JP3355682B2 - Production management device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a production management apparatus for controlling production and equipment in factory automation (FA) and the like.

[0002]

2. Description of the Related Art There is a production system using a production management apparatus as shown in FIG. 1, for example. This system is a cell controller 1 or 2 which is a production management apparatus for totalizing and managing data. And a PLC 4 for controlling the equipment 7 and collecting data, a PLC 5 for controlling the equipment 8 and collecting data and a PLC 6 for controlling the equipment 9 and collecting data.

In this system, a cell controller 1
Collects the production result data of the facilities 7 and 8 from the PLCs 4 and 5 through the network 3, and the cell controller 2 collects the production result data of the facility 9 from the PLC 6. The cell controllers 1 and 2 have data collection tables 12a and 12b that store data to be collected, respectively. The cell controller 2 receives the production result data from the PLC 5 from the cell controller 1, and gives a work instruction to the equipment 9 from this information by the processing of the scheduling program.

Conventionally, in such a production management system, when a failure occurs in the cell controller 1, the collection of production result data from the PLC 5 which has been performed by the cell controller 1 stops, and the production result data of the PLC 5 is transferred to the cell controller 1. The scheduling program of the cell controller 2 which has given the work instruction from the server 1 cannot obtain this data. That is, there is a problem in that stopping of one cell controller stops processing of another cell controller.

[0005]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a production management apparatus utilizing information collected by another production management apparatus, which is stopped even if the other production management apparatus is stopped. An object of the present invention is to provide a production management device that does not stop processing of a production management device using information collected by the production management device.

[0006]

An object of the present invention is to connect a plurality of equipment control devices and other production management devices by a network, collect data from any one of the plurality of equipment control devices, and execute the other production control device. In a production management device that acquires and processes data of the plurality of equipment control devices collected by the management device, a tag name added to each data collected by its own production management device, a collection destination of the data, A data collection table in which information relating to the program is stored, a program use data table for storing a tag name added to each data required as a result of execution of the program by its own production management device, A tag name added to each data collected by the production management device of the present invention and information on a collection destination of the data are stored. And, based on the tag name of the data collection table data acquisition means for the collection table to obtain the program using the stored tag name in the data table of the other production control apparatus of another production control apparatus,
Determination means for determining another production management apparatus that is collecting data required along with execution of a program of its own production management apparatus, and abnormality detection means for detecting an abnormality of the other production management apparatus, When an abnormality is detected in the other production management device determined by the determination unit , information on a data collection destination of the other production management device is added to a data collection table of the own production management device. This is achieved by a production management device characterized in that the own production management device collects data instead of the other production management device.

[0007]

According to the present invention, when a certain production management device is stopped by the means configured as described above, the production management device utilizing the information of the equipment control device collected by the stopped production management device. Since the device can directly collect the information of the equipment control device that was collected by the stopped production management device, even if the production management device collecting the information of the equipment control device stops, This is a production management apparatus that does not stop even the processing of the production management apparatus using the collected information.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a drawing showing an example of a production system using the production management device of the present invention as a cell controller. This system is composed of cell controllers 1 and 2 which are production management devices for totalizing and managing data.
And PLC for controlling equipment 7 and collecting data
4. PLC 5 for controlling equipment 8 and collecting data
PLC for controlling equipment and equipment 9 and collecting data
6 are connected by the network 3.

In this system, the cell controller 1
Collects the production result data of the facilities 7 and 8 from the PLCs 4 and 5 through the network 3, and the cell controller 2 collects the production result data of the facility 9 from the PLC 6. The cell controllers 1 and 2 have data collection tables 12a and 12b that store data to be collected, respectively. Then, the cell controller 1 manages the in-process inventory management in the production system based on the production result data of the facilities 7 and 8 from the PLCs 4 and 5 collected by itself and the production result data of the facility 9 from the PLC 6 collected by the cell controller 2. ,
The cell controller 2 performs production progress management, and the cell controller 2 receives the production result data of the equipment 8 from the PLC 5 collected by the cell controller 1 and controls the equipment 9.
To give a work instruction.

The cell controllers 1 and 2 using the production management apparatus of the present invention prepare a plurality of one-unit basic programs configured to perform a certain basic process.
An information processing apparatus provided with a platform that activates these basic programs in an arbitrary order to perform a predetermined process and performs a predetermined process by an existing program used in arbitrary hardware. FIG. 2 is a block diagram for explaining the configuration of the cell controller.

This cell controller is connected to the network 3
Network interface 10 for connection to
(In the case shown, the interface is abbreviated as I / F), a data collection table 11 that stores what data the production management device collects as a cell controller, information of the data collection table 11 A data collection unit 12 that collects necessary data based on the data, a tag data management unit 13 that assigns tag names to the collected data and manages the data, a tag data storage unit 14 that stores data with tag names, and other components. The cell controller collects
The other data collection unit 15 that collects data with a necessary tag name from the data to which the tag name has been added, in order to know what kind of data the other cell controller is collecting, Another data collection table copy unit 16, which copies a data collection table in the controller,
The other data collection table 17, which stores the data collection table of another cell controller copied by the other data collection table copy unit 16, compares the other data collection table 17 with a program use data table 36, which will be described later, and makes a backup. A backup data collection table creator 18 and a backup data collection table creator 1 for creating a data collection table that must be collected
8, a backup data collection table 19, and another data collection process check unit 2 that monitors whether another cell controller is collecting data normally.
0, the data collection table change processing unit 21 that switches so that necessary data is directly collected when another cell controller is not normally collecting data, and the processing procedure of production management performed in this cell controller. Described program 35 and this program 35
Is composed of a program use data table 36 storing data required for processing and a system configuration table 37 storing the configuration of the entire system connected by a network. The data collection table 12
Is a data collection table 12a or 12b in the production system shown in FIG.

Hereinafter, the operation of the main part of the cell controller configured as described above will be described.

The data collection table 11 stores what data is directly collected from the PLC as a cell controller. For example, as shown in FIG. 3A, a tag name assigned to the collected data, Previous PL
A node address for specifying C, a memory address for storing the collected data, a data type indicating the type of data to be collected, and the like are stored.
The information stored in 1 is data to be collected.

[0015] Data required for processing, along with the execution of the program 35, based on the required tag name, or tag data management unit 13 is in a tag data storage unit 14 in the own cell controller, other Is determined in the tag data storage unit in the cell controller . Therefore, the tag
The data management unit 13 performs its own production based on the tag name.
Required for execution of management device programs
Discriminating to determine which other production management device is collecting data
Functions as a means. Data required for processing, when in the tag data storage section in the other cell controllers, other de
The data collection unit 15 collects data from another cell controller via the network interface 10. Incidentally, by all the data tag names required by flop <br/> program 35, it is stored in the program using the data table 36, for example, as shown in FIG. 3b, the program uses data
The table 36 stores necessary tag names.

The other data collection table copy unit 16 and the other data collection table 17 are for knowing what data is being collected by another cell controller . Cell controller data
The data collection table is copied. Accordingly
The other data collection table copy unit 16 and the other data
The collection table 17 is a data collection table of another production management device.
It functions as an acquisition means for acquiring a cable. In comparing this other data collection table 17 and program use data tables Accordingly, among the data the program 35 to perform the processing required, the data can know the other cell controller is collecting, the backup data collection The table creation unit 18 stores data collected by another cell controller among the data required by the program 35 in the backup data collection table 19. As shown in FIG. 3C, for example, as shown in FIG. 3C, the backup data collection table 19 includes a number of another cell controller, a tag name to be added to data to be collected, a node address for specifying a collection destination PLC, and a memory for storing collected data. An address and a data type indicating the type of data to be collected are stored. The items other than the numbers of the other cell controllers are the same as those in the data collection table 11.

The other data collection process check unit 20
By referring to the cell controller number in the backup data collection table 19, it is determined which cell controller is collecting data required by another cell controller from the necessary data, and the cell controller operates normally. was and whether the monitored via the network interface, carried out by detecting a etc. signal indicating a normal operation of the cell controller in the network is out.

When the other data collection process check unit 20 determines that there is an abnormality in the data collection of another cell controller, the data collection table change processing unit 21 reads the abnormal cell controller number from the backup data collection table 19. Of the collected data, the cell controller number is deleted from the items of the collected data, and the data is written into the data collection table 11. As described above, when an abnormality occurs in data collection of another cell controller, the data collected by the own cell controller is stored in the data collection table 11 as data to be collected by the own cell controller. The processing can be continued without any trouble.

Next, the operation of the above-described cell controller using the production management device of the present invention will be described. FIG.
5 is a flowchart for explaining the operation of the cell controller.

First, when the activation of the system is started, the other data collection table copying unit 16 copies the data collection table of another cell controller and creates another data collection table 17 (S1). Next, the program use data table 36 and the other data collection table 17 are compared to detect data collected by another cell controller among the data used for processing, and the backup data collection table 19 is created ( S2). Then, data collection as a cell controller is started (S3).
Next, the data collection process of another cell controller is checked (S4).
5) The data collected by the abnormal cell controller is read from the backup data collection table 19 (S6), and is additionally registered in the data collection table 11 as data to be collected by the next cell controller (S6).
7).

As a result, even if the data collection by another cell controller is stopped due to the abnormality of the cell controller, the data required by itself can be directly collected. Processing continues as is.

[0022]

As described above, according to the production management apparatus of the present invention, information collected by another production management apparatus connected by a network can be directly collected instead of the production management apparatus. As a result, even if an error occurs in another production management device and data collection stops, the stopped data collection can be collected instead of the production management device in which the error occurred. It is possible to prevent even the production management device that has been performing processing by sharing the data collected by the device from stopping.

[Brief description of the drawings]

FIG. 1 is a block diagram for explaining a production system.

FIG. 2 is a block diagram for explaining a cell controller using the production management device of the present invention.

FIG. 3 is an example of a table used in the present invention.

FIG. 4 is a flowchart for explaining the operation of a cell controller using the production management device of the present invention.

[Explanation of symbols]

10 network interface, 11 data collection table, 12 data collection unit,
13: Tag data management unit, 14: Tag data storage unit, 15: Other data collection unit, 1
6: Other data collection table copy unit, 17: Other data collection table, 18: Backup data collection table creation unit, 19: Backup data collection table,
20: Other data collection process check unit, 21: Data collection table change processing unit, 35: Program, 3
6. Program use data table.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) G05B 19/418 B23Q 41/00 G05B 15/02 G06F 17/60

Claims (1)

(57) [Claims] An apparatus is connected to a plurality of equipment control devices and another production management device via a network to collect data from any of the plurality of equipment control devices and to collect the data collected by the other production management device. In a production management device that acquires and processes data of an equipment control device, a data collection in which a tag name added to each data collected by its own production management device and information on a collection destination of the data are stored. A table, a program use data table for storing tag names added to respective data required as the program is executed by the own production management device, and collected by the other production management device. A data of another production management device in which a tag name added to each data and information on a collection destination of the data are stored. Acquisition means for acquiring a collection table, and execution of the program of the own production management device based on the tag name stored in the program usage data table and the tag name of the data collection table of the another production management device. a discriminating means for discriminating another production management system that collects data required, and the abnormality detecting means for detecting an abnormality of the other production control apparatus, the Te, judged by the judging means When an abnormality is detected in the other production management device, information about the data collection destination of the other production management device is added to the data collection table of the own production management device, thereby replacing the other production management device. Wherein said own production management device collects data.