JPH0217503A - Programmable controller - Google Patents

Abstract

PURPOSE:To improve the operability at the time of a program input by inputting with the key operation of a designating number at the time of a program and converting an applied instruction word displayed by a mnemonic code to the displaying of the operation key number at the time of the input. CONSTITUTION:A programmable controller (PC) provides an indicator 6 composed of a CPU 1, a system program memory 2, a memory 3 for temporary storing, a memory 4 for a user program, and a keyboard 5, and a displaying data storing memory 7 composed of a V-RAM, a keyboard control part 8, an indicator control part 9 and a bus switch 10. The editing input such as the changing insertion of the program is executed by the keyboard 5, an inputted user program is displayed at the indicator 6 and the instruction word is displayed as the mnemonic code. When the program is inputted, the once inputted applied instruction word is inputted again and the displaying picture is changed to the number displaying, the key operation procedure of the applied instruction word is immediately displayed.

Description

Detailed Description of the Invention (Field of the Invention) The present invention relates to a programmable computer equipped with a display device such as a CRT for displaying user program contents, etc.
Regarding the controller.

(Summary of the Invention'ν) This invention makes it possible to convert application instructions in a user program displayed on a display means such as a CRT from a mnemonic code display to a display indicating key operations at the time of input. This facilitates program input operations.

(Prior Art and its Problems) In many programmable controllers (hereinafter simply referred to as PCs), the commands used in the user program include basic commands and applied commands.

The basic command words are the most frequently used basic command words, and each command word has its own dedicated person.

Application command words are commands other than basic command words that are used relatively infrequently, and in today's PCs that require multiple functions, there are over 100 types of application command words.

When programming using basic command words, when the key corresponding to the basic command word is pressed, the input command word is displayed as a mnemonic code on the display screen.

On the other hand, inputting applied commands is usually done by pressing a function key and then pressing the number specified for each command using the numeric keypad. Like the W command, it is displayed as a 21 Moninoku code on the display screen.

In this way, when inputting applied command words, there is no need for a dedicated input key, and the display screen only displays the 21 Moninoku code, and the designated number entered with the numeric keypad is not displayed, making it difficult to use keys. There is a problem where the screen display does not match. Therefore, even when inputting a program that uses many similar application command words, the operator has to input while referring to a comparison table of command words and numbers written in the instruction manual.

(Object of the Invention) This invention has been proposed in view of the above points, and its purpose is to convert application commands input and displayed for program creation into operating keys for inputting the commands. To provide an easy-to-use programmable controller that can be converted into a number display and has improved program input operability.

(Structure and Effects of the Invention) In order to achieve the above object, the present invention includes a display means such as a CRT for displaying an input user program, and a user program displayed on the display means in a 21 Monisoku code. A first display converting means for converting an applied command word inputted by sequentially pressing a plurality of keys among the command words into a display indicating one snack key at the time of input; The converted application command word,
The present invention is characterized by comprising a second display conversion means for converting into a mnemonic code display, and an input means for selectively specifying the operation of each of the conversion means.

The PC of the present invention is capable of converting the applied command word, which is input by key operation of a specified number during programming and displayed in a 21-moninoku code on the display screen, into the display of the operation key number at the time of input. Regarding the applied command words displayed on the screen, the input key numbers can be read out easily without referring to the summary key number comparison table, etc., improving operability when inputting programs. Effects such as improved usability can be obtained.

(Description of Embodiments) FIG. 1 is a block diagram showing the electrical internal configuration of a PC according to the present invention.

As shown in the figure, this PC includes a CPU], a system program memory 2, a time memory 3, a user program memory 4, a keyboard 5, a display 6 consisting of a CRT, and a display consisting of a V-RAM. Data storage memory 7
, a keyboard control section 8, a display control section 9, and a bus switch 10.

The CPU 1 is mainly composed of a microprocessor,
By executing the system program stored in the system program memory 2, various functions of the PC are realized.

The keyboard 5 is used to input edits such as creating a user program, reading out the created program, monitoring, and inserting changes to the program.

On the display 6 consisting of a CRT, user programs input from the keyboard 5 are displayed as shown in FIG. 5, and command words are displayed as 21-Monisoku codes.

The input user program is stored in the display data storage memory 7 in units of frames for display on the display 6.

FIG. 2 is a memory map showing the address allocation of the memory used in this PC.

A temporary storage memory, V-RAM, user program memory, and system program memory are arranged in address order.

Next, regarding the process of rewriting the instruction words of the user program displayed on the display 6, the flowchart of FIG. I will explain next.

Normally, during program input processing, the system programmer stored in the system program memory 2 is
Executed by tJ l. When the user operates the keyboard 5 during execution of this system program, one screen of a designated portion of the user program is read out from the user program memory 4 and temporarily stored in the display data storage memory 7. is displayed on the display 6. At this time, the command words on the display 6, both basic command words and applied command words, are displayed in mnemonic codes as shown in FIG.

Here, in order to change the applied command word being displayed in the mnemonic code to the display of the operation key at the time of input, when a predetermined key operation instructing rewriting is input (Yes at step 301), the display 6 displays the applied command word. Transfers the data for l frames of the screen from the display data storage memory 7 to the save table prepared in the -time storage memory 3 (
Ste.

303).

Next, the instruction word is read from the first address of the transferred save table, and the application instruction word at the first address of the application instruction number table previously provided in the system program memory 2 is successively read and compared (step 304). This application command number table lists application commands and the numbers of keys operated when inputting the application commands. If the two match (Yes at step 305), a check is made to be sure whether the designated number written corresponding to the matched application command is a valid number (step 306). Once the number is confirmed to be legitimate (
At step 306, the applied command read from the save table is converted from a two-check display to a key and item number (step 307), and the corresponding command display data in the V-RAM is replaced (step 308).

Next, 1 is added to the read address of the save table (step 311), and 1 is added to the address that specifies the replacement destination of the instruction word display data stored in the V-RAM (step 312).

Next, step 3 determines whether the added save table or VRAM address exceeds one screen.
13) If the address exceeds one screen, the process ends.

If one screen has not been completed (No in step 313), the process advances to step 303.

If it is determined in step 306 that the number is not valid (No in step 306), the process proceeds to step 311.

If the two do not match in step 305 (step 30
5 (No), adds 1 to the address in the application instruction number table (step 309), and determines whether the added address exceeds the final address (step 310), if the final address in the application instruction number table has ended. If (step 310 is affirmative), the process proceeds to step 311; if the process does not end (step 310 is negative), the process proceeds to step 304.

In step 301, if there is no predetermined key input instructing rewriting (No in step 301), the command word rewriting process is not performed.

When rewriting is performed sequentially through the above processing, the fifth
On the screen shown in the figure, the application command word is rewritten from a two-check display to a key operation number display as shown in FIG.

Next, the process of returning the applied command word converted to the number display to the original knee check display will be explained based on the flowchart of FIG.

When a predetermined key operation instructing rewriting is input (predetermined in step 401), the display data for one screen frame stored in the save table in step 303 described above is sequentially transferred to the V-RAM. Change (step 402
).

The display data transferred here consists of two application command words.
This is data to be displayed by check, and the application command word is converted into a check display each time the display screen is sequentially transferred. When the conversion for one screen is completed (Yes at step 403), the process is completed. Note that step 40
If there is no key input in step 1 (No in step 401), the display continues to display the number as it is.

Conversion key operations in each of the above processes are performed by pressing the keys on the keyboard 5 that instruct conversion to the respective assigned number display or the keys instructing conversion to the two-monitor display, and then press the execution key. Procedures are used. By using two-touch operation, which is the same as other key operations, conversion operations can be performed without any discomfort.

In addition, in the ladder diagrams shown in FIGS. 5 and 6, the number ooo is written above the contact symbol.

~0007 is a number indicating a contact number. Command speaking MO
V>, <XCH>, and <FOO>, <F 02>
The numbers 0100.2000 written above are numbers indicating the operand corresponding to the second word of each instruction word. The numbers 4600.4000 written on the outside of the bus line drawn vertically on the right side are also numbers indicating the operand corresponding to the third word.

By doing this, when inputting the program, -
If you want to re-enter an applied command word that you have previously input, you can convert the display screen that displays the command word etc. into a number display using a keypad, and the key operation procedure for the applied command word will be displayed immediately. be done. Therefore, there is no need to refer to the operation key number comparison table each time an application command word is input, and the efficiency of program input can be improved.

Furthermore, once the input is completed, it is easy to convert again and return to the original 21-monitor display, and the conversion key operability is excellent.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing the electrical internal configuration of the embodiment according to the present invention, Fig. 2 is a memory map showing the memory structure, Figs. 3 and 4 are flow charts showing the operation, and Fig. 5 is rewriting. FIG. 6 is a diagram showing an example of the previous normal screen display, and FIG. 6 is a diagram showing an example of the screen display after rewriting. l...CPU 2...System program memory 3...
- Memory for time storage 4...Memory for user program 5...
・Keyboard 6...Display 7...Display data storage memory 8...
Keyboard control section 9...Display control section lO...Pass switch Fig. 1

Claims (1)

[Scope of Claims] 1. A display means such as a CRT for displaying an input user program, and a command word of the user program displayed in a mnemonic code on this display means by pressing a plurality of keys in order. a first display conversion means for converting an input applied command word into a display indicating an operation key at the time of input; and a first display conversion means for converting the applied command word converted into an operation key display by the display conversion means into a mnemonic code display. A programmable controller comprising: a second display conversion means; and an input means for selectively specifying the operation of each of the conversion means.