JPS6217244B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a sequence creation device on a display screen that allows the position to be quickly specified when displaying a specific type of graphic pattern at an arbitrary position on a display screen using a liquid crystal or CRT. It is related to.

For example, in a stored program type sequence control device (so-called programmable controller), input signals are processed by a sequence control program, and the controlled object is controlled using the processing results. For example, control programs are created using a sequence creation device that uses a programming method, such as a CRT programming panel.

FIG. 1 shows the schematic configuration of a sequence creation device and a stored program type sequence control device in which this method is adopted. According to this, the sequence control device 1 receives signals output from various pushbutton switches, limit switches, etc., which are monitored objects on the side of the controlled object, to the input section 1.
is input into the control calculation unit 3 via the control calculation unit 3.
performs arithmetic processing on these signals according to the sequence control program read out from the storage unit 5, and the result of the arithmetic processing is sent to the controlled object side via the output unit 4, thereby controlling the electromagnetic switch, etc. The controlled object is controlled. As described above, the sequence control program is stored in advance in the storage unit 5, but the creation and storage of the sequence control program in the storage unit 5 is performed by the sequence creation device 6.

The sequence creation device 6 is generally controlled by a microcomputer and mainly functions to create a sequence control program and store it in the storage unit 5. It also functions to read out the sequence control program currently in use and display it as a sequence diagram on the CRT display screen 15, and to save and store the sequence control program created or read out from the storage unit 5 in an external storage device.

That is, as shown in FIG. 2, the operation unit 14 is provided with a sequence element key group 16, a cursor movement operation key group 22, and various operation keys 23 such as a numeric keypad as required. When creating , keys included in the sequence element key group 16 and the cursor movement operation key group 22 are mainly operated. When the cursor movement operation keys are operated, the cursor position on the display 15, which is the main component of the display unit 12, is moved in the direction of the arrow displayed on each key.
The cursor is moved to a predetermined position and one of the sequence element keys is operated. When a sequence element key is operated, the display code corresponding to that key is written to the memory part corresponding to the cursor position on the memory 10 via the sequence editing section 13, while the display control section 11 writes the display code based on the display code. A display graphic pattern signal is generated, and the sequence element corresponding to the key is displayed as a symbol at the cursor position on the display screen of the display 15. The sequence element keys are the a contact key 17, the b contact key 18, the output coil key 19,
Consisting of a horizontal connection line key 20 and a vertical connection line key 21, if a sequence element key is operated appropriately each time a cursor movement operation key is operated, a sequence diagram with so-called contact symbols is displayed on the display 15, and the memory A display code is written in 10 in a predetermined state. Therefore, if the operation unit 14 instructs the storage of the sequence control program in the storage unit 5 upon completion of sequence diagram creation, the display codes sequentially read out from the memory 10 will be stored in the sequence diagram along with the input/output numbers.
The program is stored in the storage section 5 as a sequence control program via the machine language conversion section 9 and the interface section 7. In addition, when changing the sequence control program, the sequence control program read from the storage section 5 is stored in the memory 10 via the interface section 7 and the machine language-sequence diagram conversion section 8, and the sequence control program is stored on the display 15. is now displayed as a sequence diagram. In this state, use the cursor movement operation key to move the contents of memory 10.
The sequence control program can be easily changed by operating the sequence element keys.

As mentioned above, when creating or changing a sequence control program, conventional cursor movement operation keys are not only operated frequently in the up/down and left/right directions, but also sequence element keys are also operated frequently accordingly. For this reason, with conventional sequence creation devices, it takes a lot of time to create or change a sequence control program. In other words, if the display position on the display screen can be specified easily, quickly, and intuitively, such problems can be considerably reduced.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a device that allows a user to quickly specify a display position on a display screen by direct manipulation.

For this purpose, the present invention arranges a plurality of position designation keys vertically and horizontally, each corresponding to each predetermined display position on the display screen, and directly designates the display position with one key. It is configured so that it can be obtained. Further, the present invention enables graphic (symbol) patterns to be input from any efficient position by operating the position designation keys and symbol keys configured as described above.

The present invention will be explained below. FIG. 3 is a sequence diagram for one circuit to be created and displayed. In this example, one circuit is composed of three lines. 24 is the input number indicating the input terminal, 25 is the output number indicating the output terminal, 26 is the symbol of the relay's a contact (normally open contact), 27 is the symbol of the relay's b contact (normally closed contact), and 28 is the external drive unit (coil) symbol, 2
Reference numeral 9 denotes connecting lines that vertically and horizontally connect the above-mentioned symbols.

FIG. 4 is a block diagram of an embodiment of the present invention, in which the same parts as in the conventional example are given the same reference numerals. A memory 30 has a capacity for the number of symbols that can be set on the screen 5 of the display unit 12, and stores symbol information and its coordinate information at the same time. Reference numeral 31 denotes an operation section, as shown in FIG. 5, a sequence element input section 34 consisting of various symbol keys 17 to 21 and various element input keys 35 to 38, and coordinate input sections arranged vertically and horizontally corresponding to the matrix of the sequence diagram. keys 32a, 32
It has a coordinate input section 32 in which symbols b and 32c are arranged, and various operation keys 22 such as a numeric keypad. Horizontal and vertical coordinate input keys 32a and 32, respectively
A basic symbol mark common to each contact (same as the a contact) and a connection line mark are attached to the tops of contacts b and 32c.

33 is a sequence editing section that receives signals from the symbol key and coordinate key and stores these signals in the memory 30.
Place it in the specified position.

FIG. 6 is a wiring diagram of each coordinate input key. Each key is arranged at an intersection of a matrix, and when pressed, conducts through this intersection. Pulse generated from counter C
T ₁ and T ₂ are encoder E and acquisition circuit D, respectively.
from the encoder E to the time-division signal S1.
-S32 are generated, and time-division capture signals _D1 to _D8 are generated inside the capture circuit D. Here, it is configured such that one set of capture signals D ₁ to D ₈ is generated every time one pulse signal (for example, S1) is generated from the encoder E. Therefore, for example, if the upper left intersection in FIG. 6 is pressed while the signal S1 is being generated, the signal S1 is transmitted via the wire N1, is captured at the timing of the capture signal _D1 , and is sent to the editorial department. 33.

Next, the operation will be explained by taking as an example the case where the sequence diagram shown in FIG. 3 is created. Key operations can be started from any symbol that is most efficient when creating by looking at the sequence diagram in FIG. For example, if we consider the case where only the B contact is input first and then the A contact is input, the key operation method is as follows.

(1) Symbol key 18, coordinate input keys A, B, setting key 39 (2) Symbol key 17, coordinate input keys C, D,
E, H, G, Setting key 39 (3) Symbol key 19, coordinate input key, setting key 39 In this case, the symbol information output from the symbol key is latched in the latch circuit 50 until the setting key 39 is pressed. .

This completes the settings for the symbols other than the connection lines and input/output numbers in the sequence diagram in Figure 3. Similarly, specify the vertical and horizontal differences for the connection lines, and press the coordinate input keys for the setting positions for each. Just press them one after another.

Regarding the end of the operation in (1) above, the information input from the operation section is transmitted to the sequence editing section 33, where the symbol information is converted into a symbol display code by the decoding function, and the coordinate information is converted into the above-mentioned coordinate information. The symbol display code is converted into a transfer timing signal to the memory 30, and the symbol display code is successively stored in a predetermined position in the memory 30.
This condition is shown in FIG. 7, with the eighth position in row 301 and the fourth
The symbol display code of the b contact is stored in the th position. The contents of the memory 30 are displayed on the display section 1.
2, the images are sequentially displayed in the form shown in FIG.

If you want to set the input number, enter the input number setting key and the coordinate input keys in this order, set the letter X to all contact symbols, and then enter the number from the numeric keypad in the various operation keys 22. good. This also applies when setting the output number.
These input/output numbers are also handled in the same way as symbol information and are stored in the memory 30 via the editing section 33.

When the sequence diagram for one circuit (the sequence diagram shown in FIG. 3) is completed as described above, the contents are written from the memory 30 to the storage section 5 of the SC via the conversion section 9.

When changing the sequence program written in the storage section 5, return this program to the memory 10 in the form of a display code, display it on the display section 15, press the delete key 40 and the coordinate input key to be deleted in that order. Delete the symbol at that coordinate. Then, re-input may be performed in the same manner as the sequence input described above.

As mentioned above, to set and delete a sequence, you only need to press the symbol key or delete key and then press the coordinate input key, so specifying the coordinates of one place can be done with one coordinate input key, and the same When inputting symbol information, it is only necessary to operate the symbol key once, so unlike the conventional method, one symbol input key operation and multiple coordinate input key operations are required for each symbol information setting. Compared to , the number of key operations is significantly reduced. In addition, the coordinate input keys are arranged in a matrix to correspond to the sequence diagram, so you can directly specify coordinates while looking at the sequence diagram to be set. Sequence input can be performed by comparing only the operation section and the sequence diagram, and since it is possible to start from a symbol or position that is easy to input in the sequence diagram, it is possible to input the sequence diagram in an efficient manner.

Furthermore, for the same reason as above, the sequence diagram can be modified very easily.

Note that the configuration of the coordinate input section is that instead of arranging each key individually, a conductive rubber plate is placed, each contact is arranged below it, and the sequence is placed on the conductive rubber plate corresponding to each contact. If each symbol element of the matrix is printed on a conductive rubber plate so that each symbol element is aligned with the other, and when a key is operated, each contact point is selectively closed by pressing the position of each symbol element with a finger or an operating stick. The space factor for the keys is improved, and the control panel can be made smaller considering the large number of keys.

As is clear from the above description, according to the present invention, when setting a sequence diagram, the number of key operations can be reduced, the work time can be shortened, and the operator can directly specify coordinate keys on the operation unit. Furthermore, the sequence input can be simplified since the input order can be started from a position that is easy to input depending on the personality of the operator and the structure of the sequence diagram to be input. Therefore, even people who are not programming experts can make full use of this device, which greatly contributes to the spread of this type of sequence controller and has great effects.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a conventional sequence creation device, FIG. 2 is a schematic diagram of its operating section, FIG. 3 is a relay sequence diagram, FIG. 4 is a block diagram of a sequence creation device according to an embodiment of the present invention, and FIG. The figure is a detailed diagram of the operating section, Figure 6 is a wiring diagram of the operating section, and Figure 7 is a detailed diagram of the operating section.
The figure is a diagram showing a storage state in a memory. 24-29: Sequence element, 17-21,3
5 to 38: sequence element input section, 32: coordinate input section, 32a, 32b, 32c: coordinate input keys,
30: Memory, 33: Editorial Department. 50: Latch circuit.

Claims (1)

[Claims] 1. A sequence element input section for inputting symbol information of a sequence element, a coordinate input section for inputting coordinate information of the symbol, a latch circuit for latching the symbol information input at the sequence element input section, and a latch circuit for latching the symbol information input at the sequence element input section. an editing section that arranges symbol information latched in the latch circuit to a plurality of coordinates successively inputted from the coordinate input section between the time when the latch is released and the symbol information that is latched in the latch circuit; It is equipped with a memory that stores data in an arranged state, and a display section that displays the contents of this memory in the form of a sequence diagram.The coordinate input section has a plurality of coordinate input keys arranged in correspondence with predetermined symbol positions. Sequence creation device.