JPS60117302A - Data transmitter for numerical controller - Google Patents

Abstract

PURPOSE:To obtain a data transmitter which can cope with an unmanned operation for a long period of time or the fetching number of units of works, by editing a transmission sentence simultaneously with conversion of a memory language into an NC language through a transmission part within a CPU of a host computer. CONSTITUTION:A main program 21a is stored to a main program exclusive area 21 of an external memory 2 and then sent to the transmission part of a CPU1. While a subprogram 22a is stored to a subprogram exclusive area 22. When the program 22a is detected by retrieval, said transmission part edits a transmission sentence from both programs 21a and 22a excluding the key word part. The transmission sentence and all programs following the transmission procedure in said sentence are converted into code types to be transferred and then stored to a transfer file area 23. In this case, the code types are stored into a transmission data file 23a and a transmission procedure file 23b respectively. When a request is given for the NC data, the CPU1 transmits the data between main and subprogram areas while referring to the transmission procedure.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a data transmission device in a numerical control device, and particularly to data transmission in a direct numerical control device that centrally controls a plurality of NCs and machines using NC commands from a central host computer.

Regarding equipment.

Historically, numerical control devices for machine tools have developed by reflecting the production management system of each era and harmonizing those requirements with the company's own technological level. Early paper tape media devices provided sequential data for one tape to each machine, and had a small memory capacity.

Although I had the problem of having to change the tape frequently,
However, it was still suitable for transfer machines that produce a large quantity of raw materials in small quantities. Over time, various types of memory were developed and came to be attached to NC@ locations as auxiliary storage, but they were too expensive to store large NC programs, so they were only used in combination with tape. . However, recently, F.A.
As factory automation (factory automation) progressed, and the cells at the end of the factory were automatically managed by higher-level computers, numerical control also became centralized by directly transferring the computer programs from the central host computer to multiple NC machines at the terminals. Direct Numerical Control (DNC) had to be adopted, and host combinations came to be equipped with large-capacity magnetic disk memories as external storage devices. Today, FA has progressed even further, with unmanned trolleys operating from automated warehouses for storing workpieces between cells, and after an era of high-mix, low-volume production, we are responding flexibly to both types and quantities to meet changing needs. ”bts (flexible)
We are now in the era of manufacturing systems. And the numerical control device is also just a conventional die reflex) NC.
However, this became insufficient, and CNC (Computer Numerical Control) became necessary, making full use of various large-capacity memories and microprocessors developed in recent years. This is because many workpieces are lined up on the table of the machine tool, and one
Studies on flexibility, such as "6 multi-piece machining with one program," have been televised.To process these, it is necessary to multiplex the programs and make the program for work 1 (lliI) into a sub program and use it in the main program. It is possible to increase the data by repeating a relatively small number of similar turns.However, in N-C, the program for 21 tools is long, and there are many molds. In some cases, it corresponds to the nap length in kilometers, and it cannot be stored in the memory of the NC!! as a subprogram.
In addition, in the conventional direct NC, even if a large-capacity external storage device is provided at the center, the program is transferred sequentially online, so the FMS
The corresponding program could not be stored in the memory of the NC device, making it difficult to take out multiple workpieces.

It is an object of the present invention to address the above problems.

It is an object of the present invention to provide a data transmitting device for a new direct numerical control device that can handle optical signals even for long-term unmanned operation and multi-workpiece picking.

In order to achieve the above object, the present invention provides a main program area and a subprogram area in an external storage device of a host computer, and creates a transfer file and a program message that creates a Canadian program message while moving between these areas. It is characterized by being equipped with an index file for this purpose, so that the transmission unit in the CPU of the small storage computer can simultaneously edit the transfer text while converting the memory language into the NC language. .

Since it becomes possible to call the central subprogram as required from the buffer device of the NC machine, there is no need to strain the capacity of the auxiliary storage device on the NC side.

Hereinafter, the present invention will be explained in detail with reference to examples and drawings.

Figure 1 schematically shows an example of a data transmitting device in a direct numerical control device suitable for carrying out the present invention.
It is the cause. In the figure, the central host computer includes a CPU (Central Processing Unit), a magnetic disk 2 as an external storage device, a keyboard 3, and a display 4.

The printer 5 is connected to one communication line 8 via a CCU (communication control unit) 6 and an NLU (network linkage unit) 7. The communication line 8 is an optical data highway that uses optical fiber cables that are thin, lightweight, and unsusceptible to electrical interference, and the NLU 7 is a selection means that captures only the data that corresponds to itself from among the data flowing on this data highway. . The NC machine side is also connected to one communication line 8 via the NLU 7 and includes a plurality of NC devices IL9 and a sequence e-controller 10. Normally, while the first NC unit 9a is causing the sequence controller JO to execute the received program, the second NC unit 9b receives the next program from the communication line 8 and processes it. . Each NC6&f
kg is 1! It is equipped with a buffer device 91 having & functions and an interactive function, and a sequential command section 92 having a table indexing function. Generally, recent NC devices have a built-in memory as an auxiliary storage device, and if a program transferred from a host computer includes an instruction to call a subprogram, the corresponding subprogram exists in the memory. Then do it. Conventionally, an alarm would be issued if the subprogram did not exist, but in the present invention, an exclusive area for the subprogram is provided in the external storage device on the central side. The subprogram can be searched for and requested to be sent via the subprogram.

Next, the host computer, which is a main part of the present invention, will be explained in more detail. FIG. 2 is a schematic configuration diagram showing an example of the main parts of the data transmitting device in the direct numerical control device according to the present invention. In the figure, the main parts include the CPU of the host computer, the magnetic disk 2 as an external storage device, NC device i9 which is the control part of NO3 machine
The communication time between the CPUI and the NC device it9 is $8.
5, programs or data are sent and received. The magnetic disk 2 has a main program dedicated area 2.
], subprogram dedicated area 22, transfer file area 2
3 and a center file area 24, and the NC device 9 is provided with a buffer device 91, a user macro 92, and a tape reader 93. The tape reader 93 and remote buffer 91 are selected by a changeover switch, but normally the buffer device w9J is enabled. Furthermore, the language used within the CPUI and on the magnetic disk 2 is usually based on a code format called JiS-g or BBCDiC, while on the other hand, in the NC system 9, EiA or i
A code format called 80 code is a general-purpose NC language.

Therefore, when the host cocipitor transfers programs or data, it is necessary to
Code conversion must be performed by batch processing in the transmitting section within the PUI. Conventionally, this transmitter simply converted the code for each character without checking the contents of the transmitted message at all, but in the present invention, the source data of the main program specified from the dedicated area 21 is converted. The code is converted while being analyzed, and once the format related to the sub program and program call is determined, it is searched to see if the corresponding subprogram is registered in the predetermined dedicated area 22, the code is converted for that subprogram as well, and the program is started from the main program. Walks from sub to main (Creates a transmission procedure with indicators and stores it in area 23 of the transfer file.The sub program is named in a predetermined format so that it can be searched. If necessary, the key and word related to the call will be registered in the center file area 24 in the %magnetic database 2.

FIG. 3 is an explanatory diagram showing a dedicated area of the magnetic disk. In the figure, the magnetic disk 2 includes a main program dedicated area 21, a subprogram dedicated area 22. A transfer file area 23 and a center file area 24 are provided.
It is being

For convenience of understanding, an example of subprogram call information (keyword format) registered in the center file is shown in the table below.

IP, x Table Now, the main program dedicated area 21 stores a main program 21a. Assume that the example is the following source data.

G28
is caught. Therefore, the POOIO indicated as the address of the subprogram is searched, and if the program does not exist, the program on the above four lines is directly arranged to be transmitted to the NC device.

On the other hand, the subprogram dedicated area 22 stores a subprogram 22a. The upper two digits (O]) of the number of QOI 0010 shown as an example of the subprogram name indicate the machine number, and the lower four digits (0010) indicate the subprogram number. That is, in one example of the main program, there is a subprogram designated by a four-digit number POOIO, and the contents thereof are shown in the following example.

0OIO GooYo (Fast-forward instruction) GoIZo (Cutting instruction) M2O (Return to main) When this subprogram is found in the search, the sending section sends the following message from the two programs, excluding the keyword part. Edit to.

1 G28XO (return machine to origin) GooYo (fast forward instruction) GOIZO (cutting instruction) M2O (end of program) This transmission statement and all subprograms accompanying the transmission procedure in the statement are converted into a transferable code format, It is stored in the transfer file area 23. File storage is
Transmission data file 23a and transmission procedure file 23b
The transfer method (iX) is attached to the transmission procedure file 23b.

The above preparations are completed, the workpiece is set on the NO machine,
When there is a NO transfer request, the host computer refers to the transmission procedure and transmits the data to be transmitted while moving between the main and sub stations.

In addition, the subprograms can be stored in the auxiliary storage device of the NC device! (memory) does not impede the present invention. Even if there is a sub call in the main program and the target sub program is not registered on the magnetic disk side, no error will occur; the host computer will send the sub call code as is to the NC device and store it in the memory in the remote buffer. Call a subprogram from. An alarm is generated only when the corresponding subprogram cannot be found in the memory of the NC device. Also.

Similarly, a macro program that changes the dimensions of machining or allows an external interrupt may be stored in the auxiliary storage device of the NC device, and then called by the main program.

FIG. 4 is a flowchart showing an outline of the program flow in the above embodiment.

As explained above, the present invention provides a dedicated area in a large-capacity external storage device on the host computer side, stores an NC program multiplexed into a main program and a subprogram, and converts the code into a general-purpose NC candy. When sending messages, the editing function of the host computer is used to create and transfer messages while moving between areas, so there is no need for additional memory on the NC device side, and the interaction function of the buffer device of the NC device is utilized. , it is also possible to call subprograms on the central side.

This has the effect of facilitating long-term unmanned operation and picking up multiple workpieces.

[Brief explanation of drawings]

Figure 1 is a schematic configuration diagram of the data transmitting device in the NC device. Figure 2 is a schematic diagram of the main parts of the data transmission device in the NC device of the present invention; Figure 3 is an explanatory diagram of the dedicated area of the external storage device of the present invention; and Figure 4 is a flowchart of the embodiment. . J...Hoss), CPU 2...External storage device 8...
・Communication line 9...NC device 21...Main program exclusive area 22...Sub program exclusive area 23...Transfer file area 24...Center file area

Claims (1)

[Claims] (11) A host computer that is equipped with an external storage device that stores a basic program for operating an NC machine, and that has a built-in transmitter that converts the code format for the external storage device into a general-purpose NC code format and sends it out. , its host computer and NC@
In a numerical control device consisting of a communication line for networking with a machine and an NC machine equipped with a buffer device for interacting with a host computer via the communication line, a basic program for non-repetitive operation is stored in an external storage device. a first dedicated area that stores the main program of the basic program; a second dedicated area that stores subprograms for repetitive operation of the basic program; and a jump between the first dedicated area and the second dedicated area. A transfer file area for creating a message to be sent to the NC machine and a center file area for defining the calling language used when creating the message are provided, and these 17) 7" programs or files are transferred to the host computer. A data transmitting device for a numerical control device, characterized in that the data can be freely called from a transmitting section in the host computer. A data transmitting device for a numerical control device described in item 1 of the patent scope, characterized in that the data transmitting device is capable of freely recalling a subprogram or macro that is stored in the auxiliary storage device. 2. A data transmitting device in a numerical control device according to claim 1, wherein the main program includes a program call command.