JPS6289118A - numerical control device - 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 numerical control device having a fault diagnosis function for detecting and diagnosing a fault.

[Conventional technology]

FIG. 2 is a block diagram showing the configuration of a conventional numerical control device. In the figure, 1 is a control section including a central processing unit;
3 is a storage unit, 3 is a calculation unit, 4 is a display unit, 5 is a controlled object, 6
1 is an external control device; 11 is a fault diagnosis circuit included in the control unit 1; 12 is a fault content output circuit included in the control unit 1;
is a ninth fault diagnosis function storage unit that executes fault diagnosis; 22
is a failure content display data storage unit for displaying failure details.

Next, the operation will be explained. The signal input from the controlled object 5 is judged by the fault diagnosis circuit 11 as to whether or not there is a fault. If a fault occurs, the fault diagnosis is performed by the fault diagnosis function storage section 21, and the corresponding fault display data is sent to the control section. IK
The data is extracted from the failure content display data storage section 22 and displayed on the display section 4. In addition, the control unit 1 stores the corresponding failure data in the failure content display data storage unit 22 in the failure content output circuit 1.
2 to the external control device 6.

[Problem that the invention seeks to solve]

Conventional numerical control devices are configured as described above, so when a failure occurs, it is possible to display the details of the failure, but when the cause of the failure is removed, the failure display is cleared and this is recorded. The type of failure that occurred can only be done manually.

There were problems such as the number of times it was used was not clear, and troubleshooting could be delayed.

This invention was made to solve the above-mentioned problems, and it is possible to memorize the history of failures, and
The object of the present invention is to obtain a numerical control device that can display the cause of failure.

[Means for solving problems]

The numerical control device according to the present invention is provided with a failure history storage unit that stores a history of failure occurrence times and failure details in the storage unit.

[For production]

The failure history storage unit in the present invention is capable of displaying or outputting the failure history to the outside, and enables accurate and quick failure diagnosis.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. 1st
In the figure, 22 indicates the details of the failure that is expected to occur;
23 is a failure history storage unit that stores the failure cause and failure cause corresponding to the failure content, and 23 is a failure history storage unit that stores the history of failure occurrence time and failure content; the other components are the same as those shown in FIG. 2. Yes, the same reference numerals indicate the same or equivalent parts.

Next, the operation will be explained. The signal input from the controlled object 5 is judged by the fault diagnosis circuit 11 as to whether or not there is a fault.
When a failure occurs, a failure diagnosis is performed by the failure diagnosis function storage unit 21, and the details of the failure and its causes are retrieved from the failure details display data storage unit 22 and displayed on the display unit 4, and if necessary, the details of the failure are The signal is output to the external control device 6 through the output circuit 12. Next, the details of the corresponding failure and the time of occurrence are stored in the failure history storage section 23.

Note that if the control section 1 is provided with a failure factor analysis circuit for analyzing the causes of failure, the analyzed factors can also be displayed on the display section 4.

〔Effect of the invention〕

As described above, according to the present invention, since the failure history storage section is provided in the storage section in the numerical control device to store the failure history, it is possible to accurately know the failure history of the device or the controlled object. This has the effect of facilitating fault diagnosis.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of a numerical control device according to an embodiment of the present invention, and FIG. 2 is a block diagram showing the configuration of a conventional numerical control device. 1 is a control unit, 2 is a storage unit, 3 is a calculation unit, 4 is a display unit, 5
is a controlled object, 6 is an external control device, 11 is a failure diagnosis circuit,
12 is a fault content output circuit; 21 is a fault diagnosis function storage unit;
22 is a failure content display data storage section, and 23 is a failure history storage section. In addition, in the figures, the same reference numerals indicate the same or equivalent parts. Patent applicant Mitsubishi Electric Corporation Representative Patent attorney 1) Hiroshi Sawa (2 others)

Claims (1)

[Claims] Based on the signal input from the controlled object, the failure diagnosis circuit of the control unit determines whether there is a failure or not, and if a failure occurs, the failure diagnosis function storage unit of the storage unit performs failure diagnosis. In a numerical control device configured to retrieve failure display data from a failure content display data storage unit of the storage unit and display it on a display unit, a failure in which a history of failure occurrence time and failure content is stored in the storage unit. A numerical control device characterized by being provided with a history storage section.