CN103995682A - Program display system of programmable logic controller and programmable logic controller - Google Patents
Program display system of programmable logic controller and programmable logic controller Download PDFInfo
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- CN103995682A CN103995682A CN201310054982.8A CN201310054982A CN103995682A CN 103995682 A CN103995682 A CN 103995682A CN 201310054982 A CN201310054982 A CN 201310054982A CN 103995682 A CN103995682 A CN 103995682A
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Abstract
The invention discloses a program display system of a programmable logic controller and the programmable logic controller comprising the program display system. The program display system comprises a program view display module, a program view adjustment module and a program level switching module. Due to the fact that the program display system can display the overall view of a user program on a display screen of the PLC, users can check and modify functional block of the user program conveniently, and it is made convenient for the users to run and understand the user program.
Description
Technical field
The present invention relates to automation field, particularly the program display system of a kind of programmable logic controller (PLC) (PLC) and corresponding programmable logic controller (PLC).
Background technology
The module itself of a lot of programmable logic controller (PLC)s without screen display, now cannot check the user program functional block of PLC on the market.Even have some PLC products in module with LCD display, but therefore owing to can only show at most a functional block on display screen at every turn, on display screen, check that user program also can only browse per-feature basis piece.That is to say, when user wishes to check on display screen or revises certain concrete program function piece, can only be from first functional block being connected with lead-out terminal or intermediate terminal, then per-feature basis piece ground switches, until find this functional block, have no other way.
And user can only see current functional block and connection thereof on display screen, cannot see the macrostructure of whole user program and the integrated connection situation between major function piece.These drawbacks bring very big inconvenience can to user's operation and understanding, particularly the in the situation that of user program more complicated.
Summary of the invention
In view of this, the object of the invention is to propose a kind of program display technology of programmable logic controller (PLC), make the Global Information at the demonstration screen display user program of PLC, facilitate checking and revising of user to user program function piece, to user, operate and understand user program and provide convenience.
According to an aspect of the present invention, provide a kind of program display system of programmable logic controller, described program display system comprises: program view display module, program view adjusting module and program level handover module, wherein,
Described program view display module, for showing program overview and other each level view of user program on PLC display;
Described program view adjusting module, adjusts for the visibility region of this program overview to shown on PLC display; And
Described program level handover module, carries out level switching for the view to shown on PLC display.
Preferably, when user starts described program display system, first described program view display module shows this program overview of user program on PLC display, and this program overview comprises all functions piece of user program and the logic connecting relation between these functional blocks.
Preferably, described program view display module be embodied as one can be at the display engine of any pixel output arbitrary graphic of PLC display.
Preferably, described program view adjusting module is embodied as the function of on PLC display, this visibility region being adjusted to all directions, from hardware, comprise the button of " up/down/left/right " on PLC control panel, this button is embodied as the contact position in button or touch-screen.
Preferably, described program display system can further comprise that a moving step length arranges module, the moving step length that described moving step length arranges module when this visibility region is adjusted to all directions for adjust described program view adjusting module according to user's request.
Preferably, when described program view adjusting module is adjusted to a direction this visibility region, the cursor focus on PLC display screen also can be switched to from original functional block the next functional block that the party makes progress.
Preferably, the handoff functionality between the level that this program level handover module is program view, realizes and comprises " OK " and " ESC " button on PLC control panel from hardware, and this button can be embodied as the contact position in button or touch-screen.
Preferably, when described program level handover module is switched to after the required view of user, described program view display module is presented at this view after switching on PLC display.
According to another aspect of the present invention, also provide a kind of programmable logic controller (PLC), comprise said procedure display system.
From such scheme, can find out, because program display system of the present invention can be in the overview of the demonstration screen display user program of PLC, facilitated fast the checking and revising of user to user program function, to user, operated and understand user program and provide convenience simultaneously.
Accompanying drawing explanation
To the person of ordinary skill in the art is more clear that above-mentioned and other feature and advantage of the present invention by describing the preferred embodiments of the present invention in detail with reference to accompanying drawing below, in accompanying drawing:
Fig. 1 is an example of PLC program display system of the present invention display routine overview on PLC display;
Fig. 2 is an example of the visibility region of PLC program display system of the present invention adjustment programme overview on PLC display;
Fig. 3 is another example of PLC program display system of the present invention display routine overview on PLC display;
Fig. 4 is the example that PLC program display system of the present invention is carried out visibility region adjustment in the program overview shown in Fig. 3;
Fig. 5 A and 5B are the examples that PLC program display system of the present invention is carried out level switching in the program overview shown in Fig. 4.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, the present invention is described in more detail by the following examples.
The program display system of PLC is provided in the specific embodiment of the invention, and this program display system specifically comprises: program view display module, program view adjusting module and program level handover module.Wherein, this program view display module can show program overview and other each level view of user program on PLC display, this program view adjusting module can be adjusted the visibility region of this program overview shown on PLC display, and this program level handover module can carry out level switching to view shown on PLC display.
Below, just 1-5 describes in detail to each module and function thereof in PLC program display system of the present invention by reference to the accompanying drawings.
Meet the demand that user conveniently checked and revised user program functional block, can be by showing that on PLC display the mode of user program Global Information realizes.Therefore, PLC program display system of the present invention comprises a program view display module, and it can show the program overview of user program when user starts this program display system on the screen of PLC display.This program overview comprises all functions piece of PLC user program and the logic connecting relation between these functional blocks.In a preferred embodiment of the invention, this program view display module is embodied as one can export at any pixel of PLC display the display engine of arbitrary graphic.
Fig. 1 is an example of this program view display module display routine overview on PLC display.Can find out, because one of them fundamental purpose of the present invention is to show the Global Information of user program, so each program function piece only need to just can with very little graphical symbol representative.Like this, user just can once check a plurality of functional blocks and logic connecting relation thereof on the display screen of PLC.
In program overview, the position arrangement rule of all functions piece can be: each lead-out terminal is positioned at the rightest end of its place program line, and as " tree root ", it is capable that first lead-out terminal is positioned at first program, follow-up being arranged in order.Left side in each output, is connected to input in functional block with straight line.By this way, the related functional block of each lead-out terminal connects will take a program line, or several continuous program lines, input terminal and functional blocks couple together one by one until arrive at lead-out terminal, form picture and take the program tree that lead-out terminal is root.This arrangement can allow user understand at an easy rate the structure of whole user program, and can find like a cork and want certain concrete function piece of checking or revising.For example, in Fig. 1, lead-out terminal Q1 is positioned at the rightest end that first program is capable, as " tree root ", this lead-out terminal Q1 is connected by straight line with the input function piece B1 in its left side, functional block B1 is connected by straight line respectively with I2 with the input function piece I1 in its left side again, thus, two continuous programs that above-mentioned these functional blocks take in program overview are altogether capable, form to take the program tree that lead-out terminal Q1 is root.
In general, PLC user program is all comparatively complicated, program overview is conventionally large than the on-screen display (osd) area of PLC display, therefore only have a part corresponding with on-screen display (osd) area in program overview can directly output on display screen and check for user, in the present invention, this part program overview is called to " visibility region ".In order to check more all sidedly and prehension program overview, PLC program display system of the present invention comprises a program view adjusting module, and it can be adjusted the visibility region of this program overview shown on PLC display.In a preferred embodiment of the invention, this program view adjusting module is embodied as the function of on PLC display, this visibility region being adjusted to all directions, the general button that can comprise " up/down/left/right " on PLC control panel from hardware, this button can be embodied as the contact position in button or touch-screen.
Fig. 2 is an example of the visibility region of this program view adjusting module adjustment programme overview on PLC display.In the first half of Fig. 2, dotted line frame has comprised whole program overview, because the on-screen display (osd) area of PLC display is limited, current only have on-screen display (osd) area in solid box directly to be outputed on display screen to check for user, and this visibility region has comprised I2, I3, B4, B5, B6, B7 and B8 supervisor functional block.When user need to check the functional block of visibility region below in program overview, user can press " downwards " button to start the function of this program view adjusting module.As response, the border integral body of on-screen display (osd) area moves downwards, makes the part of relative below in calling program overview be called visibility region, thereby has realized the adjustment to visibility region.As shown in the latter half of Fig. 2, current visibility region has comprised I3, I6, B5, B6, B7 and B8 supervisor functional block.
With example class in Fig. 2 seemingly, another example that Fig. 3-4 show on PLC display display routine overview and its visibility region is adjusted.As seen from Figure 4, when user presses " up/down/left/right " button, the border of on-screen display (osd) area will make progress/down/left/move right, thus the part visibility region of new corresponding program overview will be output on display screen.In this process, the phenomenon that user sees is that program overview has moved a bit, thereby user has seen another part region of program overview.Preferably, when user uses " up/down/left/right " button to adjust visibility region, cursor focus on PLC display screen also can be switched to from original functional block the next functional block of top/below/left/right-hand, is beneficial to the follow-up functional block that enters into cursor focus place this functional block is browsed and edited.
For the convenient adjustment for visibility region in program overview, in program overview, the position arrangement rule of all functions piece can be: the interval between functional block is all fixing between all upper and lower program lines and in program line, form the ranks program overview that all rule alignment is arranged, as shown in Figure 2 or Figure 3.Simultaneously, when program view adjusting module carries out up/down adjustment to the visibility region of program overview, each moving step length of adjusting can be stipulated as the interval between upper and lower program line, similarly, when program view adjusting module carries out left/right adjustment to the visibility region of program overview, each moving step length of adjusting can be stipulated as the interval between functional block in program line.Being provided with is like this beneficial to user to the operation of program overview and understanding.Preferably, PLC program display system of the present invention can further comprise that a moving step length arranges module, and it can make flexible adjustment to above-mentioned moving step length according to user's request.
For each program function piece shown in program overview is edited or is done further and browse, PLC program display system of the present invention comprises a program level handover module, and it can carry out the switching of program level to view shown on PLC display.Because program overview has embodied the Global Information of user program, this view is the superiors' view in all program views in the present invention, the view that embodies each functional block details is the lower floor's view with respect to this one-tenth figure overview, especially when user program complexity and while comprising further level in functional block, this lower floor's view may comprise many levels view comparatively itself.This program level handover module can mutually switch between program overview and all lower floors view, usings the required program view of user as the view that should be presented on PLC display.Afterwards, the program view display module of realizing view Presentation Function can be presented at this view after switching on PLC display.In the preferred embodiment of the present invention, handoff functionality between the level that this program level handover module is program view, from hardware is realized, can comprise " OK " and " ESC " button on PLC control panel, this button can be embodied as the contact position in button or touch-screen.
Fig. 5 A and 5B show the example that this program level handover module carries out level switching on the program overview basis shown in Fig. 4.As shown in Figure 5A, when the program function piece B1 of user by the form selection procedure overview such as cursor focus, " OK " button that user presses this program level handover module can switch to view shown on PLC display lower one deck view, to show the details of selected this functional block B1, user just likely edits and further browses this functional block like this.Afterwards, " ESC " button that user presses this program level handover module can switch view shown on PLC display backhaul order overview.Similarly, as shown in Figure 5 B, " OK " button that user can be by this program level handover module and " ESC " button switch having selected between the program overview of functional block B3 and lower one deck view of Presentation Function piece B3 details.Certainly, if lower floor's view of Presentation Function piece B1/B3 also exists the more view of lower floor in Fig. 5 A and 5B, user can further be switched in these views by this program level handover module.
By above-mentioned embodiment, can find out, by program display system of the present invention, user can check by display routine overview the Global Information of whole user program on PLC display screen, even if on-screen display (osd) area can not once show lower complete user program overview, user also can adjustment programme overview visibility region, to obtain program overview information.Meanwhile, user can see switching at different levels program view, thereby checks or update routine functional block details.In addition, the functional block in program overview is arranged with tree structure, contributes to very much the understanding of user to program structure.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (9)
1. a program display system for programmable logic controller (PLC), is characterized in that, described program display system comprises: program view display module, program view adjusting module and program level handover module, wherein,
Described program view display module, for showing program overview and other each level view of user program on PLC display;
Described program view adjusting module, adjusts for the visibility region of this program overview to shown on PLC display; And
Described program level handover module, carries out level switching for the view to shown on PLC display.
2. program display system according to claim 1, it is characterized in that, when user starts described program display system, first described program view display module shows this program overview of user program on PLC display, and this program overview comprises all functions piece of user program and the logic connecting relation between these functional blocks.
3. program display system according to claim 1, is characterized in that, described program view display module is embodied as one can export at any pixel of PLC display the display engine of arbitrary graphic.
4. program display system according to claim 1, it is characterized in that, described program view adjusting module is embodied as the function of on PLC display, this visibility region being adjusted to all directions, from hardware, comprise the button of " up/down/left/right " on PLC control panel, this button is embodied as the contact position in button or touch-screen.
5. program display system according to claim 1, it is characterized in that, described program display system can further comprise that a moving step length arranges module, the moving step length that described moving step length arranges module when this visibility region is adjusted to all directions for adjust described program view adjusting module according to user's request.
6. program display system according to claim 1, it is characterized in that, when described program view adjusting module is adjusted to a direction this visibility region, the cursor focus on PLC display screen also can be switched to from original functional block the next functional block that the party makes progress.
7. program display system according to claim 1, it is characterized in that, handoff functionality between the level that this program level handover module is program view, from hardware, realize and comprise " OK " and " ESC " button on PLC control panel, this button can be embodied as the contact position in button or touch-screen.
8. program display system according to claim 1, is characterized in that, when described program level handover module is switched to after the required view of user, described program view display module is presented at this view after switching on PLC display.
9. a programmable logic controller (PLC), comprises the program display system as described in any one in claim 1-8.
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