JPS5913109B2 - Data storage method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a data storage system, which includes a numerical control device in a load, a cassette memory, and a data storage system provided between the numerical control device and the cassette memory for writing data to the cassette memory and storing the data in the cassette. The present invention relates to a method for storing data in the cassette memory in a numerical control system having a memory control device that controls reading of data from the memory.

Conventionally, in a numerical control device having a built-in memory for storing a part program, paper tape 20 is used as a storage medium for writing the part program into the built-in memory and for storing information stored in the built-in memory. Data was transferred from the paper tape to the built-in memory and from the built-in memory to the paper tape using a paper tape reader and a paper tape punch connected to a numerical control device.

In this way, the F5 system using paper tape as a storage medium does not necessarily have advantages in terms of the lifespan of the paper tape, the reliability of machine tool control in adverse environments, ease of handling, and the price of the paper tape reader and punch. It wasn't satisfying.

Recently, 30-bubble cassette memories, semiconductor cassette memories, and the like have become available as storage media in place of paper tapes, and numerical control systems using these cassette memories as storage media have been proposed and put into practical use.

However, in conventional systems that use cassette memory as a storage medium, flexible controls such as search and read control of the first block of the ram and control of deletion of machining programs are easily performed. In addition, it was not possible to use the memory effectively.

Therefore, an object of the present invention is to provide a new data storage method that allows easy searching and reading of arbitrary machining programs. The data for one unit of human power (for example, one machining program data) is set as one file, and the file is divided into a plurality of programs each consisting of a predetermined number of bytes, and a control byte is inserted at the beginning of each program to store the data in the force set memory. At the same time, write information indicating whether the control byte belongs to the first proc of the file, the middle proc of the file, the last proc of the file, etc., to the perpendicular byte. This is achieved by

Embodiments of the present invention will be described in detail below with reference to the drawings.
FIG. 1 is an explanatory diagram illustrating an information read operation of a magnetic bubble memory having a Teisher-minor-loop configuration.

In Fig. 1, Ml, m2, m3, . For example, it is a continuous loop of a T-bar pattern.

BG is a bubble generator, BE is a bubble absorber, MLR is a read-only tie-sher line, and MLW is a write-only tie-sher line. Each minor loop Ml, m2・
...One end of MN is Teisher Line MLR,M
The minor loops Ml, m2, which were in contact with the read-only Teisher line MLR at that time, were in contact with the read-only Teisher line MLR by the transfer command from the transfer TFR, respectively. (black circle inside) is transferred into the read-only Taisher line MLR. Also, according to the transfer command from the transfer TFW, the write-only Taisher line MLW
The bubble domain (black circle in the figure) written in
It is transferred during the loop ml・M2゛゜゛゜゜゛MN. Next, read processing will be explained. When reading stored information in one access unit consisting of N bits, first, the bubble domains in N minor loops M,, m2...MN are read-only Teisher lines by a transfer command in parallel. Transferred by MLR.

In the magnetic bubble memory shown in FIG. 1, the storage information in units of l access means each minor one loop Mi (1=1.
2,...N) is stored in b(1,1), b(1,2)...b(1
, 2M-1), b (1, 2M) then {b (1, j)
,b(2,j)...b(N,j)}However, j=
It refers to N-bit information consisting of 1, 2...2M.

The bubble domain transferred to the read-only tie-sher line MLR is then sequentially shifted one bit at a time in the tie-sher line MLR and output serially.

Therefore, if a magnetoresistive bubble detector BD, for example, is provided at the exit of the read-only Taisher line MLR, the presence or absence of bubbles is detected by the detector BD and read out. In addition, in this reading, there are destructive reading in which the bubble domain of one access unit in the MN disappears, and non-destructive reading in which the bubble domain does not disappear. In this case, since non-destructive reading is performed, stored information is read from the read-only major line MLR, and data is written from the write-only major line MLW.

Then, the bubble domain is shifted in the direction of the arrow in each minor loop Mi, and is read when the information of one predetermined access unit reaches the read-only tie line MLR or the write-only major line MLR, Or written. Therefore, when reading data from the magnetic bubble memory, it is necessary to cue the data to a position where it contacts the MLR, and when writing data, it is necessary to cue the data so that it makes contact with the MLW.

FIG. 2 is a block diagram of a memory control device for realizing the data storage system according to the present invention, and FIG. 3 is an explanatory diagram illustrating the data structure.

In FIG. 2, 11 is a numerical control device, 12 is a force set memory made of, for example, a magnetic bubble memory, and 13 is a memory control device, which writes data to the force set memory 12 and reads data from the force set memory, and performs numerical control. Controls data transfer between device 11 and force set memory 12.

14 is a buffer memory.

A series of l input/output units (referred to as one file) of machining data, such as a machining program, continuously output from the numerical control device 11 is temporarily stored. In addition, the processing data of one file is MDi (1=I, 2...
As shown in ), it consists of a start byte, a number of machining program bytes, and an end byte. 1
7 is a byte counter with a capacity (l-1), which counts up the processed data sent from the numerical control device 11 for each byte, and also outputs a signal ZR (=゛bi) when the content is not zero. Output.

18 is a counter that counts overflow pulses 0VF1 generated from the byte counter 17, and ZR=゛O
When , the count value N indicates the number of procs in the file l, which will be described later, and when ZR=''F', (N+1) is 1.
Indicates the number of procs in the file.

19 is a control byte generation circuit, which inserts a 1-byte control byte CB (Fig. 3) at the beginning of each block when one file of processed data 01 is divided into a large number of blocks of (l-1) bytes each. Then, it is recorded in the force set memory 12.

Note that this control byte CB is b1 to B as shown in FIG.
It is composed of 8 bits. Then, the control byte (8th bit B) of the first block BH of the l file is
8) "B1" is stored in the final block BEO leg bite (5th bit B5), and "1" is stored in the intermediate block B1 (7) 11b 1 leg bite (7th bit B7). In addition, a large number of files Fi (11, 2, ...) are stored in the force set memory 12, but after the last file Fn, there is a data end program D.
EB is written, and EB is written to the first bit b1 of the control byte CB of the data end block. That is, if a certain program is the first block of one file, the 8th bit B8 of the control byte has a bit, if it is the last block of one file, the fifth bit B5 has 6bits, and if it is the middle block of one file, the 6th bit is written. 7 bit B7 (If there is a crack or a data end block, 8 bits are written to the first bit B1 and stored in the power set memory 12. 20 is a decoder, and the data read from the buffer memory 14 is If it is the start data START, it will generate the data start signal ST (=゛bi), if it is the end data END, it will generate the data end signal ED (=゛l), and if it is the end data END, it will generate the data end signal ST (=゛bi). At each time, a processed data signal MDS (=1 bit) is output.

21 is a 1-byte register, 22 and 23 are AND gates, and 24 is a synthesis circuit that synthesizes processed data and control data and outputs the result.

25 is the capacity! 1 from the synthesis circuit 24 with the byte counter of
The count increases by 1 each time byte data is output.

26 is a counter that counts overflow pulses 0VF2 generated from the byte counter 25 and indicates the number of blocks for one file. 27 is a byte counter with a capacity of 1, which counts the data read from the force set memo I river 12 for each byte. However, when the content is non-zero, 6F is output.

28 is a comparison circuit.

Next, the operation of the present invention will be explained.

It is assumed that the total number of processes for one file is (N+1) and that the signal line ZR1 is 1.
The case where the data is stored in 2 will be explained.

Now, when the processed data MDl is sequentially output one byte at a time from the line Lll, the processed data is stored in the buffer memory I river 4 under the control of the write control circuit 15.

In parallel with this, the byte counter 17 increments by 1 each time one byte of processed data (excluding start data and end data) is output to line Lll, and (l-1
) Outputs overflow pulse 0VF1 upon generation of cutting data. Further, the counter 18 counts this overflow pulse 0VF1 and indicates the number of blocks for one file. That is, when the content of the byte counter 17 at the time when the end byte occurs is zero (US ZR20'), the count value N of the counter 18 is the total number of blocks for one file, and when the end byte is US ZR-6 bit, it is (N+1). ) is l
This is the total number of processes in the file. All the processed data of the file is stored in the buffer memory 14. Thereafter, the processed data is sequentially read one byte at a time from the buffer register 14 under the control of the read control circuit 16, stored in the register 21, and simultaneously input to the decoder 20. Now, since the first data is the start data START, the decoder 2
0 outputs the data start signal ST (=゛bi), but the processed data signal MDS1 and data end signal ED are 601. Therefore, the AND gate 22 is closed and the start data is not output to the synthesis circuit 24. On the other hand, since the data start signal ST is "1", the control byte generation circuit 19 generates control data in which "F" is embedded in the 8th bit, and outputs the control data via the synthesis circuit 24 and the line L2l. Enter the set memory 1 and write it into the set memory. Now, since the data after the start data START is processed data, from then on the decoder 20 outputs the processed data signal MDS (-"B) until the end data END is output.
Output. As a result, (1-1) bytes of processed data are stored in the force set memory 12 via the AND gate 22, the synthesis circuit 24, and the line L2 (writing of the first block BH). Incidentally, each time one byte of data is output from the synthesis circuit 24, the byte counter 25 counts up by one.

Therefore, when 1 byte of control data and (1-1) bytes of processed data are output from the synthesis circuit 24, in other words, when 1 byte (1 block) of data is output from the synthesis circuit 24, the An overflow pulse 0VF2 is generated from the counter 25. As a result, the counter 26 counts up by l, and the read control circuit 16 temporarily stops reading data from the buffer memo January 4. On the other hand, due to the generation of the overflow pulse 0VF2, the control byte generation circuit 19 outputs control data in which "B" is written in the seventh bit B7, and the synthesis circuit 24 outputs control data on the line L2l.
It is written into the force set memory 12 via the power set memory 12. Then, the read control circuit 16 again reads (l-1) bytes of processed data from the buffer memory 14 and stores it in the force set memory 12 via the AND gate 22, the synthesis circuit 24, and the line L2l (writing of the second block). Thereafter, similarly (l-1)
Control data consisting of 6 bits written in the 7th bit for each byte of processed data is inserted and written into the sword set memory 12. Then, the count value of the counter 26 becomes N at the time when the block immediately before the final block BE of the file I is written into the force set memory 12.

It is assumed that the total number of blocks is (N+1) and the content of the byte counter 17 is non-zero (US ZR=6 bits), so the count value of the counter 18 is also N. Therefore, at the time when the program immediately before the final program BE is written into the force set memory 12, the contents of the counters 18 and 26 both become N, and the comparison circuit outputs a match signal LBL (=6 bits). As a result, the control byte generation circuit 19
Control data is generated by writing "1" to bit B, and is sent to the force set memory 12 via the synthesis circuit 24 and the line L2l.
to be memorized. Then, the processed data of the final process BE is stored in the force set memory 12 via the AND gate 22, the synthesis circuit 24, and the line L2l. Then, when the end data END is read from the buffer memory 14, the decoder 20 outputs the end data signal ED (=1). The generation of the end data signal ED closes the AND gate 22, and the control byte generation circuit 19 generates a 1-byte control data by writing the first bit BliC pin, and stores it in the force set memory 12. (Write data end block DEB). As described above, one file of processed data is divided into blocks, and one byte of control data is inserted at the beginning of each block and stored in the cassette memory 712.

Also, after the latest file is the data end block D.
EB is written. When writing the next file to the force set memory 12, the next file is stored from the position where the data end block is stored, and then the data end block is stored. Next, a case will be described in which the processed data of file I is read out from the force set memory 12 and sent to the numerical control device.

Since the contents of the byte counter 27 with initial capacity l have been cleared to zero, the AND gate 23 is closed.

Now, 1 file of processing data is 1 byte of control data from force set memory 1 river 2 via line L22, (2-1)
Byte processing data, 1 byte control data, (l-1
) Processed data of bytes are read out in the order of...

Therefore, when reading the control data, the contents of the byte counter 27 are zero, so the AND gate 23 is closed and the control data is not output to the numerical control device 11. On the other hand, when reading (l-1) bytes of processed data, the contents of the byte counter 27 are 1 to (2-1).
, the AND gate 23 is open, and the processed data is output to the numerical control device 11. To summarize the above, the data read from the force set memory 12 is sent to the numerical system with control data removed.
Although the above explanation assumes that all data (including control data) constituting the file is read when reading data, it is also possible to give a command to a transfer (TFR) (not shown) and read control data. You can also choose not to do it. In this case, byte counter 2
7. AND gate 23 can be removed. that's all,
According to the present invention, one input/output unit (one file) of processing data is divided into a plurality of blocks in the force set memory, a control byte is inserted at the beginning of each block, and each control byte is transferred from the first block to the final block. Since the information that distinguishes intermediate programs is written, it is possible to easily locate (search) a desired file.

For example, by simply instructing the first file from the numerical control device, the first file can be located as desired by counting the first block from the beginning and reaching l. Since the control data is automatically removed when data is transferred to the numerical control device, the numerical control device can perform normal input/output without being aware of the input/output to the force set memory. Data can be input and output in the same way as devices.

In addition, since 1 byte of control data is added to each program, by inputting predetermined control information into the control byte, various extremely detailed controls such as the above-mentioned file cue can be performed. be able to.

Furthermore, since a data end block is added after the last file, when writing a new file, you can easily find the writing position of the new file by searching for the data end block. Memory can be used effectively because data can be stored consecutively without any blank space in between.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram illustrating the information read operation of a magnetic bubble memory having a Taisher-minor-loop configuration, FIG. 2 is a block diagram of a memory control device for realizing the data write system according to the present invention, and FIG. FIG. 3 is an explanatory diagram illustrating a data storage method according to the present invention. 11... Numerical control device, 12... Force set memory, 13... Memory control device, 14.
...Batsufuamemo 18 17, 25, 27...
...Byte counter, 18, 26... Counter, 19... System byte generation circuit, 20...
... Decoder, 24 ... Synthesis circuit, 28.
...Comparison circuit.

Claims (1)

[Scope of Claims] 1. A numerical control device, a cassette memory, and a device provided between the numerical control device and the cassette memory to control writing of numerical control data to the cassette memory and reading of numerical control data from the cassette memory. In the data storage method comprising a memory control device, the memory control device divides the numerical control data to be stored in the cassette memory from the numerical control device into a plurality of blocks each consisting of a predetermined number of bytes, and It is characterized by having means for inserting a control byte into the block, and means for removing the control byte inserted at the beginning of each block when reading the numerical control data stored in the cassette memory and transferring it to the numerical control device. data storage method. 2 Write control information in the control byte indicating whether the block to which the control byte belongs is the first block of numerical control data of a predetermined length, an intermediate block, or the last block, and 2. The data storage system according to claim 1, wherein the data is stored in a cassette memory. 3. The data storage system according to claim 1, wherein the cassette memory is a magnetic bubble memory.