JPH06208690A - Production management display system - Google Patents

Abstract

PURPOSE:To display further more information by an appropriate size as necessary without making the size of a display which displays production management information and 'ANDON' information (display abnormality in production line) larger than that of the conventional display, and to unnecessitate remaking the 'ANDON' information at the time of the change and reorganization of an equipment. CONSTITUTION:A programmable controller 6, control personal computers 7a and 7b, and factory side managing personal computer 8 are connected with a first network 1, and dot matrix type LED displays 9a and 9b are connected with the control personal computers 7a and 7b. The programmable controller 6 converts an abnormal signal inputted from each equipment 10 or the like on a production line into data according to the kind, and outputs the data signal to the first network 1. The control personal computers 7a and 7b prepare display data to be displayed on the LED display 9a and 9b based on the control data signal and plural display pattern formats, and allow the LED display 9a and 9b to display the necessary information.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a production management display system, and more specifically, it is installed on a production line in a factory and has production control information such as production target of the day, present results, and down time, and each process of the production line. The present invention relates to a production control display system that displays information (so-called "Andon" information) regarding the presence or absence of abnormalities in one display unit.

[0002]

2. Description of the Related Art In a production site of a factory that manufactures automobiles and machines, when an abnormality occurs in each process of a production line, the abnormality is swiftly dealt with to reduce the influence on the next process, or As a substitute when the worker temporarily leaves the place due to a toilet break or the like, a support staff stands by in addition to the worker who performs a predetermined process work.

[0003] In general, in a production site of a factory, a production control panel for informing a worker of the achievement rate of a production target and the like, and an indicator (so-called "so-called" so-called "" Andong ") is installed.
The production control panel displays the production target of the day, the current results, the stop time, etc., and motivates the worker to be informed of the progress of the work. In addition, "Andon" informs the support staff of the occurrence of abnormalities in each process of the production line and information on whether a substitute is needed.

As shown in FIG. 7, the production control board 51 and the ANDON 52 are connected to a programmable controller 54 via a dedicated line 53. The ANDON 52 has a large number of display parts 52a, 52 displaying numbers corresponding to the respective processes.
b are arranged in two rows and two columns. Upper display 52a
Is surrounded by a yellow frame, and the lower display unit 52b is surrounded by a red frame. Display part 52b with a red frame
Indicates that the work is stopped, and that the yellow frame display 52a indicates that a support staff is required.

The programmable controller 54 receives output signals from an abnormality detector (not shown), a push button switch 56, etc., installed in the equipment 55 of each process.
Then, the programmable controller 54, based on those abnormal signals and the like, displays the display parts 52a, 5 of the ANDON 52.
The lamp of 2b is turned on in a one-to-one manner.
Further, the programmable controller 54 is the production control board 51.
The numerical values of the actual result and the stop time in the display section of are changed based on the operational results of each process.

[0006]

However, in the conventional ANDON 52, the number of display parts 52a and 52b corresponding to the number of processes is increased.
It is necessary to increase the size of each display section 52a, 52b to some extent in order to be visible from a distance. As a result, the size of the device becomes large and a large installation space is required, and the amount of information cannot be increased due to the size balance. Therefore, the conventional production control panel 51 and ANDON 52 cannot display various messages to the operator, and it is necessary to call the operator or give detailed work instructions by the local broadcast. But,
On the premises broadcast, there is a case where a work instruction or the like is missed or a hearing error occurs due to work noise or the like. In addition, the display unit 52
Since a and 52b have a one-to-one correspondence with equipment,
It is necessary to recreate the ANDON 52 every time the process is changed, the equipment is changed, or the equipment is changed. Furthermore, Andon information could not be seen at a remote place away from the production line, such as an office in a building separate from the factory.

The present invention has been made in view of the above problems, and a first object thereof is to increase the size of a display device for displaying production control information and ANDON information without increasing the size of the display device. We will provide a production management display system that can display the information of the above in an appropriate size when needed, and can respond only by changing the data for screen display without recreating ANDON when changing the process, changing the equipment, or remodeling. Especially.

A second purpose is to allow the display contents of the display section provided on the production line to be monitored and to display production management information, ANDON information, etc. by a command from a control device other than the programmable controller. Another object of the present invention is to provide a production control display system capable of changing the display contents of the display unit.

The third purpose is to enable production information and ANDON information to be viewed at an office away from the production line and to store history data of each facility based on the information from the programmable controller. To provide a management display system.

[0010]

In order to achieve the first object, in the invention according to claim 1, a dot for displaying production management information and information regarding presence / absence of abnormality in each process of the production line. A matrix type display, a first control means for inputting an abnormal signal or the like from each facility of the production line, converting the signal into data, and a large number of display pattern formats for displaying on the display are provided. Equipped with a memorized storage device,
A predetermined display pattern format is selected from a large number of display pattern formats based on the output signal from the first control means, and display data obtained by adding necessary items to the display pattern format is output to the display. And a second control means.

In order to achieve the second object, according to the invention described in claim 2, in addition to the configuration of the invention described in claim 1, the first and second control means are connected via a network. Is equipped with a monitor display, the same content as that displayed on the display is displayed on the monitor display based on the output signal from the first control means, and the second control means displays the same content. The control device is capable of outputting a command signal for changing the display content of.

Further, in order to achieve the third object, in the invention described in claim 3, in addition to the configuration of the invention described in claim 1, the first and second control means are connected via a network. And a data server for accumulating operation data and the like of each facility based on the output signal from the first control means, and the first and second control means and the data server are connected via a network for monitoring. A function for displaying the same content as that displayed on the display on the basis of the data of the data server, and a command signal for causing the second control means to change the display content of the display. And a control device having a function of outputting

[0013]

In the invention described in claim 1, the production target of the day,
Production management information such as current performance and stop time, information regarding the presence / absence of abnormality in each process of the production line (so-called "Andon" information), and the like are displayed on a large-sized display.
The display is a dot matrix type and displays according to a display data signal from the second control means. First
The control means inputs an abnormal signal from each facility of the production line, such as a maintenance request signal, a robot failure signal, or a replacement request signal. Then, the signal is converted into data and output. The second control means inputs the output signal from the first control means and selects an appropriate display pattern format from a large number of basic display patterns (display pattern formats) stored in the storage device based on the signal. To do. Then, the second control means determines the display contents of the variable portion in the display pattern format according to the signal from the first control means, and outputs the display data signal for displaying the display pattern to the display. The display displays a screen according to the display data signal.

Further, in the invention according to claim 2, the first
The output signal from the first control means is also input to the control device connected to the second control means via the network. Based on the signal, the control device displays the same content as that displayed on the monitor display on the monitor display. Therefore, the display contents of the display installed on the production line can be monitored at a place away from the production line.
Further, the content of the display pattern format selected by the second control means is changed by the command signal from the control device, and the display content of the display is also changed by the command from the control device.

Further, in the invention according to claim 3, the first
And the output signal from the first control means is input to the data server connected to the second control means via the network. Based on the signal, the data server accumulates operation data of each facility or the like or data such as the time of occurrence of an abnormal signal. The control device causes the monitor display to display the same content as the content displayed on the display based on the accumulated data of the data server. The display pattern format selected by the second control means is changed by the command signal from the control device, and the display content of the display is also changed by the command from the control device.

[0016]

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. As shown in FIG. 1, the production control 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 display system 4 is provided in a building (management office) different from the building in which the production line is provided. The second network 3 uses a local area network (LAN) Ethernet as a transmission medium. The first network 1 and the second network 3 are connected via a gateway 5.

In the first network 1, a programmable controller 6 as first control means, display control personal computers (hereinafter referred to as control personal computers) 7a and 7b as second control means, and control devices. Personal computer for factory operation management (hereinafter,
It is connected to the factory management PC) 8. LED (light emitting diode) displays 9a and 9b as dot matrix type displays are connected to the control personal computers 7a and 7b. Control personal computer 7
Two a, 7b and LED displays 9a, 9b are provided. If the production line is large, the front end process and the rear end process are separated from each other, and it is difficult to secure a state in which all the workers can easily see with one LED display. Also, different information transmission is required between the front end process and the rear end process. In some cases, two units are provided.

The programmable controller 6 is connected to the equipment 10 provided in each process of the production line through a signal line, controls each equipment 10, and outputs from an abnormal signal output section provided in each process. An abnormal signal is input. The abnormal signal output unit is in a state different from the normal operating state, such as an abnormality detector provided in each facility 10 and a maintenance time alarm, a push button switch 11 used when a worker needs assistance, and the like. Is a general term for devices that output a signal indicating.

The programmable controller 6 digitizes (encodes) the input abnormal signal according to its type,
The data is output as a data signal on the first network 1 and stored in a storage device (not shown) built in the programmable controller 6. The storage device has a capacity capable of accumulating operation history data for one day of the production line, and the operation history data for the current day of the production line is sequentially stored. The programmable controller 6 has a built-in timer, and the time at which the abnormality of each process occurs and the time when it is resolved is stored together with the type of abnormality.
The programmable controller 6 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 to the first network 1 as a data signal of the operation record and stop time.

As shown in FIG. 2, the LED display 9
The display unit 12 of a and 9b has a plurality of 16 × 16 dot matrix units 12a in a plurality of rows and a plurality of columns (in this embodiment, 12
(Rows, 12 columns). The LED used in the dot matrix unit 12a is a two-color LED in which red and green LED chips are put in one lamp. Two-color LEDs have one common terminal, one red lighting terminal and one green lighting terminal, for a total of 3
When a current is applied between the common terminal and the lighting terminal, the corresponding color LED is turned on. The two-color LED lights up red when only red lights up, lights up green when only green lights up, and lights up orange when both lights up.

A control circuit shown in FIG. 3 is provided on the back surface of each dot matrix unit 12a. The control circuit includes a Y driver 13 that controls energization to the common terminal of the two-color LED, an X driver 14a that controls energization to the red lighting terminal, and an X driver 14b that controls energization to the green lighting terminal. Each X driver 14a, 1
4b corresponding to the shift registers 15a and 15b. Shift registers 15a, 1 of twelve dot matrix units 12a forming each row of the display unit 12
5b are respectively connected in series. Each shift register 15a, 15b has a data signal DSIG and a clock C.
LK and the latch signal LSIG (only the shift register 15a is shown) are input. The stage address signal ASIG is input to the Y driver 13. The display data input to each shift register 15a, 15b is sent to the X drivers 14a, 14b by the latch signal LSIG,
The two-color LED of the stage selected by the Y driver 13 lights up in a color corresponding to the display data sent to the X drivers 14a and 14b.

As shown in FIG. 4, control personal computers 7a, 7
b is a CPU (central processing unit) 16, a ROM (read only memory) 17, a RAM (random access memory)
18a, a nonvolatile RAM 18b as a storage device, a display data storage RAM (hereinafter referred to as a display RAM) 19,
Input / output port 20, shift register 21, and driver 2
Equipped with 2. CPU16, ROM17, RAM18
a, the nonvolatile RAM 18b, the display RAM 19, the input / output port 20, and the shift register 21 are the address bus A
B, the data bus DB, and the control bus CB, and the CPU 16 and the driver 22 are connected via the control bus CB. A control program is stored in the ROM 17. The calculation results of the CPU 16 and the like are temporarily stored in the RAM 18a. Further, the nonvolatile RAM 18b stores a large number of display pattern formats to be displayed on the LED displays 9a and 9b. The display pattern format is stored as a file including a file header, fixed display data, and variable display data.

Some of the display pattern formats whose main purpose is to display production control information like the conventional production control panel correspond to a display screen as shown in FIG. 5, for example. In this display pattern, the production control information is displayed in the top 10 lines of the 12 lines of the dot matrix unit 12a, and the message is displayed in the bottom 2 lines. In the production control information, all the kanji display parts are fixed display data, and all the numeric display parts are variable display data. Also, the display portion of the message is variable display data.
In this display pattern, a “target” indicating a production target, a “actual result” indicating a production result, a “stop” indicating a cumulative stop time, an “overtime work” indicating a planned overtime time, and their numerical values are displayed large. This display pattern is used when there is no abnormality in the production line, and the current time is displayed on the message display section when there is no particular message to be displayed. Kanji is displayed in green and numbers are displayed in orange. However, the number indicating the cumulative stop time is displayed in orange if the cumulative stop time is within the allowable stop time, but is displayed in red if it exceeds the allowable stop time. Further, the display color of the message is set appropriately.

As a means for displaying ANDON information when an abnormality occurs in the production line, there is a display pattern format corresponding to the display screen shown in FIG. 6, for example. In this display pattern, production control information is displayed on the upper half of the LED displays 9a and 9b, and ANDON information and messages are displayed on the lower half. The Chinese character portion of the production control information becomes the fixed display data, and the numerical display portion of the production control information and the ANDON information and message display portion become the variable display data. Production control information is the goal,
Achievements and suspensions are displayed and overtime is omitted. As the stop time, the cumulative stop time and the stop time due to the abnormal stop at this time are switched and displayed every predetermined time (for example, 30 seconds). When the cumulative stop time is displayed, today's display is also displayed after the stop character.

The display of the ANDON information is performed by displaying the process numbers in which the abnormality signal is output in the order of occurrence of the abnormality. When the process is not stopped and the supporter is simply called, a black number is displayed with an orange background and a black number is displayed with a red background when the process is stopped. The message display section displays "equipment abnormality" and the type of abnormality.

When it is necessary to display many kinds of messages, another basic display pattern is used in which the size of the characters representing the production control information is reduced and the area of the message display portion is increased. When the number of characters in one message is too large to fit in one line, the displayed characters are sequentially moved to display new characters while changing to new characters. Basic display pattern is not only letters,
Some patterns are accompanied by graphic displays. As the graphic display, there is a case where the shape of the production line is displayed to indicate an abnormal place.

The CPU 16 inputs an output signal from the programmable controller 6, the factory management personal computer 8 or an office management personal computer to be described later through the input / output port 20. Then, the signal data is stored in the RAM 18a, an appropriate display pattern format corresponding to the signal is selected from a large number of display pattern formats stored in the nonvolatile RAM 18b, and the data is stored in the display RAM 19. . Further, the value of the variable display data is set based on the signal data, and the display R
The display data of AM19 is confirmed.

In the display RAM 19, a storage area having an address corresponding to the arrangement of the two-color LEDs constituting the LED displays 9a and 9b is provided separately for red display data and green display data. Then, the LED display 9 corresponding to the address of each storage area
When the two-color LEDs on a and 9b are turned on in red, the red display data of the address is 1 and the green display data is 0.
Becomes When the two-color LED is turned on in green, the red display data of the address is 0 and the green display data is 1. When the two-color LED is lit in orange, both the red display data and the green display data of the address become 1. When the two-color LED is not turned on, both the red display data and the green display data of the address become 0.

When displaying on the LED displays 9a and 9b, the CPU 16 sends the display data stored in the display RAM 19 to the shift register 21 in a predetermined order. The display data is transferred in parallel with respect to the display data corresponding to the 12 rows of dot matrix units 12a forming the LED displays 9a and 9b. The display data corresponding to the uppermost (first stage) two-color LED of the dot matrix unit 12a in each row is transferred in units of 16 bits, and the display data for one stage is first transferred. When the display data for one stage (16 × 12 = 192 bits) is transferred, the display data for the next stage is sequentially transferred. And
When the transfer of the display data of the 16th stage is completed, the transfer of the display data from the 1st stage is repeated again. The transfer of data for 16 stages is repeated at a cycle of about 1/100 second.

The shift register 21 converts 16-bit parallel data from the display RAM 19 into serial data. The driver 22 uses an LED to display data and control signals.
Output to the displays 9a and 9b.

The factory management personal computer 8 is equipped with a CRT display device 8a as a monitor display, and
Control personal computer 7 in the built-in non-volatile RAM (not shown)
A display pattern format similar to that stored in the non-volatile RAM 18b of a and 7b is stored.
Factory side management personal computer 8 is programmable controller 6
Based on the output signal from the LED display 9a,
A display similar to that of 9b can be displayed on the CRT display device 8a. The number of pixels of the LED displays 9a and 9b is 192 × 192, whereas the CRT display device 8
The number of pixels of “a” is approximately 640 × 400 on a 14-inch screen, which is much larger than the number of pixels of the LED displays 9a and 9b. Therefore, both LEs can be displayed on the CRT display device 8a at a time.
The display contents of the D displays 9a and 9b can be displayed. When displaying the display contents of both LED displays 9a and 9b at the same time, the first LED is displayed on the left side of the upper half of the screen.
The same screen as the display 9a is displayed, and the same screen as the second LED display 9b is displayed on the right side of the upper half.

The factory-side management personal computer 8 can access the control personal computers 7a and 7b via the first network 1, and the RAM 18a and the non-volatile RAM 18 in the control personal computers 7a and 7b are controlled by signals from the factory-side management personal computer 8.
b and the data in the display RAM 19 can be rewritten. Of the data in the display RAM 19, what is normally rewritten is the target numerical value and the message on the message display section today. When rewriting, CRT display device 8
A display screen to be displayed on the LED displays 9a and 9b is created on the display screen of a, and the display data is output to the control personal computers 7a and 7b via the first network 1.

Further, the factory-side management personal computer 8 can access the programmable controller 6 via the first network 1, and the RA of the programmable controller 6 can be accessed.
The operation history data stored in M can be read.

The data server 2 is provided in the second network 3.
3 and an office-side operation management personal computer as a control device (hereinafter referred to as office-side management personal computer) 2
4 and a personal computer for display monitor (hereinafter referred to as a personal computer for display monitor) 25 are connected.
A printer 26 is connected to the office-side management personal computer 24, and a CRT display device 24a as a monitor display is installed. Display monitor personal computer 2
A large CRT 27 for management is connected to 5.

The data server 23 has a RAM for storing operation status data files, operation history data files, message files and moving image files. The data server 23 inputs the output signal from the programmable controller 6 via the first network 1, the gateway 5 and the second network 3, and stores the operating status of each process at the present time of the production line as an operating status file in RA.
Sequentially store in M. Also, the operation history data of the production line is stored in the RAM as an operation history data file. The operation history data stored in the programmable controller 6 is for the current day, but the data server 23 stores the operation history data for a long period of time.

The display monitor personal computer 25 has a built-in non-volatile RAM (not shown) in which a display pattern format similar to that stored in the non-volatile RAM 18b of the control personal computers 7a and 7b is stored. The display monitor personal computer 25 uses the LED display 9a, 9b based on the operating status file data stored in the data server 23.
Large CRT for real-time display similar to that of
It is supposed to be displayed on 27. Large CRT2 for management
7, the display content of the first LED display 9a is displayed on the left side of the screen, and the display content of the second LED display 9b is displayed on the right side.

The office-side management personal computer 24 can access the control personal computers 7a and 7b via the second network 3, the gateway 5 and the first network 1.
A control personal computer 7a, similar to the factory personal computer 8
Data in the RAM 18a, the non-volatile RAM 18b, and the display RAM 19 in 7b can be rewritten. What is normally rewritten in the display RAM 19 is the today's target numerical value, the numerical value of overtime hours, and the message on the message display unit. The office-side management personal computer 24 is accessible to the programmable controller 6 via the second network 3, the gateway 5 and the first network 1, and instructs the programmable controller 6 on the tact time. The tact time is a time value indicating how long one unit of work should be performed in each process.

The office side management personal computer 24 processes the operation history data of the production line stored in the data server 23 into data usable by general spreadsheet software, and analyzes the operation history data by using the spreadsheet software. , Can be edited. The operation status data, the operation history data, and the like are appropriately printed out by the printer 26.

Next, the operation of the production management display system configured as described above will be described. The system is powered on prior to the production line operation. Control personal computer 7a,
7b operates according to the control program stored in the ROM 17, and the initialization process is first performed by turning on the power.
Next, the basic display pattern in which the production control information is displayed in large size is selected, and the data is stored in the display RAM 19. Then, the CPU 16 transfers the display data stored in the display RAM 19 to the shift register 21 in a predetermined order. The display data is transferred by the LED displays 9a, 9
12 rows of dot matrix units 12 forming b
The display data corresponding to a is performed in parallel.
The display data corresponding to the uppermost (first stage) two-color LED of the dot matrix unit 12a in each row is transferred in units of 16 bits, and the display data for one stage is first transferred. When the display data for one stage (16 × 12 = 192 bits) is transferred, the display data for the next stage is sequentially transferred. Then, when the transfer of the display data of the 16th stage is completed, the transfer of the display data from the 1st stage is repeated again.
The transfer of data for 16 stages is repeated at a cycle of about 1/100 second. The 16-bit parallel data transferred to the shift register 21 is converted into serial data by the shift register 21, and is output from the driver 22 to the LED displays 9a and 9b as a display data signal together with a control signal.

The display data signal and the control signal are LED
The shift registers 15a and 15b of the dot matrix unit 12a which are received by a receiver (not shown) of the displays 9a and 9b and are arranged at the end of each row of the LED displays 9a and 9b through the buffer and the decoder.
Are input respectively. Then, the shift register 15 of the dot matrix unit 12a sequentially arranged next to each other.
a, 15b. When the display data for one stage is input to each shift register 15a, 15b, a latch signal is output from the control personal computers 7a, 7b, and the display data input to each shift register 15a, 15b is X.
It is sent to the drivers 14a and 14b. Then, the two-color LED of the stage selected by the Y driver 13 becomes the X driver 14
It is lit in a color corresponding to the display data sent to a and 14b. This operation is sequentially performed for each of 16 stages. That is, of the 16 stages of the two-color LEDs forming the dot matrix unit 12a in each row, only one stage is turned on at one time. Since this operation is repeated at an interval of about 1/100 second, even if only one stage is lit at a time, when a person looks at the screen, the two-color LEDs of all stages are simultaneously lit due to afterimages. You are looking at the same screen as. In order to turn on all the two-color LEDs at the same time, the number of transistors corresponding to the number of stages is required. On the other hand, in the case of sequentially turning on one stage at a time, the number of transistors is sufficient for one stage.

In this state, the LED displays 9a, 9
A standard screen as shown in FIG. 5 is displayed in b. However, at this time, the numerical value indicating the production management information, which is the variable display portion, is not displayed. Further, the message display section displays time. Next, the display data signal of today's target number, which is one of the variable display data, is input from the office side management personal computer 24 to the control personal computers 7a and 7b, and based on the display data signal, the corresponding area of the display RAM 19 is displayed. The data is rewritten. Therefore, after that, the display data output to the LED displays 9a and 9b includes effective variable display data indicating the target number for today, and the numerical value is LE.
It is displayed on the D displays 9a and 9b.

Next, when the operation of the production line is started, the programmable controller 6 inputs signals from the equipment 10 and the push button switch 11 of each process. Then, the operating status of the production line is judged according to the presence / absence of an abnormal signal, and the abnormal signal is converted into data (encoding) according to its type.
Then, the data is stored in the built-in storage device as operation history data. Further, the programmable controller 6 outputs the abnormal data data as a data signal on the first network 1. The programmable controller 6 converts all the input abnormal signals into data and stores it in the storage device as operation history data. That is, the operation history data of the production line of the day is sequentially stored in the storage device. The programmable controller 6 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 to the first network 1 as a data signal of the operation record and stop time.

In the conventional ANDON, even when an abnormal signal is output from a certain process and an abnormal signal of another cause is output from the same process, it is not necessary to change the display state of the ANDON. No signal data is collected and stored. Therefore, when the operating rate of the production line is lowered, it is not possible to perform a detailed factor analysis when performing factor analysis from the operation history data. However, in the apparatus of this embodiment, since the programmable controller 6 converts all the abnormal signals output from each process into data and stores them in the storage device, it is possible to perform more detailed factor analysis from the operation history data.

Equipment 10 or push button switch 11
In the state where the abnormal signal is not output from the programmable controller 6, the programmable controller 6 outputs the data signal of the operation record and the stop time at predetermined intervals. The control personal computers 7a and 7b receive the data signal, store the signal data in the RAM 18a, and display the RAM 19 on the basis of the data.
Rewrite the variable display data corresponding to the operation record and stop time. Then, the value is displayed on the LED display 9a,
Display on 9b. That is, in a state where there is no abnormality in the production line, a standard screen as shown in FIG. 5 in which the production management information is largely displayed is displayed on the LED displays 9a and 9b.

The factory control personal computer 8 inputs the output signal from the programmable controller 6 via the first network 1 and, based on the signal, displays the same display as the LED displays 9a and 9b on the CRT display device 8a. Display it. Normally, the CRT display device 8a displays the same screen as the first LED display 9a on the left side of the upper half of the screen and the same screen as the second LED display 9b on the right side of the upper half.

The data signal output from the programmable controller 6 to the first network 1 is input to the data server 23 via the gateway 5 and the second network 3. The data server 23 sequentially stores the data signal in a predetermined area of the RAM as an operation status file of each process at the present time of the production line. This data is rewritten sequentially. Further, the data server 23 sequentially stores the operation history data files of the production line in another RAM based on the data signal.

The display monitor personal computer 25 accesses the data server 23 via the second network 3 and, based on the operating status file data stored in the data server 23, displays the same display contents as the LED displays 9a and 9b in real time. Is displayed side by side on the large CRT 27 for management.

When the control personal computers 7a and 7b receive the abnormal signal data output from the programmable controller 6, the control personal computers 7a and 7b have a display pattern format to be displayed on the LED displays 9a and 9b, which corresponds to the abnormal display screen as shown in FIG. 6, for example. Selected display pattern format. Next, after storing the data in the display RAM 19, the variable display data corresponding to the ANDON information display section and the message display section is rewritten based on the abnormal signal data. After that, the display data of the display RAM 19 is output to the LED displays 9a and 9b in the same manner as described above,
An abnormality display screen as shown in FIG. 6 is displayed on the LED displays 9a and 9b. Also, C on the factory management PC 8
The screens of the RT display device 8a and the large CRT 27 for management are also changed to the abnormal display screen. Then, when the abnormality in the production line is eliminated, the screens of the LED displays 9a, 9b and the like return to the standard screen again.

The office side management personal computer 24 calculates the overtime hours from the production target value and the operation history data accumulated in the data server 23, and outputs a data signal for displaying the overtime hours on the control personal computers 7a and 7b. To do. Upon receiving the data signal, the control personal computers 7a and 7b rewrite the display data corresponding to the overtime display section of the display RAM 19 based on the data signal.

A desired message is displayed on the message display portion of the LED displays 9a and 9b according to an instruction from the factory management PC 8 or the office management PC 24 (hereinafter referred to as factory management PC 8).
When displaying a message on the LED displays 9a and 9b, the factory management personal computer 8 is operated to display the message on the screen of the CRT display device 8a, and the display data signal is output to the control personal computers 7a and 7b. Upon receiving the data signal, the control personal computers 7a and 7b rewrite the display data corresponding to the message display portion of the display RAM 19 based on the data signal. As a result, the display data is output to the LED displays 9a and 9b, and the message instructed by the factory management computer 8 or the like is displayed on the LED displays 9a and 9b. LED display 9 where message volume is currently displayed
If the display screens a and 9b cannot handle the amount, the factory management personal computer 8 or the like issues a display pattern format command to the control personal computers 7a and 7b. The control personal computers 7a and 7b select another display pattern format in accordance with the instruction, and after confirming the display data, output the display data to the LED displays 9a and 9b.

As described above, the LED displays 9a, 9
Necessary information is selected and displayed in b, and the layout and size of the display unit for displaying each information on the display screen can be changed. Therefore, unlike the conventional production control panel or ANDON, the production control information, ANDON information or message information can be displayed on one display without increasing the size of the display. Also, control personal computers 7a, 7
In b, a most appropriate display pattern format is selected from a large number of display pattern formats, and production control information, ANDON information, and message information are displayed on the LED displays 9a and 9b, so that more appropriate and detailed information display is performed. be able to. Also, process changes on the production line,
Even if the equipment is modified or changed, it can be easily dealt with by changing the screen display data, that is, the display pattern format.

The display data forming the display screen displayed on the LED displays 9a, 9b is prepared by only changing the variable display data in the display pattern format consisting of the fixed display data and the variable display data. Therefore, the display data can be produced in a short time, and the required display screen can be displayed substantially in real time according to the instruction from the programmable controller 6 or the factory management PC 8.

Further, the administrator can appropriately confirm and edit the necessary management information based on the operation history data accumulated in the data server 23 by the office side management personal computer 24. Since the operation history data of each facility and the like on the production line is stored in the data server 23 based on the output signal from the programmable controller 6, fine management is possible. Note that the present invention is not limited to the above-described embodiment, and for example, it is not always necessary to simultaneously display production management information and Andong information on the abnormality display screen, and in some cases only Andong information is displayed large. Good. Also, depending on the size of the production line and the layout of each process, the LED displays 9a, 9b and the control personal computer 7a,
The number of 7b may be one or three or more. Further, instead of connecting the factory management PC 8 to the first network 1, the operation history data accumulated in the data server 23 is used by connecting to the second network 3, or the printer is connected and edited. Data may be printed out as appropriate. Alternatively, the second display system 4 may not be provided and only the first display system 2 may be used, or the factory management PC 8 may be omitted from the first display system 2. Further, the number of dot matrix units 12a constituting the LED displays 9a and 9b may be other than 12 rows and 12 columns, or the dot matrix units 12a other than the 16 × 16 dot matrix may be used. Further, LEDs other than red and green two-color LEDs may be used, or a display of another type such as a plasma display, an electroluminescence display or a liquid crystal display may be used instead of the LED display. . Further, the display data of the CRT display device 8a may be transferred from the display RAM 19 of the control personal computers 7a and 7b to the RAM of the factory management personal computer 8 so that the factory management personal computer 8 uses the display data.

[0054]

As described above in detail, in the invention according to claim 1, an appropriate display pattern format selected from a large number of display pattern formats corresponding to the presence or absence of an abnormality in the production line, abnormality data, etc. Based on this, production control information and ANDON information, etc. are displayed in an appropriate size on a large dot matrix type display, so when more information is needed without increasing the size of the display device than before. Can be displayed in an appropriate size. Further, since the display screen of the display can be changed only by changing the data for screen display, there is no need to recreate ANDON when changing the process, changing the equipment, or modifying unlike the conventional apparatus.

Further, in the invention according to the second aspect, the display contents of the display provided on the production line can be monitored by the monitor display provided at a place apart from the installation position of the display. Further, since the control device equipped with the monitor display is connected to the second control means for controlling the display of the display installed in the production line via the network, the display device is controlled by the command signal from the control device. You can change the display content.

Further, in the invention described in claim 3, claim 2
Similar to the invention described in (1), the display contents (production control information and ANDON information) of the display provided on the production line can be viewed at an office or the like away from the position where the display is installed. The display content of the display can be changed by a command signal from the control device provided. Further, since the abnormal signal data output from the first control means based on the abnormal signal of each facility in the production line is input to the data server via the network and accumulated as the operation history data of each facility, the data server The operation history data accumulated in the can be edited as management data by the control device.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a production management display system according to an embodiment of the present invention.

FIG. 2 is a schematic front view of an LED display.

FIG. 3 is a block diagram of a control circuit of the dot matrix unit.

FIG. 4 is a block circuit diagram showing a control circuit of a control personal computer.

FIG. 5 is a schematic diagram showing an example of a standard screen displayed on an LED display.

FIG. 6 is a schematic diagram showing an example of an abnormality display screen displayed on an LED display.

FIG. 7 is a schematic configuration diagram of a conventional “Andon” and a production control board.

[Explanation of symbols]

1 ... 1st network, 3 ... 2nd network, 6
... programmable controller as first control means, 7a, 7b ... control personal computer as second control means, 8 ... factory-side management personal computer as control device, 8a ...
CRT display device as monitor display, 9a,
9b ... LED display as a display, 10
… Equipment, 12a… Dot matrix unit, 18a
... RAM, 18b ... non-volatile RAM as a storage device,
19 ... Display RAM, 23 ... Data server, 24 ... Office-side management personal computer as a control device, 24a ... CRT display device as a monitor display, 27 ... Large CRT for management.

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

Claims (3)

[Claims] 1. A dot-matrix type display for displaying production control information and information regarding the presence or absence of an abnormality in each process of the production line, and inputting an abnormality signal from each facility of the production line, and the like. A first control means for converting the signal into data and outputting it, and a storage device for storing a large number of display pattern formats for displaying on the display are provided, and a large number of signals are output based on the output signal from the first control means. A production management display system comprising: a second control means for selecting a predetermined display pattern format from the display pattern formats and outputting display data obtained by adding necessary items to the display pattern format to the display. 2. A dot-matrix type display for displaying production control information and information regarding the presence or absence of an abnormality in each process of the production line, and inputting an abnormality signal from each facility of the production line, and the like. A first control means for converting the signal into data and outputting it, and a storage device for storing a large number of display pattern formats for displaying on the display are provided, and a large number of signals are output based on the output signal from the first control means. Second control means for selecting a predetermined display pattern format from the display pattern formats and outputting display data to the display, the display data including necessary items in the display pattern format; and the first and second controls. And a monitor display, which is connected to the means via a network A control capable of displaying the same content as the content displayed on the display on the monitor display based on the output signal from the control means and outputting a command signal for causing the second control means to change the display content of the display. A production control display system equipped with a device. 3. A dot-matrix type display for displaying production control information and information on whether or not there is an abnormality in each process of the production line, and inputting an abnormality signal from each facility of the production line, and the like. A first control means for converting the signal into data and outputting it, and a storage device for storing a large number of display pattern formats for displaying on the display are provided, and a large number of signals are output based on the output signal from the first control means. Second control means for selecting a predetermined display pattern format from the display pattern formats and outputting display data to the display, the display data including necessary items in the display pattern format; and the first and second controls. Connected to the means via a network, based on the output signal from the first control means A data server that stores operation data and the like, is connected to the first and second control means and the data server via a network, is equipped with a monitor display, and displays on the display based on the data of the data server. A production management display system having a control device having a function of displaying the same content as that displayed on a monitor display and a function of outputting a command signal for changing the display content of the display to the second control means.