface of the embodiment, and only the reverse button 56 needs to be operated after the user selects the corresponding control variable, and is modified according to the operation instruction of the user to the reverse button 56. The variable is reversed to modify the variable to be modified. In a further preferred embodiment, the reverse button corresponding to the inversion operation of the different variables to be modified is the same reverse button. At this time, the user selects different variables to be modified, and only needs to operate the same reverse button to implement different to be modified. Modification of variables. In a further preferred embodiment, the reverse button 56 can be multiplexed with other buttons, such as other buttons such as a selection button, a confirmation button, and the like. At this time, when performing other operations of controlling the variable modification, the reverse button 56 can be used to implement other functions, and when the control variable is modified, the reverse button 56 is used to implement the inversion function.

In addition, in the embodiment, the reverse button 56 adopts a physical button to facilitate frequent operation of the user. In other embodiments, the reverse button 56 can also be implemented by a virtual button such as a graphic button.

Referring to FIG. 2, FIG. 2 is a flow chart showing a debugging method of a numerical control system based on a ladder programming language according to a second embodiment of the present invention. The debugging method of this embodiment specifically includes the following steps:

Step 21: selecting a variable to be modified among the plurality of control variables displayed on the ladder monitor list page according to the variable selection instruction input by the user;

Step 22: Determine whether the variable to be modified is a bit variable; if the variable to be modified is a bit variable, perform step 23; if the variable to be modified is a non-bit variable, step 23 is not performed, and preferably returns to step 21 to wait for the user to re- Select the variable to be modified.

Step 23: Perform a reverse operation on the modified variable according to the inversion instruction input by the user;

In step 24, the variable to be modified after the inversion operation is displayed on the ladder monitor list page.

In this embodiment, by adding step 23, the problem of correcting the error caused by the inversion operation of the variable to be modified of the non-bit variable can be avoided.

Referring to FIG. 3, FIG. 3 is a schematic block diagram of a numerical control system based on a ladder diagram programming language according to a third embodiment of the present invention. The numerical control system of this embodiment includes a human-machine interaction interface 31, a digital controller 32, and a programmable logic controller 34.

In this embodiment, the human-computer interaction interface 31 is configured to display a ladder monitor list page, and select a variable to be modified among the plurality of control variables displayed on the ladder monitor list page according to the variable selection instruction input by the user. For example, the human-computer interaction interface 31 can adopt the design shown in FIG. 5 and further display the ladder diagram monitoring list page shown in FIG. 6.

Further, the human-machine interaction interface 31 receives the negation instruction input by the user, and generates a register modification instruction to send to the digital controller 32, and the digital controller 32 forwards the register modification instruction to the programmable logic controller 33, and the programmable logic controller 33 The variable to be modified is inverted in the register according to the register modification instruction. For example, the human-computer interaction interface 31 is provided with a reverse button 56 as shown in FIG. 5, and is further configured to generate a reverse instruction according to a user operation. Further preferably, the reverse button 56 is capable of generating a negated instruction for different variables to be modified. At this time, when the user selects different variables to be modified, only the same reverse button needs to be operated to implement modification of different variables to be modified.

Further, the human-computer interaction interface 31 determines whether the variable to be modified is a bit variable; if the variable to be modified is a bit variable, the human-machine interaction interface 31 generates a register modification instruction, and if the variable to be modified is a non-bit variable, the human-computer interaction interface 31 No register modification instructions are generated. Therefore, the problem of the modification error caused by the inversion operation of the variable to be modified of the non-bit variable can be avoided.

Further, the programmable logic controller 33 generates a display update instruction according to the modification result of the variable to be modified, and sends the display update instruction to the digital controller 32, and the digital controller 32 forwards the display update instruction to the human-machine interaction interface 31, and the human-machine interaction interface 31 is The display update command displays the variable to be modified after the inversion operation in the ladder monitor list page.

Referring to FIG. 4, FIG. 4 is a schematic block diagram of a numerical control system based on a ladder diagram programming language according to a fourth embodiment of the present invention. The numerical control system of this embodiment includes a processor 41 and a memory 42. The processor 41 and the memory 42 are connected by a bus or other manner, the memory 42 stores a preset program, and the processor 41 executes the following steps by running the program stored in the memory 42: determining whether the variable to be modified is a bit variable; If the variable to be modified is a bit variable, the step of performing a reverse operation on the modified variable according to the user's inversion instruction is performed; if the variable to be modified is a non-bit variable, the user is not executed. The step of negating the instruction to perform the inverse operation on the modified variable.

The steps performed by the processor 41 are the same as those shown in FIG. 1 and FIG. 2, and details are not described herein again.

In summary, those skilled in the art can easily understand that in the numerical control system and the debugging method provided by the above embodiments of the present invention, since the variable is to be reversed according to the user's inversion instruction to implement the modification of the control variable, It effectively reduces the operation steps required for the control variable modification during the debugging process, saves the operation time required for the control variable modification, and effectively avoids misoperation.

The above is only the embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformations made by the description of the invention and the drawings are directly or indirectly applied to other related technologies. The fields are all included in the scope of patent protection of the present invention.

Claims

A debugging method of a numerical control system based on a ladder programming language, characterized in that the method comprises the following steps:

Selecting a variable to be modified from among a plurality of control variables displayed on the ladder monitor list page according to a variable selection instruction input by the user;

And inverting the variable to be modified according to the inversion instruction input by the user.
The method according to claim 1, wherein the step of performing the step of reversing the variable to be modified according to the inversion instruction of the user further comprises:

Determining whether the variable to be modified is a bit variable;

If the variable to be modified is a bit variable, performing the step of performing an inversion operation on the variable to be modified according to the inversion instruction of the user;

If the variable to be modified is a non-bit variable, the step of performing the negation operation on the variable to be modified according to the user's reversal instruction is not performed.
The method according to claim 1, wherein the step of performing an inversion operation on the variable to be modified according to a reversal instruction of the user comprises:

The variable to be modified is reversed according to an operation instruction of the user to the predetermined reverse button.
The method according to claim 3, wherein the inverting button corresponding to the different inversion operations of the variable to be modified is the same inversion button.
The method of claim 1 wherein the method further comprises:

The to-be-modified variable after the negation operation is displayed in the ladder diagram monitoring list page.
A numerical control system based on a ladder programming language, characterized in that the numerical control system comprises a human-computer interaction interface, a digital controller and a programmable logic controller, wherein the human-computer interaction interface is used for displaying a ladder diagram monitoring list page. And selecting a variable to be modified from the plurality of control variables displayed on the ladder monitor list page according to the variable selection instruction input by the user, the human-computer interaction interface further receiving the inversion instruction input by the user, and generating a register modification instruction to send to The digital controller, the digital controller forwards the register modification instruction to the programmable logic controller, and the programmable logic controller performs the to-be-modified variable in a register according to the register modification instruction. Invert the operation.
The numerical control system according to claim 6, wherein the human-machine interaction interface further determines whether the variable to be modified is a bit variable; if the variable to be modified is a bit variable, the person The machine interaction interface generates the register modification instruction, and if the variable to be modified is a non-bit variable, the human-computer interaction interface does not generate the register modification instruction.
The numerical control system according to claim 6, wherein the human-computer interaction interface is provided with a reverse button for generating the reversing instruction according to a user operation.
The numerical control system according to claim 6, wherein the reversing button is configured to generate the negation instruction for different variables to be modified.
The numerical control system according to claim 6, wherein the programmable logic controller generates a display update instruction according to the modification result of the variable to be modified, and sends the display update instruction to the digital controller, and the digital controller The display update instruction is forwarded to the human-computer interaction interface, and the human-computer interaction interface displays the to-be-modified variable after the negation operation in the ladder diagram monitoring list page according to the display update instruction.
A numerical control device based on a ladder programming language, characterized in that the numerical control device comprises a processor and a memory, wherein the processor performs the following steps by running a program stored in the memory:

Selecting a variable to be modified from among a plurality of control variables displayed on the ladder monitor list page according to a variable selection instruction input by the user;

And inverting the variable to be modified according to the inversion instruction input by the user.
The numerical control apparatus according to claim 11, wherein the processor further performs the following steps before the step of reversing the variable to be modified according to the user's inversion instruction:

Determining whether the variable to be modified is a bit variable;

If the variable to be modified is a bit variable, performing the step of performing a reverse operation on the variable to be modified according to the user's inversion instruction;

If the variable to be modified is a non-bit variable, the step of performing the negation operation on the modified variable according to the user's negation instruction is not performed.
The numerical control device according to claim 11, wherein the step of performing an inversion operation on the modified variable according to the user's inversion instruction comprises: performing the to-be-modified variable according to an operation instruction of the user to the predetermined reverse button Invert the operation.
The numerical control device according to claim 11, wherein the inversion button corresponding to the different inversion operations of the variable to be modified is the same inversion button.
The numerical control apparatus according to claim 11, wherein said processor further performs the step of: displaying said variable to be modified after said inverting operation in said ladder diagram monitoring list page.