JPH03123997A - Process monitor display device - Google Patents

Abstract

PURPOSE:To realize preventive maintenance by executing fault diagnosis processing in parallel without interrupting processing in the course of execution, and displaying a result on a part of a picture in the course of the execution when a diagnosis command is inputted by a keyboard, etc., during the execution processing of a program. CONSTITUTION:A CPU 1 executes a user program usually, and at every one cycle of the execution, it decides the presence of an on-line self diagnosis command. When the prescribed diagnosis start command is inputted by a key input device 7 or a touch panel 8, the CPU executes the fault diagnosis processing in parallel without interrupting the processing in the course of execution, and displays the result on a system information display area 13 on the picture 11 of a display device 6. Accordingly, an operator is informed of the fault diagnosis result while continuing monitor by the display area 12 for process monitoring. Thus, the preventive maintenance can be executed without inducing the stop of a system.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to an improvement of a process monitoring device that monitors and displays various production processes and the like.

(Prior Art) This type of process monitoring display device repeatedly executes a program created by a user in a predetermined language corresponding to the process to be monitored at regular intervals, thereby monitoring and displaying the process.
Monitoring, etc. are being carried out.

That is, FIG. 4 shows the operation of the conventional process monitoring and display device, and shows that the execution of the user program is repeated at regular intervals.

Further, such a process monitoring display device is equipped with a program support function for creating a normal screen program and a self-diagnosis function for self-diagnosing peripheral devices.

Conventionally, these functions have been independent from each other, and it is strategic to operate them selectively by switching modes.

On the other hand, the recent rapid development of semiconductor technology has made microprocessors more sophisticated, higher in performance, and more highly integrated.As a result, various peripheral devices incorporate such microprocessors, resulting in the decentralization of functions. As peripheral equipment has become more intelligent, it has become equipped with self-diagnosis functions of its own, allowing for quick diagnosis and quick recovery in the event of a failure.

(Problem to be Solved by the Invention) As described above, the conventional process monitoring display device has a mode for executing a program, a mode for creating a program, and a mode for creating a program.
It is equipped with a self-diagnosis mode, etc., and if a failure occurs not only in the peripheral equipment but also in the main unit itself, the program execution mode can be stopped, the program can be switched to the self-diagnosis mode, and the self-diagnosis can be executed. It is now possible to check the faulty part and the details of the fault, and restore the system to its original state in one day due to the fault or repair.

However, it is a big problem in terms of production to stop the system and repair it, and it is not possible to know the extent of the problem in advance for items such as touch panels that accumulate dust over time and eventually break down. There have been problems such as the fact that the diagnosis may reveal the problem only after it has occurred.

This invention was made in view of the above-mentioned problems, and its purpose is to execute failure diagnosis in parallel with the execution of the user program and stop the process to be monitored. It is an object of the present invention to provide a process monitoring device capable of notifying an operator of self-diagnosis results.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, the present invention includes a user program execution process that executes a program created by a user in a predetermined language in response to a monitored process. , a touch panel, a failure diagnosis process for self-diagnosing failures of peripheral devices such as printers, etc., during execution of the user program execution process, a predetermined diagnosis start command is issued by operation of a keyboard, touch panel, etc. If input, the fault diagnosis process is executed in parallel with the user program execution process without interrupting it, and if the fault diagnosis process is executed during the execution of the user program execution process, the user program execution process is executed. A system information display area is provided in a part of the inner screen, and the failure progress result is displayed in this area.

(Function) According to such a configuration, as long as a predetermined diagnosis start command is input by operating the keyboard, touch panel, etc. while the user program execution process is being executed, the user program execution process can be executed in parallel without interrupting the user program execution process. A failure diagnosis process is executed, and a system information display area is provided in a part of the screen during execution of the user program, and the result of the failure diagnosis is displayed in this area.

(Embodiment) FIG. 1 is a block diagram schematically showing the overall configuration of a process monitoring and display device to which the present invention is applied.

As shown in the figure, this process monitoring and display device is centrally controlled by a CPUI mainly composed of a microprocessor.

The CPU system bus 9 has a memory 29 used as a work area, etc. A display device (consisting of a CRT, etc.)
6, a display control circuit 3 for controlling the key human power interface 4, which interfaces the key human power device 7; A touch input/output interface 5 that interfaces with the touch panel 8 is connected.

The system bus 9 is connected to a monitored process via a process interface (not shown).

Further, it is assumed that the touch panel 8 has a built-in CPU, has a self-diagnosis function, and is connected to the touch input/output interface 5 through a communication system.

Next, FIG. 2 is a flowchart showing only the parts related to the present invention out of the various processes executed by the CPUI.

As shown in the figure, the CPU constantly executes the user program (step 201), and each time the user program executes one round, it determines whether there is an online self-diagnosis command (step 202). ).

In this state, when an operation corresponding to a predetermined diagnosis start command is performed on the key device 7 or the touch panel 8 (step 202 YES), the screen 11 of the display device 6 will display a message as shown in FIG. In addition to the display area 12 for process monitoring, a system information display area 13 is displayed (step 203), and the diagnostic results for the device specified among the peripheral devices are displayed here (step 204).

As described above, in this embodiment, during the execution of the user program execution process, the key human power device 7. , touch panel 8
When a predetermined diagnosis start command is input by an operation such as
The fault diagnosis process is executed in parallel with the user program execution process without interrupting it (step 2).
01.203), a system information display area 13 is provided in a part of the screen during execution of the user program (step 203), and the result of the failure diagnosis is displayed there.

Therefore, while continuing to monitor the process, the operator can also know the diagnostic results of the specified peripheral equipment. can prevent such failures.

In the above embodiment, a touch panel was used as a peripheral device, but in the 5C8I interface that interfaces with a hard disk or floppy disk,
If these devices are not accessing the disk, you can perform a preliminary self-diagnosis in the same way as a touch panel, or in the case of a printer, you can perform a self-printing test to check the density of the ink ribbon, etc. can.

According to the above embodiment device, by adding a simple program to the conventional control program (see Fig. 4), self-diagnosis can be performed online. In the case of items where dust accumulates, the situation can be detected by diagnosing the intensity of light received at the light receiving element before a failure occurs, allowing the maintenance period to be predicted in advance, which may cause the system to stop. This makes it possible to perform advance maintenance of the system without any trouble.

[Effects of the Invention] As is clear from the above description, according to the present invention, self-diagnosis can be performed before a failure occurs without stopping the user program being executed, and the results can be displayed. Preliminary maintenance of the system can be performed without any inconvenience.

[Brief explanation of drawings]

FIG. 1 is a block diagram schematically showing the overall configuration of a process monitoring display device according to the present invention, and FIG. 2 is a flowchart showing only the portions related to the present invention among various processes executed by the CPU. FIG. 3 is an explanatory diagram showing an example of a screen during online self-diagnosis, and FIG. 4 is a flowchart for explaining the operation of the conventional device. 1...CPU 2...Memory 3...
・Display control circuit 4...Key human power interface 5...Touch input/output interface

Claims (1)

[Claims] (1) A process monitoring display that includes a user program execution process that executes a program created by the user in a predetermined language corresponding to the monitored process, and a failure diagnosis process that self-diagnoses failures in peripheral devices such as touch panels and printers. In the device, when a predetermined diagnosis start command is input by operating the keyboard, touch panel, etc. while the user program execution process is being executed, the failure diagnosis process is executed in parallel without interrupting the user program execution process. and, if a fault diagnosis process is executed during execution of the user program execution process, a system information display area is provided in a part of the screen during execution of the user program, and the result of the failure diagnosis is displayed in this area. A process monitoring display device characterized by the following.