JP2998411B2 - Data management device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for modifying an arbitrary information on a lower computer, the same information stored in the upper computer as necessary. The present invention relates to a data management device capable of automatically updating and storing information after modification.

[0002]

2. Description of the Related Art Generally, a programmable controller (hereinafter, referred to as a PC) controls various production facilities in a factory.
It is done by. If many PCs performing the same work are provided in one stage,
Usually, these PCs are connected to a workstation in consideration of ease of control and the like so that collective information collection and control can be performed.

[0003]

In such a conventional data management apparatus, information can be collected from all PCs to which a workstation is connected.
With respect to specific information (for example, information relating to production results) in the storage means on the workstation side, it is possible to make the determination that data from the register R10 of the specific PC should be fetched one by one.

That is, in a conventional data management device, a PC
On the side, only a series of programs related to the operation of the PC is stored, and on the workstation side, only the specific register No. for collecting information necessary for management of the PC is stored.

More specifically, the contents as shown in FIG. 5 are stored in the workstation 1. That is, JISSEKI, ZAIKO, KE
IKAKU is stored, and P of each <node NO> 1 is stored.
<Register NO> R10, <Register NO> R2 of C
0, <Register NO> The data from R30 is
Capture timing> Data is captured at the time described in <1.

On the other hand, only data necessary for operating the PC is stored in the PC, and a table such as that stored in the workstation shown in FIG. 5 is not prepared.

In the data management device having such a configuration, for example, when a program is modified on the PC side, the workstation side is modified after the modification so that consistency between the workstation side and the PC side is maintained. This information needs to be prepared by humans in accordance with this correction.

That is, for example, it is assumed that tag information of a connected PC is stored on the workstation side, and tag information and ladder information dedicated to operating the PC are stored on each PC side. I do. Under this assumption, if the tag information is corrected by changing the program of a certain PC, the information on the PC will be changed by this correction, but the tag information on the workstation will be automatically changed. Not changed. For this reason, this correction must be manually input on the workstation side based on the change list of the tag information.

In the above-described example, when the production number is counted by the register R10 on the PC side, the same production number is counted for the convenience of the sensor. However, it is changed to use the register R40. Suppose that is done. In such a case, since the PC has changed the program on the PC side, the operation on the PC side proceeds according to the changed program. On the other hand, since the workstation cannot recognize that such a change has occurred, in the example of FIG. 5, the register NO relating to JIS SEKI is changed from R10 to R4.
It has to be manually changed to zero.
Note that the above tag information is specifically the above JISSEK
In addition to I, information indicating processing contents such as “work stop” and “abnormality occurrence” also applies.

In the above-described change, it is necessary to take care not to make duplicate settings on the PC side while referring to the list of tag information set on the workstation side. Therefore, the change takes a very long time. In addition, P
If the tag information is changed only on the C side and the setting of the tag information on the workstation side is not changed, a problem such as the inability to perform predetermined production management occurs.

The present invention has been made in view of the above-described conventional problems. When a change is performed on the PC, the change is automatically reflected on the workstation. It is an object of the present invention to provide a data management device adapted to be used.

According to the present invention for achieving the above object, a series of programs related to the operation of the lower side is stored in the lower side, and the lower side stores lower side management information for collecting information necessary for the lower side management . stored, the data management so as to gather specific information of a lower side on the basis of the lower-side management information
A first device for storing lower-level management information on a lower side;
From the storage means and from the lower first storage means on the lower side
An information input means for inputting a lower management information, and a correcting means for applying a correction to the lower side management information input from the information input means, the lower management information after correction by said correction means is input from the information input unit underlying a storage control means for replacing the lower side management information is stored in the first storage unit
The lower-level management information of the higher-level
1 storing the same lower-level management information as that of the first storage means.
2 storage means, and when the correction is made by the correction means, the same lower-level management as the first storage means before the correction.
Second storage means of the lower side management the information to be replaced with lower management information corrected second storage means correction control means and is higher to be stored in the information is stored as information of the upper
A data management device provided on the side.

[0013]

According to the present invention constructed as described above, the correction
Modified by columnLower management information
Is input from the information input means by the storage control means.under
Site management informationAnd stored in the first storage means.
You. On the other hand, it is stored in the second storage means.Subordinate management information
InformationIs similarly corrected by the correction control means.Subordinate management information
InformationIs stored.

For this reason, the lower part corrected by the correcting means
The local management information is automatically rewritten in all the storage devices, so that work for maintaining consistency with the second storage means accompanying a program change becomes unnecessary, and the change work efficiency is significantly improved. Not only that, it also contributes to improving the reliability of the repair work.

[0015]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram of a data management device according to the present invention, and FIG. 2 is a detailed configuration block diagram of a ladder program management unit shown in FIG.

The workstation 1 and the PC 10 are connected via a network NW. The workstation 1 is provided with a tag information management unit 2 as correction control means for managing tag information for each PC connected thereto. The tag information to be managed here is stored in the storage device 3 of the workstation 1 as a database. This storage device 3 functions as a second storage means, and stores data N as shown in FIG.
O has been entered.

A ladder program management unit 1 is provided in the PC 10.
1, the program is modified and deleted based on a command from the input / output device 20 as a modifying means functioning as a connected terminal. The ladder program management unit 11 functions as information input means, storage control means, and correction control means. In the PC 10, a storage device 12 storing a tag table and a storage device 13 storing a ladder file are provided. These storage devices 12 and 13 are the first
It functions as storage means. Specifically, the tag table stored in the storage device 12 is a table including [tag name], [node NO], [register NO] and the like as shown on the left side of FIG.

The specific configuration of the ladder program management section 11 is as shown in FIG. This management unit 11
The core of the control is the tag / ladder control unit 30. The tag / ladder control unit 30 is provided in the storage devices 12 and 13
If it functions as inputting information from the tag table or the ladder table, it will operate as information input means, and replace the information after the below-mentioned correction with the information input from each of the above tables. When it functions as a storage in these tables, it operates as a storage control means. Further, when the information after the above-mentioned correction is reflected in the tag information of the workstation 1, it operates as a correction control means. Operate.

The upper interface 31 controls communication between the workstation 1 and the tag / ladder control unit 30 via the network NW. The tag table management unit 32 sends tag information, which is physical data stored in the tag table of the storage device 12, to the tag / ladder control unit 30, or conversely, sends the tag information generated by the tag / ladder control unit 30 to the tag table. It has a function of storing the information in a memory. The ladder file management unit 33 sends ladder information, which is logical data stored in the ladder file stored in the storage device 13, to the tag / ladder control unit 30. The ladder information is stored in a ladder file. The storage device 14 stores a message file that realizes an interactive operation in the operation of the input / output device 20. The input data control unit 34 is the input / output device 20
Controls the input data to be output to the tag / ladder control unit 30 by the operation of The display control unit 35 is a unit that performs control for displaying information from the ladder file management unit 33 and the like on the input / output device 20 according to a command from the tag / ladder control unit 30.

The data management apparatus of the present invention having the above-described configuration performs the following processing in accordance with the flowchart shown in FIG. 3 and performs automatic rewriting of changed information.

First, the ladder program management unit 11
Then, tag information relating to the PC 10 related to the workstation 1 is input via the upper interface 31. Here, in the present embodiment, the tag information is input from the workstation, but this may be manually set on the PC side. That is,
It is only necessary that the tag information on the workstation side and the tag information on the PC side match. Upon this input, the tag information management unit 2 of the workstation 1 extracts the tag information unique to the PC 10 from the storage device 3 and the tag information is taken into the tag / ladder control unit 30. Specifically, the tag information includes [tag name], as shown in FIG.
It consists of [register NO], [size], etc. (S1). When the tag information is downloaded, the tag ladder control unit 30 rewrites the tag table to the latest downloaded tag table (S2). When a display instruction of a program is issued in the input / output device 20, the display control unit 35 receives this instruction and instructs the ladder file management unit 33 to load a ladder file. In response to this command, the ladder file management unit 33 inputs predetermined ladder information from the ladder file stored in the storage device 13 and sends it to the display control unit 35 to display the ladder diagram on the screen of the input / output device 20. . Further, the tag table management unit 32 inputs predetermined tag information from the tag table stored in the storage device 12 and sends it to the display control unit 35 to superimpose the tag information on the screen of the input / output device 20 in a ladder diagram. To display. As a result, a ladder circuit diagram as shown in FIG. 4B is displayed on the screen of the input / output device 20.

In this state, when the ladder program is modified by the input / output device 20, the tag / ladder control unit 30 registers the changed / added tag information in the tag table in the tag table management unit 32. It outputs an instruction to perform a search process to determine whether or not the search has been completed. Due to this modification, the screen displayed in FIG.
(In the case of the example, the tag JISSEKI is set to NGSUU and the register R
20 to R50). In response to this command, the tag table management unit 32 searches the register NO stored in the tag table, and performs a search process to determine whether the register to be registered has been registered (S3, S4). As a result, if the ladder information has not been registered, the ladder file management unit 33 updates and stores the ladder information with the corrected ladder information as new ladder information (S5, S6). On the other hand, if registered, the tag / ladder control unit 30 outputs to the display control unit 35 a command to display the registered tag name and register NO on the screen of the input / output device 20, and at the same time, a message An appropriate message is extracted from the file, and similarly, a command to display the message on the screen of the input / output device 20 is output to the display control unit 35. The display control unit 35 displays the registered tag name and the register number together with a message on the screen, and notifies the operator that the tag or the register to be corrected or the like has been registered. The screen display for notifying this is, for example, as shown in FIG. 4D (S7).

If this message is not followed, that is, if the rewriting of the tag information of the workstation is not performed in an interlocked manner, the ladder file management unit 33 uses the corrected ladder information as new ladder file. Is updated and stored (S8, S6). On the other hand, when following this message, the ladder file management unit 33
Updates and stores the modified ladder information in the ladder file as new ladder information, and at the same time, the tag / ladder control unit 30 transmits the register NO before the change and the register NO after the change via the upper interface 31. This is sent to the tag management unit 2 of the workstation 1. Upon receiving this information, the tag management unit 2 rewrites the currently held tag information with the corrected information. The information after this rewriting is shown in FIG.
(S9, S10).

By the rewriting, in the next download, the rewritten tag information is stored in the tag table. Therefore, the input / output device 2
The tag information stored in the workstation can be referred to by using “0”. This makes the ladder change operation very easy. Further, when an abnormality occurs, information on the workstation can be referred to while investigating on the PC side, so that the cause of the failure can be easily identified. Further, when a changed program is loaded, a message is displayed to warn the user, so that the occurrence of a bug can be suppressed, and the reliability of the management device can be maintained. Further, in the data management device of the present embodiment, the tag information corrected by the input / output device 20 is automatically rewritten according to the instruction of the operator. It is not necessary to change the tag information in. Further, since the change does not require human intervention, no problem occurs in the reliability of the tag information after the change.

Further, in this embodiment, since the tag table is provided on the PC side, the related registers on the workstation can be simultaneously displayed on the input / output device 20 when the ladder is changed. It will be easier.

[0026]

As described above, according to the present invention, the lower management information corrected by the correction means is automatically rewritten in all storage devices.
The work for maintaining consistency with the second storage means accompanying the program change becomes unnecessary, and the change work efficiency is remarkably improved. Further, the reliability of the repair work is improved.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a data management device according to the present invention.

FIG. 2 is a detailed configuration block diagram of a ladder program management unit shown in FIG. 1;

FIG. 3 is an operation flowchart of the data management device according to the present invention.

FIG. 4 is a diagram provided for explanation of a flowchart in FIG. 3;

FIG. 5 is a diagram illustrating an example of information stored in a workstation.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 workstation 2 tag management unit 3 storage device (second storage unit) 10 PC 11 ladder program management unit (information input unit, storage control unit, correction control unit) 12 storage unit (first storage unit) 13) Storage device (first storage means) 14 ... Storage device 20 ... Input / output device (correction means)

Continuation of front page (72) Inventor Hiroyuki Inomata 2 Takara-cho, Kanagawa-ku, Yokohama-shi, Kanagawa Prefecture Nissan Motor Co., Ltd. (56) References JP-A-62-264329 (JP, A) JP-A-62-179027 (JP) JP-A-3-216703 (JP, A) JP-A-1-200406 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G06F 9/06, 13/00

Claims (1)

(57) [Claims] 1. A series of programs relating to the operation of the lower-side lower side is stored, and stores the lower management information for collecting information needed to manage the lower side in the upper side, the lower
In a data management device configured to collect specific information on a lower side based on side management information , a first storage unit for storing lower side lower management information , and a first storage unit from the lower first storage unit. Information for entering management information
Substituting the broadcast input means, and correcting means for applying a correction to the lower side management information input from the information input means, and the lower side management information entered the lower management information after correction by said correcting means from said information input means The storage control means for storing the data in the first storage means is provided on the lower side.
The same as the first storage means as the lower management information on the upper side.
When the correction is made by the correction means, the same lower management information as that of the first storage means before the correction is used as the upper information. Lower-level management information of the stored second storage means
Replacing the lower side management information after correcting the distribution and the correction control means for storing in said second memory means is provided on the upper side
A data management device, characterized in that: