JPS63219091A - Maintenance of equipment - 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] [Industrial application field] The present invention relates to a method of maintaining equipment such as a printing device.

(Prior Art) In recent years, printing devices have come to be controlled by microcomputers, but their maintenance has not necessarily been performed using modern methods.

For example, if a problem occurs while operating a printing device, it is necessary to identify the location of the problem and investigate the cause of the problem, but in the past, engineers from the manufacturer or agency would go to the user's location and investigate the problem before it occurs. The engineer conducted another trial run while asking the user about the operating status of the equipment, especially the status of the equipment from the start of operation until the occurrence of a problem, and verified it with his own eyes.

[Problem that the invention seeks to solve]

However, with this method, it takes a lot of time and effort to identify the location where the trouble occurs and to understand the cause of the trouble, and it also tends to lack objectivity, which may lead to problems that cannot be handled completely.

The present invention has been made with the above-mentioned considerations in mind, and its purpose is to provide a method that allows equipment maintenance to be performed reliably and easily.

[Means for solving problems]

In order to achieve the above object, the device maintenance method according to the present invention stores historical data of the device in a data area that can hold data, and maintains the device based on this stored historical data. The points are distinctive.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an outline of the control section of a printing apparatus to which the present invention is applied. Although not included, there are a power switch, a print start switch, a print stop switch, a switch for setting the print speed, a switch for setting the print position on the paper, and a display section for displaying the number of sheets set using the numeric keypad 2, etc.

3 is a CPU as a main control unit, for example, a microcomputer, and this CPU 3 has ROM 4 and R
AM5 is built in. The ROM 4 stores control data for controlling each member of the printing section 7, which will be described later. Further, the RAM 5 is backed up by a bank-up power source 6 such as a battery or a capacitor, so that it can hold data. As shown in FIG. 2, this RAM 5 contains control II program areas 5A, RA
In addition to the M section 5B, there is a data area 5C for storing historical data.
is the provision.

The CPt 13 includes the display operation section 1 and the printing section 7.
A plate cylinder drive unit 8 (9 is a plate cylinder drive motor), a paper feed roller drive motor 10. Pressure roller driving plunger 11. *The feeding section drive morph 12 etc. are connected, and the above printing section 7 is connected to the data area 5C in RAM S.
This is so that the historical data of each member installed inside is stocked. That is, the historical data here refers to, for example, the load status of each motor 9, 10, 12, etc., load current, operating time, ink and water consumption, type and number of troubles that occur, and other information necessary for maintenance of the printing device. Refers to management information.

In the printing apparatus having the above configuration, the data of each part during operation is stocked as historical data in the data area 5C in the RAM S.

By the way, if a problem occurs with the printing device, if the cpυ3 built into this printing device is healthy, this CP
The history data stored in the data area 5C of the RAM 5 can be read using the U 3, and based on this, the content of the trouble and its cause can be analyzed.

However, if a problem occurs in the printing device, a problem may also occur in the CPU 3, making it difficult to use the CPLI 3. Therefore, the data area 5c may be separated from the printing device. It is possible to configure

A preferred embodiment in such a case will be described below.

In FIG. 3, reference numeral 2o denotes a printing device, which is equipped with a printing section similar to that shown in FIG. 1 above. 21 is a CPU built into this printing device 20, 22 is 120M, and 23 is a RAM. 24 is connected to the printing device 2 via the connector 25.
This is an IC card that is removably installed in the RAM 26, and a RAM 26 as a data area and a backup power source 27 for the RAM 26 are built into the IC card. This rc cart 24 connects to the RAM 2 of the CPU 2L via the connector 25.
3, all history data for each part of the printing device 20 is stored in the RAM 26 within this IC card 24.

If trouble occurs in the printing device 20, even if the CPU 21 of the printing device 20 is disabled, the IC
Since the card 24 stores all the history data of each part up to the occurrence of a trouble without being damaged, this IC card 24 can be removed from the printing device 20 and transferred to another processing CP.
If processing is performed at U, the printing device 20 that caused the trouble
The history of each part of the system is reproduced, and based on this, it is possible to investigate the content and cause of the problem.

In the above, a maintenance program may be built into the RAM 26 of the IC card 24 so as to be able to command certain maintenance operations, and a trouble program may be stored in the RAM 26 to determine the cause of the trouble based on the above historical data when a trouble occurs. A program for commanding the processing may be incorporated, and a program for controlling the printing device 20 may be incorporated.
In order to relate to the maintenance program and troubleshooting program in the RAM 26, it may be created so that it can be divided into blocks for each processable function and tested for each function.

Incidentally, although the above-mentioned embodiments are all maintenance methods for printing devices, the present invention is not limited to this.
For example, it can be applied to the maintenance of equipment such as automobiles.

〔Effect of the invention〕

As explained above, the device maintenance method according to the present invention stores historical data of the device in a data area that can hold the data, and maintains the device based on this stored historical data. This makes it possible to maintain equipment reliably and easily.

[Brief explanation of drawings]

1 and 2 show a first embodiment of the present invention, FIG. 1 is a block diagram schematically showing a control unit of a printing device to which the present invention is applied, and FIG. 2 explains the contents of the RAM. Figure for, 3rd
The figure is a configuration diagram showing a second embodiment of the present invention. 5C...Data area, 26...Data area (R
AM). Applicant Hamada Printing Machinery Co., Ltd. Representative Hideo Fujimoto Patent Attorney Figure 3 26...Data area (1?AM) 〈() Voluntary procedure amendment 1. Indication of the case Patent Application No. 53561 of 1988 2, Title of the invention Equipment maintenance method 3, Person making the amendment Relationship to the case Patent applicant Address Name Name) Hamada Printing Machine Manufacturing Co., Ltd. 4, Agent (Insert a line break between line 12 and line 13 on page 4 of the specification and add the following phrase. In Figure 1, 13 indicates control input from a rim switch, sensor, etc.) (2) Figure 1 should be corrected as shown in the attached sheet.

Claims (1)

[Claims] A device maintenance method characterized in that historical data of the device is stocked in a data area capable of holding the data, and the device is maintained based on the stored historical data.