Boots – shoes – and leggings
Patent
1992-08-05
1993-12-28
Smith, Jerry
Boots, shoes, and leggings
36447419, 371 81, 371 161, G05B 19405, G06F 1122
Patent
active
052745465
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a diagnosis system for monitoring the interior state of a numerical control apparatus (CNC), and more specifically, to a CNC diagnosis system provided with a diagnostic processor.
2. Description of the Related Art
Numerical control apparatuses and robot control apparatuses utilize a multi-processor system including a plurality of processors, to enable simultaneous control of a multiplicity of axes. These control apparatuses comprise a plurality of the processors, many kinds of memories, a multiplicity of I/O interfaces, a position control circuit and the like, and if a malfunction occurs in any one of these elements, it is often difficult to detect exactly which element has malfunctioned.
To cope with this problem, the statuses of the internal memories, I/O signals and the like are displayed at a display, but when a malfunction occurs in a processor itself, it is difficult to detect the cause of the malfunction when only the statuses of the internal memories, I/O signals and the like are displayed, thus it often takes considerable time to restore a numerical control apparatus to normal operation.
SUMMARY OF THE INVENTION
Taking the above into consideration, an object of the present invention is to provide a CNC diagnosis system utilizing a diagnostic processor.
To solve the above problem, there is provided a diagnosis system of a numerical control apparatus (CNC) for monitoring an internal state of the CNC, wherein a processor for the CNC acts as a host processor, and a diagnostic processor monitors the processor for the CNC or other processors in a usual CNC operation mode, and the diagnostic processor executes software for diagnosing the processor for the CNC and the other processors, as the host processor, to detect a malfunction in the CNC.
The CNC processor executes the software of the CNC, as the host processor, in a usual operating state, and the diagnostic processor monitors only the other processors.
When a malfunction occurs, the CNC is switched to a diagnosis mode and the diagnostic processor executes the diagnostic software, as the host processor, and diagnoses the other processors to thereby detect the cause of malfunction.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a block diagram of a numerical control apparatus (CNC) as an embodiment of the present invention.
DESCRIPTION OF THE PREFERRED EMBODIMENT
An embodiment of the present invention will be describe below with reference to a drawing.
FIG. 1 shows a hardware arrangement of a numerical control apparatus (CNC) as the embodiment of the present invention, wherein 1 designates a diagnostic processor which usually monitors other processors but executes diagnostic software in a diagnosis mode to detect the cause of a malfunction in the other processors.
Numeral 2 designates a communication port for connecting the diagnostic processor 1 with an external host computer through a communication line, and receiving instructions for a diagnosis from, or transmitting the result of a diagnosis to, the host computer.
Numeral 3 designates a diagnostic ROM in which diagnostic software is stored; and 4 designates a diagnostic RAM which stores diagnostic software transmitted from the host computer, or temporarily stores diagnostic data to be transmitted to the host computer.
Numeral 11 designates a processor for controlling the CNC as a whole; 12 designates a ROM in which a control program is stored; 13 designates a RAM in which various data is stored; and 14 designates a non-volatile memory in which a machining program, parameters and the like are stored, and comprises a CMOS or the like backed up by a battery.
Numeral 15 designates a display control circuit for converting a digital signal to a video signal; 16 designates a display unit, which is a CRT, a liquid crystal display unit or the like; and 17 designates a keyboard for inputting various data.
Numeral 18 designates a position control circuit for controlling a servo motor; 19 designates a servo amplifier
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patent: 4456951 (1984-06-01), Henneberger et al.
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patent: 4536849 (1985-08-01), Borisch et al.
patent: 4992712 (1991-02-01), Fujimoto et al.
patent: 5124622 (1992-06-01), Kawamura et al.
Fanuc Ltd
Gordon Paul
Smith Jerry
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