JP2911667B2 - Programming device for programmable controller - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a programming device for a programmable controller, which changes whether or not a system program can be displayed on a programming device and displays a displayable program.

[0002]

2. Description of the Related Art Programs in a programmable controller include a system program which is a program created by a manufacturer providing the programmable controller and a user program which is a program created by an end user. Conventionally, the system program and the user program are similarly displayed on the programming device without distinction.

[0003]

However, when the end user changes the system program in the programmable controller using the programming device, there is a risk that the function unique to the programmable controller is lost. When used, it is necessary to prevent system programs from being displayed. On the other hand, a manufacturer that provides a programmable controller needs to display a system program in order to maintain the programmable controller.

[0004] Therefore, in order for a maker to correspond to each user according to the technical level of the user whether or not to display a system program, a dedicated programming device must be created for each user. There were unresolved issues. In view of the above, the present invention has been made in view of the above-mentioned conventional unsolved problem, and is a programmable program that can realize display of a system program list that can be changed according to the level of a user without requiring a dedicated programming device. It is intended to provide a programming device for a controller.

[0005]

In order to achieve the above object, a programming device for a programmable controller according to a first aspect of the present invention is a programming device for creating and maintaining a program for a programmable controller as shown in FIG. Function setting means for setting data on whether the program can be displayed on the display means while displaying the data, storage means for storing data set by the function setting means, program display instructing means for instructing display of the program, When the display of the program is instructed by the program display instructing means, the display availability data stored in the storage means is referred to to determine whether or not the system program can be displayed, and only when the display is possible, the display means is programmable. List of programs including system programs in the controller It is characterized by comprising a Shimesuru display control means.

According to a second aspect of the present invention, in the programming device for a programmable controller, when the display control means determines that the display of the system program is permitted, the display control means determines whether the program is a system program or a user program. It is characterized by having information management means for displaying on the display means.

[0007]

According to a first aspect of the present invention, there is provided a programming device for a programmable controller, which sets display / non-display data of a system program while displaying the data on a display unit, and stores the display / non-display data of the system program in a storage unit.
When the display of the system program is instructed, the display permission / inhibition of the system program is determined by referring to the display permission / inhibition data stored in the storage means. Therefore, a program list corresponding to the level of the user is displayed according to the setting contents. I do.

According to a second aspect of the present invention, a programming device for a programmable controller determines whether a system program or a user program can be displayed by a specific data display instructing unit by an information managing unit, and distinguishes each of them. indicate.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 2 is a schematic configuration diagram showing one embodiment of the present invention. 2, reference numeral 1 denotes a loader as a programming device. The loader 1 includes a processing unit 2, a display unit 3, an input unit 4, an auxiliary storage unit 5, an information management unit 6, and a controller interface unit 7. Have been.
The processing unit 2 receives an input signal from the input device unit 4 and displays data on the display device unit 3, transmits and receives information to and from the auxiliary storage unit 5, and receives a signal from the information management unit 6. It receives the result of determination as to whether the program is a program or a user program, and exchanges information with the programmable controller 8 via the controller interface unit 7. The display unit 3 displays an editing screen for editing data for which system display is prohibited on at least the loader 1, and displays a list of programs for which system display is permitted by distinguishing between system programs and user programs. The input device unit 4 includes a keyboard, a mouse, and the like that can move a cursor. The input device unit 4 inputs a command for defining a function, edits an edit screen displayed on the display device unit 3, and prohibits display of a system program on a file. Create and change data.
The auxiliary storage unit 5 files the system program display prohibition data input from the input device unit 4. The information management unit 6 determines whether the program to be displayed is a system program or a user program, and displays the program on the display unit 3 in distinction.

Next, the operation of the above embodiment will be described with reference to the flowchart of FIG. First, FIG. 3A is a flowchart of the editing program. That is, when the operator inputs a command for defining a function to the loader through the input device unit 4 in step S1, an editing screen is displayed on the display device unit 3 in step S2. As shown in FIG. 4, an example of the edit screen includes a prohibited item column 10, an "execute" item column 11, and a "cancel" item column 12, where "execute" and "cancel" indicate the movement of the cursor by the mouse. Selected by click. Set whether to prohibit system display by selecting and clicking "execute" or "cancel" with the mouse. Next, in step S3, it is determined whether or not the "execute" column is selected. If "execute" is selected, the process proceeds to step S4, and a flag for prohibiting display of the system program is set on the auxiliary storage. On the other hand, if "execute" is not selected in step S3, it is determined whether or not "cancel" is selected in step S5. If "cancel" is selected, the process proceeds to step S6 and the system program is stored in the auxiliary storage. The display prohibition flag is reset, and when cancel is not selected, the process returns to step S3.

FIG. 3B is a flowchart of the list display program. That is, when the operator inputs a program list display command in the programmable controller to the loader 1 through the input device unit 4 in step S11, the processing unit 2 reads out the system program display inhibition data on the file in step S12,
refer. Next, in step S13, it is determined whether or not there is a displayable system program. If there is a displayable system program, the process proceeds to step S14.
The information management unit 6, which stores a system program or a user program according to the program number, determines whether the program to be displayed is a system program or a user program. As shown in FIG. Is displayed on the display unit 3 with "s", and "u" in the case of a user program, and the processing ends. If there is no system program that can be displayed, only a list of user programs is displayed on the display unit 3 and the process is terminated.

Here, the display unit 3, steps S2, S
14 and S15 correspond to the display means,
Steps S1, S3 and S5 correspond to function setting means, auxiliary storage unit 5, steps S4 and S6 correspond to storage means, input device unit 4 and step S11 correspond to program display instruction means, and display device unit 3 , Step S
12, S13 and S15 correspond to the display control means, and the display unit 3 and step S14 correspond to the information management means.

When the manufacturer ships the loader 1, for example, the input device unit 4 is operated to input a function definition command to the processing unit 2 in order to prevent a function specific to the programmable controller from being lost. I do. At this time, the processing unit 2 performs the processing shown in FIG.
Is executed, and the editing screen shown in FIG. 4 is displayed on the display unit 3 (step S2). In this state, the input device 4
The mouse is operated to move the cursor to the "execute" item column 11, and by clicking the operation button in this state, the system display prohibition flag is set on the auxiliary storage (steps S3 and S4).

As described above, when the system display prohibition flag is set in the auxiliary storage, the loader 1 is delivered to the user in this state, connected to the programmable controller 8 and started, and then the input unit 4 When a program list display command in the programmable controller 8 is input to the processing unit 2 from the CPU, the processing shown in FIG. 3B is executed, first, the system display inhibition flag is read by referring to the file on the auxiliary storage (step S12), and then the system When it is determined whether or not the display prohibition flag has been set, since the system display prohibition flag has been set, only the user program list is selected and displayed on the display unit 3.

For this reason, the operator of the loader 1 can change or modify the program only for the user program, but can change or modify the program because the system program is not displayed. Therefore, it is possible to reliably prevent the function unique to the programmable controller from being impaired. On the other hand, when the loader 1 is delivered to the end user, the end user can change or modify the system program without impairing the functions unique to the programmable controller, or when the manufacturer's service person performs inspection and maintenance, etc. First, the function definition command is input to the processing unit 2 by the input device unit 4, and the processing unit 2 executes the processing of FIG. 3A, whereby the editing screen is displayed on the display device unit 3. By operating the mouse of the input device unit 4 and moving the cursor to the "cancel" item column 12 and clicking the operation button, the system display inhibition flag on the auxiliary storage is reset (steps S5 and S5).
6).

Thereafter, by inputting a program list display command from the input device unit 4 to the processing unit 2, the processing unit 2 executes the processing of FIG. 3B. At this time, since the system display inhibition flag in the auxiliary storage has been reset, the process proceeds from step S13 to step S14.
As shown in FIG. 5, the system program and the user program are identified by the identifications “s” and “u” and displayed on the display device unit 3. Change of program
Make corrections and tests. As described above, since the system program and the user program are identified and displayed, it is not necessary to discriminate both from the displayed program name or program number, and the two can be clearly distinguished. Program can be quickly selected.

To prohibit the display of the system program again after the above operation is completed, the process of FIG. 3A may be executed to set the system display prohibition flag on the auxiliary storage. As described above, according to the above-described embodiment, by inputting the function definition command, the editing screen is displayed, and whether to prohibit the display of the system program is selected on this editing screen, By setting or resetting the system display prohibition flag, it is determined whether to prohibit the display of the system program. Therefore, the display range of the program can be easily set according to the technical level of the user. As a result, when there is a possibility that an unspecified operator on the end user side may use the loader 1 and there is a possibility that the function peculiar to the programmable controller may be impaired, the system can be operated simply by setting the system display inhibition flag. Prohibits the display of the program list and reliably prevents damage to the functions specific to the programmable controller Rukoto can.

In the above-described embodiment, whether or not to display the system program is selectively set in the system display designation of FIG. 4. However, the present invention is not limited to this. May have a hierarchical structure so that the display of the system program can be selected stepwise according to the level of the user. Also,
In the above embodiment, when the manufacturer performs the maintenance, by selecting "cancel" in step S5, both the system program and the user program can be displayed as shown in FIG. 5 in step S14.

Further, in the above-described embodiment, the selection of the editing screen is performed using the mouse. However, the present invention is not limited to this, and the selection of the editing screen may be performed using the function keys of the keyboard.

[0020]

The present invention is configured as described above, and has the following effects. According to the programmable controller programming device of the first aspect, the display availability data of the system program is stored in the storage means, and when the display of the system program is instructed, the display availability data is stored in the storage means. In this case, the display of the system program is determined by the user. When the end user uses the programming device, the display of the system program list can be arbitrarily controlled according to the level of the end user. Loss can be reliably prevented.

According to the programming device for a programmable controller of the present invention, the information management means determines whether the system program or the user program can be displayed by the specific data display instructing means. Are displayed separately so that the user can easily determine whether the program is a system program or a user program.

[Brief description of the drawings]

FIG. 1 is a functional block diagram showing a basic configuration of the present invention.

FIG. 2 is a schematic configuration diagram of an embodiment.

FIG. 3 is a flowchart of the embodiment.

FIG. 4 is a diagram of an editing screen according to the embodiment.

FIG. 5 is an example of a program list according to the embodiment.

[Explanation of symbols]

 Reference Signs List 1 programming device (loader) 2 processing unit 3 display unit 4 input device unit 5 auxiliary storage unit 6 information management unit 7 controller interface unit 8 programmable controller

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G05B 19/04-19/05

Claims (2)

(57) [Claims] In a programming device for creating and maintaining a program of a programmable controller, a function setting means for setting data indicating whether or not a system program can be displayed on a display means, and storing the data set by the function setting means. Storage means for performing the display of the program, a program display instruction means for instructing the display of the program, and referring to the display availability data stored in the storage means when the display of the program is instructed by the program display instruction means. A programming device for a programmable controller, comprising: display control means for determining whether or not display is possible and displaying a program list including a system program in the programmable controller on the display means only when display is possible. 2. The information processing apparatus according to claim 1, wherein said display control means has an information management means for determining whether the program is a system program or a user program when deciding whether or not the system program can be displayed, and displaying the program on the display means while distinguishing each program. The programming device for a programmable controller according to claim 1.