JPH0714087A - Method for displaying message in production control display system - Google Patents

Abstract

PURPOSE:To always preferentially display the message of high importance while preventing the message of the high importance from being eliminated. CONSTITUTION:A production control display system is provided with a display device 6 constituted of a dot matrix to display production control information and equipment information on a production line. This display device 6 is constituted so as to display the various kinds of the messages on the basis of a message signal. A code to indicate the importance is added to each message signal, and the message is displayed on the display device 6 preferentially starting from the message based on the message signal of the highest importance.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a message display method in a production management display system.

[0002]

2. Description of the Related Art The applicant of the present invention installs a display device in which LEDs are arranged on a display board to form a dot matrix in a factory, and a production target, current results, Proposing a production management display system that conveys various information within the factory by displaying production management information such as downtime and facility information (so-called “Andon” information) regarding the presence or absence of abnormalities in each process of the production line is doing.

This display device can freely display a message via a control personal computer for display.
Further, this production management display system is designed to display various information and messages on a display device based on signals from various facilities in the factory. At this time, the messages displayed on the display device are displayed in the input order of the message signals input by the control personal computer.

[0004]

However, since the messages displayed on the display device are displayed in the order in which the message signals are input to the control personal computer, even if the message is important, another message will be displayed later. When the signal is input to the control personal computer, the previous message is immediately erased and the latter message is displayed on the display device.

For example, when an abnormal signal is input to the control personal computer from the equipment in the factory and a message of the abnormal equipment is displayed on the production control panel, and at the same time, a message signal regarding a completely different production schedule is input to the control personal computer,
The message of the facility abnormality is erased, and the display device displays a message regarding the production schedule.
Therefore, the equipment abnormality message is displayed on the display device for an extremely short time, and there is a problem that the operator overlooks the equipment abnormality message.

The present invention has been made to solve the above problems, and an object thereof is to always preferentially display a highly important message without erasing the highly important message. It is to provide a method of displaying a message in a production management system that can be used.

[0007]

In order to achieve the above object, the present invention provides various messages based on message signals to a display device composed of a dot matrix for displaying production control information and facility information on a production line. In the message display method in the production control display system, the code indicating the importance is added to each message signal, the message signal having the highest importance is selected, and the message is preferentially displayed on the display device. The point is that the display is made.

[0008]

Therefore, according to the present invention, the most important message is preferentially displayed on the display device. For this reason,
Even if a message of low importance is newly input while a message of high importance is displayed on the display device,
Highly important messages are never erased.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment embodying the present invention will now be described with reference to FIGS.
It will be described with reference to FIG. FIG. 1 shows a production management system in a factory using a display device for displaying production management information and facility information and a control personal computer for display.
FIG. 2 shows an electric block diagram of the control personal computer.

The production management display system is composed of a first display system 2 connected by a first network 1 and a second display system 4 connected by a second network 3. The second network 3 uses Ethernet, which is a local area network (LAN), as a transmission medium. First network 1
And the second network 3 are connected via a gateway 5. The first display system 2 is a system that is installed in a factory and displays production management information and facility information on a display device 6 installed for each production line.
The second display system 4 is provided in a management office remote from the factory so that production management information and facility information can be centrally managed, and data can be exchanged with each other via the first display system 2 and the gateway 5. It has become.

The first network 1 includes a programmable controller 7, a display control personal computer (hereinafter referred to as a control personal computer) 8, and a factory side operation management personal computer (hereinafter referred to as a factory side management personal computer) 9. It is connected. The display device 6 is connected to the control personal computer 8.

The second network 3 includes a management office-side management personal computer (hereinafter, management office-side management personal computer) 10 and an operation status data server 11.
And are connected.

First, the display device 6 provided for each production line will be described with reference to FIG. The display device 6 is provided with a display unit 13 in which LEDs of two colors, red and green, are arranged on a display board 12 to form a dot matrix. And the production target is displayed on the display unit 13.
Production management information such as the current record and downtime, and information regarding the presence / absence of abnormality in each process of the production line (so-called "Andon" information)) and the like are displayed. The display format of the display unit 13 includes a "goal" display unit 14 and a "result" display unit 1
5, a "stop" display unit 16, an "overtime" display unit 17, and a "message" display unit 18 are provided.

The "goal" display section 14 is provided with a "today" display section 14a and a "current" display section 14b. The "today" display portion 14a displays the target number of vehicles to be achieved today on the production line. Further, the "current" display portion 14b is adapted to display the current target number indicating how many are currently in production in order to achieve the target number for today. These "today" display portion 14a and "current" display portion 1
Each target number displayed on 4b is input from the management computer 9 on the factory side.

The "actual result" display section 15 is adapted to display the number of units produced by the production line operating up to now. The number of units produced is displayed based on an operation result data signal, which will be described later, output from the programmable controller 7 on the first network 1.

The "stop" display section 16 is adapted to display how long the production line has stopped up to the present. The "stop" display unit 16 is displayed based on a data signal of a stop time, which will be described later, output from the programmable controller 7 on the first network 1.

The "overtime" display portion 17 is a portion for displaying today's overtime hours, and is input by the operator from the factory management PC 9. "Message" display 1
8 displays various messages to be notified to workers engaged on the production line.

In FIG. 1, the programmable controller 7 is connected to the equipment M provided in each process of the production line through a signal line, controls each equipment M, and outputs an abnormal signal provided in each process. An abnormal signal from the output section is input. The abnormality signal output unit is an abnormality detector provided in each equipment M, a maintenance timing indicator provided in each equipment M, a push button switch 19 used when a worker needs assistance, etc. Is a general term for devices that output a signal indicating that they are in a different state.

The programmable controller 7 converts the input abnormal signal into data (encodes) according to its type,
The data is stored in a storage device (not shown) built in the programmable controller 7 and is output as a data signal on the first network 1. This data signal is an important message signal for displaying, as a message, facility information indicating the type of abnormality and a coping method etc. on the "message" display section 18 of the display device 6 installed in the factory via the control personal computer 8. (For example, a signal for displaying "please replenish parts.").

A code for indicating the importance of the message is added to the important message signal. That is, in this embodiment, the code for indicating the degree of importance of the message is represented by 2 bits, and the code added to the important message signal is represented by "0, 1".

The storage device has a capacity capable of accumulating operation history data for one day of the production line, and the operation history data on the day of the production line is sequentially stored. The programmable controller 7 calculates the operation record and stop time of the production line based on the operation history data stored in the storage device, and outputs it as a data signal of the operation record and stop time on the first network 1.

The factory-side management personal computer 9 can confirm the data signals output on the first network 1 such as the operation results and the stop time by the operator operating the factory-side management personal computer 9. Further, the factory management PC 9 can output various production management information on the first network 1,
The production control information is displayed on the display device 6.

Further, the operator operates the factory management personal computer 9 to display a message to be directly transmitted to the operator via the control personal computer 8 on the "message" display section 18 of the display device 6. Is output. This message signal is classified into two types according to the importance, and a normal message signal of low importance (for example, a signal to display "A gathering will be held from 3 o'clock today.") And an importance message High emergency message signal (eg "Stop the line immediately."
And a signal for displaying).

A code for indicating the degree of importance is added to each message signal as in the case of the important message signal. In this embodiment, the code for indicating the normal message signal is represented by "0,0", and the code for indicating the emergency message signal is "1,0".
Is represented by.

That is, in this embodiment, three types of normal message signal, important message signal, and emergency message signal are prepared in the order of decreasing importance, and they are identified by a 2-bit code. The management office side management personal computer 10 allows the operator to send data signals such as the operation results and the stop time output on all the first networks 1 connected to the second network 3 to the management office side management personal computer 10. It can be confirmed by operating. That is, it is possible to check the operation records and downtime of all the production lines in the factory from the management office by the management office management PC 10.

Further, the management personal computer 10 on the management office side is connected to the management personal computer 9 on the factory side via the second network 3 on the first network introduced to the desired production line.
Similarly, various data, normal message signals, emergency messages, etc. can be output.

The operation status data server 11 is adapted to store the operation history data stored in the storage device of the programmable controller 7. As shown in FIG. 2, the control personal computer 8 includes a CPU (central processing unit) 20,
ROM 21 and CPU 20 storing a control program
The RAM 22 is configured to temporarily store the calculation result and the like. A programmable controller 7 and a factory-side management personal computer 9 are connected to the CPU 20 via the first network 1. Furthermore, the CPU 20
A management office management PC 10 is connected via a second network 3, a gateway 5 and a first network 1. A display device 6 is connected to the output side of the CPU 20, and the CPU 20 performs various displays on the display device 6 based on various signals such as message signals output on the first network 1. That is, CPU
Reference numeral 20 indicates the target number of units to be achieved today on the production line on the "today" display portion 14a of the "target" display portion 14 based on the production management information. Further, the CPU 20 is adapted to display the current target number indicating on the "current" display section 14b based on the production control information, the current target number indicating how many vehicles must be currently manufactured in order to achieve the target number for today. There is.

The CPU 20 displays the number of units produced by the production line operating up to now on the "actual result" display section 15 based on the production management information. CPU20
On the basis of the production management information, the "stop" display section 16 displays how long the production line has stopped until now. The CPU 20 displays today's overtime hours on the "overtime" display section 17 based on the production management information.

Further, the CPU 20 displays the programmable controller 7, the management personal computers 8 and 9 on the factory side and the management office side in the "message" display section 18 based on the production management information.
Various messages are displayed based on various message signals from. Also, the control personal computer 7 sends a "message" when there are no various message signals.
The time is displayed on the display unit 18 (see FIG. 4).
reference).

RAM provided in the control personal computer 8
In 22, a message signal to be displayed on the “message” display portion 18 of the display device 6 is stored. Also, RA
M23 is provided with flags (normal flag, important flag, and emergency flag) indicating the importance of the message signal input to the CPU 20.

Further, the CPU 20 determines whether the message signal is usually important or urgent based on the code indicating the degree of importance added to the input message signal.
Then, based on the determination result, the CPU 20 usually sets an important or urgent flag (from "0" to "1").
It is like this.

Further, the CPU 20 determines the order of the messages to be displayed on the "message" display section 18 of the display device 6 based on each flag. That is, the "message" display section 18 displays the messages in order from the most important message. For example, when the normal message signal, the important message signal and the emergency message signal are simultaneously input, the most important message message is displayed. Only the message based on is displayed on the "message" display portion 18 of the display device 6. Then, when the urgent message signal disappears, a message based on the important message signal of high importance is then displayed on the "message" display section 18 of the display device 6.
Further, when the important message signal disappears, a message based on the normal message signal having the lowest importance is displayed on the "message" display section 18 of the display device 6.

Next, the operation of the control personal computer 8 configured as described above will be described with reference to the flowchart of FIG.
Now, as shown in FIG. 4, the time is displayed on the message display section 18 of the display device 6 in a state where no message signal is input to the control personal computer 8. In this state, the CPU 20 waits for a message signal from the programmable controller 7, the factory management personal computer 9 and the management office management personal computer 10.

The programmable controller 7,
When a message signal (in this case, a normal message signal) is output from the management computer 9 on the factory side or the management computer 10 on the management office side, in step 101, C
PU20 receives the message signal.

When receiving, in step 102, the CPU
20 determines whether or not it is an urgent message based on the code added to this message signal. When the code is "1,0", that is, the emergency message signal, the CPU 20 sets the emergency flag to "1" in step 103. If the code is not "1,0", that is, if it is not an emergency message signal, CP
U20 holds the emergency flag at "0".

Since the message signal in this case is a normal message signal, the process proceeds from step 104 to step 105.
Move on to. In step 105, the CPU 20 determines whether or not the message is an important message based on the code added to this message signal. When the code is "0, 1", that is, the important message signal, the CPU 20 sets the important flag to "1" in step 106. If the code is not "0, 1", that is, if it is not an important message signal, the CPU 20 holds the important flag at "0" in step 107.

At this time, since the message signal is a normal message signal, the process proceeds from step 107 to step 108.
Move on to. In step 108, the CPU 20 determines whether it is a normal message or not based on the code added to this message signal. When the code is "0, 0", that is, the normal message signal, the CPU 20 sets the normal flag to "1" in step 109. If the code is not "0, 0", that is, if it is not a normal message signal, the CPU 20 holds the normal flag at "0" in step 110. In this case, since the message signal is a normal message signal, set the normal flag to "1",
Move to step 111.

In step 111, the CPU 20 determines whether the content of the emergency flag is "1". And
In this case, the content of the emergency flag is "0", so CP
The U20 moves to step 113 and determines whether the content of the important flag is "1". Then, in this case, since the content of the important flag is "0", the CPU 20 moves to step 115.

In step 115, the CPU 20 determines whether the content of the normal flag is "1". And
In this case, since the content of the normal flag is "1", CP
U20 moves to step 116. In step 116, the CPU 20 reads out the message created based on the normal message signal and stored in the RAM 22 as display data, and the “message” display section 18 of the display device 6 is read.
The normal message is displayed instead of the time displayed in.

It should be noted that, while the normal message is being displayed, a new message signal (in this case, an important message signal is issued from the programmable controller 7, the factory-side management personal computer 9 or the management office-side management personal computer 10). ) Is output, in step 101, the CPU
20 receives the message signal.

Then, in step 105, it is judged that the message signal is an important message,
At step 106, the important flag is set to "1". Further, in step 113, the CPU 20 moves to step 114 based on the fact that the important flag is "1", and reads the message created based on the important message signal and stored in the RAM 22 as the display data. Then, the important message is displayed instead of the normal message displayed on the "message" display section 18 of the display device 6.

In the state where the important message is displayed, a new message signal (in this case, an emergency message signal is issued from the programmable controller 7, the factory side management personal computer 9 or the management office side management personal computer 10). ) Is output, the CP is sent in step 101.
U20 receives the message signal.

Then, in step 102, it is judged that the message signal is an emergency message,
In step 103, the emergency flag is set to "1". Further, in step 111, the CPU 20 moves to step 112 based on the fact that the emergency flag is "1", and reads the message created based on the emergency message signal and stored in the RAM 22 as the display data. Then, the emergency message is displayed in place of the important message displayed on the "message" display section 18 of the display device 6.

When a signal for canceling the emergency message signal is output from this state, it is determined in step 102 that the emergency message signal has been lost, and the emergency flag is changed from "1" to "0" in step 104. Then, in step 111, the urgent display data stored in the RAM 22 based on the urgent flag becoming "0" is erased, and the display based on the urgent message signal is erased,
Move to step 113. At this time, the important flag is "1"
Then, the process proceeds to step 114 to read the message created based on the important message signal and stored in the RAM 22 as data. And the CPU 20
Displays an important message in place of the emergency message displayed on the "message" display section 18 of the display device D.

When a signal for canceling the important message signal is output from this state, it is determined in step 105 that the important message signal is lost, and the important flag is changed from "1" to "0" in step 107. Then, in step 113, the important display data stored in the RAM 22 is erased based on the fact that the important flag becomes "0", the display based on the important message signal is erased, and the process proceeds to step 115. . At this time, the process proceeds to step 116 based on the normal flag being "1", and the message created based on the normal message signal and stored in the RAM 22 as the display data is read. And
The CPU 20 displays a normal message instead of the important message displayed on the “message” display section 18 of the display device 6.

When a signal for canceling the normal message signal is output, the "message" display portion 18 of the display device 6 displays the time instead of the normal message.
The emergency message is displayed on the "message" display unit 1 of the display device 6.
When a new emergency message signal is input to the CPU 20 in the state displayed in 8, the emergency message based on the new emergency message signal is preferentially displayed as a “message” instead of the displayed emergency message. It is displayed on the section 18.

In the state where the important message is displayed on the "message" display section 18 of the display device 6,
When a new important message signal is input to the CPU 20, instead of the displayed important message, the important message based on the new important message signal is preferentially displayed on the “message” display section 18.

Similarly, when a new ordinary message signal is input to the CPU 20 while the ordinary message is being displayed on the "message" display section 18 of the display device 6, the displayed ordinary message is replaced by the displayed ordinary message. A normal message based on the new normal message signal is displayed on the "message" display section 18.

As described in detail above, according to the above embodiment,
Message signals are classified into three types: normal message signals, important message signals, and urgent message signals, and a code indicating the importance is added so that the importance increases in the order of the normal message signal, the important message signal, and the urgent message signal. It was set by doing. Therefore, the CPU
Reference numeral 20 designates the display device 6 for the normal message signal, the important message signal, and the emergency message signal in order of decreasing importance.
Can be displayed on the "message" display section 18 of.
Therefore, the “message” display unit 18 always displays a message of high importance, and it is possible to prevent the operator from overlooking an important message.

The first network 1 is connected to the second network 3. Therefore, even from a management office relatively far from the factory, by operating the management office-side management personal computer 10, it is possible to display a normal message, an emergency message, etc. on the display device 6 of each production line.

Even when a normal message is displayed on the "message" display section 18 of the display device 6, by outputting an important message signal to the control personal computer 8,
An important message can be displayed on the "message" display section 18.

In this state, the emergency message can be displayed on the "message" display section 18 by outputting the emergency message signal to the control personal computer 8. Further, from this state, by outputting a signal for canceling the emergency message signal to the control personal computer 8, the important message can be displayed on the "message" display section 18. Furthermore, in this state, by outputting a signal for canceling the important message signal to the control personal computer 8, the normal message can be displayed on the "message" display section 18. Therefore, even when the urgent message is displayed in the "message" display section 18,
The normal message signal and the important message signal can be stored in the RAM 22 of the control personal computer 8. Similarly, even when the important message is displayed on the “message” display unit 18, the normal message signal can be stored in the RAM 22 of the control personal computer 8. Therefore, for example, even if the normal message displayed on the "message" display section 18 is switched to the important message due to the important message signal being output to the control personal computer 8, the normal message signal is stored in the RAM 22. . Therefore, even if the operator does not output the normal message signal to the control personal computer 8 again, the normal message can be automatically displayed when the important message signal is released. At this time, the operator can save the trouble of outputting the normal message signal to the control personal computer 8 again.

The present invention is not limited to the above-described embodiments, and the present invention can be carried out as follows with a part of the configuration appropriately changed without departing from the spirit of the invention. (1) In the above embodiment, the first network 1 in the factory
And the second network 3 on the management office side,
A message can be displayed on the display device 6 from the management personal computer 10 on the management office side.

This is not particularly connected to the second network, but only the first network 1 in the factory, and only from the factory-side management personal computer 9 and the programmable controller 7 that manage the first network 1. The message may be displayed on the “message” display section 18 of the display device 6.

(2) In the above embodiment, the messages displayed on the display device 6 are classified into three types, that is, a normal message, an important message and an urgent message according to their importance. This is not particularly limited to three types, but may be classified into two types or four or more types depending on the importance.

(3) In the above embodiment, the dot matrix is formed by arranging the LEDs of two colors on the display device 6, but the dot matrix is formed by arranging the LEDs of one color or three colors. Good. The dot matrix may of course be formed by a liquid crystal display panel.

(4) In the above embodiment, when the emergency message is displayed on the "message" display section 18 of the display device 6, a new emergency message signal is sent to the CP.
When input to U21, an urgent message based on a new urgent message signal may be displayed on the "message" display unit 18 after the displayed urgent message disappears. Further, it is needless to say that the same may be applied to the important message and the normal message.

(5) In the above embodiment, when the content of the message is long and the content of the entire message cannot be displayed in the "message" display section 20, the message may be displayed as non-flow characters.

(6) In the above embodiment, a picture may be entirely or partially displayed on the display section 13 of the display device 6 so that necessary information can be transmitted in a more understandable manner. Further, a moving image may be displayed on the display unit 13 of the display device 6.

(7) In the above embodiment, the normal message may be displayed according to a predetermined schedule. For example, a message of "line operation" is displayed on the display device 6 at 8:00 AM, and a message of "line stop" is displayed at PM5: 00. At this time, if the important message signal or the emergency message signal is output to the control personal computer, the important message or the emergency message is of course displayed.

(8) In the above embodiment, the RAM 22 in the control personal computer 8 stores many display formats of the display device 6. At this time, the CPU 20 may display a predetermined display format on the display unit 13 of the display device 6 at regular time intervals.

(9) In the above embodiment, a plurality of facilities M
If an abnormality occurs in the programmable controller 7 and an abnormal signal is input from the equipment M to the programmable controller 7, the programmable controller 7 alternately outputs the important message signals based on the abnormal signals at predetermined time intervals. You may perform the control which inputs into the control personal computer 8.
Therefore, for example, when the emergency message signal is not input to the control personal computer 8, each message based on each important message signal is alternately displayed on the "message" display section 18 of the display device 6 at a predetermined time interval. Displayed while switching.

[0063]

As described in detail above, according to the present invention, there is an excellent effect that a highly important message can always be preferentially displayed without erasing the highly important message.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a production management display system installed in a factory and a management office in one embodiment embodying the present invention.

FIG. 2 is an electrical block diagram of input and output to and from a control personal computer in one embodiment.

FIG. 3 is a front view showing a display device according to an embodiment.

FIG. 4 is a front view showing a display device according to an embodiment.

FIG. 5 is a flowchart for a control personal computer to display a normal message, an important message, and an emergency message on a display device according to their importance in one embodiment.

[Explanation of symbols]

 6 ... Display device.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Noritsugu Ishida 2-chome, Toyota-cho, Kariya city, Aichi Prefecture Toyota Industries Corporation

Claims (1)

[Claims] 1. A method of displaying a message in a production management display system, wherein various messages are displayed based on a message signal on a display device composed of a dot matrix for displaying production management information and facility information on a production line. In, add a code that indicates the importance to each message signal,
A method of displaying a message in a production control display system, in which a message signal having the highest importance is selected and the message is displayed preferentially on a display device.