JPS62150438A - Program protect device for control equipment - Google Patents

Abstract

PURPOSE:To block the program change of a change inhibition area due to careless operation by providing a protect flag to divide a program content requiring change frequency and program content not changed. CONSTITUTION:A CPU 18 applies drive control to a drive circuit 21 and a comparison circuit 20 based on the input from a step advancing circuit 19 and a comparison circuit 20 by the operation of a start switch 40. The drive circuit 21 forwards/backwards a work through a reversible motor 22 and a screw 23. The position of the work 24 is detected by a rotary encoder 25. The detec tion output is fed back to the comparison circuit 20 as a present value via a position detection circuit 26. The CPU 18 discriminates the presence of the protect at each set content and inhibits the revision of the set content of a protect flag 17 based on the result of discrimination.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of the Invention The present invention provides, for example, an NC control l1
The present invention relates to a program protection device for a control device that has a program setting section, such as a positioning counter for a device or a robot arm, and is capable of setting a plurality of settings.

(B) Items of the Invention Conventionally, as a program protection device for the above-mentioned control equipment, there are, for example, the following devices.

In particular, there is a numeric keypad J3 and various function keys as program setting means for setting a plurality of setting contents, a ROM as a program storage means for storing the setting contents from each of these 1-, and when storing with this ROM. A CPU as a control means that determines the presence or absence of protection and prohibits storage of new settings when protection is present.
This device is equipped with the above-mentioned manual key switching to select protection enable/disable, or cancels the above-mentioned protection by keying in a code.

However, in the conventional program protection device γ1 described above, depending on whether program protection is enabled or disabled, it is either impossible to change the contents of the entire program at all, or it is possible to change the contents of the entire program! There are some problems like the following.

In other words, 1 for NC control equipment in machine tools, etc. j
In standard control devices, it is usually necessary to frequently change a specific program part of the entire program, but in the case of conventional block 1 program protection devices, it is necessary to manually operate the key to release the protection when making the above changes. Since all program contents can be changed, the contents of other program areas that cannot be changed due to careless or erroneous operation are also updated, eliminating the problem of abnormal operation of the control b1 unit. Ta.

(C) Purpose of the Invention This invention sets a protection flag for each program setting content as necessary to distinguish between program content that is normally frequently changed and program content that cannot be changed, and to protect the content. Program content can be changed on the fly, and programs in the change-prohibited area can be prevented from being changed due to careless operations, which can prevent abnormal operation of control equipment. The purpose of this invention is to provide a program protection device for a monkey controller 3.

(D) Summary of the Invention This invention sets whether to protect each setting content, sets a protect flag for the setting content that needs to be protected, and determines whether each setting content is protected. The present invention is characterized in that it is a program protection device for a control device, which is provided with a determination means and a control means for prohibiting updating of setting contents with a protect flag based on the determination result of the protection determination means.

(E) Effects of the Invention According to the present invention, a protect flag is set for each setting content angle as necessary, so that depending on the presence or absence of this protect flag, program content that normally requires frequent changes and program content that cannot be changed can be distinguished. The program content without a protect flag can be easily changed because it has never been inhibited by the above control means, and the program content with a protect flag can be easily changed by the above control means. Since it is prohibited, it cannot be changed.

As a result, the above-mentioned control means can prevent program changes in the change-prohibited area due to careless operations.
This has the effect of preventing the occurrence of abnormal operation of the control equipment.

(f) Examples of the invention An embodiment of the present invention will be described in detail below based on the drawings.

The drawing shows the program protection device of control liz,
In FIG. 1, the program hub 1 is equipped with a first setting unit 1, a second setting unit 1-2, and a separate main body 3.

The first switching unit 1-1 of J=, 'rL has a large number of switches 4 on its front surface for setting a program for setting a plurality of setting contents and for issuing commands to control equipment.
The control unit is fully equipped with an operating section 5 having a .

Furthermore, a cartridge connector 9 for connecting the memory cartridge 8 is provided on the front side of the first setting unit 1, and a first connector (not shown) is provided on the back side. is forming.

The first retting unit 1 is configured to be detachable from the front opening of the device body 3 using set bolts 12 and 12.

The above-mentioned second setting unit 2 has on its front side,
There is an operation section 5a that controls a small number of switches 4a for program settings that set a small number of settings, and a small number of switches 4a for commands to the control device, It is equipped with a small number of display devices and a display section 7a on the right, and is formed to a specific specification.

Further, a cartridge connector (not shown) for connecting the memory cartridge 8 is disposed on the inner surface of the opening/closing lid 10 on the front side of the second setting unit 2, and a first connector is disposed on the back side. (U in the figure) is formed.

Therefore, this second setting unit 2 is configured to be able to be removed by means of a set bolt 12, 12 in the front opening of the device main body 3 mentioned above.

That is, the above-mentioned first and second setting units 1.2 are configured to be selectively attached to the front opening of the main body 3 of the device.

The device main body 3 described above has a control section 3a (see FIG. 2) that performs control based on a set program, and the above-mentioned first control section 3a is provided on the front side of the device main body 3 as shown in FIG. A second connector 13 directly connected to the connector and a screw seat 14.14 into which the set bolt 12.12 of the front) E is screwed are formed, and the back side is connected to the above-mentioned first connector via an external connection line. A third connector (not shown) is formed.

FIG. 2 shows a control circuit of the above-mentioned program protect device, in which the first setting unit 1 which is alternatively connected to the device body 3 is connected to the second setting unit 2.
A block 1 for temporarily storing the setting contents from the operation units 5 and 5a as the program setting means described above; When the ROM is loaded, a product flag 17 attached to the ROM and a CPU 18 as a control means which determines the presence or absence of a block text when writing to the ROM and prohibits storage of new setting contents when a product is present. It is equipped with

This CPLJ 18 drives and controls the drive circuit 21 and the above-mentioned comparison circuit 20 in accordance with the program stored in the ROM based on inputs from the next step step forward circuit 19 and the comparison circuit 20 based on the operation of the start switch 40. However, the above-mentioned drive circuit 21 moves the workpiece 24 forward through a reversibly rotatable motor such as a servo motor 22 and a screw 23, and then moves the workpiece 24 forward by 5 rA, and the position of the workpiece 24 is detected by a rotary encoder 25. This detection output is fed back as a current value to the above-mentioned comparison circuit 20 via the position detection circuit 26.

Here, the CPU 18 described above sets whether or not to protect each setting content, sets the protect flag 17 to the setting content that needs to be protected, and determines whether or not each setting content is protected. This prochiku 1-
Based on the determination result, updating of the settings with the protect flag 17 is prohibited.

The above-mentioned protection flag determination process is as shown in FIG.

That is, in the first step 21, when the setting area number and the new setting value are keyed in, in the second step 22, the CP
The U18 reads the protect flag 17 in the setting area, and when the CPtJ 18 determines in the next third step 23 that the protect flag 17 is present in the setting area, it moves to the next fourth step 24, and this fourth step At 24, C
The CPU 18 prohibits new setting values from being set in the ROM, and if the CPU 18 determines in the above-mentioned third step 23 that there is no protect flag 17 in the setting area, it executes the next fifth step. At step 25, the CPU 18 updates the new settings in the ROM.

The above-mentioned processing for determining the J text flag is carried out for each set of blocks, and its configuration is shown in FIG.

The operation of the control device program hub 1 configured as follows will be explained based on FIG. 2.

4r, in the figure, positions A, B, and C indicate the wear (OFt) of the workpiece 24, and in this embodiment, the positions △, B, and
Among C, positions △ and C cannot be changed, and (◇) B is assumed to be frequently required to be changed during normal operation.

Furthermore, for convenience of explanation, it is assumed that the ROM is in an all-clear state as an initial state.

First, the first setting unit 1 sets target stop positions A, B, and C of the workpiece 24.

That is, as shown in FIG. 1, if you press the step key 41 of the sizing operation section 5, then set the step number with the numeric keys 42, and then press the write V-43, the program area corresponding to the step number will be changes are specified.

Next, press the target value key 44, then set the stop target device to the number 112 you set in 42..., press the old key 43, and set the program to the 1 gram area corresponding to the step NO. Setting details are specified.

Next, when you want to program the specified step mentioned above, press the protect key 45 and then press the write key 43. This specified step will be protected by the protect flag 17, and press the encryption key ( Key press operation by combination of the above-mentioned number keys 42...)
Unless you do so, you will not be able to change the settings.

If you do not want to protect, press the step key 41 and perform the setting operations in sequence according to the above-mentioned procedure.

The program setting contents set in this way are stored in the ROM.
The settings are then memorized as shown in FIG. 4, completing a series of settings.

That is, in this embodiment, protection is performed at positions A and C in FIG. 2, and no protection is performed at position fi'ffB.

Next, the operation key 46 is pressed to put the device main body 3 into operation mode.

In this operation mode, each time the start switch 40 is pressed, the workpiece 24 moves sequentially to preset stop positions A, B, and C.
Step N.

Execute in order.

Now, as shown in Figure 4, program setting contents 1 of Step 1
Place the hani at position A, and set the program setting contents 2 at step 2 to position i? Set the value of 7B to the program setting contents 3 of step 3.
If the values of position C are set respectively in
, A, B, C... without repeating the decision.

By the way, in the second setting unit 2 described above, in order to change the value of taB, which is frequently requested during normal operation, the step key 41a of the operating section 5a shown in FIG. When the mountain key 43a is pressed after pressing the number of times, the change of the program area corresponding to program setting content 2 in FIG. 4 is designated.

Next, press the left shift key 44 La or the right shift key 44 Ra as a target value key, set the stop target position with the σ record key 42a having a teaching input tlA function, and then press the write key 43a to perform the above-mentioned program setting. The setting content of the program area corresponding to content 2, that is, the stopping position of the workpiece 24 corresponding to position B can be easily changed.

In short, regarding the program setting content 2 mentioned above, at the time of initial setting, the protect flag 17 is set to J and (j is not set, so the prohibition of updating of the setting content by the CPU 18 does not work, so the content of the ROM is set. Changes can be made to the inside (2).

By the way, even if you accidentally try to change the program contents that correspond to the positions δ△ and C mentioned above,
As for the program setting contents 1 and 3 corresponding to , they are protected by protect flag 17 at the time of initial setting, so updating of the setting contents by the CPU 18 is prohibited, and it is necessary to change the contents of the ROM in the second set. This would be difficult to do with the ting unit 2.

As a result, the Cr'U 18 prevents the program from being changed in the change-prohibited area due to careless operation, thereby preventing the abnormal operation of the NC11III controller Ia and the like including the workpiece 24.

In addition, in order to perform the above-mentioned operation by setting J to the second setting unit 2, press the operation key 46a shown in FIG. The advantage is the same as described above if the pressing operation is repeated sequentially.

Regarding the correspondence between the structure of the present invention and the above embodiment of the flea, the program setting means of the present invention is the operation section 5 of the embodiment.
Similarly, the storage means corresponds to ROM, the control means corresponds to CPL118, and the protection judgment means corresponds to CPUI A, but the present invention is limited only to the configuration of the above-mentioned embodiment. It is not something that will be done.

Further, as shown in the above-described embodiment, the first setting unit 1 is selectively attachable to and detachable from the device main body 3.
and second setting unit 2 are installed,
When setting a program for a high school student, the first setting unit 1 can be installed in the main body of the device to set a highly functional and multifunctional program. When doing so, the second setting unit 2 can be attached to the main body 3 of the device to make it a specific dedicated machine, which simplifies operation and prevents erroneous operation when used in the field. This has the effect of making it possible to achieve one goal.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, FIG. 1 is an exploded perspective view showing the program block [ ] protection device line of the controller III, FIG. 2 is a control circuit block diagram, and FIG. 3 is a protect device line. Figure 4 is a program configuration diagram that does not show the flag discrimination process. 5.5a...Operation unit...ROM17...
・Protect flag 18...CPU Fig. 3 Protect external nobu/l fl ylx' g 1 shown T70-
H, -) Fig. 4, 7, Logura Otsuho 1 and Illustrated Procedures, 11 Masashi (Voluntary) March 26, 1985 Tokumu] Director-General of the Agency Uenmasa Shubu Tonoguchi 1 Indication of the Case 1985 Patent Application No. 296439 @ 2 Name of the invention Control equipment program program [1 Tect device Representative Takao Tateishi Showa Year, month, day 7 Subject of amendment (1) Detailed explanation column of the invention in the specification (2) Brief description of the drawings of the store Explanation column (3) Figure 2, Figure 8 Contents of correction (1) Add 1 to [RAMJ] of rllOMJ in page 2, line 14, line 1 and line 15 of detail t4. Correct the following points in the same way. Page 8, line 7, line 8, line 10, and line 10, line 1, line 5 [1 and ? Line 5, page 11, line 20, page 13, line 17, page 14, line 5, line 2 of page 15, line 7 of page 2 (2) Figure 2 Correct as shown in the attached sheet. 9 List of attachments

Claims (1)

[Claims] 1. Program setting means for setting a plurality of setting contents;
A control device comprising a storage means for storing setting contents from the program setting means, and a control means for determining whether or not protection is provided during storage by the storage means, and prohibiting storage of new setting contents when protection is provided. The program protection device includes a protection determination means for setting whether or not to protect each setting content, setting a protect flag for setting content that requires protection, and determining whether each setting content amount is protected. A program protection device for a control device, comprising: a control means for prohibiting updating of setting contents having a protect flag based on a determination result of the protection determination means.