JPH03278103A - Programming device of programmable controller - Google Patents

Abstract

PURPOSE:To execute the program check of many kinds of machines by one set of programming device by storing format data of each kind of machine in a storage means, instructing the format data and using it for a format check. CONSTITUTION:A storage means 100 determines and stores data for a format check at every kind of machine of a programmable controller fro executing the sequence program concerned. Also, an instructing means 200 instructs the kind of machine of the programmable controller connected to a programming device. Moreover, an error detecting means 300 detects an error of the sequence program generated by using the data for a format check corresponding to the kind of machine instructed from the instruction means 200. In such a way, by executing the format check of the sequence program for plural kinds of machines by one set of programming device, the programming device can be generalized.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a programming device for a programmable controller that creates and inputs a sequence program to be executed by a programmable controller.

[Prior Art] Conventionally, a programmable controller automatically controls electronic equipment by executing a sequence program. The programming device creates this sequence program in a graphic form called a ladder diagram, and then
After checking the format of the program instructions, they are converted into machine language for execution by the programmable controller.

[Problem to be solved by the invention]

However, conventional programmable controllers have different functions depending on the model, and therefore, even instructions in the same sequence may have different formats, and some program instructions may be used only in a certain model.

For this reason, it is not possible to universally perform format checks on programs for multiple models using a single programming device, and a problem with conventional methods is that a dedicated programming device must be connected to the programmable controller for each connected model. It was in the programming device.

SUMMARY OF THE INVENTION In view of the above-mentioned points, an object of the present invention is to provide a programmable controller that can contribute to the generalization of programming devices by checking the format of sequence programs for multiple models using -1 programming devices. The purpose is to provide a programming device.

[Means for Solving the Problems] In order to achieve such an object, the present invention provides a memory that stores data for format checking of a sequence program in advance for each model of a programmable controller that executes the sequence program. an instruction means for instructing a model of a programmable controller connected to the programming device; and an error detection means for detecting an error in a created sequence program using format check data corresponding to the model instructed by the instruction means. It is characterized by having the following.

[For production]

In the present invention, even if the format of the program to be checked is different, the format check of the program can be performed easily.
Focusing on the common point of determining whether the created program command matches the conditions indicated by the specified format data, the format data of each model is stored in the storage means, and the format data is instructed to format the data. By using it for checking, it is possible to check programs of various models with one programming device.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail and specifically with reference to the drawings.

FIG. 1 shows the basic configuration of an embodiment of the present invention.

In FIG. 1, reference numeral 100 denotes a storage means in which format check data is defined and stored for each model of programmable controller that executes the sequence program.

Reference numeral 200 is an instruction means for indicating the model of the programmable controller connected to the programming device.

Reference numeral 300 denotes an error detection means for detecting errors in the created sequence program using format check data corresponding to the model specified by the instruction means.

FIG. 2 shows a specific circuit configuration of an embodiment of the present invention.

In FIG. 2, a central processing unit (CPU), 1 read-only memory (ROM), and a system random access memory (RAM) 3. User RAM4. Keyboard input device 59 Display device 6. Input/output interface (I
lo) 7 are commonly connected to the bus.

The CPUI controls the operation of the entire device and also performs the following processing.

1) Based on the system program stored in ROM2,
Sequence program information input from the keyboard input device 5 is created and stored on the user RAM 4. Further, the created sequence program is displayed on the display device 6.

2) Read the sequence program on the user RAMA in program command units and format data table 2.
-1 format data is used to check the format.

Therefore, the ROM 2 operates as a storage means and the CPUI operates as an error detection means.

3) In addition to the above-mentioned processing, well-known processing such as processing to transfer the created program to the programmable controller is executed.

The ROM 2 stores a table 2-1 that describes control procedures executed by the CPUI and format data used for format checking. As shown in FIG. 3, the format data table 2-1 stores format data for each model code of the programmable controller.

Various conditions such as the correct storage location of the warp, the address setting range of the storage destination for information defined by an identifier (for example, information specified by an output command), the number of various parameters included in the program command, and the range of numerical values are confirmed. Provided.

Returning to FIG. 2, the system RAM 3 temporarily stores various information used in CPU calculations.

The user RAM 4 temporarily stores a created sequence program or a currently executed sequence program transferred from the programmable controller.

The keyboard input device 5 inputs operation instructions for the CPUI in addition to program information to be created. Model information related to the present invention is also entered manually from the keyboard input device. Therefore, the keyboard input device 5 operates as an instruction means.

The display device 6 is used to display a sequence program that is being created or executed. 1107 is located between the CPUI and the programmable controller and performs information transfer processing.

The sequence program format check process in such a circuit configuration will be explained with reference to the flowchart of FIG.

Note that the sequence program is created in advance and is
Assume that it is stored in AM4.

When an operation command to perform a format check is input from the keyboard input device 5, the CPU reads out the control procedure shown in FIG. 4 from the ROM 2 and starts executing it. According to this control procedure, the CPU first inputs a model code that specifies the model of the programmable controller to the keyboard input device 5.
From there, Uke takes (Step SO in Figure 4).

The read address range of the format data table is set in correspondence with this model code.

Next, when the old CP reads the first instruction of the sequence program in the user RAM 4, it decomposes this program instruction into elements according to the format check, that is, instructions (identifiers), parameters, written position information, etc. using the conventional method. Step SL in Figure 4).

Next, the corresponding format data for the element of the creation program instruction is read from the specified model code (for example, F2O in the example in Figure 3) in the format data table 2-1, and if the conditions indicated by the format data are met. Format error judgment is performed to determine whether or not the
Steps S2→S3 in the figure).

The CPU at this time operates as an error detection means.

After completing the comparison process with the format data for other elements, the program instruction at the next address is read and the same error detection process is performed (step S in Figure 4).
3→S6→Sl).

When a format error is detected by this error detection process, a message indicating the content of the error is displayed on the display device 6 (steps S3→S4→S5 in FIG. 4).

By sequentially repeating such processing, format error processing for one program is executed, and this control procedure is ended.

As explained above, in this embodiment, the format data used for format error detection is selected from among the format data for each model, and is set. sequence programs can be created, and one programming device can be connected to and used with multiple types of programmable controllers.

In addition, even when copying a sequence program for a programmable controller of a different model and modifying it to a sequence program for the desired model, using this format error detection procedure makes it possible to easily detect the modified part. becomes.

In addition to this example, the following examples may be mentioned.

1) In this embodiment, the format table is a non-volatile RO
I am trying to store it in M, but it is a non-volatile rewritable storage medium (floppy disk, EEPROM)
etc. may be used for data storage. In this case, when a new model is sold, the format data can be expanded and stored, and the format data can also be modified in response to model upgrades (specification changes). .

〔Effect of the invention〕

As explained above, according to the present invention, sequence programs for multiple types of programmable controllers can be created with one programming device.
It becomes possible to suppress the number of installed programming devices to the necessary minimum. In addition, it becomes possible to easily modify sequence programs for other models, which brings about the new effect of reducing the user's effort in creating programs.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the basic configuration of an embodiment of the present invention, FIG. 2 is a block diagram showing a circuit configuration of an embodiment of the present invention, and FIG. 3 is an explanatory diagram showing an example of a format data table of an embodiment of the present invention. , FIG. 4 is a flowchart showing the control procedure executed by the CPU according to the embodiment of the present invention. 1...cpu. 2... ROM, 2-1... Format data table, 5... Keyboard input device.

Claims (1)

[Claims] 1) Data for checking the format of a sequence program is predetermined for each model of a programmable controller that executes the sequence program, and a storage means in which the data is stored and the model of the programmable controller connected to the programming device is specified. A programming device for a programmable controller, comprising: an instruction means; and an error detection means for detecting errors in a created sequence program using format check data corresponding to a model instructed by the instruction means.