JPH012105A - Machine interface 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] [Industrial Application Field] This invention connects a host computer system and a numerical control device (hereinafter referred to as an NC device), and transmits processed data from the host computer system to the NC device. The present invention relates to mechanical interface devices.

[Conventional technology]

A conventional mechanical interface device is shown in FIG. In the figure, (1) is the central processing unit that decodes instructions and executes them according to the program in the built-in memory, and (2) is the main memory that stores machining program data and other data, which cyclically stores machining program data. It functions as a ring buffer that temporarily stores data and sends it out cyclically. (3) is a BTR (behind tape reader interface circuit) that transmits machining program data as a paper tape image to the NC device (9).
4) is a host computer interface circuit that communicates data with the host computer system (7); and (9) is an NO device that controls a machine (not shown), such as a machining machine, in accordance with machining program data. The machine interface device (8) is composed of the components indicated by the above-mentioned symbols (11 to (4)).

Next, the operation will be explained.

An instruction to download machining program data is given to the machine interface device (8) from the host computer system (power) via the host computer interface circuit (4).

The machine interface device that received the download instruction (
8) sends a download disallowance response if downloading is not possible, and a download permission response if downloading is possible to the host computer system (7) via the host computer interface circuit (4).

When responding to download permission, the host computer system (
7) Machining program data is downloaded to the machine interface device (8) via the host computer interface circuit 4), and the machine interface device (8) that has received the machining program data
The received machining program data is stored in the buffer (2) indicated by the machining program data reception buffer pointer shown in the figure, and the reception buffer pointer is advanced to 1.
Prepare for the machining program data to be received next. When machining program data is subsequently received, the machining program data is buffered (2
) and returns this action.

However, if the reception buffer pointer is full to the buffer size of buffer (2), the reception buffer pointer is returned to the beginning of buffer (2) and reception of machining program data is continued.

When receiving machining program data from the host computer system (7) and attempting to store it in the buffer (2).

When machining program data has already been stored in all reception buffer pointers and has not yet been sent to the enclosure C device (9), the machining program data sent from the host computer system (7) is Buffer (2)
The central processing unit (1) of the first machine interface device (8) informs the host computer system (7) via the host computer interface circuit (4) that the buffer (2) is full. inform. When the same machining program data is sent again from the host computer system (7) to the machine interface device (8), it compares the receiving buffer pointer and the transmitting buffer pointer and determines the full state of the buffer (2) (buffer full). If status] continues, the full status of buffer (2) is notified in the same manner as described above, and if buffer (2) is empty, it is stored and the receiving buffer pointer is advanced.

On the other hand, at a timing unrelated to the above operation, the NO device (9
) to machine interface device (8) K to BTR
A PTR activation request is sent via the interface circuit (3). The machine interface device (8) that receives the PTR activation request checks whether there is data in the data buffer (2) of the machining program.

If there is no data, it waits for the next PTR activation request and performs the same operation without sending data. If there is data in the data buffer (2), the machining program data located at the sending buffer pointer is sent to the BTR interface circuit (3).
1 character is transmitted to the NO device (9) via , and the transmission buffer pointer is advanced. Further, if there is no data to be transmitted when a PTR activation request is received, the next PTR activation request is waited for without transmitting anything, as described above.

The machine interface device (8) receives machining program data from the host computer system (7) and
Every time a PTR activation request is received from the device (9), the control process described above is performed and the machining program data is sent to the NO device (9). Supply without division.

[Problem that the invention seeks to solve]

Since the conventional machine interface device is configured as described above, when the number of IJc devices connected to the host computer system via two machine interface devices increases, the load on the host computer system increases (and the load on the host computer system increases). Machining program data cannot be supplied in response to the PTR activation request.

There were problems such as processing being interrupted with the No. 1 machine.

This invention was made to solve the above-mentioned problems, and has the function of cyclically transmitting machining program data using a ring buffer and the function of storing machining program data as a file. These functions can be switched by instructions from the host computer system according to the performance of the machine and the execution speed of machining program data on the NC machine, and the PTR from the NC machine
An object of the present invention is to obtain a machine interface device that can supply machining program data without any trace in response to a startup request.

[Means for solving problems]

The machine interface device according to the present invention uses the main memory as a ring buffer, uses the auxiliary memory to manage files of machining program data, and effectively switches between the ring buffer and the auxiliary memory based on instructions from the host computer system.

The machining program from the host computer system is supplied to the NC device.

[Effect]

The machine interface device in this invention is:

N connected via a machine interface device.

Even if the number of devices increases, there will be no trace of PTR activation requests from NC devices (machining program data can be
Supply to C device.

[Embodiments of the invention]

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

FIG. 1 is a block diagram showing the entire structure of an embodiment of the present invention. In the figure, (1) is a central processing unit, (2) is a main memory that stores machining program data and other data, and (2) is a main memory that stores machining program data and other data.
3) is a BTR interface circuit, (4) is a host computer interface circuit, (7) is a host computer system, and (8) is a machine interface device.

(9) is an NC device, and shows the same elements as the conventional example, and the explanation thereof will be omitted. (5) is an auxiliary memory that stores machining program data as a file.

Next, the operation will be explained.

The procedure for supplying machining program data to the NC device via the ring buffer will be explained with reference to FIG.

Upper computer interface circuit (4) for upper computer system (7) and mechanical interface device (8)
An instruction to download machining program data is given via a ring buffer.

The machine interface device (8) that receives the download instruction (ring buffer) sends a download denial response if the download is not possible.

If the download is possible, a download permission response is sent to the host computer system (7) via the host computer interface circuit (4), and at the same time, the storage flag in the ring buffer is turned on.

Thereafter, machining program data is cyclically stored in the ring buffer as in the conventional example, and machining program data is also cyclically supplied from the ring buffer to the NC device.

Next, the procedure for storing the machining program data as a file in the auxiliary memo (January 5) and supplying the machining program data to the NC device will be explained with reference to FIG.

The host computer system (main computer interface circuit (4) for the machine interface device (8))
An instruction (file) to download machining program data is given via the .

The machine interface device (8) that receives the download instruction (file) returns a download denial response if the file is full and cannot be downloaded, and if the file is empty and can be loaded, it responds with a download permission response for all upper-level computer interface circuits. When the answer is sent to the host computer system (7) via (4), the storage flag in the button auxiliary memory is turned on.

When responding to download permission, the host computer system (
7) Machining program data is downloaded to the machine interface device (8) via the host computer interface circuit (4) and stored in the auxiliary memory (5) of the machine interface device (8), and an error is detected. (When the download is finished, the machining program data is registered as a file in the auxiliary memo (January 5)) and the machine interface device (8) sends the host computer interface circuit (4) to the host computer system (7). Report download completion via . If an error is detected and the data cannot be received normally, a download failure will be reported. The machining program data that has become necessary can be deleted by the machining program data deletion instruction. Further, different machining program data can be stored in the auxiliary memo (January 5) at the same time as machining program data is supplied to the NC device (9).

Next, when the machining start conditions are completed in the host computer system (7), a search instruction for machining program data is given via the computer interface circuit (4), and the specified machining program data is stored in the auxiliary memo (January 5). 1 Machine interface device (8) if stored in
A pointer is set to the first block of the machining program data, and the completion of the search is reported to the host computer system (7) via the host computer interface circuit (4).

When the NC device (9) enters the self@starting state, the No. device (9)
)Yo,! E for 7 machine machine interface device +8
1 machine interface device (8) since the PTR activation request is given via the TR interface circuit (3).
The central processing unit (1) transmits the machining program to the NC device (9) via the BTR interface circuit (3) character by character according to a preset pointer block, and advances the pointer by one.

Once again, when a PTR activation request is given from the NC device (9), the pointer block transmits υ1 character.

By repeating this operation, the machining work is completed.

The above depends on the performance of the connected NC device and the execution speed of the machining program data on the NC device.

The function of cyclically transmitting machining program data to a ring buffer and the function of storing machining program data as a file can be turned off in the host computer system! 7 Change.

〔Effect of the invention〕

As described above, according to this invention button, it has a main memory as a ring buffer function and an auxiliary memory as a file function, and is configured so that these functions can be switched according to instructions from the host computer system. ,
It is possible to give the machining program data from the host computer system to the No. machine without dividing it, and even when multiple NC devices are connected to the host computer system, it is possible to provide the processing program data to the No. This has the effect of providing a machine interface device that can provide machining program data without any trace and that can easily select these functions.

[Brief explanation of the drawing]

FIG. M1 is a block diagram according to an embodiment of the present invention. FIGS. 2 and 3 are operation explanations (2) showing an outline of the operation of the present invention, FIG. 4 is a block diagram showing the configuration of a conventional mechanical interface device, and FIG. 5 is an operation showing an outline of the conventional operation. FIG. 6 is an explanatory diagram showing the operation of the pointer of the ring buffer. In the figure, (I) is the central processing unit, (2) is the main memory (ring buffer), +31 is the BTR interface circuit, and (4) is the upper computer interface circuit. (5) is the auxiliary memo IJ, (71 is the upper computer system,
(8) is a mechanical interface device, and (9) is a numerical control device. In addition, in FIG. 9, the same reference numerals indicate the same or equivalent parts.

Claims (1)

[Claims] It has a main memory and an auxiliary memory for storing machining program data, stores the machining program data downloaded from the host computer system in the main memory or the auxiliary memory, and sends the stored machining program data to the request of the numerical control device. In a machine interface device that transfers data to the numerical control device according to a signal, the main memory is configured with a ring buffer, and machining program data downloaded by the host computer system is cyclically transferred to the ring buffer without being divided. a function of being able to cyclically transmit machining program data stored in the ring buffer from the ring buffer to the numerical control device, and a machining program downloaded to the auxiliary memory from the host computer system; A machine interface device having a function of storing the information as a file and transmitting it to the numerical control device, and being able to switch these functions based on an instruction from the host computer system.