WO1997014999A1 - Systeme de commande numerique - Google Patents

Systeme de commande numerique Download PDF

Info

Publication number
WO1997014999A1
WO1997014999A1 PCT/JP1996/003043 JP9603043W WO9714999A1 WO 1997014999 A1 WO1997014999 A1 WO 1997014999A1 JP 9603043 W JP9603043 W JP 9603043W WO 9714999 A1 WO9714999 A1 WO 9714999A1
Authority
WO
WIPO (PCT)
Prior art keywords
access
data
numerical control
permission
control system
Prior art date
Application number
PCT/JP1996/003043
Other languages
English (en)
Japanese (ja)
Inventor
Hideaki Inoue
Teruhisa Hatta
Original Assignee
Fanuc Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fanuc Ltd filed Critical Fanuc Ltd
Publication of WO1997014999A1 publication Critical patent/WO1997014999A1/fr

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
    • G05B19/408—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by data handling or data format, e.g. reading, buffering or conversion of data
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/30—Nc systems
    • G05B2219/36—Nc in input of data, input key till input tape
    • G05B2219/36542—Cryptography, encrypt, access, authorize with key, code, password

Definitions

  • the present invention relates to a numerical control system in which a data processing device having individual processing functions is connected to a numerical control device, and in particular, to a numerical control system capable of accessing the internal memory of the numerical control device from the data processing device. About the system.
  • CNC numerical controllers
  • PC programmable controller
  • MMC man-machine controller
  • a numerical control system is configured including these.
  • MMC personal computer
  • MMC and personal computers are data processing devices that have a separate processor from the numerical control device.
  • a numerical control system having MMC will be described as an example.
  • the MMC can input and output data interactively, and can incorporate various special programs (hereinafter referred to as applications) for the user to operate the numerical control system. Users can arbitrarily create applications to improve system operability.
  • the user can access various data stored in the internal memory of the CNC or PC by issuing a command through the application. Access to the internal memory of the CNC or PC from the application is made possible by using the data window.
  • the data window is a library function that provides a data communication function between the CNC and the MMC, and is provided in both the CNC and the MMC.
  • an application in the MMC outputs an access request according to the rules of this function, the request is passed from the data window of the MMC to the data window of the CNC, and the CNC side Data windows perform access as requested.
  • the DataWindow offers a very wide range of features to increase application flexibility.
  • the object of the present invention has been made in view of the above points, and it is possible to request access to the CNC from the application on the data processing device side only within a limited range.
  • Another object of the present invention is to provide a numerical control device control system including the data processing device and the CNC.
  • a numerical control system capable of accessing the internal memory of a numerical control device from a data processing device having individual processing functions is provided by Access permission / non-permission information storage means for storing access permission / non-permission information indicating whether access to arbitrary data in the internal memory is permitted; and an access request to the internal memory in the data processing device.
  • the access permission / inhibition determining means for referring to the access permission / inhibition information to determine whether or not access to the data to be accessed is permitted, and the access permission / inhibition determination means If it is determined that the access is permitted, the access request fulfills the access to the internal memory according to the access request. It has a means and a means.
  • the access permission information is stored in advance in the access permission information storage means in the data processing device, and the access request from the data processing device to the internal memory of the numerical control device is transmitted.
  • the access permission / inhibition information is referred to to determine whether or not the access is permitted. If the access is not permitted, the access request is rejected.
  • Important data in the numerical control unit is not destroyed by erroneous operation of the user who operates the processing unit or bugs in the application. Become.
  • programming can be performed without being conscious of the memory configuration in the numerical control device, and the speed of application development and the reliability of the entire system can be improved. The performance is improved.
  • FIG. 1 is a block diagram showing a schematic configuration of a numerical control system according to the present invention.
  • Fig. 2 is a block diagram showing the configuration of a numerical control system for implementing the present invention.
  • FIG. 3 is a diagram showing an internal configuration of a data window provided with a function for determining whether access is possible.
  • FIG. 4 is a flowchart showing the processing procedure of the numerical control system when an access request to the RAM of the CNC is generated in the MMC.
  • Figure 5 shows a block diagram of the storage function of access permission information.
  • the numerical control system includes a numerical control device 2 and a data processing device 1.
  • the data processing device 1 has its own processor and can incorporate an application la created by the user.
  • a man-machine controller (MMC) or a small computer is used as the data processing device 1.
  • the data processing device 1 includes access permission / inhibition determining means lb and access permission / inhibition information storage means lc.
  • the access permission / non-permission information storage means 1c includes information as to whether access to the data in the internal memory 2b of the numerical controller 2 is permitted or not permitted from the data processing device. It is stored as information.
  • the numerical control device 2 includes access request execution means 2a and internal memory 2b.
  • the access availability determination means 1b refers to the access availability information in the access availability information storage means 1c. Then, it is determined whether or not access is permitted.
  • the access request execution means 2a in the numerical controller 2 executes access to the internal memory 2b only when access is permitted.
  • the data processing device denies access to that data. be able to. Therefore, important data in the numerical control device is not destroyed by a user's erroneous operation or a bug in the application.
  • the access permission / non-permission determining means 1 b and the access permission / non-permission information storage means 1 c are provided in the data processing device 1. These may be provided in the numerical control device 2.
  • the processor 11 is connected to the ROM 19, RAM I3, nonvolatile memory 14, axis control circuit 21 and PMC (programmable 23, and the input / output interface X-source 46 are connected respectively.
  • PMC is a type of PC (programmable controller).
  • the processor 11 controls the entire interactive numerical controller according to the system program stored in the ROM 12.
  • EPOM or EPROM is used for R0M12.
  • RAM I 3 SRAM or the like is used to store various data or input / output signals.
  • the non-volatile memory 14 uses a CMOS that has been picked up by a not-shown notch, and the parameters and pitches that should be retained even after the power is turned off. Stores error correction amount and tool correction amount.
  • the NC machining program is stored in this non-volatile memory 14.
  • the axis control circuit 21 receives an axis movement command from the processor 11 and outputs the axis command to the servo amplifier 22. Upon receiving the movement command, the servo amplifier 22 drives the servomotor of the machine tool 50.
  • the PMC 23 receives T function signals (tool selection commands), etc., processes these signals with a sequence program, and outputs signals as operation commands Then, the machine tool 50 is controlled. PMC 23 is a status signal from machine tool 50 Then, it performs the sequence processing and transfers the necessary input signal to the processor 11.
  • the input / output interface 46 is used to transfer NC data to and from external devices, such as a floppy disk drive (FDD), printer, or PTR (paper tape reader). It controls the input and output of data including.
  • FDD floppy disk drive
  • PTR paper tape reader
  • bus 19 has a processor for dialogue, which is separate from the processor 11 for the NC. 31 is connected by bus 29.
  • the interactive processor 31 has a bus 39, a ROM 32, a RAM 33, a non-volatile memory 34, a VRAM (video RAM) 35, and a graphic control circuit 3. 6 is fired.
  • the processor 31 executes the interactive processing program stored in the ROM 32, and the work or data that can be set on the interactive data input screen is described later in a menu format. Display on the display device 4 3. In addition, a machining program is created from the data input in this manner, and the entire operation trajectory of the tool is displayed as a back ground animation.
  • the ROM 32 stores an input screen and the like for the interactive data processing in addition to the interactive processing program.
  • An SRAM or the like is used as the RAM 33 to store various data for conversation.
  • Non-volatile memory 34 was knocked up by a battery not shown CMOS is used to store program data, machining programs, and information on whether or not access is possible in the CNC, which should be retained even after the power is turned off.
  • the VR AM 35 is a RAM that can be accessed at high speed, and performs a cutting simulation of the machine tool 50 based on the machining program stored in the nonvolatile memory 34 as an NC statement. At this time, a graphic image for displaying the animation is stored.
  • the graphic control circuit 36 converts the graphic data stored in the VRAM 35 into a signal for display and outputs it.
  • a CRT / MDI cathode ray tube / manual data input
  • the panel 40 is connected to a bus 19, and a graphic control circuit 41, a switch 42, a display device 43, a keyboard 44, and a software key 45 are provided.
  • the graphic control circuit 41 converts a digital signal output from the processor 11 or the like into a signal for display and outputs the signal.
  • the switch 42 switches the display signal output from the graphic control circuit 36 or the graphic control circuit 41 and supplies the signal to the display device 43.
  • As the display device 43 a CRT or a liquid crystal display device is used.
  • the program data is processed into display data by the interactive processor 31 and displayed by the graphic control circuit 36. And is displayed on the display device 43.
  • the shape, the machining conditions, and the like are converted into signals for display by the graphic control circuit 41 and displayed on the display device 43.
  • the MMC as a data processing device accesses the internal memory of the CNC using a data window.
  • the data window in the MMC with a function for determining whether or not access is possible, it is possible to reject access from the MMC to important data in the CNC.
  • the MMC 30 has an application 30a, a data window 37, and a nonvolatile memory for storing the access permission / prohibition information. Re 34 is provided. Further, a display device 43 is connected to the MMC 30. On the other hand, the CNC 10 is provided with a data window 15 and a RAM I 3.
  • the data window 37 on the MMC 30 side determines whether the access request is a read request or a write request.
  • the system program cannot read and write data from MMC 30, and the data A can be read from MMC 30.
  • Data can be read / written by MMC30, and data can be read / written.
  • the storage area of the system program (A000 to AFFF) cannot be read / written to the non-volatile memory 34 in the MMC 30 and the storage area of the data A (B000 To BFFF) can be read.
  • Z-write cannot be performed.
  • Data B storage area. Stores access enable / disable information that allows (C000 to CFFF) to be read-write. The method of storing this access availability information will be described later.
  • the access request is processed in the data window 37.
  • the data window 37 determines whether the access request is a read request or a write request.
  • the access permission / non-permission judging part 37 b is configured to store the key in the nonvolatile memory 34. Referring to the access permission information, it is determined whether or not the access request can be executed. In other words, in the case of a read request, the system program (address: A000 to AFFF) cannot be accessed. In the case of a write request, the system program (address: A000 to AFFF) and data overnight A (address: B000 to BFFF) cannot be accessed.
  • a signal indicating access permission is output from the access permission / inhibition judging section 37b to the access request output section 37c.
  • the access request output unit 37c Upon receiving the access permission signal, the access request output unit 37c outputs the access request output by the application to the CNC 10 when the access permission signal is received.
  • the access request is received by the data window 15 on the CNC 10 side. Then, the overnight window 15 executes access to the RAM 3 according to the access request.
  • the access determination section 37b determines that access is not possible, a signal indicating this is output to the error message output section 37d.
  • the error message output section 37 d receives the access-disabled signal, the error message output section 37 d outputs a message to the effect that access has been denied to the display device 43. By confirming this message, the user knows that the instruction issued to the application 30a caused access to the CNC 10 important data and was rejected.
  • the MMC process which is started when an access request to the RAM 13 of the CNC occurs in the MMC.
  • the processing procedure of the sensor will be described with reference to the flowchart of FIG.
  • the access request is first a read request or a light request. Is determined (step S 1).
  • step S2 If it is a write request, it is determined whether the data or the program to which the write request is applied is previously identified as writable (step S2). As a result, if writing is possible, a command is issued to the CNC processor to execute the writing request (step S4), and this processing ends. On the other hand, if writing is not possible, an indication that writing is not possible is output (step S3), and this processing ends.
  • step S1 If the determination in step S1 is a read request, it is determined whether the data or the program targeted by the read request has been identified in advance as readable. Judgment is made (step S5). As a result, if the read is possible, a command is issued to the CNC processor to execute the read request (step S6), and this processing ends. On the other hand, if reading is not possible, an indication that reading is not possible is output (step S3), and this processing ends.
  • the access availability information regarding the CNC internal information is stored in the MMC in advance, and when the MCC issues a request for access to the CNC internal memory.
  • access to important data in the CNC can be restricted by referring to the access availability information. Therefore, there is no need to include a function to deny access to important data in CNC in applications to be incorporated into MMC.
  • when creating an application there is no need to be aware of the configuration of the CNC memory space. This improves work efficiency when creating applications. Also, even if there is a bug in the application, it is not possible to access the area where access is not allowed, so the possibility that the numerical controller malfunctions due to a bug in the application is reduced. .
  • an access permission information setting section 37 e is provided in the data window 37.
  • the access permission information setting section 37 e writes the data accessed by the access request output from the access request output section 37 c to the access permission information in the non-volatile memory 34.
  • Set as data that permits access That is, by outputting an access request for predetermined data in the CNC, the operator can teach that the data is data to be permitted to sum access. After this, this data can be accessed. In other words, this means that the teaching function is incorporated.
  • the key is used.
  • the condition is that MMC can access the data for which access is not set. That is, in this case, the access permission / non-permission judging section 37b (shown in FIG. 3) judges that data other than the data which is not "accessible” is "accessible".
  • teaching can be performed while the function of the access permission / non-permission determining unit 37b is stopped.
  • an access availability information editing function unit 38 is further provided.
  • the access permission / inhibition information editing function section 38 outputs an access permission / inhibition information editing screen to the display device 43, and changes the content of the access permission / inhibition information in accordance with the operation of the keyboard 44.
  • this editing function it is possible to freely set which area is accessible and which area is inaccessible.
  • the access permission / prohibition information may be first stored by the teaching, and then the detailed setting change may be performed by the editing function. It is possible.

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  • Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Numerical Control (AREA)
  • Storage Device Security (AREA)

Abstract

Un système de commande numérique est constitué par un processeur de données (1) et un contrôleur numérique (2). Lorsqu'une demande d'accès à la mémoire interne (2b) du contrôleur (2) d'un programme d'application (1a) est sortie, un moyen d'évaluation (1b) de l'acceptation/rejet d'accès évalue si la mémoire (2b) est accessible ou non, tout en se référant à l'information d'acceptation/rejet d'accès se trouvant dans un moyen de mémorisation (1c) de l'information d'acceptation/rejet d'accès. Un moyen d'exécution (2a) de la demande d'accès dans le contrôleur (2) permet l'accès à la mémoire (2b) uniquement quand l'accès à la mémoire (2b) est autorisé. Ainsi, les données qui ne doivent pas être accessibles librement aux utilisateurs, sont rendues inaccessibles, et tout accès aux données est rejeté.
PCT/JP1996/003043 1995-10-19 1996-10-21 Systeme de commande numerique WO1997014999A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP7/271313 1995-10-19
JP7271313A JPH09114513A (ja) 1995-10-19 1995-10-19 数値制御システム

Publications (1)

Publication Number Publication Date
WO1997014999A1 true WO1997014999A1 (fr) 1997-04-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1996/003043 WO1997014999A1 (fr) 1995-10-19 1996-10-21 Systeme de commande numerique

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JP (1) JPH09114513A (fr)
WO (1) WO1997014999A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002065287A1 (fr) * 2001-02-16 2002-08-22 Sony Corporation Procede de traitement de donnees et appareil correspondant
JP2002244921A (ja) * 2001-02-19 2002-08-30 Sony Corp データ処理装置
CN1313917C (zh) * 2001-10-31 2007-05-02 索尼株式会社 数据处理装置以及数据处理方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7401269B2 (ja) * 2019-11-19 2023-12-19 ファナック株式会社 制御装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62150438A (ja) * 1985-12-24 1987-07-04 Omron Tateisi Electronics Co 制御機器のプログラムプロテクト装置
JPH04184506A (ja) * 1990-11-20 1992-07-01 Yamazaki Mazak Corp 数値制御工作機械の制御情報の保護装置
JPH05143130A (ja) * 1991-11-22 1993-06-11 Okuma Mach Works Ltd 数値制御装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62150438A (ja) * 1985-12-24 1987-07-04 Omron Tateisi Electronics Co 制御機器のプログラムプロテクト装置
JPH04184506A (ja) * 1990-11-20 1992-07-01 Yamazaki Mazak Corp 数値制御工作機械の制御情報の保護装置
JPH05143130A (ja) * 1991-11-22 1993-06-11 Okuma Mach Works Ltd 数値制御装置

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002065287A1 (fr) * 2001-02-16 2002-08-22 Sony Corporation Procede de traitement de donnees et appareil correspondant
US7240345B2 (en) 2001-02-16 2007-07-03 Sony Corporation Data processing apparatus and associated method
SG143976A1 (en) * 2001-02-16 2008-07-29 Sony Corp Data processing method and its apparatus
US8141057B2 (en) 2001-02-16 2012-03-20 Sony Corporation Data processing apparatus and associated method
JP2002244921A (ja) * 2001-02-19 2002-08-30 Sony Corp データ処理装置
JP4617581B2 (ja) * 2001-02-19 2011-01-26 ソニー株式会社 データ処理装置
CN1313917C (zh) * 2001-10-31 2007-05-02 索尼株式会社 数据处理装置以及数据处理方法

Also Published As

Publication number Publication date
JPH09114513A (ja) 1997-05-02

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