JPH01166204A - Documentation display device for programmable controller - Google Patents

Abstract

PURPOSE:To easily grasp and identify the control contents by using a statement information adding means and adding the statement information to the head device or head step number in accordance with a fact whether the data information shows the various programs or circuit blocks. CONSTITUTION:A documentation display device is obtained by adding a statement information adding part 5 to a conventional constitution. The part 5 retrieves the data area of an internal memory 2 with reception of an output command from a keyboard 3 and reads out the statement information stored in a statement information area to synthesize this information with a program related to an output command. In this case, the statement information is added to the head of the program if this program means a circuit pattern. While in case of a list pattern, the statement displays registered at the head of each program are synthesized and displayed. As a result, the control contents are easily grasped.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a documentation display device for a programmable controller that is capable of adding statement information to the data contents of a programmable controller, organizing the data, and displaying the data as desired. It is something.

(Prior Art) Conventional documentation display devices for this type of programmable controller are shown in FIGS. 9 to 14. As shown in FIG. 9, this conventional programmable controller documentation display device includes an arithmetic processing unit (1) that performs arithmetic operations to control external and internal equipment of the programmable controller, and a An internal memory (2) that stores information regarding data, a keyboard (3) as an input means for inputting calculation commands to the calculation processing unit (1) and commands to confirm data in the internal memory (2); )
When a data confirmation command is input from the internal memory (2) based on the calculation operation of the calculation processing unit (1).
The configuration includes an output unit (4) that outputs information stored in the output unit (4).

Next, the operation of the conventional device will be explained based on this configuration. First, to explain the outline of the operation using the operation flowchart shown in FIG. A decision is made (step 2). If it is determined that it is a circuit pattern, display data for one screen from the beginning of the program indicating the circuit pattern is constructed and output to the output section (4) (step 3). If it is determined to be a list pattern in step 2, the arithmetic processing unit (1) outputs the output unit (
The list pattern corresponding to 4) will be output (
Step 4). The content outputted to the output section (4) in this way is the circuit pattern itself or the list pattern itself.

To further explain the details of the operation, the display of the program contents of the programmable controller among the information stored in the internal memory (2) is shown in FIGS. 11 to 13. FIG. 11 shows the configuration of the program of the programmable controller. In the figure, the program consists of an always-running program that is always executed, an interrupt program that is executed when a condition is met, and a subroutine program that is executed based on the instructions of the always-executing program. PO and Pi are devices indicating the beginning of each program. Figure 12 shows a ladder circuit diagram using ladder symbols, which is formed by each circuit block (from the operation start instruction to the output instruction), and in the figure, 0.5, 50
, 80.200, 300 are the first step numbers of each circuit block when displaying a ladder circuit, and are the first devices To, Il.
, PO,, P1. FIG. 13 shows the overall configuration of the command list, with step numbers 0...7
．． 50...54. ...300...304 The registered instruction list contents are described, and at the beginning of each program are the devices IO, If, and PO indicating the beginning.
, Pi are added.

From the human keyboard (3) to the internal memory (2)
), when a data confirmation command is input to confirm the program of information stored in the internal memory (2), the arithmetic processing unit (1) that receives this data confirmation command reads out the corresponding program from the internal memory (2). , the ladder circuit diagram (shown in FIG. 12) of the corresponding program or the instruction list diagram (shown in FIG. 13) consisting of sequence instructions is output as is by the CRT (42) of the output section (4).

Furthermore, among the information stored in the internal memory (2), the case where the contents of a circuit block (one circuit block from an operation start instruction to an output instruction) forming a program of the programmable controller is displayed is shown in FIGS. 1
It is shown in Figure 5. FIG. 14 shows a ladder circuit diagram of the program. This ladder circuit is formed from a plurality of circuit blocks, and the first step numbers 0, 3, 5, etc. are placed at the beginning of each circuit block used to display the ladder circuit. ...40.42 is assigned. FIG. 15 shows a configuration diagram of the command list of the program, in which step numbers 0...42 corresponding to the command list of each registered command are assigned. Displaying the circuit blocks forming this program is performed in the same way as displaying the program.

(Problems to be Solved by the Invention) Conventional documentation display devices for programmable controllers are configured as described above, so when displaying various programs or circuit blocks forming a program as documentation, a ladder circuit diagram of the program is displayed. Or it will be displayed as an instruction list diagram,
There are problems in that users (designers and other third parties) cannot easily understand the control contents of a program or circuit block, and cannot distinguish it from other programs or circuit blocks of the same type.

This invention was made in order to solve the above-mentioned problems, and it is a programmable controller that allows designers and other third parties to easily understand and distinguish the control contents of various programs and circuit blocks forming these programs. The purpose is to obtain a documentation display device.

[Means for solving problems]

The documentation display device for a programmable controller according to the present invention controls the external equipment and internal equipment of the programmable controller by means of arithmetic processing means to perform arithmetic operations, and stores information regarding data necessary for the arithmetic processing means in internal storage means. , when a content display statement corresponding to the information stored in the internal storage means is inputted by manual means, and a data confirmation command for confirming the stored information is inputted by the input means, the corresponding Information and corresponding statement information are combined and added by a statement information adding means, and the combined and added contents are outputted by an output means.

[Effect]

The statement information adding means in this invention synthesizes and adds statement information for displaying the corresponding contents to information about data necessary for arithmetic processing of a programmable controller, and outputs the output result by combining the information about the data and the statement information. You can easily check and decipher the information. If the information related to this data is a variety of programs (always running program, interrupt program, subroutine program, etc.), statement information is added to the device that indicates the beginning, and if the information related to the data is a circuit block forming the program, statement information is added to the device that indicates the beginning. adds statement information to the first step number.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 5. FIG. 1 is a schematic block diagram of the configuration according to the present embodiment, FIG. 2 is a diagram of the storage configuration of the internal memory controlled by the arithmetic processing section and the statement information addition section, and FIG. 3 is the embodiment shown in FIG. 1. 4 is a program ladder circuit diagram, and FIG. 5 is an instruction list format diagram. In each figure, the documentation display device for the programmable controller according to this embodiment is
A statement information adding section (
5), and other identical components will be described with the same reference numerals. Statement information addition part
In (5), when an output command for confirming program contents is input from the keyboard (3), the sequence program data area (22) of the internal memory (2) is searched by the output command and appended to the beginning of the program. The configuration is such that the corresponding statement information stored in the statement information area (24) is read based on the flag indicating the presence or absence of a statement, and the read statement information is synthesized and added to the program related to the output command.

Next, the operation of the apparatus of this embodiment based on the above configuration will be explained based on FIGS. 2 to 5.

First, the various programs shown in Fig. 4 or 5 (each program consisting of a ladder circuit diagram in Fig. 4 and the instruction list in Fig. 5) are stored in the sequence program data area (22) of the internal memory (2). If the statement information for each program is stored, input the statement information corresponding to the specific program manually from the keyboard (3), and input the manually entered statement information to the arithmetic processing section (1). is stored in the statement information area (24) of the internal memory (2) based on the control of the statement information area (24).

Next, in the statement synthesis output operation for checking program contents, when the operator inputs an output command from the keyboard (3) (step 1), the statement information addition section (5) determines whether it is a fixed pattern or a list pattern ( Step 2). If it is determined that it is a circuit pattern, it is determined whether the program related to the output command includes statement information (step 3). If statement information is attached based on this judgment, the statement information added to each program is added to the beginning of the program, and the step number 0 or the device added to the beginning of the circuit block is set to step number 0, and this step number 0 Alternatively, since statement information is registered in the device attached to step number O, only step number 0 is searched for in the statement information addition unit (5) (step 4). Based on this search result, the statement addition section (
5) reads the statement information from the statement information area (24), and also reads the program related to the output command from the sequence program area (22) (if outputting as a circuit pattern, reads the ladder circuit diagram of the circuit pattern in the storage area (23)) ), and the read contents are combined and output as display screen data (or printout data) in the internal memory (2) (step 5). This internal memory (2) stores synthesized display screen data or printout data respectively in storage areas (25),
(26), and outputs the display screen data or printout data stored in the storage areas (25) and (2B) to the output unit (4) based on the control of the arithmetic processing unit (1), and outputs the display screen data or printout data to the output unit (4). For data, the video controller (
41), the screen will be displayed on the CRT (42).

In addition, if it is determined in step 3 that statement information is not included, the arithmetic processing unit (1) generates one screen worth of display data (or printout data) from the beginning of the program, as in the case of conventional devices. and configure the output section (
4) (step 6).

Furthermore, even if it is determined in step 2 that the pattern is a list pattern, processing operations similar to those for outputting circuit patterns (steps 3 to 6) can be performed.

The program displayed on the CRT (42) of the output section (4) becomes the ladder circuit shown in Fig. 4 or the command list shown in Fig. 5, in which the statement information is
TATEMENT FORIOI・[STATEMEN
They are synthesized and displayed as a statement display registered in a device that indicates the beginning of each program (interrupt program, subroutine program, etc.), such as T FORpH. In the same figure, In, 11°PO, PI
is the device that indicates the beginning of the program. Therefore, statement information can be displayed one line before the device indicating the beginning of an interrupt program, subroutine program, etc.

Furthermore, if interrupt programs and subroutine programs are not used in the program, these devices can be used as dummy devices in the program, and by registering statements, the program can be divided into control laws, and the program can be divided into control laws with statement information. This means that it can be displayed.

In the embodiment, statement information is added and displayed for each type of program, but it is also possible to add statement information to each circuit block forming each type of program. This other embodiment will be explained based on FIGS. 6 to 8 with reference to descriptions of parts common to the previous embodiment. The difference from the previous embodiment is that the statement information area (24) in the internal memory (2)
The statement information stored in the sequence program data area (22) is registered for each circuit block forming the various programs stored in the sequence program data area (22).

This statement information is registered in the first step number of each circuit block. That is, as shown in FIG. 8, which shows the relationship between program step numbers and statement information, when outputting a program, the statement information adding section (5) first determines the presence or absence of statement information for the first step number using signal S1. The flag stored in the program block first step storage area (27) is searched (step 4). If the flag is ON (statement present) as a result of this search, signal S2
As shown, the statement information of the corresponding step number is read from the statement information area (24), and the signal S3 is read from the sequence program data area (22).
Output the corresponding program as shown below.

The output circuit blocks of the program and the statement information are synthesized by the statement information adding section (5) (step 5). In this way, when combining program data and statement information, there is no need to search the entire data, and the presence or absence of statement +'Rfa can be checked from the beginning in each circuit block and output, reducing the search time. The synthesized data contents can be displayed on screen or printed out.

Furthermore, in each of the above embodiments, the statement information is registered for each program or circuit block and is added in combination, but the configuration is such that statement information is registered in each program and each circuit block and added in combination. It is also possible to do this.

Further, the statement information registration capacity in each embodiment is determined by the program console, and is within the statement registration capacity of the program console per step.

Furthermore, the display of a program or circuit block to be displayed based on an output command can be configured to select display with statement information or without statement information. Even when displaying without this statement information, the step number where statement information is registered has a different display method than other step numbers, so if statement information is displayed in one of the step numbers during depacking processing, etc. You can see at a glance whether it is registered.

In addition, the program contents based on the output command are output to the CRT.
In addition to outputting on a display screen, other output methods such as printing can also be used.

(Effects of the Invention) As described above, according to the present invention, statement information is synthesized and added to the information stored in the internal storage means, and the information to which this statement information is added is outputted. The content of information control shall be controlled by designers and other third parties (
This has the effect that users (users) etc. can easily understand and distinguish between them.

[Brief explanation of the drawing]

FIG. 1 is a schematic block diagram of an embodiment of the present invention, FIG. 2 is a storage configuration diagram of an internal memory in an embodiment of the invention, and FIG. 3 is an operation flowchart of an embodiment of the invention. 4 and 5 are ladder circuit diagrams and instruction list configuration diagrams of a program used in the embodiment shown in FIG. 1, and FIGS. 6 and 7 are program diagrams used in another embodiment of the present invention. Ladder circuit diagram and instruction list diagram,
FIG. 8 is a diagram of the relationship between program step numbers and statement information, FIG. 9 is a schematic block diagram of the conventional device, and FIG. 10 is an operation flowchart of the conventional device.
Figure 1 is a diagram of the relationship between various programs, Figure 12 and Figure 1.
3 shows a ladder circuit diagram and an instruction list form of a program used in a conventional device, and FIGS. 14 and 15 show a ladder circuit diagram and an instruction list form for each circuit block of a program used in a conventional device. . (1)...Arithmetic processing unit, (2)...Internal memory, (3)...Keyboard, (4)...Output unit,
(5)...Statement information addition section, (6)...
External memory, (7)...Interface section, (8)...FDD section, (9)...Bus. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (5)

[Claims] (1) arithmetic processing means that performs arithmetic operations to control external and internal equipment of the programmable controller; internal storage means that stores information regarding data necessary for the arithmetic processing means; and arithmetic instructions to the arithmetic processing means; an input means for inputting a command to confirm data in the internal storage means and a statement corresponding to the data in the internal storage means; Documentation display for a programmable controller, characterized in that it is configured to include statement information adding means for combining and adding corresponding statement information, and output means for outputting the content synthesized by the statement information adding means. Device. (2) The statement information adding means is configured to add statement information representing the contents of the program for each program block unit of data stored in the internal storage means to a device indicating the beginning of the corresponding program. A documentation display device for a programmable controller according to claim 1. (3) The statement information addition means is configured to add statement information representing the contents of the circuit block to the first step of the corresponding circuit block for each circuit block unit of data stored in the internal storage means. A documentation display device for a programmable controller according to claim 1. (4) The statement information adding means adds statement information representing the contents of the data stored in the internal storage means for each program unit and each circuit block to the first device of the program and the first step of the circuit block. A documentation display device for a programmable controller according to claim 1, characterized in that it is configured to:. (5) Claims 2 to 5 are characterized in that the output means is capable of selecting whether the statement information is output after being combined and added by the statement information adding means or whether it is output without being combined and added. 5. A documentation display device for a programmable controller according to any one of Item 4.