KR20020070529A - A keyboard of instruction inputting for programmable logic controller using shortened instruction code - Google Patents

Abstract

PURPOSE: A keyboard device for abbreviate input of a PLC(Programmable Logic Controller) control command is provided to minimize an input error and an input time of a control program by quickly and accurately inputting an operation program of the PLC applied to a general industry control device or a lift device using a short cut. CONSTITUTION: A key matrix input unit(23) receives the key input of a keyboard user. A keyboard controller(24) performs a key scan work and a code conversion for judging whether key input information is provided from the key matrix input unit(23), determines an abbreviated mode/normal mode, reads an instruction corresponding to a short cut, and outputs the read instruction. An O/S memory(25) provides a basic operation bias of the keyboard controller(24). An abbreviated command DB memory(27) stores an instruction corresponding to the shot cut code value. An output port(26) transmits the instruction corresponding to the short cut value generated in the keyboard controller(24) to a loader body side.

Description

A keyboard of instruction inputting for programmable logic controller using shortened instruction code}

The present invention relates to a loader-only keyboard for inputting an operating program of a programmable logic controller (PLC) applied to a general industrial controller or a living device, and in particular, a keyboard coupled to the loader for a series of sequence control for the controller. By entering the control order and condition using the shortcut keys when entering the control order and condition for the local PC, it is possible to drastically reduce the programming input time and reduce the possibility of error in the command input. A keyboard device for shortcut input.

Many facilities and mechanical control devices used in everyday life and industrial sites are equipped with controllers to control their various functions. One example of such a controller is PL.

PLC is a fairly common control device for automatic control of general electric machine facilities, but it requires some control technology and its application ability to be applied to the P controller. As a result, many people in schools, training centers, etc. are learning to learn the functions and applications of PL.

In accordance with these educational needs and the need of industrial sites, training equipment and industrial controllers have been developed that can professionally understand the function of PL and develop its application ability and are supplied to schools, vocational training centers, living sites as well as industrial sites. It is becoming.

PLC applied to the actual industrial field allows continuous control of the P controller based on the sensing value from a sensor installed at a given condition or an arbitrary position. The control is based on a series of program instructions by the user.

Therefore, the ability to utilize PLC can be regarded as the precise design of PLC command and the prompt input of the design program command to precisely control the controlled devices according to the given conditions.

1 is a block diagram illustrating the hardware of a general PLC system. As referred to herein, the PLC system is controlled by the loader 20 or handloader 30 for inputting a series of control commands to the PLC and the PLC. The controller 50 is configured to perform an operation. The printer 40 may be connected to the loader 20 for inputting a control command to the PLC.

The keyboard 21 is coupled to the loader 20.

The PLC 10 includes a CPU 11, an O / S memory 13 for storing a system operating program in the CPU, a data memory 12 for storing control program data input by a user, and a digital of the CPU. And an output unit 14 for generating an output contact according to a logic value.

In such a PLC system, the execution control command for the CPU 11 in the PLC is input by the keyboard 21 or the hand loader 40 connected to the loader 20.

For example, when designing a routine for controlling a specific device using the LSIS Master-K series, a command for delaying the output start time for an input signal rise, that is, the command of the on delay timer is " TON T ". If the parameter value is set to 10 (seconds), the execution command is" TON T10 ".

Also, the off delay timer command is " TOFF T ", so if the parameter value is 3, the execution command is" TON T3 ".

Also, the command to convert decimal to binary is " BIN_ ", the execution command to convert the decimal number" 8 "to the binary number" 1000 "is" BIN_8 ".

The PLC control commands are inputted by using the loader's keyboard and keying each execution command or selecting a menu among supported graphic modes through the loader's screen. Since each operation condition has a predetermined instruction and its parameter value, a program for controlling a sequence of a relatively uncomplicated device is also quite long, and the input time of the control data of PLC is considerably long.

In general, the more complicated the structure of the control device is, the more complicated and complex the types of instructions are used, and the length of the instruction program is increased. In addition, the possibility of error in control data entry is increased.

An object of the present invention is to allow the P-C operation program applied to general industrial controllers or household devices to be quickly and accurately input using a shortcut key, so that the PL C command can minimize the input error of the control program and its input time. It is to provide a keyboard device for a shortcut input.

Another object of the present invention is to support both the normal mode and the hot key mode in the PLC control program input to the keyboard coupled to the loader, and switching between the normal mode and the hot key mode is made of only a simple operation of a specific key button The present invention provides a keyboard device for inputting a short control command.

1 is a schematic block diagram of a PLC operating system.

2A, 2B and 2C are shortened instruction code tables applied to the present invention.

Figure 3 is a block diagram of a shortcut keyboard device according to the present invention.

※ Explanation of code about main part of drawing ※

10: PLC 11: CPU

12: Data memory 13: O / S memory

14: output unit 20: loader

21: keyboard 22: mode switch

23: key matrix input unit 24: keyboard controller

25: Keyboard O / S memory 26: Shortcut command DB memory

27: output interface 30: hand loader

40: printer 50: controlled controller

In order to achieve the above object, the keyboard device of the present invention separates a common command part repeatedly used from the execution command of PLC and its parameter value setting part, shortens the common command part, and registers it in the keyboard internal memory. In the keyboard, a key button for selecting a short code input and a normal input mode is selected for the input of the PLC control program, thereby configuring the short mode and the normal mode of the PLC control program to be switched. It features.

Hereinafter, the present invention will be described.

The basic concept of the present invention divides execution commands given for one particular operation into a command part and a parameter part in the control of a PLC, so that each command may have a different setting value (parameter) but common commands that command the same operation. For the part, it is possible to dramatically shorten the input time of the PLC program by providing a shortcut function.

For this purpose, the database is constructed by shortening the frequently used commands and mapping them in 1: 1 in each key button on the loader's keyboard and registering them in the memory of the keyboard.

Therefore, if a user using the loader-specific keyboard for programming PLC presses a shortcut key selection button provided on the keyboard to select a shortcut key input mode and then press a specific key button of the loader, the command corresponding to the pressed shortcut key button is pressed. Is output from the memory and displayed on the input screen of the loader.

For example, a key button on the keyboard in the hotkey input mode. When is pressed, the setpoint command of the on delay timer TON T "is created and displayed, and key button" When is pressed, the Off Delay Set Point command is " TOFF T "is created and displayed, and the key button" If is pressed, set value command of integrating timer TMR T " is generated and displayed so that unique shortcut commands can be assigned to every key button of the keyboard.

In addition, when an arbitrary shortcut command is input, the command value of the corresponding shortcut key is displayed, and a blank for inputting the parameter value of the command is automatically generated according to the command, thereby executing the command for controlling the PLC. It is possible to improve the convenience, accuracy and speed of inputting.

2A, 2B, and 2C show a shortcut key setting applied to the master-K series PLC of LSIS and its display embodiment. This is not just limited to the LSIS Master-K PLC series, but can be applied to any other company-branded PLC. In addition, the shortcut key value and the corresponding command are not necessarily specified only under the condition of FIG. 2.

On the other hand, in order to input the PLC control program using the shortcut key, a shortcut key database for accepting the shortcut key and a normal mode / shortcut mode selection key must be provided on the keyboard. As the selection key, it is possible to use the "scroll lock" key button which is the least utilized on the ordinary keyboard, and if necessary, a separate key button can be added on the keyboard in addition to the existing key button.

Accordingly, when the keyboard is selected as the normal mode by the user, the PLC control program is input by inputting one command and its parameters according to the conventional method, and when the keyboard is selected as the shortcut mode, a shortcut command is input. PLC control program can be entered.

The structure of the keyboard device of this invention is shown in FIG.

As referred to herein, the keyboard of the present invention performs a key scan operation and a code conversion to determine a key matrix input unit 23 that receives a key input of a keyboard user and which key input information is provided from the key matrix input unit. Keyboard controller 24, O / S memory 25 that provides the basic operating BIOS of the keyboard controller, shortcut command DB memory 27 that stores commands corresponding to shortcut code values, and shortcut keys generated by the keyboard controller. And an output interface 27 for transmitting the value corresponding instruction to the loader main body side.

The keyboard controller 24 includes a clock generator for the kisscan, a timer for determining a shortcut mode / normal mode, and also adding a command corresponding to a shortcut key to generate a blank for parameter input.

Therefore, the controller in the keyboard determines whether the shortcut mode or the normal mode is a key value input through the key matrix input unit, and if the PLC control program input condition in the normal mode is used, the controller inputs the key value without utilizing the shortcut command DB memory. Process as it is and send to the main body side of the loader, and in the short mode, the command corresponding to the input shortcut key value is retrieved from the short command DB and the blank is attached to the command to be sent to the loader main body side.

In the above shortcut mode, when a shortcut command according to a keyboard shortcut value is generated on the keyboard and displayed on the monitor screen of the loader, and a blank for parameter insertion is automatically attached to the command, the keyboard controller is automatically connected to the loader monitor. By automatically controlling the cursor on the screen to be located in the blank, and inserting the parameter value set in the command in that state, one execution command is input.

As described above, the PLC control command shortcut input mode may use the scroll lock button on the keyboard as it is, and in this case, a separate mold manufacturing burden for the PLC program shortcut command dedicated keyboard may be avoided.

In addition, any one of infrequently used buttons other than the scroll lock button may be selectively used.

As described above, the present invention can quickly and accurately input a PLC control operating program applied to a general industrial control device or a living device, thereby bringing a unique effect of minimizing an input error of the control program and its input time.

Claims (3)

Key matrix input unit 23 that accepts key input from the keyboard user, and performs key scan operation and code conversion to determine what key input information is provided from the key matrix input unit, and determines the shortcut mode / normal mode and the shortcut key. A keyboard controller 24 for calling and outputting a command corresponding to the command, an O / S memory 25 for providing a basic operating BIOS of the keyboard controller, and a shortcut command DB for storing a command corresponding to a shortcut key value And a memory (27) and an output interface (27) for transmitting a shortcut value corresponding command generated by said keyboard controller to a loader main body side. The method of claim 1, And a normal mode / shortcut mode selection key of the keyboard is a scroll lock key button on the keyboard. The method of claim 1, The keyboard controller has a function of automatically generating a blank for inputting a parameter of the command when the command corresponding to the shortcut key is called and processed, and has a function of automatically inputting a PLC control command. .