JPH0224703A - Numerical controller - Google Patents

Abstract

PURPOSE:To eliminate the necessity of providing an exclusive CPU each control program processor by providing an NC controller with a CPU capable of executing time division processing of plural kinds of control programs. CONSTITUTION:When a PC stop/CNC start pulse is outputted from a CPU 103 in a time division processing period Ts shown in Fig.(a), PC control is stopped at first, and then CNC control is started. After the passage of a fixed period (TCNC) from the start of CNC control, a CNC control stop/PC control start pulse (Fig.b) is outputted. Thereby, the CNC control is stopped and the PC control is restarted. The PC control is continued until the PC control stop/ CNC control start pulse (Fig.a) is outputted again after the stop of one period of time division processing. Then, the PC control stop/CNC control start pulse and the CNC control stop/PC control start pulse are alternately outputted in each time division processing period and CNC control and PC control are alternately executed with time division under the control of the CPU 103.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a numerical control device, and more particularly to a numerical control device equipped with a numerical control section and a program control section.

[Conventional technology]

FIG. 3 is a block diagram showing the configuration of a conventional numerical control device. In the figure, (301) is the operation section, and (302) is the computer numerical control (CNC 1 section and program control section).
pc) unit, and the CNC unit includes a CNC CPU (303), a CNC
memory (304), CRT control unit (305),
m machine interface (306), paper tape reader (3
08) and I1 with paper tape puncher (309) connected
0 interface (307) Servo motor (312
) connected to the servo amplifier (311) and CNC CP
[I (303) and a servo interface (310) that uses twin tough aces. Also, PC part (31
3) is a PC CPU (314), communication memory (
315) , PC: for mail(-li(316) , and p
c dedicated machine interface (317).

Next, the operation of the conventional device will be explained based on the above configuration. For CNC, CPU (303) is memory for CNC (3
04) and controls the CRT control unit (305) according to the instruction, and also controls the I10 interface (307) and machine interface (306).
) or through the servo interface (310), data input/output and data processing are performed.

Further, through the communication memory (315), 26 copies (313
) Executes data communication with. On the other hand, in part 26,
GPtl for PC (314) is memory for PC (316)
The command is taken out from the PC machine interface (317) or the communication memory (315) according to this command.
), it performs data input and output as well as data processing.

[Problem to be solved by the invention]

Since conventional numerical control devices are configured as described above, numerical control and program control of machines are possible, but
Conventional equipment has a CP dedicated to numerical control and program control.
Since U and a dedicated memory are required, there is a problem that the hardware configuration becomes large.

This invention was made to solve the above-mentioned problems, and aims to provide a numerical control device capable of both numerical control and program control with a small-scale hardware configuration.

(Means for Solving the Problems) A numerical control device according to the present invention includes a processor that processes a plurality of types of control programs in a time-sharing manner in a control section that performs numerical control and program control for machine control, and performs machine control simultaneously. It is designed to perform numerical control and program control in divisions.

[Effect]

According to the processor of the present invention, by performing data processing of both numerical control data and program control data by time-sharing processing, machine control can be controlled numerically and programmatically without requiring a processor dedicated to each data process.

〔Example〕

An embodiment of the present invention will be described below with reference to FIG. In the figure, (101) is an operation unit, (102) is a control unit, and a CPU (103) that is shared with the CNC and PC,
CNC memory (104), PC memory (105)
), a CRT control unit (106), a mechanical interface (107), an I10 interface (108) to which a paper tape reader (110) and a paper tape puncher (111) are connected, a servo drive unit (112) to which a motor (113) is connected. It has a built-in servo interface (109) for exchanging signals between the controller and the CPU (103).

Next, the operation of this embodiment will be explained based on the above configuration. CPU (103) is computer numerical control (ON
The CPU is shared by the CNC controller (:) and the programmable controller (PC), and when performing CNC processing, the machine is controlled by CNC by fetching instructions from the CNC memory (104) and executing them sequentially. When performing PC processing, the machine is controlled by the PC by fetching instructions from the PC memory (105) and sequentially executing them.

In this way, CPII (103) controls the machine in a time-sharing manner.
The operation of NC control and PC control will be explained based on the time chart of FIG. 2. In the figure, (a) shows the pulse output timing indicating the stop of PC control and the start of CNC control;
(b) shows the pulse output timing indicating the stop of CNC control and the start of PC control, (c) shows the CNC control execution period, and (d) shows the PC control execution period. During the time-sharing processing period Tg shown in FIG.
When the C stop/CNC start pulse (Figure a) is output, first the PC control is stopped, and then the CNC control is started. C
After a certain period of time (Tcsc) has passed after starting NC control, C
An NC control stop/PC control start pulse (Figure b) is output, stopping the CNC control and restarting the PC control. In PC control, after one cycle of time-sharing processing is completed, P
C control stop/ (:Continues until the NG control start pulse (Figure a) is output.Hereafter, for each time division processing cycle, P
C control stop/CNC control start pulses and CNC control stop/PC control start pulses are output alternately, and CNC control and PC control are performed in a time-sharing manner under the control of CPII (103).

In the above embodiment, the CNC memory and the PC memory are configured as separate memories, but it is also possible to use the same shared memory.

Furthermore, in the above embodiment, an example was shown in which two control processing systems, CNC and PC, are processed in a time-sharing manner, but by increasing the speed of the CPU, it is possible to process three or more control processing systems in a time-sharing manner. is also possible.

〔Effect of the invention〕

As described above, according to the present invention, since a control device having a mechanical control function is equipped with a CPU capable of time-sharing processing of a plurality of types of control programs, there is no need to provide a CPU dedicated to processing each control program. Therefore, it is possible to obtain a multifunctional control device that can execute a plurality of types of control programs with a simple hardware configuration.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of a numerical control device according to an embodiment of the present invention, FIG. 2 is a time chart explaining the operation of this embodiment, and FIG. 3 is a block diagram showing the configuration of a conventional numerical control device. It is a diagram. In the figure, (102) is the control unit, (103) is the CNC
CPII shared by control processing and PC control processing, (104
) is CNC memory, (105) is PC memory.

Claims (1)

[Claims] A numerical control device equipped with a control unit that controls a machine according to a control program, characterized in that the control unit includes a processor that processes multiple types of control programs in a time-sharing manner and controls the machine according to multiple types of control programs. Numerical control device.