JPH0454502A - Programmable controller system - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a programmable controller system for automatically controlling electronic equipment, and particularly to a programmable controller system that has a programming device that can be connected interchangeably to multiple types of programmable controllers. Regarding the controller system.

[Prior Art] A programmable controller automatically controls electronic equipment by executing a sequence program created by a user in a programming device.

Multiple models of programmable controllers are available.
It is now possible to select a programmable controller that has functions that match the control content of electronic equipment.

Additionally, programming devices that can be universally connected to multiple types of programmable controllers have also been developed.

[Problem to be solved by the invention] However, in conventional systems of this type, the performance and functions of programmable controllers have been improved, so when a new model or version (performance) of a programmable controller is used, the programming device cannot cope with the problem. Sometimes. Specifically, even if a sequence program is created using program instructions (operation instructions) for implementing a new function, the program instructions cannot be deciphered and the language cannot be converted into a program for a programmable controller. Therefore, it is easy for the user to input an operation command that can be used with a certain programmable controller into a programmable controller that cannot be used.

SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to provide a programmable controller and a programmable controller that can prevent the user from erroneously inputting sequence programs or operation instructions even when a programming device is connected to a plurality of different types of programmable controllers in exchange. Our goal is to provide equipment and systems.

[Means for Solving the Problems] In order to achieve such an object, the present invention provides storage means that stores attribute information indicating executable functions of a programmable controller, and a storage means that stores attribute information indicating executable functions of a programmable controller; In some cases, it is characterized by comprising a transmitting means for transmitting the attribute information of the storage means to the programming device.

Further, the attribute information of the present invention is characterized in that the attribute information includes an operation instruction executable in the programmable controller.

Furthermore, the present invention provides a receiving means for receiving attribute information indicating executable functions of a connected programmable controller from the programmable controller, an input means for inputting an operation command to the programmable controller, and an attribute received by the receiving means. The controller is characterized by comprising a determining means for determining whether or not the operation command input from the input means is executable in the programmable controller based on information.

Furthermore, the present invention is characterized by comprising a receiving means for receiving attribute information indicating executable functions of a connected programmable controller from the programmable controller, and a display means for displaying the attribute information received by the receiving means. shall be.

Furthermore, the present invention provides a storage means that stores attribute information indicating executable functions of a programmable controller, and a transmission that transmits the attribute information of the storage means to the programming device when the programmable controller is connected to the programming device. a programmable controller having: a programmable controller having: a receiving means for receiving predistribution attribute information from the programmable controller; an input means for inputting an operation command to the programmable controller; and a programming device that determines whether or not an operation command input from the programmable controller can be executed by the programmable controller.

[For production]

In the present invention, since the program controller transmits attribute information indicating the functions that can be realized in that model when connected to the programming device, it is possible to know the functions of the programmable controller by displaying the attribute information on the programming device. I can do it. As a result, the user can issue operation instructions according to the function.

Furthermore, since the determination means automatically checks whether or not an action instruction given by the user can be executed based on this attribute information, erroneous input by the user is reliably prevented.

[Example] Hereinafter, an example of the present invention will be described in detail with reference to the drawings. FIG. 1 shows the basic configuration of an embodiment of the present invention.

In FIG. 1, a programmable controller 1000
a storage means 1100 that stores attribute information indicating executable functions of the programmable controller; and a transmission means 1200 that transmits the attribute information of the storage means to the programming device when the programmable controller is connected to the programming device. It is equipped with

This attribute information includes operational instructions executable in the programmable controller.

The connected programming device 2000 includes a receiving means 2100 for receiving attribute information indicating executable functions of the programmable controller 1ooo from the programmable controller, an input means 2300 for inputting operation commands to the programmable controller, and information received by the receiving means. and determining means 2400 for determining whether or not the operation command input from the input means is executable in the programmable controller based on attribute information. Furthermore, the display means 2200 is the receiving means 210.
Display the attribute information received by 0.

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

In FIG. 2, the programmable controller 100 includes an arithmetic processor 101. Attribute information memory 102° input/output interface (Ilo) 103. User program memory 104. An input/output device 105 is connected to the common bus.

The arithmetic processor 101 is a user program memory 10
The operation of the controlled device 300 is controlled by reading out the sequence program No. 4 and executing the calculation. Specifically, an information signal indicating an operating state is received from the control device 300 via the input/output device 105, and based on this information signal, an operation instruction is issued to the device to be controlled according to a logical operation formula specified in the sequence program. decide.

When the arithmetic processor 101 confirms the connection of the programming device 200, it transmits the attribute information in the attribute information memory 102 to the programming device 200 via l10103. Therefore, the arithmetic processor 101 operates as a transmitting means of the present invention, and the attribute information memory 102 operates as a storage means.

When the arithmetic processor 101 receives a sequence program to be executed from the programming device 200, it stores it in the user program memory 104.

A nonvolatile memory is used for the attribute information memory 102, and the stored contents are retained even when the power is turned off. The attribute information is information indicating various functions that can be executed by the programmable controller 100, and is formed in the form of a table as shown in FIG.

The information included in the attribute information includes the model code named for the programmable controller, the version number of the system program that controls the operation within the programmable controller (program revision number),
The program storage capacity of the user program memory 104, the number of points that can be input/output to and from the controlled device (specifically, the memory capacity of a data memory (not shown) that stores input/output information), the executable operation commands, i.e. , program instruction code is provided.

In this example, all operating instructions are written in the table in the form of codes for all models, and each programmable controller has a 1 bit (°°1"/"
0'') is added to each of the above program instructions.

l10103 is connected to l10206 on the programming device side and transfers input/output information. Further, the connection of the programming device 200 is confirmed by outputting a response request to the programming device 200 and receiving the response signal at 110103, as is well known in the message communication system.

The large pressure device 105 performs a process of converting information signals input and output between the controlled device 300 and the arithmetic processor 101 in accordance with the transmission method.

The programming device 200 includes a central processing unit (C
PU) 201. Attribute information memory 202. Keyboard input device 2031 Display device 204. User program memories 205 and 110206 are connected via a bus.

After connecting to the programmable controller 100, the CPU 201 stores attribute information transmitted from the programmable controller 100 in the attribute information memory 202.

Further, the CPU 201 creates a sequence program by expanding and storing program instructions for the sequence program input from the keyboard input device 203 in the user program memory 205. The created sequence program is transmitted to the programmable controller 100 by the CPU 201 in response to a transfer instruction from the keyboard input device 203.

Prior to creating this sequence program, the CPU 201 not only displays the stored contents (attribute information) of the attribute information memory on the display device 204, but also inputs data from the keyboard input device 203 based on the above attribute information in the sequence program creation mode. It is determined whether the program command is executable in the programmable controller 100. In particular, if a program instruction cannot be executed, an error message is displayed on the display device 204.

Therefore, the CPU 201 operates as the receiving means 9 determining means of the present invention. Further, the keyboard input device 203 operates as an input means, and the display device 204 operates as a display means.

The operation of such a programmable controller system according to the present invention will be explained with reference to the flowcharts of FIGS. 4 and 5.

Note that FIG. 4 shows a control processing procedure executed by the arithmetic processor 101 on the programmable controller 100 side.

FIG. 5 shows a control processing procedure executed by the CPU 201 on the programming device 200 side. These control processing procedures are actually written in the form of a programming language for realizing the functions.

In FIG. 2, when the system is powered on, an arithmetic processor 10 on the programmable controller 100 side
In step 1, the control procedure shown in FIG. 4 is started.

First, the arithmetic processor 101 transmits a response request to the programming device 200 via l10103 (
Step 5100 of FIG. 4).

When the CPU 201 of the programming device 200 receives the response request (step 5200 in FIG. 5), it responds with an information signal indicating connection (step 520 in FIG. 5).
1).

When the arithmetic processor 101 on the programmable controller 100 side receives this response signal, it reads the attribute information from the attribute information memory 102 and sends it to the programming device 20.
0 (step 5102 in FIG. 4).

After this, the arithmetic processor 101 executes the conventional initialization process for starting the system (step 5 in FIG. 4).
103).

On the other hand, upon receiving the attribute information from the programmable controller 100, the CPU 201 of the programming device 200 stores it in the attribute information memory 202. The attribute information is also displayed on the display device 204 to inform the user of the executable functions and processing contents of the connected programmable controller (step 5202 in FIG. 5).

Thereafter, each time the CPU 201 inputs information from the keyboard input device 203, the CPU 201 refers to the attribute information and the stored contents of the memory 202 and inputs the input information to the programmable controller 10.
0, it is determined whether the input information can be processed or not, and only processable input information is accepted.

For example, when a program command is input in the sequence program creation mode, the CPU 201 checks that the program command is grammatically correct by comparing the program command and each program command in the attribute information memory 202. do. Next, it is confirmed that the input program command is executable based on the executable information in the attribute information (step 5204 in FIG. 5).

In this determination process, if it is determined that execution is "impossible", an error message is displayed on the display device 204 (steps 5205→5207 in FIG. 5). Further, if execution is determined to be "possible" in the above determination process, the instruction of the input information is executed by the CPU 201. In the case of inputting program instructions for the creation sequence program, the input program instructions are stored in the user program memory 205 (steps 5205→5206 in FIG. 5).

As described above, in this embodiment, the user can be informed of the processing content of the connected programmable controller by viewing the attribute information (see FIG. 3) displayed on the display device 204 when the system is started.

In addition, since the input information input by the user from the keyboard input device 203 is automatically checked for grammar in the programming device 200, erroneous input by the user is prevented. Further, even if the connected programmable controller is replaced, the user does not need to issue any operation instructions, and the input operation effort of the user can be reduced.

In addition to the present invention, the following examples may be mentioned.

l) Although this embodiment shows an example in which the attribute information is transferred from the programmable controller to the programming device when the power is turned on, the above-mentioned transfer may also be performed at the time of recovery after a failure occurs.

2) Of course, the program instructions to be checked may include operation instructions for the programmable controller, such as sequence program transfer instructions and execution instructions.

3) Various forms can be considered for displaying attribute information. For example, it is conceivable to display usable instructions in a single column table in the form of letters, or in the form of graphic symbols in a sequence circuit. Further, it is convenient for the user to display the instruction contents of the available commands together with the commands.

4) A nonvolatile memory may be used as the attribute information memory 102 of the programmable controller 100, but if a rewritable memory is used, when a new model is added to the programmable controller, the attribute information can be additionally registered. can. In this case, additional attribute information will be input from the programming device.

[Effects of the Invention] As described above, according to the present invention, even when a programming device is interchangeably connected to multiple systems or when a programmable controller is replaced with another model, the programmable controller that is connected can execute the You can know the functions. As a result, it is possible to reduce the user's erroneous manual effort regarding operation instructions that vary depending on the model.

Further, since the programming device automatically checks the operation command corresponding to the model of the connected programmable controller, erroneous input by the user is reliably prevented.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the basic configuration of an embodiment of the present invention. FIG. 2 is a block diagram showing the system configuration of an embodiment of the present invention. FIG. 3 is an explanatory diagram showing the contents of an attribute information table of an embodiment of the present invention. , FIG. 4 is a flowchart showing the execution procedure of the programmable controller according to the embodiment of the present invention, and FIG. 5 is a flowchart showing the execution procedure of the programming device according to the embodiment of the invention. ...programmable controller, ...arithmetic processor, ...attribute information memory, ...input/output interface (Ilo), ...user program memory, ...input/output device, ...programming device, ... central processing unit (CPLI), ... attribute information memory, ... keyboard input device, ... display device, ... user program memory, ... input/output interface (Ilo), ... ...Controlled equipment. Figure 3 is an explanatory diagram of the existence of the sexual information table for the unreleased Bl1% example.

Claims (1)

[Scope of Claims] 1) Storage means storing attribute information indicating executable functions of a programmable controller; and when the programmable controller is connected to a programming device, the attribute information of the storage means is transmitted to the programming device. A programmable controller characterized by comprising a transmitting means for transmitting. 2) The programmable controller according to claim 1, wherein the attribute information includes an operation instruction executable in the programmable controller. 3) receiving means for receiving attribute information indicating executable functions of the connected programmable controller from the programmable controller; input means for inputting operation commands for the programmable controller; and based on the attribute information received by the receiving means, A programming device comprising: determination means for determining whether or not an operation command input from the input means is executable in the programmable controller. 4) A programming device comprising: receiving means for receiving attribute information indicating executable functions of a connected programmable controller from the programmable controller; and display means for displaying the attribute information received by the receiving means. . 5) A storage device that stores attribute information indicating executable functions of the programmable controller, and a transmission device that transmits the attribute information of the storage device to the programming device when the programmable controller is connected to the programming device. a programmable controller; a receiving means for receiving the attribute information from the programmable controller; an input means for inputting an operation command to the programmable controller; and an operation input from the input means based on the attribute information received by the receiving means. A programmable controller system comprising: a programming device having a determination means for determining whether an instruction is executable in the programmable controller.