KR100368061B1 - An instruction inputting method of programmable logic controller using shortened instruction code - Google Patents

Abstract

An object of the present invention is to provide a PLC control command short input method that can quickly and accurately input the operating program of the PLC (programmable logic controller) applied to general industrial control devices or household appliances.

Up to now, when inputting a series of control commands to control a specific device using PLC, all the control commands and their parameter values have to be repeatedly entered one by one using the loader (keyboard). .

The present invention separates the common command part repeatedly used from the execution command of the PLC and its parameter value setting part to shorten the common command part and then registers it in the memory in advance, and thereafter, the PLC control program In case of inputting short code, input blank for inputting parameter value together with common command output corresponding to short code, and design for PLC control on blank displayed according to the command. By inserting a parameter value, which is a condition, one execution command is completed and inputted, so that a series of control program commands for PLC can be accurately and quickly entered.

Description

{An instruction inputting method of programmable logic controller using shortened instruction code}

The present invention relates to an operating program input method of a programmable logic controller (PLC) applied to a general industrial control device or a living device. When the control command can be input by using a shortcut key, it is possible to drastically shorten the programming input time and to reduce the possibility of a command input error.

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 coupled to the loader 20 for inputting a control command to the PLC.

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. The output unit 14 generates 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 loader 20 or the hand loader 40.

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 the rising of the input signal, 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 reduce the input error of the control program and the input time of the PLC control commands to reduce the input time of the control program by enabling the rapid and accurate input of the operating program of the PL applied to the general industrial control devices or household equipment To provide.

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

2a, 2b and 2c is a table of abbreviated command codes applied to the present invention.

3 is a flow chart illustrating an implementation process of the present invention.

※ Explanation of code about main part of drawing ※

10: PLC 11: CPU 12: Data memory

13 O / S Memory 14 Output 20 Load

30: hand loader 40: printer 50: the controlled

In order to achieve the above object, the present invention separates the 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 memory beforehand. Then, when inputting the PLC control program, if a short code is input, a blank for inputting a corresponding command parameter value is output along with a common command output corresponding to the short code, and a blank displayed according to the command is displayed. By inserting a parameter value, which is a design condition for PLC control, it is characterized in that a single execution command is completed.

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, shortcodes are made from the commands with high frequency of use, and they are registered in the loader's memory in a one-to-one correspondence with each key button on the loader's keyboard. Therefore, after selecting a shortcut key input mode and pressing a specific key button of the loader, a command corresponding to the pressed shortcut key button is output from the memory and output on the loader's input screen. In this case, the memory for storing the shortcut key command corresponding to each key button of the keypad may use a memory in the PC. In other words, the data storage memory for the shortcut key corresponding to each key button can be mounted in any of the loader and the PLC.

For example, a key button on the keypad of the loader for entering PLC control data in hotkey mode. When is pressed, the setpoint command of the on delay timer Kit value of TON T "is generated and displayed, and key button" When is pressed, the Off Delay Set Point command is " A kit value of TOFF T "is generated and displayed, and the key button" If is pressed, set value command of integrating timer TMR T " can be generated and displayed so that a shortcut command can be given to each key button of all the keyboards.

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.

In order to input the PLC control program using these shortcut keys, the loader must provide the shortcut key database and the normal mode / shortcut mode selection key to accept the shortcut keys in advance.

Therefore, when the loader is selected as the normal mode by the user, the PLC control program is inputted by inputting one command and its parameters according to the traditional method, and when the loader is selected as the shortcut mode, the shortcut command is used. PLC control program can be input.

When the loader is selected as the shortcut key mode, the first key input data inputted from the keyboard is displayed in the shortcut key database and the command corresponding to the shortcut key is automatically displayed. The command is followed by a blank for parameter value input. Enter the parameter value of the instruction in this blank and hit enter to execute the execution instruction for one operation.

3 is a flow chart illustrating an implementation process of the present invention.

As referred to here, in the first step, the common command part repeatedly used among the execution commands of PLC and its parameter value setting part are shortcoded to the common command part, and then registered in the memory to make a database. do. A shortcode database for such short instructions may be built into the memory in the loader, or alternatively, may be built into the memory in the PL.

In the second step, when the program short code for the PLC control is input while the database construction for the short command is completed, the first step is to determine whether the current program data input mode is the short command input mode.

In the third step, if the result of the execution of the second step is a shortcut command input mode, a command corresponding to the input short code is read from the database of the short command memory and output, and a blank for inputting the corresponding command parameter value is attached to the command. do. At this time, if the shortcut command database is a memory in the PLC, if there is a shortcut command from the loader, the PLC receives the read command, finds the corresponding command, and sends the command for the shortcode to the loader again for display.

In the fourth step, the execution command is completed by inserting a parameter value of the corresponding command for controlling the PLC into the blank displayed according to the command of the third step.

The above four steps are repeatedly performed for each execution command to input the entire PLC control program.

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)

Separating the common command part repeatedly used from the execution command of the PLC and its parameter value setting part, shortening the common command part, and registering the same command part in a memory to make a database; Determining whether to select a shortcut command input mode when inputting a program for controlling PLC; Extracting a command corresponding to the short code from the database and outputting a blank for inputting a parameter value of the command when the short code is input in the short command input mode; And inserting a parameter value of a corresponding command for controlling the PLC into a blank displayed according to the command and completing the input of the execution command. The method of claim 1, And a memory in which the shortcut command code is input and stored is mounted in the PD. The method of claim 1, And a memory in which the shortcut command code is input and stored is mounted in a loader.