JPH04105105A - Display screen production system for plural pc controllers, sequence program producing device, and control state display device - Google Patents

Abstract

PURPOSE:To early start plural PC controllers with the reduced manhour and at a low cost by producing a display table and producing automatically a screen form based on display table. CONSTITUTION:A facility monitor screen information production part 74 decides whether the action commands shown as each grating of an arrangement table 220 are included in a sequence program as the output instructions or not. If so, the flags corresponding to each grating are set at '1'. If not, these flags are set at '0'. Then the part 74 produces a display table 210 and outputs this table together with a programmable controller PC through a program output processing part 38. Thus a screen form is automatically produced in accordance with the contents of the sequence program. As a result, plural PC controllers can be started in a short time and at a low cost.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a display screen creation method, a sequence program creation device, and a control status display device for a plurality of PC control devices, and particularly relates to creation of a screen format.

[Conventional technology] With the automation of production lines, multiple machine tools have been integrated and
Equipment that operates in parallel is now being used.

A transfer machine is known as such equipment.

FIG. 6 shows an example configuration of the transfer machine.

The transfer machine shown in this figure has a plurality of (n in the figure) stations 10-1, 10-2,
...10-n.

Each station 10 is a machine tool, and is composed of left and right units 1-14-L and 14-R arranged on both sides of the central transfer par 12.

A transfer unit 16 is arranged on the end side of the transfer par 12. Transfer unit 16 constitutes a general station. The general station drives the transfer par 12 to transport the workpiece, for example, in the direction of the arrow in the figure. In each station 10, the left and right units 1.4-L and 14-R perform processing on the transported workpiece from both the left and right sides.

Further, the transfer machine shown in this figure is controlled by a multi-PC control device composed of a plurality of PCs (programmable controllers).

That is, each unit 14 is provided with a PCl3. Further, the transfer unit 16 is attached with a general PC 20, and is equipped with a PC13 and a general PC.
The C20s are connected to each other by a link line 22.

The PClg and the general PC 20 operate according to a so-called sequence program, and the corresponding unit 14 or 16
control. In this conventional example, the control target is PCl
In the case of 3, it is the corresponding unit 14, and the comprehensive PC 20
In this case, it is the transfer unit 16. In addition to controlling the transfer unit 16, the general PC 20 also controls the entire transfer machine.

The PC13 and the general PC 20 each operate according to a sequence program, and also operate in parallel by exchanging data with each other via the link line 22. As a result of such operations, for example, several dozen stations 10 cooperate to perform processing, and a series of operations as a transfer machine is performed.

FIG. 7 shows a configuration related to creation and input of a sequence program in the transfer machine.

As shown in this figure, a sequence program for operating the PCl3 and the comprehensive PC 20 is normally created as a file 100 by the sequence program creation device 24, and downloaded from the peripheral device 26 to the PCl3 and the comprehensive PC 20.

That is, when operating the transfer machine, the user first creates a sequence program by operating the sequence program creation device 24. The created sequence program is stored in a file 100, and this file 100 is accessed by the peripheral device 26. The peripheral device 26 downloads the sequence program to each PC13 and the general PC 20 individually or all at once.

FIG. 8 shows the configuration of the sequence program creation device 24 in this conventional example.

The sequence program creation device shown in this figure includes a human interaction processing unit 28 that performs human interaction processing with the user, a code input processing unit 30 that executes processing related to human interaction with the user, and a code input processing unit 30 that executes processing related to human interaction with the user. A comment input processing unit 32 that executes processing related to comment input, a PC program creation processing unit 34 that creates a sequence program based on input codes, etc., and a PC automatic address assignment that automatically assigns an address to the created sequence program. A processing section 36, a PC program output processing section 38 that outputs the created sequence program, a contact table creation processing section 40 that creates a contact table related to the sequence program, and a circuit creation section that creates a circuit based on the sequence program. 42, a drawing-recycling processing unit 44 that collectively utilizes created drawings, and an automatic drafting output processing unit 46 that automatically outputs created drawings. That is, the sequence program input from the code input processing section 30 and the comment input processing section 32 based on the human interaction processing by the interaction processing section 28 is created as a ladder diagram described later in the circuit creation section 42, and is subjected to automatic drawing output processing. It is printed out by the unit 46, and outputted as a file 100 by the PC program output processing unit 38. At this time, an address is automatically assigned to each instruction word by the PC automatic address assignment processing section 36.

A sequence program is generally created as a ladder diagram. The ladder diagram consists of addresses, command words, signal names, etc.

FIG. 9 shows an example of a ladder diagram.

An address is assigned to each instruction word so that it is unique within at least one PCl3, that is, it does not overlap with other addresses. In this figure, “0
011°, "2011", etc.

In addition, the command word is represented by a symbol in the figure, and is a command (-to) that specifies conditions related to the output of a signal,
Represents a command related to outputting a signal (output command “-〇-”).

For example, the unit 14 is in "continuous operation", "in operation",
Captures operating status such as "machining complete".

In order to cause a necessary operating state among these operating states to occur under necessary conditions, it is necessary to define an output command and an output condition related to this operating state on the sequence program. Command words define these.

On the other hand, the signal name is shown as characters such as "11RIA", "11DI8", etc., and represents the command word uniquely represented by the address in a form readable by the user.

For example, the signal name "11RIA" is the first input signal and indicates "continuous selection." Also, “IIDIA”
is PCl3 or total P in the transfer machine
The arrangement of the C20 and the operation commands of the PC13 or the comprehensive PC20 are shown.

FIG. 10 shows the latter, that is, the screen layout rules for signal names including placement and operation commands.

Here, the arrangement of the PCI 3 or the general PC 20 in the transfer machine refers to the correspondence between each PCI 3 or the general PC 20 and the unit 14 or 16.

For example, as shown in FIG. 6, when units 14 are located on both sides of the transfer bar 12, this unit 1
Each PCl3 can be classified depending on whether PCl 4 is on the left side or right side of the transfer par 12. It can also be classified based on which station 10 it belongs to. The arrangement of the PC13 or the overall PC 20 can be expressed using such divisions.

Further, the operation command corresponds to the operation state of each unit 14, and indicates the control content of the corresponding unit 14.

Therefore, the output command related to the control of each unit 14 can be uniquely expressed by a signal name that is a combination of these pieces of information, that is, the arrangement and operation commands.

Additionally, this representation is readable by the user, unlike the address, which is also unique.

Specifically, the signal names are assigned in the following configuration.

n1n2XXY Here, nl indicates the number of the station 10 to which the unit 14 belongs, that is, the station number.

In addition, n2 indicates that the unit 14 is the left unit 14-L.
For example, in the case of n2-1, the left unit 14 L −
In the case of n 2-2, it is the right side unit 14-R. Therefore, nl and n2 indicate the arrangement of the unit 14. Therefore, nl and n2 are called device codes.

Furthermore, XXY is an operation command. For example, the operation command is D
In the case of "IA", "D1" indicates the first dummy coil, and "A" indicates the selection of "continuous operation". “Ao is called a function code.

FIG. 11 shows an example configuration of the PCl3. It should be noted that the general PC 20 has basically the same configuration, so a description thereof will be omitted here.

The PCl3 shown in this figure includes a memory section 48 and a CPU.
50. The memory section 48 is a section that stores a sequence program, and includes a command word section 52 that stores command words of the sequence program, an I10 address section 54 that stores addresses, and a signal name section 56 that stores signal names. It includes a link management table section 58 that stores a link management table. The link management table is
This is a table that associates an output command with another PCl3 to be linked in accordance with this output command and data to be received from this PCl3.

The CPU unit 50 also connects a control circuit processing unit 60 that executes control of the corresponding unit 14 based on the contents stored in the memory unit 48, and converts the signal name into an address by referring to the signal name/address correspondence table. I10 address section 54 based on the reference result using the obtained address.
and a signal name information interpreter 62 that refers to the signal name information interpreter 62 .

That is, in the PCl 3 shown in this figure, the corresponding unit 14 is controlled by the control circuit processing section 60 based on the sequence program stored in the memory section 48, and the corresponding unit 14 is controlled based on the sequence program stored in the link management table section 58. Data is supplied to other PCl3 as needed based on the link management table. Conversely, data supplied from other PCs 18 is converted into signal names by the link management table section 58, and based on this result, the control circuit processing section 60 executes control of the corresponding unit 14.

By the way, in the transfer machine, each unit 14
It is common to provide a control status display device to monitor the operation of the controller. Normally, the control status display device has a function as an operation display panel that indicates the operating status of each unit 14, and a function that indicates the flow situation in the transfer machine in a cycle diagram.

FIG. 12 shows the configuration of the control state display device according to this conventional example, and FIG. 13 shows the connection between the control state display device and the PCI3.

The control status display device 64 shown in FIG.
20 with a screen output function, and a control section 66 having a configuration similar to that of the PCl3 shown in FIG. 11, and a screen output section 6 connected to a display device such as a CRT.
It consists of 8 and.

Further, as shown in FIG. 13, the control status display device 6
4 is connected to each PCl3 via a link line 22. That is, each PCl 3 and the control status display device 4
2 are provided with interfaces 70 and 72 for connection to the link line 22, respectively.

The display on the control state display device 64 is the display on the operation display panel or the cycle diagram as described above. FIG. 14 shows an example of an operation display panel, and FIG. 15 shows an example of a cycle diagram.

First, the operation display panel displays the operating status of each unit 14 by signal name. For example, display 104-A
indicates "continuous operation" of the unit 14 related to display 102, display 104-G indicates "operating", and display 104- indicates "machining completed".

These displays are provided corresponding to each unit 14. In addition, the cycle diagram may be, for example, a certain unit 14
It is a diagram showing operation transition of equipment in .

Such display of the operating state of each unit 14 is performed according to a screen display program and a screen operation program.

That is, in addition to the aforementioned sequence program, a screen display program for creating a screen format in the control status display device 64 is required. This screen display program is a program that generates and displays a screen in a predetermined format (for example, in the form of an operation display panel) on the screen of the display device. be done.

Also, when driving the transfer machine, each P
A screen operation program is required to receive signals from Cl3 and perform dynamic display in response to changes in the operating status of each unit 14. This screen operation program is
Like sequence programs, it is created in the form of a ladder diagram. That is, the screen is created to operate according to the output command of the sequence program. A screen operation program is also input to the control status display device 64 from a keyboard or peripheral device 26 (not shown).

In this way, it has hitherto been possible to control the transfer machine and to display its operating status.

[Problems to be Solved by the Invention] However, in the past, it was necessary to create and input a screen display program. Since a large amount of time is required for this preparation and implantation, there are problems such as delays in starting up a plurality of PC control devices and an increase in manufacturing costs.

The present invention has been made with the aim of solving these problems, and is aimed at creating and using screen display programs.
The purpose of the present invention is to eliminate typing and make it possible to start up multiple PC control devices in a short period of time and at low cost.

[Means for Solving the Problems] In order to achieve such an objective, the display screen creation method for a multiple PC control device of the present invention provides
For each combination of arrangement and control state, it is determined whether a corresponding signal name exists as a signal name related to an output command in the sequence program, and the display table associates the result of the judgment with the arrangement and control state of each PC. The screen format is created based on the display table.

The sequence program creation device of the present invention also provides a means for indicating each combination of the arrangement and control state of each PC in production equipment such as a transfer machine and determining whether the combination is included in a sequence program related to an output command. , means for creating a display table that associates each combination with the presence or absence of a signal name, and means for outputting the display table as data.

The control status display device of the present invention determines, for each combination of the arrangement and control status of each PC in production equipment such as a transfer machine, whether the sequence program includes a signal name related to the combination and corresponding to the output command. The present invention is characterized by having a drawing processing unit that determines the above, creates a display table that associates the arrangement and control status of each PC with the result of this determination, and creates a screen format based on the display table.

[Operation] In the display screen creation method for a plurality of PC control devices of the present invention, a display table is created based on the signal names of the sequence program. This display table is a table that shows the arrangement and control state of a PC in production equipment such as a transfer machine, a combination of the arrangement and control state, and associates the presence or absence of a signal name related to an output command. Furthermore, a screen format is created based on this display table.

As a result, a screen format is automatically created according to the contents of the sequence program. Therefore, there is no need to create and input a special screen display program.

Furthermore, in the sequence program creation device of the present invention, for each combination of the arrangement and control status of each PC in the production equipment, it is possible to check whether a signal name corresponding to the combination and related to an output command exists on the sequence program. It will be judged. The result of this determination is associated with the arrangement and control status of each PC. That is, 1. A display table showing these correspondences is created. The created display table is output together with the sequence program, and is supplied to, for example, a control status display device. Therefore, a display table is automatically created at the same time as the sequence program is created, and is used for display on, for example, a control status display device, particularly for creating a screen format.

In the control state display device of the present invention, the signal name of the sequence program stored in the memory section is used for determination in the drawing processing section.

This determination is to determine, for each combination of the arrangement and control status of each PC in production equipment such as a transfer machine, whether a signal name related to the combination and indicating an output command exists on the sequence program. The result of this determination, that is, the presence or absence of a signal name, is associated with the combination of the arrangement and control status of each PC. Thereby, a display table related to this correspondence is created by the drawing processing section. Furthermore, a screen format is created by the drawing processing section based on the display table. Therefore, a screen in a predetermined screen format can be displayed without creating or inputting a particular screen display program.

[Examples] Hereinafter, preferred embodiments of the present invention will be described based on the drawings. Note that the same components as those of the conventional example shown in FIGS. 6 to 15 are denoted by the same reference numerals, and the explanation thereof will be omitted.

FIG. 1 shows a block configuration of a sequence program creation device according to a first embodiment of the present invention.

In this embodiment, an equipment monitor screen information creation section 74 according to a feature of the present invention is provided.

The equipment monitor screen information creation unit 74 is a part that creates a display table according to a feature of the present invention.

FIG. 2 shows the concept of creating a display table in this embodiment.

In this embodiment, for example, when a user inputs a sequence program related to the ladder diagram 2°O through interactive manual processing, a display table related to the feature of the present invention is created by the equipment monitor screen information creation unit 74. i In other words, as mentioned above, the sequence program
The name includes the location and operation instructions of the PC18 in the transfer machine. The arrangement of PCl3 included in the signal name is composed of a station number nt and a variable 02 indicating whether the corresponding unit 14 is on the L side or the R side. If this variable 01 is taken as a column and the variable n2 is taken as a row, the arrangement of PCl3 in the transfer machine will be shown as the arrangement table 220 in FIG. 2.

Furthermore, each P'C1, 8 is set to "continuous operation" or "in operation".
Layout table 22
0 is a table divided into six in the row direction.

The equipment monitor screen information creation unit 74 in this embodiment is as follows:
It is determined whether the operation command shown as each grid in the layout table 220 exists as an output command in the sequence program, and if it exists, the flag corresponding to each grid is set to "1", and if it does not exist, the flag corresponding to each grid is set to "1". "0-" in case
and set each.

After the above-described operations, the equipment monitor screen information creation section 74 creates a display table 210 including the arrangement of the PCl3, operation commands, and flags, and causes the PC program output processing section 38 to output it together with the sequence program.

FIG. 3 shows in more detail the operation of creating the display table 210 in this embodiment.

First, when the process starts, initial set 300 is executed. This initial set 300 is, for example, the fourth
This is done according to the flow shown in the figure. That is, in the initial set 300, " is the operation command SIGNA
L is set to ``(302), address PCADD of the sequence program is set to 0 (304), instruction word SYMDATA indicated by address PCADD is set to ``(306), and address ADDDATA of the sequence program indicated by address PCADD is set to ``(308). ), address PCA
Sequence program signal name 5YGD indicated by DD
ATA is "(310), and the sequence program comment COM D AT indicated by address PCADD is
A or “ ” (312), mth line of the display table,
Nth column flag FLGDT (m, n) or all m,
O for n (314), the operation command classification variable is 1
or O (316), m or 0 (318), n becomes 0 (3
20), each is initialized. Here, m is 1 or more M
The following values are taken, and n takes a value of 1 or more and N or less. That is, the display table 210 is a table with M rows and N columns.

When the initial set 300 is executed in this manner, the structure of the signal name is defined (322).

That is, the signal name SGNNAME is defined as SGNNAME-n1+n2+S IGNAL. Here, nl is the station number to which the unit 14 belongs, and n2 is the station number to which the unit 14 belongs, and n2 is the station number to which the unit 14 belongs.
This is a variable indicating whether it is the L unit or the right unit 14-R.

When this definition 322 is executed, the operation command classification variable 1 is then set to 1 (324). That is, in the initial set 300, the motion classification variable 1 is initially set to 0, and in step 324, by adding 1, the motion command classification variable 1 is set to 1.

Decision 326 is then performed. In decision 326,
It is determined whether the operation command classification variable 1 is 1 or not. Here, since the operation command classification variable No. is set to 1 in step 324, after determination 326, step 3
28 is executed. In step 328, the operation command 5IGNAL is set to "DIA". This “D.I.
A" indicates continuous operation selection by the dummy coil D1 as described above.

After this, the instruction word SYMDATA contains the address PCADD.
The instruction word 5EQDT (PCADD) indicated by is set (330). At this time, since the address PCADD is set to "0" in the initial set 300, the instruction word SYMDATA related to the first address is read out. After execution of step 330, judgment 3
32 is executed. In decision 332, it is determined whether the instruction word SYMDATA indicates "END". Here, if it is determined that "END" is indicated, the process ends (D34), and otherwise, determination 336 is executed.

In decision 336, it is determined whether the instruction word SYMDATA is an output instruction. Here, if it is determined that it is not an output command, the flag FLGDT (m, n)
Since there is no need to set , the process moves to step 338 and the address PCADD is incremented by one. After step 388 is executed, the process moves to step 330 described above to detect an output command, and the command word SYMDATA is read.

If it is determined in determination 336 that the command word SYMDATA is a command word indicating an output command, step 34
0 is executed. In step 340, the signal name S IGDT (SY
MDATA) is set to signal name 5IGDATA.

After this, decision 342 is performed. In determination 342, the operation command S I set in step 328 is
GNAL and the signal name S determined in step 340
It is determined whether or not the operation command included in IGDATA matches. Here, if it is determined that they do not match, the process returns to step 324 described above, and the process is continued after the operation command classification variable 1 is incremented.

Note that if it is determined in the determination 326 that the motion command classification variable l is not 1, a determination 344 is executed and it is determined whether the motion command classification variable 1 is 2, and so on. A similar determination is made for all possible values of the operation command classification variable 1. Further, if the operation command classification variable 1 is determined to be "2" in the determination 344, the operation command 5IGNAL is set to "DIG".
The operation command 5IGNAL is set to correspond to each grid in the layout table 220, such that "is set." After such settings are made, the process moves to step 330 as usual after step 328, and the above-mentioned process is performed. The action is repeated.

If it is determined in the determination 342 that they match, the number of rows n is incremented by 1 (348). Subsequently, a determination 348 is performed to determine whether the number of rows n matches the station number nl, and if they do not match, step 346 is subsequently performed to increment the number of rows n. Here, the station number n1 is the signal name S I GDAT
It is included in A. By repeating this, the number of rows n is incremented until it matches the station number nt. After this, step 352 is subsequently executed.

In step 350, the number of columns m is incremented by one. Next, decision 354 is executed to determine whether the number of rows m matches variable 02. This variable n is the same as the station number nt described above, the signal name is 5IGDAT.
Included in A. This step 352 and determination 354 also
Step 348 and decision 350 are repeatedly executed, and as a result, the number of columns n and the number of rows m are n and n, respectively.
2.

That is, variable n indicating the arrangement of PCl3 in signal name 5IGDATA 1. n2 is set to the number of rows m rather than the number of columns n.

Additionally, step 356 is executed. In step 356, the number of rows m is set to (n21)(4j+1).With this setting, the number of rows m is converted to a value corresponding to each grid of the layout table 220.

Subsequently, step 358 is executed, and the display table 21
The flag FLGDT (m, n) of 0 is set to 1.

Following this, the initial values of the number of rows m and the number of columns n are set to 01 (360, 362). Then, step 33 mentioned above
8 is executed and the process returns to step 330.

By executing such operations until the end of the sequence program, that is, until "END" is detected in determination 332, the display table 210 is created for the entire sequence program.

Therefore, in this embodiment, the display table 210 is
is created automatically. By supplying the display table 210 created in this manner to, for example, a control status display device, the control status display bag device can generate a screen format using this display table 210. In this case, there is no need to create and input a screen display program into the control status display device, and the man-hours required for this creation and input are unnecessary. Therefore, this reduction in man-hours makes it possible to start up multiple PC control devices quickly and at low cost.

FIG. 5 shows the configuration of a control status display device according to a second embodiment of the present invention. In this embodiment, the memory section 26 is provided with a condition setting section 76 and a drawing screen information section 78, and the signal name information interpretation section 62 is further provided with a drawing processing section 80. The condition setting unit 76 stores a display table according to a feature of the present invention. This display table is created by the drawing processing section 80 based on the signal names stored in the signal name section 56. Further, the drawing screen information section 78 stores a fixed part of the screen format to be displayed on the screen of the display device, for example, a part related to the framework of each grid in the above-mentioned layout table 220. Furthermore, the drawing processing unit 80 creates a screen format based on the display table recorded in the condition setting unit 76.

That is, in this embodiment, a sequence program created and filed as a file by the sequence program creation device 24 is imported via the peripheral device 26, as in the conventional example shown in FIG. The loaded sequence program is stored in the memory section 26. The drawing processing unit 80 creates a display table 210 using the same algorithm as in the first embodiment and stores it in the condition setting unit 76.

The drawing processing section 80 creates a screen format based on the display table 210 stored in the condition setting g576 and the information stored in the drawing screen information section 78. For example, in the display table 210, the flag FLGDT (
For operation commands that are set to "1" or "m" or "1",
A display column is provided in a predetermined portion of the framework read from the drawing screen information section 78. Conversely, the flag FLGDT
(m.

No display column is provided for operation commands where n) is "0".

The screen format including display fields set in this way is
28 to a screen output 68. Screen output section 68
causes the display device to perform display based on the screen format created in this way.

As described above, according to this embodiment, display as an operation display panel, for example, can be performed by interpreting the signal name without creating a screen display program.

In addition, in the above explanation, for example, creation of a screen format related to an operation display panel as shown in FIG. 14 was explained, or alternatively, a screen format related to a cycle diagram as shown in FIG. 15 was explained. You may also have the user create one. In this case, after the signal name having the above-mentioned structure, add a code indicating the corresponding circle and, for example, "40", and
1DIA40'' or the like. In this way, the signal name information interpreter 62 interprets this and flags FLGDT.
(m, n) and cause the condition setting unit 76 to store the screen format related to the cycle diagram. Thereby, a screen format related to a cycle diagram as shown in FIG. 15 can be generated.

Note that in the above embodiment, one station 1
Although the transfer machine in which the station 10 includes two units 14-R and 14-L has been described, it is also applicable to a configuration in which each station 10 includes an upper unit disposed above the transfer par 12. be.

Further, the control status display device may be configured integrally with the general PC 20 or may be configured separately.

Furthermore, only one PC is sufficient.

[Effects of the Invention] As explained above, according to the present invention, a display table is created and a screen format is automatically generated based on this display table, so it is easy to create and input a screen display program. This makes it possible to start up multiple PC control devices quickly and at low cost with less man-hours.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of a sequence program creation device according to a first embodiment of the present invention, FIG. 2 is an explanatory diagram showing the concept of creating a display table in this embodiment, and FIG. , a flowchart showing the operation of this embodiment, FIG. 4 is a flowchart showing the operation of the initial set in FIG. 3, and FIG. 5 shows the configuration of the control status display device according to the second embodiment of the present invention. FIG. 6 is a block diagram showing the configuration of the transfer machine. FIG. 7 is a block diagram showing the configuration related to creating and writing a sequence program. FIG. 8 is a block diagram showing the configuration of the transfer machine. FIG. A block diagram showing the configuration of the device, FIG. 9 is a diagram showing a ladder diagram, FIG. 10 is a conceptual diagram showing the contents of signal names, and FIG. 11 is a diagram showing a ladder diagram.
12 is a block diagram showing the configuration of a PC; FIG. 12 is a block diagram showing the configuration of a conventional control status display device; FIG. 13 is a block diagram showing the connection between the control status display device and the PC; FIG. 14 15 is an explanatory diagram showing an operation display panel, and FIG. 15 is an explanatory diagram showing a cycle diagram. 74...Equipment monitor screen information creation unit 76...
- Condition setting section 78... Drawing screen information section 80... Drawing processing section 210... Display table nl... Station number n2... Variable 5IGNAL indicating L and R side... Operation command SGNNAME ... Signal name PCADD ... Address SYMDATA ... Instruction word

Claims (3)

[Claims] (1) In a multiple PC control device having means for controlling a plurality of PCs arranged in production equipment such as a transfer machine according to a sequence program, and means for displaying the control status of each PC on the screen in a predetermined screen format. , For each combination of the layout and control status of each PC in the production equipment, determine whether a corresponding signal name exists as a signal name related to an output command in the sequence program, and apply the result of the determination to the layout and control status of each PC. A method for creating a display screen for a plurality of PC control devices, characterized by creating a display table that corresponds to a state, and creating a screen format based on the display table. (2) In a sequence program creation device having means for inputting a sequence program and means for outputting at least addresses and command words among the components of the inputted sequence program, each PC in production equipment such as a transfer machine means for indicating each combination of the arrangement and control state of the device and determining whether the signal name related to the output command is included in the sequence program; and a display table that associates each combination with the presence or absence of the signal name. A sequence program creation device comprising: means for creating a display table; and means for outputting data of a display table. (3) A memory unit that stores the sequence program, a control circuit processing unit that takes in data related to the control status from each PC, and a screen output unit that supplies a screen showing the control status of each PC to the display in a predetermined screen format. For each combination of the arrangement and control state of each PC in production equipment such as a transfer machine, the control state display device has a control state display device that indicates whether or not the sequence program includes a signal name related to the combination and corresponding to the output command. Judge, each P
1. A control state display device comprising: a drawing processing unit that creates a display table that associates the arrangement and control state of C with the result of this determination, and creates a screen format based on the display table.