JPS62139007A - Numerical controller - Google Patents

Abstract

PURPOSE:To easily switch the display screen of an alarm message etc., to the immediately preceding display screen again, by storing the contents of the preceding display in a memory in case the monitored action signal, state signal, etc., have the abnormality. CONSTITUTION:A ROM 11 which stores a control program, a RAM 12 which stores various types of coordinate value, a tape leader 13, a CRT 14, a keyboard 15, etc., are connected to a CPU 10. Then the CPU 10 delivers an action command via a position control part 21. Here the input/output of an NC part program is possible as necessary to a nonvolatile memory 16. A RAM 25 stores the contents of display of the CRT 14 while replacing them successively. Therefore the original display of the screen is reset immediately after an alarm message or an operator message is released by a command given from the keyboard 15. This reduces the load of an operator.

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention provides a display device for displaying the operating status of machine tools, robots, etc. that are subject to iM, with an automatic screen return function. Related to numerical control devices.

(Prior art) For example, when trying to make a robot perform a predetermined task, it is necessary to constantly monitor whether the robot is performing the operations according to the settings1. The MDI/CRT panel of the robot control device is used. While the robot is operating, the CRT character display can constantly display data related to the robot's status, such as current position data, error hood, diagnostic data, welding conditions, parameters, timing data, registers, etc., and can be specified using the MDI keyboard. By selecting a screen, data can be added, changed, or deleted one by one.

By the way, when such a numerical control device generates an alarm or when an external alarm message is input from a peripheral device, the screen display for the selected operation is temporarily cleared and the corresponding alarm message is displayed on the screen. become. The same applies to operator messages displayed when data is added or corrected, and after these alarm messages and operator messages are displayed, it is necessary to return to the intended screen display.

(Problem to be Solved by the Invention) However, in conventional numerical control devices, after an alarm or an operator message is canceled, the message is simply erased. It was necessary to operate the screen selection button to return the display screen to its original state. However, in order to make the robot perform complicated operations, a variety of part programs are required, and the more complex the control programs stored in the numerical control device, the more difficult the operations for the operator become.

Therefore, the present invention solves the problems of the conventional technology and solves the problems of the conventional technology. The purpose of the present invention is to provide a numerical control device that automatically returns from the display screen of an alarm message or operator message to the previous display screen when an abnormality occurs in the operation signal, status signal, etc. monitored by tH. It is said that

(Means for Solving the Problems) The present invention includes an arithmetic processing device, an output means for outputting an operation command to an external device such as a machine tool according to processing data from the arithmetic processing device, and a a display means for displaying operation commands and data between peripheral devices controlled by the arithmetic processing unit; and a display means for storing display contents on the display means or display contents management information while updating them sequentially or when the display contents change. a storage means, and a display means detecting that the display means displays an alarm message or an operator message when an abnormality occurs in the operation signal or status signal monitored by the arithmetic processing unit, and the display means detects that the display means displays an alarm message or an operator message before updating in the storage means; The present invention provides a numerical control device including a control means for holding display content or display content management information.

(Function) According to the numerical control device of the present invention, an alarm message,
The screen content or display content management information that was selected before displaying operator messages etc. is memorized.
You can easily return to the original screen.

(Example) Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a block diagram of a numerical control device showing an embodiment of the present invention.

Arithmetic processing unit i! (CPU) 10 includes a ROM II that stores a control program, a RAM 12 that stores various coordinate values, a tape reader 13, and a display device (CRT) 1.
4, a keyboard 15, etc. are connected. Reference numeral 16 denotes a non-volatile memory such as a bubble memory or a memory having a CMOS configuration, which allows the created NC part program to be input/output as appropriate.

17 is a servo motor of the robot, and the rotation speed signal of this motor 17 is the tachometer power generation 41! A position signal is fed back from the (tachogenerator) 18 to the speed control section 19, and a position signal is fed back from the position detector 20 to the position control section 21, respectively. Reference numeral 22 indicates a JOG/5TEP feed reswitch provided on a teaching operation panel, etc., which is input to CPtJlo via a feed switch section 23, and a signal from a manual pulse generator 24 allows manual feeding to position the robot and to. It looks like this.

Reference numeral 25 denotes a RAM that stores the contents displayed on the display device 14 while updating them one after another. Since the contents selected by the operator and displayed on the screen are stored in the RAM 25, the original screen display can be immediately restored after the alarm message or operator message is canceled by a command from the MDI keyboard 15.

For example, when an overtravel alarm occurs during automatic operation and the corresponding Canadian program is called up to the CRT 14 to be corrected, conventionally, the displayed content before the alarm was erased, so the operator had to operate the keyboard. The user had to call up the display screen necessary to continue operation, but the function key for canceling the alarm had to be pressed in the RAM 25.
By configuring it to work in conjunction with the output command.

Operator operation is significantly simplified. In this case,
The RAM 25 does not necessarily store screen information for one screen! It is not necessary to keep the page in memory, but it is also possible to memorize the corresponding page information in RAM 12 or ROMI 1 and return to the original screen from that page information when the alarm is released, or display that page information on the CRT 14. Alternatively, the operator may be notified.

(Effects of the Invention) As explained above, according to the present invention, the operating signals and conditions monitored by the arithmetic processing unit are 7! ! When an abnormality occurs in the i-signal, etc., since the immediately previous display contents are memorized, it is possible to easily switch from the alarm message or operator message display screen to the immediately previous display screen, reducing the burden on the operator. It is possible to provide a numerical control device that can perform the following functions.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a front view showing an example of a robot-based u4 device. lO...CPU, 11...ROM, 12...RA
M, 14...CRT, 25...RAM.

Claims (1)

[Claims] an arithmetic processing device; an output means for outputting operation commands to external equipment such as a machine tool according to processing data from the arithmetic processing device; and peripheral devices controlled by the operation commands from the output means and the arithmetic processing device; A display means for displaying data between and the display contents of this display means, or
a storage means for storing display content management information sequentially or while updating it when display content changes; and an alarm message or an operator message when an abnormality occurs in the operation signal or status signal monitored by the arithmetic processing unit in the display means. control means for detecting that the alarm message or operator message has been displayed and retaining the display content or display content management information before being updated in the storage means, and when the alarm message or operator message is canceled, the display screen is A numerical control device characterized by automatically switching to the previous display screen.