JPS61237106A - Data transfer system for numerical controller - Google Patents

Abstract

PURPOSE:To execute freely a data transfer operation by one worker, by constituting the title system so that the other device is set to a prescribed mode, when a prescribed signal is generated from one device of an automatic programming generating device or a numerical controller. CONSTITUTION:When a prescribed instruction signal is generated to a transmis sion line 3 from one of an automatic programming generating device 1 a numeri cal controller 2, for instance, the device 1, an interruption is applied to a CPU 4' by the device 2. The CPU 4' decodes and discriminates the received instruc tion signal and sets the device 2 to a receiving mode (a transfer mode in case of reverse). Thereafter, a data transfer is executed between the device 1 and the device 2, and in the device 2, one group of data which has been received is described in a RAM 6', and also a data of a working program is transferred successively. When the transfer is ended, the system is prepared for the next data transfer, and becomes a holding state.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a numerical control device for a machine tool, and in particular to an I! This article relates to a data transmission method between I-1/I-1/→Mail Rege Aka Koson Station and 1 Network Voucher.

[Conventional technology]

A normal numerical control device (NC device) uses a tape league to perform numerical control by sequentially reading NC data punched on a paper tape. With this method, it is necessary to store and manage a large number of paper tapes on which NOK Niprograms are punched.
In addition, it was difficult to correct the Canadian program because it required re-tapping a new piece of paper tape. Furthermore, since the tape puncher operates mechanically, there is a problem in that punching errors or reading errors occur with a non-negligible frequency. For this reason, by connecting the NC device and an automatic programming creation device that has a computer with a cable, the computer program created by the automatic programming creation device can be printed directly onto a paper tape, etc.
A method is used in which the information is transferred to the C device, temporarily stored in the memory in the NO device, and read out sequentially for use. In this method,
This is preferable because the programming can be done using an automatic program creation device placed in an office in a quiet environment, and the created cannibal program can be transferred and used in the factory.

In order to reduce programming man-hours, instead of creating a complete machining program from the beginning, you can change the machining origin, add auxiliary function commands, and adjust the feed rate while looking at the machining situation at the factory. It is desirable to make slight modifications such as changes to create a sophisticated Canadian program.Also, the office may want to obtain management information such as the operating status of the NC@ equipment. It is desirable to be able to exchange data between the computer and the automatic programming creation device, and to be able to freely perform data transfer operations from either side.

In the conventional data transfer method, in order to transfer data between the NC device and the automatic programming creation device, the operator first switches the automatic programming device to a mode that allows data exchange, and then presses the key on the NC device side using ν1. operations and data transfer processes had to be performed. For this reason, it is necessary for the operator of the automatic programming device in the office and the operator of the NC device in the factory to communicate over the telephone, which is very troublesome.

[Problems that the invention aims to solve]

The present invention has been made to solve the above-mentioned problems, and includes NC! Ir! An object of the present invention is to provide a data transfer method for a numerical control device that allows a single operator to freely perform data transfer operations from both sides of the computer and an automatic programming creation device.

[Means for solving problems]

Therefore, according to the present invention, an automatic programming device having a computer and a numerical control device having a computer are connected by a transmission line, and both of the connected devices can be controlled by an external interrupt by a signal from the transmission line. When a predetermined signal is emitted from one of the devices to the transmission line, the other device is kept on standby in a possible state. If! ! A data transfer method for a numerical control device is provided in which the predetermined signal is determined by an interrupt process caused by the signal, and the device is set to a data transmission mode or a data reception mode, and data is transferred and stored using the lever of the device.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a data transfer method for a numerical control device according to the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing the overall configuration of the embodiment, and FIG. 2 is a perspective view showing the external appearance. In this embodiment, a wire electrical discharge machine is assumed as the target machine tool.

Automatic programming creation device located in the office 1
and an NC device 2 of a wire electric discharge machine placed at the factory site are connected by a transmission line 3.

The automatic programming device 1 has a computer consisting of a central processing unit 4, a read-only memory 5, a large storage memory 6, etc., and a common bus 7 thereof has an interface 8, respectively.
．． 9.10.11, a disk memory 12 for storing a large number of created NC Kanji programs, a keyboard 13 equipped with alphabetic keys and numeric keys, a graphic display device 14 for displaying figures and characters, and a created Kanji program. The graphic display device 14 to which a tape punch 15 or magnetic tape 16 for outputting to soft tape or the like is connected includes a cathode ray type display (CRT) 17 and its control circuit 18.
, graphic memory 19, character generator 20
and a refresh memory 21. The graphic memory 19 stores all II elements of one screen of the display 17. The character generator 20 consists of a continuous memory, in which character shapes are stored, and a +77 reflex memory 21.
has a storage area corresponding to the number of characters that can be displayed on one screen of the display 17, and has rows and columns that can display characters on the display 17 (for example, 25 rows x 80 columns).
Store the character information that you want to display at the address corresponding to each. The control circuit 18 stores data from the central processing unit 4 in a graphic memory 19 and a retrieval memory 21, and sends a video signal from pixel data from the graphic memory 19 and character generator 20 to the display 17 to display figures and characters. do.

An input/output ink 7ace 22 connected to the transmission line 3 and used to exchange data with the NC3ii12 is connected to the common path 7. *Input/output ink 7 21st 22
is also connected to an interrupt line 23 to the central processing unit 4, and when receiving a signal from the transmission line 3, issues an interrupt signal to request interrupt processing.

Like the automatic programming device 1, the NC device 2 has a computer consisting of a central processing unit 4', a read-only memo 175', a temporary memory 6', etc., and a keyboard 13'.
A graphic display device 1 comprising a display 17' etc.
4'. Furthermore, pulse distributors 24, 25, servo circuits 26, 27, and feed 9 motors 28, 29 are connected to drive and control the X and Y wheels of the electrical discharge machine, and output auxiliary function (MST) commands. A high-power circuit 30 is connected via an interface 31.

An input/output ink 7 ace 22' connected to the transmission line 3 and used to exchange data with the automatic programming creation device 1 is connected to the common path 7', and an interrupt line 23 to the central processing unit 4' is connected to the common path 7'. ' is also connected to the input/output ink 7 ace 2 connected to the transmission line 3 connecting the NC@li [2 and the automatic programming creation device 1].
2' and 22 are constructed according to standard R8232C.

The operation will be explained.

When data is not transferred, the automatic programming device 1 and the NC device 2 operate independently and execute their respective processes individually.

When data is transferred, one of the devices issues a predetermined command signal to the transmission line 3. For example, when a predetermined command signal is sent to the transmission line 3 by the ink 7 ace 22 from the automatic program 2 misog production device 1, the interface 22' of the NC device 2 receives the command signal and interrupts the received command signal as it is. It sends it to line 23' and interrupts central processing unit 4'. The central processing unit 4' starts interrupt processing by the first bit signal of the command signal, masks the interrupt line 23', reads the received command signal from the common path 7', decodes it, and sends it to the NC device. 2 is the transfer mode or reception mode. Then, data transfer is performed between the automatic programming creation device 1 and the NC device 2, and when the forwarding is completed, the mask on the interrupt line 23' is removed and the system waits in preparation for the next data transfer.

When receiving a command signal, if NC41-2 is in a state where data transfer is not possible due to editing of the relevant NO program, etc., it will not accept the command signal and will output an in-operation signal (B U
S Y signal) is sent to the transmission line 3 to notify the automatic programming creation device 1. In the automatic programming creation device 1, “MACHINE BUS” appears on the display 17.
Inform the operator by displaying YJ.

Figures 3 and 4 show NC1! FIG. 2 is an explanatory diagram chronologically showing how command signals and data are exchanged between the device 2 and the automatic programming creation device 1. FIG. Figure 3 is NC! Figure 4 shows the case where IC device 2 is used as the device and automatic programming is done. Indicates the case where is the master station and NO!I@2 is the slave station, and
In both Figure 3 and Figure 4, (a) shows the so-called grand load case in which data is sent from the automatic programming creation device 1 to the NC device 2, and (b) shows the case where data is transferred from the automatic programming creation device 1 to the NC device 2. Afbroud (Up) transfers data from to the automatic programming creation device 1
Load).

First, the case of FIG. 3(a) in which grand loading is performed by operation only from the NC device 2 side will be explained.

Download from keyboard 13' of NC device 2
Enter the command and then specify the name of the program to be transferred. In response to this keyboard operation, the NC device 2 outputs a command signal MSG $ (D, program name) to the transmission line 3 instructing download transfer.

In the automatic programming creation device 1, the command signal MSG$
An interrupt is generated by the rise of the first signal of , and the input from the transmission line 3 is accepted through interrupt processing, and the interrupt line 23 is masked so that no interrupts due to subsequent input signals will be accepted. Then, it decodes the input command signal to set the data transfer mode, and outputs the confirmation signal ACK$ to the transmission line 3. If the specified program name does not exist, a non-confirmation signal NAK$ is outputted to notify the NC device r112, and the interrupt line 23 is unmasked to return to the standby state.

Upon receiving the confirmation signal ACK$, NC@fl12 enters data reception mode and waits for data transfer.

In the automatic program creation device 1, after a predetermined period of time after sending the confirmation signal ACK$, a group of data DA of the program program is generated.
Send TA$. The NC device 2 stores a group of received data in the memory 6', and also performs a parity check and a summation check (CH
ECK, SUM), etc. are detected, and if there is no error, a confirmation signal ACK$ is sent back to the automatic program creation device 1. Then, the transfer of the next group of data DATA$ and the return of the confirmation signal ACK$ are repeated to sequentially transfer the data of the Kaniprogram. When all the data has been transferred, the automatic program creation i device 1 sends a data end signal EOD$, and the NC device! ! 2 receives the data end signal EOD$ and returns an acknowledgment signal ACK$. This completes the data transfer process, and interrupts both the device 1.2 and the interrupt line 23.2.
Release the mask 3' and return to the standby state.

If an error is detected by error detection such as summation check, a non-confirmation signal NAK$ is output instead of the confirmation signal ACK$. If a non-confirmation signal NAK$ is returned while waiting for a confirmation signal ACK$, the interruption process (
ABORT processing) is entered, and a message to that effect is displayed on display 17.
．． 17°, the interrupt lines 23 and 23' are unmasked, and the state returns to the standby state.

Next, the data is uploaded to the automatic program creation device 1 by operation only from NC@fl12@ (Fig. 3).
Case b) will be explained.

An UpLoad command is input from the keyboard 13' of the NC device 2, and then the name of the program to be transferred is input.

By this operation, the NC device 2 outputs a command signal MSG$ (tJ, program name) to the transmission line 3 instructing uploading. In the automatic programming creation device 1,
By interrupt processing caused by this command signal, the command signal is decoded, the data reception mode is set, and the confirmation signal ACK$ is output to the transmission line 3. Thereafter, as in the case of the grand load described above, the transfer of a group of data DATA$ and the return of the confirmation signal ACK$ are repeated to transfer all the Kniprograms. After i&, sends a data end signal EOD$,
A confirmation signal ACK$ is returned, the Our Broad data transfer process is completed, and the devices 1 and 2 return to the standby state again.

Even when operating from the automatic programming creation device 1 side shown in Fig. 4, the main station is the automatic programming creation device 1 and the slave station is the NC device 2, and the operation and processing are the same as in the case of Fig. 3 described above. It is executed by interrupt processing.

As described above, data can be freely transferred between the automatic programming creating device 1 or NC@C2O4 by operating only one of the devices i and 2. For this reason, some programming is performed in the office using an automatic programming creating device 1, and the generated cannibal program is transferred to the NC device 2 in the factory. On the other hand, at the factory site, the cannibal program is slightly modified while observing the actual machining situation and used as a refined cannibal program, and the resulting cannibal program is transferred to the automatic programming creation device 1 and stored in the disk memory 12 as 7 files. A single worker can now do things like save and save.

In the above embodiment, the transfer data is explained as a machine program, but even if the transfer data is factory management information such as operation status data of the NC device, data can be freely exchanged in the same way.

Also, to simplify the explanation, the system has been explained in which one NC device is connected to one automatic programming creation device, but in the method of the present invention, multiple NC devices are connected to one automatic programming creation device. It is also possible to connect and exchange data with each other, which is also desirable from the standpoint of cost reduction. *It is also possible to exchange data with each other by connecting a plurality of NC devices and a plurality of automatic programming creation devices and including the designation of the destination station for data transfer in the command.

〔Effect of the invention〕

As explained above, according to the present invention, in the darkness between an automatic programming device placed in an office and an NC device placed at a factory site, a worker 1 from either device
This has the excellent effect of allowing data to be freely transferred between the same devices through human intervention.

[Brief explanation of the drawing]

The drawing shows an embodiment of the data transfer method according to the present invention,
FIG. 1 is a block diagram showing the configuration, FIG. 2 is a perspective view showing the external appearance, and FIGS. 3 and 4 are explanatory diagrams showing the exchange of data etc. in chronological order. DESCRIPTION OF SYMBOLS 1... Automatic programming creation device, 2... NC device, 3... Transmission line, 4.4'... Central processing unit (CPU), 5.5', 6.6'... memory, 1
2... Disk memory, 13.13'... Keyboard, 17.17'... Display, 22.22'.
...I/O interface 7 ace, 23.23'...Interrupt line. 317th (a) (b) 412th

Claims (1)

[Claims] An automatic programming device with a computer and a numerical control device with a computer are connected via a transmission line, and both connected devices are kept on standby in a state where external interrupts can be made by signals from the transmission line. When a predetermined signal is emitted from one of the devices to the transmission line, the other device determines the predetermined signal by interrupt processing caused by that signal and enters data transmission mode or data reception mode, and the communication between the two devices is performed. A data transfer method for numerical control equipment that transfers and stores data.