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
  • G05B19/406—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 monitoring or safety
  • G05B19/4063—Monitoring general control system
• • 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
  • G05B2219/33—Director till display
  • G05B2219/33284—Remote diagnostic

Definitions

• the present invention relates to a remote diagnosis method for a CNC which remotely diagnoses ft due to a numerical control device (CNC), and particularly to a remote control method for a CNC which remotely transmits display data of the numerical control device to a computer.
• CNC numerical control device
• the present invention has been made in view of such a point, and an object of the present invention is to provide a remote diagnosis method of a CNC for transferring display data of a numerical controller to a computer by remote control.
• an object of the present invention is to provide a remote diagnosis method of a CNC for transferring display data of a numerical controller to a computer by remote control.
• a remote diagnosis method of a CNC for diagnosing a failure of a numerical control device (CNC) from a remote place, an operation key for performing a remote operation command, and an operation command conversion means for converting the remote operation command into transmission text.
• a display data converting means for converting the diagnostic data into a video signal; a display device for displaying the display data; and a communication control unit for transmitting the transmission text and receiving the diagnostic data.
• a remote operation command decoding means for decoding the remote command; a diagnosis data selection means for selecting necessary diagnosis data by the remote operation command; a display device for displaying the diagnosis data; and the diagnosis Video data conversion means for converting data into transmission text, and a communication control unit for receiving the remote operation command and transmitting the diagnostic data
• a numerical control apparatus having a communication line coupling the computer and the numerical control device, remote diagnosis system C N C, characterized in that they are composed is,
• the computer outputs a remote operation command, transfers it to the numerical controller via the communication line, and transfers the diagnostic data of the numerical controller selected by this remote operation command to the computer. I do.
• FIG. 1 is a block diagram of an embodiment of a remote diagnosis method for a CNC according to the present invention.
• FIG. 2 is a block diagram of the hardware of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION
• FIG. 2 is a block diagram of the hardware of the present invention.
• FIG. 1 shows the CN of the present invention.
• FIG. 2 is a block diagram of an embodiment of the remote diagnosis method according to the present invention.
• 10 is a computer, and a general 16-bit or 32-bit personal computer (PC) or a workstation can be used.
• PC personal computer
• the personal computer 10 is located at a service base, and a remote operation command is issued by a service engineer having comprehensive knowledge.
• the service engineer can use the personal computer 10 to issue necessary operation commands, obtain necessary data from a remote numerical control unit, execute diagnosis, execute faults, errors in the machining program, Lame Find out the setting error etc. overnight, and give instructions for repair and modification of the machining program as necessary.
• Reference numeral 13 denotes operation command conversion means, which converts the remote operation command 12 into transmission text. That is, Converts remote operation commands into transmission codes and formats, and adds check bits.
• Reference numeral 14 denotes transmission control means for notifying the start of transmission.
• a communication control unit 15 transmits a remote operation command and receives diagnostic data.
• the physical interface uses R.S.23C, but other interfaces can be used as needed.
• Reference numeral 16 denotes reception control means for notifying reception of diagnostic data from the numerical control device 30 to the inside
• reference numeral 17 denotes a video data extracting means for extracting video RAM data from the received diagnostic data.
• Reference numeral 18 denotes display data conversion means for converting data into video data for one screen of the display device.
• Reference numeral 19 denotes a video RAM, which stores video data for one screen. Of course, this video RAM can be expanded to multiple screens if necessary.
• Reference numeral 20 denotes a display device, such as a CRT or a liquid crystal display device. CRT is used here.
• a display for one screen of the display of the numerical control device described later is displayed on the display device 20, and the service engineer looks at this screen, and at the service center, the numerical control device installed at a remote location. Diagnosis can be performed.
• Numeral 30 denotes a numerical control device (CNC) to be diagnosed, which is installed at a remote location from a service center where service engineers are located.
• Reference numeral 31 denotes a communication control unit, which is composed of the same RS232C interface as the communication control unit 15.
• 3 2 is a reception control means, which notifies the reception of the remote operation command internally I do.
• 3 3 is a remote operation command decoding means for decoding a remote operation command from a received signal.
• a selection signal for selecting a display screen is used for the remote operation command.
• Numeral 34 denotes diagnostic data selection means for selecting diagnostic data according to a remote operation command. In practice, the display screen is selected from internal memory. A selection signal is input to the diagnostic data selection means 34 from the operation keys 38 by an operator on the numerical controller 30 side. This is performed based on the instruction of the service engineer in the personal computer 10.
• Reference numeral 35 denotes a diagnostic data conversion unit that converts data of the selected display screen into data of one displayable screen.
• Reference numeral 36 denotes a video RAM, which stores video data to be displayed on the display device 37 and is displayed on the display device 37. This display is monitored by an operator near the numerical control.
• Video R A M 36 Data is video data reading means 3
• the data is read by 9, and a check bit or the like is added by the video data conversion means 40, and is converted into transmission text.
• the transmission text is transmitted from the transmission control means 41, and is transmitted from the communication control section 31 as diagnostic data.
• the screen of the numerical controller 10 operated remotely is as follows.
• the current position, etc. is a basic amount for knowing at which machine position a fault has occurred, and is the basic data for fault diagnosis.
• the alarm display screen displays the contents of the alarm, which may be easily discerned by the operator.
• the service engineer needs to see and judge it.
• the local operator does not have sufficient knowledge of the numerical control device, etc., so it is necessary for the service engineer to refer to the final screen.
• Input / output signals to the numerical controller are used to determine whether external hardware is operating properly.
• part program display screen It is necessary to select a lamella display screen, ROMZRAM data display screen, offset display screen and system program version display screen. Of course, these screens are merely examples, and new screens necessary for fault diagnosis can be defined and selected as needed.
• Reference numerals 51 and 52 denote modems for converting transmission data into signals on the communication line 53.
• the communication line 53 uses a public line of about 2400 bitZs to about 960 bitZs.
• transmission lines of 64 kbit / s or more for high-speed digital transmission are desired. Good.
• the communication control units 15 and 31 also need to be changed.
• FIG. 2 shows a block diagram of the hardware of the present invention.
• 30 is a numerical controller (CNC)
• 61 is a processor that controls the numerical controller.
• 62 is an ROM in which the system program is stored
• 63 is an RAM in which the system program is dictated and stores other data.
• Reference numeral 11 denotes an operation key
• reference numeral 20 denotes a display device
• reference numeral 64 denotes a CMOS which constitutes battery-backed nonvolatile memory.
• 7 1 to 7 5 are axis control circuits for controlling the position of each axis.
• Reference numerals 81 to 85 denote servo amplifiers, which drive servo motors 91 to 95.
• a communication port 65 outputs a remote operation signal and the like and receives a video signal.
• Reference numeral 6 denotes a PMC (programmable machine controller) built in the numerical controller 30, which controls the machine side with a sequence program created in a ladder format.
• Reference numeral 67 denotes an IZ unit, which is an interface for inputting and outputting to and from a high-power panel or a control panel on the machine side.
• 51 and 52 are modems, and 53 is a communication line.
• a communication port 43 is added to 2.
• the remote operation from the personal computer is the screen selection signal required for diagnosis
• the diagnostic data is the video signal of the display screen.
• Command and select from the numerical control device to It can be received on the computer. For this purpose, it is necessary to determine the protocol in advance.
• the display screen signal and the like of the numerical control device installed in a remote place from the computer side are obtained by remote operation, a service having comprehensive knowledge is provided.
• the engineer can diagnose the numerical controller from a remote location.

Landscapes

• 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)
• Arrangements For Transmission Of Measured Signals (AREA)
• Testing And Monitoring For Control Systems (AREA)
• Selective Calling Equipment (AREA)

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Citations (3)

Family Cites Families (7)

• 1988
  • 1988-07-26 JP JP63186604A patent/JP2541631B2/ja not_active Expired - Fee Related
• 1989
  • 1989-06-27 US US07/465,219 patent/US5124622A/en not_active Expired - Lifetime
  • 1989-06-27 EP EP89907310A patent/EP0380684B1/en not_active Expired - Lifetime
  • 1989-06-27 DE DE68925195T patent/DE68925195T2/de not_active Expired - Fee Related
  • 1989-06-27 WO PCT/JP1989/000640 patent/WO1990001186A1/ja active IP Right Grant

Patent Citations (3)

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