JPH01205208A - Monitor - Google Patents

Abstract

PURPOSE:To hold extendability in the monitoring of the internal information of a programmable controller by registering the internal information name of the programmable controller with the form of the polynomial with a monitoring registering means and attaining the operation of four fundamental rules of arithmetics. CONSTITUTION:A monitoring registering means 16 prepares the polynomial so as to make the internal information name of a programmable controller 8 as respective items of the polynomial together with a displaying position on a CAT 3 as information for monitoring, stores this into the prescribed area of a memory device 6 and therefore, the operation of the four fundamental rules of arithmetics can be also executed for internal information. A internal information calculating means 17 executes respective types of arithmetic processing including the operation of the four fundamental rules of the arithmetics to the data fetched from the internal information image area of a memory 6 corresponding to the polynomial registered by the monitoring registering means 16 and the result is stored into the prescribed area of the memory 6. Thus, the monitoring with the extendability can be executed.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a monitoring device for factory automation (hereinafter referred to as FA), which is connected via a line to a programmable controller that controls FA equipment in a factory, etc. , by monitoring the internal information of this programmable controller, F
The present invention relates to a monitoring device that can monitor the status of A device.

[Conventional technology]

FIG. 3 is a system configuration diagram showing a schematic configuration of an FA monitoring device and a system to which this is applied. (1) is FA
This FA monitoring device (1) is connected to a programmable controller (8) via a cable (10).
) is connected by line. Each programmable controller (8) is connected to and controls a controlled device (9).

In addition, the monitoring device (1) for FA includes the main body (2), CRT
(3) and a keyboard (4).

The main body (2) includes a central processing unit (CPU) (5) that decodes and executes monitoring registration information, a memory (6) that stores various data for monitoring, a CPU (5), and a programmable controller (8). FIG. 4 is a block diagram showing the configuration of a conventional FA monitoring device. Various information for monitoring the FA equipment is registered and stored in a predetermined area of the memory (6) by a monitoring registration zero means (11) provided in the CPLI (5).

Information for such monitoring includes the display position on the display device, the internal information name of the programmable controller (8), and the multiplier value and divisor value for the internal information. C.P.
The U (5) updates the internal information of the programmable controller (8) by inputting it into the internal information image area of the memory (6) at a predetermined timing via the link interface device (7). Such operations are performed by internal information updating means (13) provided within the CPU (5).

Next, the internal information calculation means (14) provided in the CPU (5) calculates the registered programmable controller (
8) is multiplied and divided by a preset multiplier value and a divisor value, and the results are stored in a predetermined area of the memory (6).

The result of this calculation is the CR7 installed in the CPU (5).
The display means (15) displays it at a pre-specified display position. By repeatedly executing such processing, internal information of the programmable controller (8) is monitored.

FIG. 5 is a flowchart for explaining the operation of the apparatus shown in FIG. 4. First, enter the name of the internal information of the programmable controller (8) and the multiplier and divisor values for that internal information using the keyboard while looking at the CRT (3).
Register from 4) by key input. At the time of registration, the monitoring registration means (step 1) in [:PU (5) operates and registration processing is performed (step 5a). Next, when the keyboard (4) is operated to execute monitoring, the monitoring execution key-in operation means (12) is activated and the process proceeds to step 5b.
), internal information is taken in from the programmable controller (8).

That is, in response to key operations, internal information of the programmable controller (8) is received via the interface device (7) at regular intervals, and is input to and updated in the internal information image area of the memory (6). This internal information is taken in and updated by the internal information updating means (13) (step 5c).

Next, the value of the registered internal information name of the programmable controller (8) is retrieved by referring to the internal information image area (step 5d). Furthermore, it is determined whether a multiplier value and a divisor value for the internal information are registered (step 5e), and if they are registered, the internal information value of the programmable controller (8) is multiplied by the multiplier value. Or,
The result is divided by the divisor value and stored in a predetermined area of the memory (step 5f).

In addition, if there is no registration, the programmable controller (
The internal information value of 8) is directly stored in the memory (6) as the calculation result.
) (step 5j), then CRT (3)
Display the calculation result at the specified display position above (step 5g
).

By repeating this series of operations (steps 5c to 5g), internal information of the programmable controller (8) is monitored. However, when you want to end monitoring (
In step 5h), if a key operation is performed to end the monitoring (step 51), the monitoring ends.

[Problem to be Solved by the Invention] Since the conventional FA monitoring device is configured as described above, one internal information name is registered for one internal information name at the time of registering monitoring of internal information of a programmable controller. Only monitoring registration was allowed, and there were only two types of operations for this internal information name: multiplication and division. Therefore, there has been a problem in that the monitoring function is limited when monitoring FA equipment.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to obtain a monitoring device for FA that is capable of scalable monitoring.

[Means to solve the problem]

A monitoring device according to the present invention includes a monitoring registration means for creating a polynomial in which each term is a plurality of internal information names of a programmable controller, and storing the polynomial in a predetermined area of a memory together with display position information; an internal information updating means that inputs and updates internal information into a predetermined area of a memory at regular intervals, and calculates by substituting the latest internal information obtained from this internal information updating means into each term of a polynomial. Internal information calculation means that stores the results in a predetermined area of memory, and a CR that displays the calculation results at a predetermined position on a CRT according to display position information.
7 display means are provided, the information to be displayed on the line is calculated in accordance with the desired format, and is displayed online at a designated display position.

[Effect]

In the monitoring device according to the present invention, since the monitoring registration means registers the internal information name of the programmable controller as each term of the polynomial, it is possible to perform diverse monitoring registration for one internal information name. The arithmetic processing performed on this monitoring registration name is not limited to multiplication and division.

〔Example〕

An embodiment of the present invention will be described below with reference to FIG. FIG. 1 is a block diagram showing the configuration of a monitoring device for FA according to an embodiment of the present invention. In the figure, blocks that are the same as those shown in FIG. 4 are given the same reference numerals, and detailed explanation thereof will be omitted.

In this invention, the monitoring registration means (16) and the internal information calculation means (17) provided in the CPU (5) are the fourth
It has a different function from the conventional device shown in the figure.

That is, the monitoring registration means (16) creates a polynomial in which each term of the polynomial is the internal information name of the programmable controller (8) as well as the display position on the CRT (3) as information for monitoring, and stores this. It is stored in a predetermined area of the device (6).

Therefore, unlike conventional devices, four arithmetic operations can be performed on internal information. Further, the internal information calculation means (17) performs various arithmetic processing including four arithmetic operations on the data retrieved from the internal information image area of the memory (6) corresponding to the polynomial registered by the monitoring registration means (16). The result is stored in a predetermined area of the memory (6).

Next, the operation of the apparatus shown in FIG. 1 will be explained in detail based on the flowchart shown in FIG.

First, when a polynomial whose terms are the internal information names of the programmable controller (8) is entered using a key while looking at the CRT (3), the monitoring registration means (16) registers the polynomial (step 2a) in a predetermined area of the memory (6). Store in. Since what is registered at this time is a polynomial, unlike conventional methods, four arithmetic operations are also possible.

Display position information indicating the display position on the CRT (3) is also registered at the same time. Next, when a key is operated to execute monitoring, the monitoring execution key-in operation (12) is operated (step 2b), and the monitoring process is executed. That is, the internal information from the connected programmable controller (8) is input to the internal information image area of the memory (6) via the link interface device (7) at regular intervals.

Therefore, the internal information updating means (13) updates this content (step 2C), and extracts the internal information value of the programmable controller (8), which is a term in the registered polynomial, by referring to the internal information image area (step 2d).
. Furthermore, if the contents of the polynomial include four arithmetic operations, the results of the corresponding operations are stored in the memory (6
) in a predetermined area (step 2e). Next, CR
T (3) Display the calculation result at the designated display position above (step 2f).

By repeating this series of operations (steps 2C to 2f), internal information of the programmable controller (8) is monitored. When it is desired to end the monitoring (step 2g), a key operation for ending the monitoring is performed (step 2h), and the monitoring is ended.

〔Effect of the invention〕

As explained above, according to the present invention, the monitoring registration means registers the internal information name of the programmable controller in the form of a polynomial, and also enables four arithmetic operations, so that the internal information of the programmable controller can be monitored. , it has the advantage of being extensible.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an FA monitoring device showing an embodiment of the present invention, FIG. 2 is a flowchart explaining the operation of the device in FIG. 1, and FIG. 3 is a system to which the FA monitoring device is applied. FIG. 4 is a block diagram showing an example of a conventional FA monitoring device, and FIG. 5 is a flowchart for explaining the operation of the device shown in FIG. (1) is a monitoring device for FA, (3) is (:RT, (5) is CPU, (6
) is memory, (12) is monitoring execution key-in operation means, (
13) is an internal information updating means; (16) is a monitoring registration means; (17) is an internal information calculating means; (15) is a CR7 display means. In addition, in the figures, the same reference numerals indicate the same or corresponding parts. Agent Masuo Oiwa Procedural amendment (voluntary) 20 Name of invention monitoring device 3, person making the amendment Representative Moriya Shiki 6, Contents of amendment (1) “Depends on the description in the first line of page 2 of the specification; ” should be amended to read “in relation to”. (2) “Memory (6) and CPU” on page 2, line 18 of the specification
(5) and” was replaced with “Memory (6), CPU (
5) and”. that's all

Claims (1)

[Claims] In a monitoring device that monitors a programmable controller that controls factory automation equipment, a monitoring registration means that creates a polynomial in which each term is a plurality of internal information names of the programmable controller and stores it in a first memory together with display position information. and internal information updating means for inputting and updating internal information of the programmable controller into a second memory at regular intervals; and substituting the latest internal information obtained from the internal information updating means into each term of the polynomial. 1. A monitoring device comprising: internal information calculation means for calculating and storing the calculation results in a third memory; and display means for displaying the calculation results at a predetermined position on a display screen according to the display position information.