JPH02226307A - Numerical controller - Google Patents

Abstract

PURPOSE:To quickly clear up the cause of abnormality of a machine by storing control information of the machine and operation results of a programmable controller in a storage means and displaying stored contents at the time of input of an instruction. CONSTITUTION:A processor 1 successively reads out a programmable controller (PC) program 5 and reads out the state signal of the machine written in a memory 4 and performs prescribed operation. The processor 1 discriminates whether the machine is abnormal or not at the time of executing the PC program 5, and the processor 1 starts a PC data storage control part 10 when the machine is abnormal. The PC data storage control part 10 copies stored contents of the memory 4 to a memory 11. When an operator inputs an instruction to display stored contents of the memory 11, a PC data display control part 12 displays them on a CRT 2. Thus, the cause of abnormality of the machine is quickly cleared up.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a numerical control device (hereinafter referred to as CNC),
More specifically, the present invention relates to a numerical control device that collects and displays information on abnormal conditions that occur during machine control by the numerical control device.

[Prior Art] FIG. 5 is a configuration diagram of a conventional programmable controller (hereinafter referred to as PC) built into a CNC. In FIG. 5, (1) is a processor that controls the CNC, (2)
is a CRT that displays the CNC status, (3) is a keyboard, (4) is a memory that stores programs for the PC,
(5) is a memory that stores programs for the PC created by the user; (6) is a machine signal input/output device that is an interface for inputting and outputting signals from outside the CNC;
(7) is a PC data display device, (8) is another peripheral device,
(9) is the machine's powerful electrical panel.

Next, the operation of the conventional CNC will be explained.

The machine signal input/output device (6) constantly receives machine status signals from the machine's power panel (9).

A processor (1) reads machine status signals from a machine signal input/output device (6) and writes them into a memory (4).

Next, the processor (1) sequentially reads user-created PC programs from the memory (5), and
The machine status signal written in 4) is read out and arithmetic is performed, and the result of the arithmetic operation is written in the memory (4).

Further, the processor (1) outputs the calculation results written in the memory (4) to the mechanical signal input/output device (6) or other peripheral device (8). The machine signal input/output device (6) outputs the input signal to the power board (9) to control the machine. Further, other peripheral devices (8) control each function based on signals received from the processor (1).

In addition, when the operator wants to view the results calculated by the processor (1) based on the machine status signals written in the memory (4) and the PC program stored in the memory (5), the operator presses the keyboard (3). Operate to input a specific signal.

When the processor (1) determines that a specific signal has been input, the processor (1)
The data display control section (7) is started to display the contents of the memory (4) on the CRT (2). Figure 6 shows CRT
It is a figure which shows the example of a display of (2). In Figure 6, (1
3) is the A contact in the OFF state, (14) is the coil in the OFF state, (15) is the A contact in the ON state, and (16) is the coil in the ON state.

[Problems to be Solved by the Invention] By the way, in the conventional CNC with the above configuration, when an abnormality occurs in the machine, the operator transfers the PC data at that time to the CRT (
Even if displayed in 2), since the PC data is constantly rewritten, the data at the time of the abnormality is not saved, so there is a problem that it takes time to find out the cause of the abnormality in the machine.

The present invention has been made to solve the above problems,
It is an object of the present invention to provide a numerical control device capable of storing PC data when an abnormality occurs in a machine and displaying the PC data.

[Means for Solving the Problems] A numerical control device according to the present invention includes a storage means for storing at least control information of a machine controlled by the numerical control device and calculation results of a programmable controller, and an external signal indicating an abnormality of the machine. When the external signal is input, the storage control means stores the control information of the machine and the calculation result of the programmable controller in the storage means when the external signal is input; A command input means for inputting a command to display the stored contents, and a display control means for displaying the stored contents of the storage means when an external signal is input when the command to display the stored contents is inputted. There is.

[Function] The numerical control device with the above configuration, when an external signal is input,
The storage control means stores control information of the machine and calculation results of the programmable controller in the storage means.

At this time, when a command to display the stored contents of the storage means at the time when the external signal was inputted by the command input means is input, the display control means displays the stored contents of the storage means at the time when the external signal was inputted. do.

[Example] Hereinafter, an example of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram of a numerical control device according to an embodiment of the present invention. Note that in FIG. 1, parts that perform the same functions as those in FIG. 5 are designated by the same reference numerals, and the explanation thereof will be omitted.

In FIG. 1, (10) is a PC data storage control unit, (11) is a memory into which the PC data storage control unit (lO) writes PC data, and (12) is a PC data stored in the memory (11). This is PC memory data 2 display control to display on CRT (2).

Next, the operation of the numerical control device shown in FIG. 1 will be explained with reference to the flowcharts in FIGS. 2, 3, and 4. In addition, FIG. 2 is a flowchart showing the processing of the PC program stored in the memory (5), FIG. 3 is a flowchart showing the processing of the PC data storage control unit (10), and FIG. 4 is a flowchart showing the processing of the PC data storage controller (10). It is a flowchart which shows the process of control (12).

(1) Steps 81 to S2 The processor (1) reads the machine status signal from the machine signal input/output device (6) and writes it into the memory (4) (Step Sl).

The processor (1) sequentially reads the PC program (5), reads the machine status signal written in the memory (4), and performs a predetermined calculation (step S).
2).

(2) Steps 83 to S4.87 to SIO processor (
1) determines whether the machine is abnormal when executing the PC program (5) (step S3).

This determination is made by creating a PC program so that when the processor (1) has a signal written in the memory (4), it determines that the machine is abnormal.

If the machine is abnormal, the processor (1) activates the PC data storage controller (10) (step 84). P
When the C data storage control unit (10) is activated (step S7), the C data storage control unit (10) stores the stored contents of the memory (4) in the memory (
11) (step S8).

When the operator performs a predetermined operation on the keyboard (3) and inputs a command to display the stored contents of the memory (11), the processor (1) causes the PC data display control unit (12
) outputs the display request.

When the PC data display control unit (12) receives a display request from the processor (1) (step S7), it reads the PC data from the memory (11) at the time when an abnormality occurred in the machine, and displays the data as shown in FIG. Format CRT (
2).

(3) Steps 85 to S6 When the processor (1) performs calculations to the end of the PC program (5) (step S5), the processor (1) sends the calculation results to the mechanical signal input/output device (6) or other peripheral devices (8). output,
The machine is controlled (step 8B).

[Effects of the Invention] As explained above, according to the present invention, when an external signal is input, the storage control means stores machine control information and the calculation results of the programmable controller in the storage means, and inputs a command. When the means inputs a command to display the stored contents of the storage means at the time when the external signal was inputted, the display control means displays the stored contents of the storage means at the time when the external signal was inputted. When an abnormality occurs in a machine, the cause can be investigated and the machine can be quickly restored, resulting in a numerical control device that significantly improves the operating rate of the machine.

[Brief explanation of the drawing]

FIG. 1 is a block configuration diagram of a numerical control device according to an embodiment of the present invention, FIGS. 2, 3, and 4 are flow charts showing the operation of the numerical control device shown in FIG. 1, and FIG. 6 is a block diagram of a conventional numerical control device, and FIG. 6 is a diagram showing an example of displaying PC data. In each figure, 1 is a processor, 2 is a CRT, 3 is a keyboard, 4.5.11 is a memory, 6 is a mechanical signal input/output device, and 7
8 is a PC data display control unit, 8 is another peripheral device, 9 is a power board, IO is a PC data storage control unit, and 12 is a PCC storage data 2 display control. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (1)

[Claims] A storage means for storing at least control information of a machine controlled by a numerical control device and calculation results of a programmable controller, and when an external signal indicating an abnormality of the machine is input, when the external signal is input;
storage control means for storing control information of the machine and calculation results of the programmable controller in the storage means; and command input means for inputting a command to display the stored contents of the storage means when the external signal is input. and, when a command to display the stored content is input, display control means for displaying the stored content of the storage means when the external signal is input.