JPH04128902A - Programming method and device for programmable controller - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a display method during programming of a programmable controller (hereinafter referred to as PO2).
In particular, the present invention relates to a programming method and a programming device suitable for easy programming.

[Prior Art] The programming device of PO2 converts the sequence program stored in the memory of PO3 into a ladder diagram in which relay contacts are successively connected, and converts this into a CR.
The sequence program is displayed on a T or liquid crystal display screen, and the sequence program is created and edited on this screen. Conventional programming devices, for example as described in Japanese Unexamined Patent Publication No. 56-11502, use a program that is displayed on a screen.
The full size is set to the thickness of each element of the ladder diagram, and the cursor is used to indicate the location where the user changes the ladder diagram character by character.

Then, the user moves the cursor to a desired element position by operating a movement key, and changes the contact symbols of the ladder diagram and their input/output numbers by sequentially inputting them from a keyboard or the like.

However, in this conventional programming device, the size of the displayed cursor is one character, so when making corrections, it is necessary to move the cursor one character at a time. It is inconvenient when doing so. In particular, in a ladder diagram with a large number of relay contacts, if similar relay contacts are consecutive, it may become difficult to know which relay contact is being corrected, or there is a risk that the correct relay contact may be incorrect.

Therefore, in the prior art described in Japanese Patent Application Laid-Open No. 60-221807, the entire line containing the data to be corrected is displayed with high brightness as a cursor designation area on the ladder diagram display screen to correct this. I'm trying to find out if there are any.

[Problems to be Solved by the Invention] The above-mentioned conventional technology has a configuration in which the correction area is specified line by line, but in a ladder diagram where many similar elements exist in a line, it is difficult to grasp the correction area. Accuracy cannot be guaranteed.

Moreover, since the display to be corrected is small, there is a problem that it is difficult to see. Furthermore, set the number of the contact point of a certain relay to 1.
If a character is entered incorrectly, it is not possible to restore just that one character, but there is also the problem that the entire element must be deleted and input from the beginning.

SUMMARY OF THE INVENTION An object of the present invention is to provide a programming method and device that allows a user to easily recognize where he or she is modifying a ladder diagram when inputting or modifying the ladder diagram, and also allows the user to easily modify the ladder diagram. It is in.

[Means for Solving the Problem] The above object is to provide a method for specifying data input points or correction points in a programmable controller programming device that uses a cursor to specify data input points or correction points in a ladder diagram displayed on a screen. Using at least two cursors, specify the entire element that is a component of the ladder diagram with the first cursor (large cursor), and move the details of the specified element within the first cursor with the second cursor (small cursor). ) is achieved.

Further, the above object can be achieved by enlarging and displaying the input/correction area when inputting or correcting data using the small cursor.

Furthermore, the above object is achieved by displaying the display in the large cursor in a larger size than the display in the ladder diagram.

Further, the above object is achieved by moving the cursor to modify data only at the specified modification location, and by using data other than the modification location as is to perform partial modification.

[Effect] By specifying the entire area including the correction part with the large cursor, the operator can see at a glance what part he or she is editing or changing. Then, by enlarging and displaying this area including the corrected part, confirmation becomes easier and more visible. Furthermore, when data is input into that area, the input area is enlarged to make it easier to see. This prevents erroneous input and reduces the burden on the operator. Furthermore, if partial correction becomes possible, only the parts to be corrected need to be corrected, further reducing the burden on the operator.

[Example code] Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a diagram showing a display screen in a programming device of a PC 3 according to an embodiment of the present invention, and shows the entire elements of a ladder diagram. Relay contact 1
It is composed of a total of 63 elements, including 9 columns of 3 and 7 rows of relay coils 14. In FIG. 1, the large cursor 11 moves element by element so that the entire designated element, that is, the entire area surrounded by the large frame, is displayed with high brightness or inverted. This allows the user to see at a glance what he or she is currently trying to correct. Inside this large cursor 11, a small cursor 12 that can be moved one character at a time only within this large cursor is displayed as in the conventional case. For example, if you try to modify the input number x123 of this element to x124 using this small cursor 12,
Move the small cursor 12 to "" and select " from the input device.
You can change it by entering 4”.

FIG. 2 is an example in which a comparison box 23 and an operation box 24, which have become popular in recent years, are displayed as application instructions for a ladder diagram. This comparison box 23 receives an input/output data comparison command, and performs the same operation as a relay contact depending on whether the condition is met or not. Further, the operation box 24 is used to execute an operation when an arithmetic operation instruction is input and the conditions of the ladder diagram before and after the operation box 24 are satisfied.

In programming using such boxes, specify each box as a whole with the large cursor 21, and use the large cursor 2
Display the area within 1 with high brightness or reverse it. Then, using the small cursor 22 that can move only within the large cursor 21, a comparison command or the like can be input into the large cursor 21, that is, into the box.

Next, the operations of the large cursor and small cursor will be explained with reference to FIGS. 3 to 6. FIG. 3(a) is a diagram showing a cursor key operation procedure corresponding to a relay contact. State numbers StO to St shown in the upper part of FIG. 3(a)
The actual display inside the large cursor in 2 is shown in correspondence with FIG. 3(b). First, the cursor is moved to a desired element position by operating the cursor movement key using the large cursor. At this point, the state StO is displayed,
The area within the large cursor is displayed with high brightness or inverted. Next, if you want to make the relay contact a b contact, press the b contact symbol key "F2". Note that a symbol key is determined for each element type, and by pressing the symbol key, a desired element can be specified. In this embodiment, a function key is used as this symbol key. Elements corresponding to each of the function keys F1 to FIO are displayed, for example, at the bottom of the screen in FIG. 8(a).

In the above example, pressing the "F2" key will cause the third
In the state shown in the middle diagram of Figure (b), an area for inputting an input number is displayed below the b-contact symbol. In this state, input the input number using the small cursor. This input operation results in the upper side of ll10NO,J shown in FIG. 3(a). After inputting the input number, by pressing the "return" key, the state shifts to step) Si2. This results in
The input number data moves above the b contact symbol, and input for this element is completed.

FIG. 3(C) is an explanatory diagram showing the correction process when the input number should have been x123 but x423 has been input. Move the small cursor two characters to the left and select “
Move the small cursor under "4". Then, press the number key "1" in the overwriting state to correct the input number. In this case, correct it by pressing the keys three times. is completed. In the conventional case, if you delete all the incorrect input numbers and enter all the correct input numbers, or move the cursor two characters to the left, the character you moved will be deleted and the characters will be "1", " I had to re-enter ``2'' and ``3''.

Figure 4(a) shows the key operation procedure when the large cursor is moved to the comparison box, and Figure 4(b) shows the key operation procedure when the large cursor is moved to the comparison box.
FIG. 3 is a diagram illustrating an example of a screen display corresponding to states St, , St1, and Si2 shown on the upper side of FIG.

First, move the large cursor to the desired element position (S t O) and press the symbol key "F3" indicating the comparison box. This causes a transition to state Stl. Next, move the small cursor in the same way as in Fig. 3(a) (not shown in Fig. 4, and also omitted in the following Figs. 5 and 6) and enter a comparison command. do. and,"
When the "Return" key is pressed, the state shifts to state St2,
The above comparison instruction is displayed in a box.

Figure 5(a) shows the key operation procedure when the large cursor is moved to the relay coil, and Figure 5(b) shows the key operation procedure when the large cursor is moved to the relay coil.
This is an example of a screen display corresponding to the states sto, st1, and Si2 shown above. Moreover, FIG. 6(a) shows the key operation procedure when the large cursor is moved to the calculation box,
FIG. 6(b) is the state StO shown in the upper part of FIG. 6(a).
, Stl.

This is an example of a screen display compatible with Si2. Figure 3 ~ This 6th
As shown in the figure, on the input screen (state St2), the input canister is greatly expanded to make it easier to input input numbers, comparison commands, etc. This is so that data can be easily modified using a small cursor.

Furthermore, an embodiment that facilitates modification of input data is shown in FIG. In this example, the cursor display is in state St.
When it reaches 1, the display becomes even larger than that shown in FIG. 3(b). In the display indicated by reference numeral 1b in FIG. 8(a), both the contact symbol and the input number are displayed in double size, making it easier to recognize the input position and confirm the input data.

FIG. 7 is a configuration diagram of PO2 according to an embodiment of the present invention. Note that in this figure, the PO2 and the programming device are configured separately, but it goes without saying that the programming device may be configured as a part of the PO2. In this embodiment, the programming device uses the CRT 75 by the CPU 71.
When displaying the screen, the display of the large cursor and small cursor is controlled as described above, a ladder diagram is created by the user's input from the keyboard, and the ladder diagram is stored on the hard disk. When a series of programs is completed, the CPU 71 transfers the program to the PC 8 main body 80 via the serial interface 79 in response to a key operation by the user.

The above has described an example in which a dog cursor and a movable small cursor are provided in PO2, but the convenience of providing large and small cursors like this can also be applied to other data processing devices such as CAD systems. It goes without saying that it is effective.

[Effects of the Invention] According to the present invention, since a large cursor and a small cursor that moves within the large cursor are provided, there are fewer input errors and less fatigue than in the past.

In addition, since it is possible to partially correct input information, the number of manual keystrokes can be reduced, which also has the effect of reducing fatigue.

[Brief explanation of the drawing]

FIG. 1 is a display screen diagram of a programming device according to an embodiment of the present invention, FIG. 2 is a ladder diagram display screen diagram,
FIGS. 3(a), (b), and (c) are key operation procedure diagrams, display screen diagrams, and operation screen procedure explanatory diagrams for cursor display of relay contacts, and FIG. 4(a). (b) is a key operation procedure diagram and display screen diagram for the cursor display of the comparison box, Figure 5 (a), (b) is a key operation procedure diagram and display screen diagram for the cursor display of the relay coil, and Figure 6
Figures (a) and (b) are key operation procedure diagrams and display screen diagrams for the cursor display of the calculation box, Figure 7 is a configuration diagram of PO2 according to an embodiment of the present invention, and Figures 8 (a) and (b). ) is an enlarged view of the entire screen with the cursor displayed and a view of the input screen. 11.21... Large cursor, 12.22... Small cursor, 13... Relay contact, 14... Relay coil, 23... Comparison box, 24... Calculation box. Agent Patent Attorney Tadashi Akimoto Jishuzu (Q) Sai (Katsu's X Force F! Mother ON-Modern Works Diagram (b) Cursor Display Scissor Diagram ((1) Piece" Sentence Box/)> Key of Power, Reproduction (b) Cutting display diagram +4

Claims (1)

[Claims] 1. In a programming method for a programmable controller in which data input points or correction points in a ladder diagram displayed on a screen are specified with a cursor, at least two cursors are used to specify the data input points or correction points. Programming of a programmable controller characterized in that the entire element that is a component of a ladder diagram is specified with a first cursor, and details of the specified element are specified with a second cursor that moves within the first cursor. Method. 2. In a programmable controller programming method that uses cursors to specify data input points or correction points in a ladder diagram displayed on the screen, at least two cursors are used to specify data input points or correction points. Specify the entire component element with the first cursor, specify the details of the specified element with the second cursor that moves within the first cursor, and use the second cursor to input or modify data. A method for programming a programmable controller, characterized by enlarging and displaying an area to be input and corrected. 3. In a programmable controller programming method that uses cursors to specify data input points or correction points on a ladder diagram displayed on the screen, at least two cursors are used to specify data input points or correction points. Specify the entire component element with the first cursor, specify the details of the specified element with the second cursor that moves within the first cursor, and enlarge the element when specifying the element with the first cursor. A method of programming a programmable controller characterized by displaying the information. 4. In the programmable controller programming method where data input points or correction points in the ladder diagram displayed on the screen are specified with a cursor, when modifying input data, only the portion of the data to be corrected specified with the cursor is partially corrected. A method for programming a programmable controller. 5. In a programming device for a programmable controller that uses a cursor to specify a data input point or a correction point in a ladder diagram displayed on a screen, a first cursor specifying means for specifying an element that is a component of the ladder diagram; a second cursor specifying means for specifying details of an element specified by the first cursor. 6. In a programming device for a programmable controller that uses a cursor to specify a data input point or a correction point in a ladder diagram displayed on a screen, a first cursor specifying means for specifying an element that is a component of the ladder diagram; means for specifying a second cursor that moves within the cursor and specifies details of the element specified by the first cursor; and means for enlarging and displaying the area to be input or corrected when inputting or correcting data using the second cursor. A programming device for a programmable controller, comprising: 7. In a programming device for a programmable controller that uses a cursor to specify a data input point or a correction point in a ladder diagram displayed on a screen, a first cursor specifying means for specifying an element that is a component of the ladder diagram; A programmable device characterized by comprising means for specifying a second cursor that moves within the cursor and specifies details of an element specified with the first cursor, and means for enlarging and displaying the element when the element is specified with the first cursor. Controller programming device. 8. Specify the data entry point or correction point in the ladder diagram displayed on the screen with the cursor When modifying input data in a programmable controller programming device, only the part of the data to be corrected specified with the cursor can be partially corrected. 1. A programming device for a programmable controller, comprising means for: 9. When editing data displayed on the screen, in a data processing method that specifies the editing area with the cursor, specify the editing area, enlarge it, and specify the data within this specified area one character at a time with the cursor. A data processing method characterized by editing. 10. In a data processing device that specifies an editing area with a cursor when editing data displayed on a screen, a first cursor specifying means for specifying an editing area, and a first cursor specifying means that moves within the first cursor and specifies an editing area with the first cursor. A data processing device comprising second cursor designation means for designating data to be edited in the area one character at a time.