Process control system and program

Abstract

To provide a process control system.SOLUTION: A process control system 10 comprises: means 111 for calculating a transition in the number of objects to be required in a post-process on the basis of post-process work information indicating work on that day in the post-process; means 113 for calculating a transition in the number of objects which can be prepared under the distribution of personnel on the basis of present process work information indicating the order of a plurality of objects which should be prepared in a present process and a standard time required for preparing the objects and information indicating a tact time in the post-process, the distribution of personnel of the present process and the quantity of stock of the object in the beginning of that day; and means 114 for generating information indicating whether or not deficiency occurs in the post-process under the distribution of personnel.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a process control system and a program. [Background technology]

[0002] Patent Document 1 discloses a method for allocating tasks while taking into consideration the differences in the capabilities of each person, and for managing a schedule with the minimum number of people. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2017-211921 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, the above method has room for improvement in terms of managing the process in question while taking into account the progress of subsequent processes.

[0005] An object of the present invention is to provide a process management system and program that contribute to determining the number of personnel to be assigned to a process in consideration of the progress of subsequent processes. [Means for solving the problem]

[0006] The process management system according to the first aspect includes: a means for calculating a downstream process required quantity transition, which is the transition in the number of objects required in a downstream process, based on downstream process work information indicating the work to be done in the downstream process on that day; a means for calculating a cumulative planned quantity transition, which is the transition in the number of objects that can be prepared with the assigned personnel, based on own process work information indicating the order of multiple objects to be prepared in the own process and the standard time required to prepare each object, as well as information indicating the takt time of the downstream process, the assigned personnel for the own process, and the inventory number of objects at the beginning of the day; and a means for generating stock-out information indicating whether stock-outs will occur in the downstream process with the assigned personnel, based on the downstream process required quantity transition and the cumulative planned quantity transition.

[0007] According to this aspect, the user can know whether or not a shortage will occur in the subsequent process when the set personnel (for example, not only the basic personnel but also the personnel considering the relief) is employed. Therefore, the user can know the personnel to be allocated in the own process so that the shortage will not occur in the subsequent process, and can allocate personnel appropriately.

[0008] The process management system of the second aspect, in the first aspect, includes a means for accepting input of information indicating the number of production units on the day, and a means for identifying the post-process work information based on the accepted information indicating the number of production units.

[0009] In this embodiment, the process management system receives input of information indicating the number of production units (e.g., the number of production units) on the day, and identifies post-process work information based on the received information indicating the number of production units. Therefore, the post-process work information can be changed according to the user's input, making it easy to manage processes assuming various patterns.

[0010] The process management system of the third aspect, in the first or second aspect, comprises a means for accepting input of information indicating the number of production units on that day and the number of items in stock at the beginning of that day, and a means for identifying the local process work information based on the accepted information indicating the number of production units and the number of items in stock at the beginning of that day.

[0011] In this embodiment, the process management system receives input of information indicating the number of production units of the day and the number of objects in stock at the beginning of the day, and specifies the own process work information based on the received information indicating the number of production units and the number of objects in stock at the beginning of the day. Therefore, the own process work information can be changed according to the user's input, making it easy to manage processes assuming various patterns.

[0012] A fourth aspect of the process control system is any one of the first to third aspects, wherein the stock-out information includes a graph visually representing the transition of the quantity required for the subsequent process and the transition of the cumulative planned quantity.

[0013] In this embodiment, the stock-out information includes a graph visually showing the transition of the required quantity for the subsequent process and the transition of the cumulative planned quantity, so that the user can visually recognize the stock-out information.

[0014] The process management system according to the fifth aspect, in any of the first to fourth aspects, further includes a means for calculating an inventory capacity trend, which means that if the subsequent process required quantity trend is exceeded, there will be a shortage or risk of a shortage of space to store the target objects as inventory.

[0015] In this embodiment, the process management system calculates the inventory capacity transition. The inventory capacity transition is a transition that means that if the inventory capacity transition exceeds the next process required quantity transition, there will be a shortage or a risk of a shortage of space to store the target object as inventory. Therefore, it is possible to perform process management that takes into account the space to store the target object as inventory.

[0016] The process management system of the sixth aspect is configured, when a process itself is made up of a plurality of tasks, to calculate the cumulative planned quantity trend for one or more tasks among the plurality of tasks through user operation, and to generate the stock-out information.

[0017] In this aspect, the process management system is configured to calculate cumulative planned quantity trends for one or more of the multiple operations and generate stock-out information in response to a user operation when the process itself is made up of multiple operations. Therefore, even when the process itself is made up of multiple operations, the process management system can selectively manage one or more of the operations.

[0018] A program according to a seventh aspect is a program for causing a computer to function as the process control system according to any one of the first to sixth aspects.

[0019] In this aspect, a program is provided for causing a computer to function as the above-mentioned process control system. Effect of the Invention

[0020] According to the present invention, it is possible to provide a process management system that contributes to determining the number of personnel to be assigned to a process in consideration of the progress of subsequent processes. [Brief description of the drawings]

[0021] [Figure 1] 4 is a flow chart showing a user procedure and system processing in the process management system of the embodiment. [Diagram 2] 1 is a diagram illustrating a device configuration and a functional configuration of a process control system according to an embodiment. [Diagram 3] 1 shows production data according to an embodiment. [Figure 4] FIG. 2 is a diagram illustrating the concept of each term using production data according to the embodiment. [Diagram 5] FIG. 13 is a diagram showing an input screen before relief information is input. [Figure 6] 11 is a progress graph before relief information is input. [Figure 7] FIG. 13 is a diagram showing an input screen after relief information has been input. [Figure 8] 11 is a progress graph after relief information has been entered. [Figure 9]FIG. 13 is a diagram showing a process production control board after relief information has been input. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0022] Hereinafter, an embodiment of a process control system according to the present invention will be described with reference to FIGS.

[0023] The process control system according to this embodiment is a system for process control, and can be used to control the following processes. That is, the process is a process (own process, partition wall process) in which an object (e.g., a partition wall) is prepared (produced) in the own process, and the object (partition wall) prepared in the own process is needed in a subsequent process (e.g., an outfitting process). The subsequent process (outfitting process) is managed by takt time, and work (e.g., assembly work) for one production unit (one unit) is performed every specified takt time. For example, if the number of production units per day is 14, the regular operating hours are 7.5 hours (=450 minutes=27,000 seconds), and the takt time is approximately 32 minutes.

[0024] The process control system according to this embodiment is configured to output the following information when predetermined information is input. ·Requires artificial Overtime hours - Progress graph (transition of quantity required for next process, transition of planned quantity for current process, transition of planned inventory quantity, transition of inventory capacity quantity, see Figure 6) · Process production control board (see Figure 9) That is, by using the process management system according to this embodiment (hereinafter sometimes simply referred to as the "system"), the user can obtain the above information and use it for process management.

[0025] [Process, Procedure] An example of user procedures and system processing is shown in chronological order as follows (see Figure 1): 1. The user inputs certain information (S1). 2. The system calculates and displays the required manpower (S2). 3. The user inputs the basic number of personnel to be allocated, referring to the displayed required manpower (S3). 4. The system generates and displays a progress graph or the like when the work is carried out by only the input personnel (S4). 5. The user inputs relief information by referring to the displayed progress graph, etc. (S5). 6. The system generates and displays a progress graph, etc., when a relief pitcher is added to the basic personnel (S6).

[0026] Each stage will be described in detail below. In the following explanation, the partition wall process, which consists of wood cutting, framing, and plaster laying work, will be described as the ``main process'', and the fitting out process, in which the partition wall is assembled into the building unit, will be described as the ``subsequent process''.

[0027] [1. The user inputs the required information.] 5 shows an input screen of this embodiment. As shown in this figure, the system is configured to accept the following information as input by the user: - Takt time (line takt in the figure) -Number of units produced on the day (in the figure, number of units produced) - The stock quantity of the target item at the beginning of the day (in the figure, the buffer)

[0028] (Production data) The system is also configured to be able to acquire the production data shown in FIG. Production data is available for multiple objects (partition walls), The order in which multiple objects should be prepared - The number of the production unit to which each object belongs (assembly number) Processing category and reference time for each object It contains information indicating. The work proceeds in order from top to bottom in the production data shown in Figure 3. Also, the work corresponding to the top row of the production data indicates the first work in the subsequent process (outfitting process) of that day. In other words, work starts from assembly number 771 in the subsequent process (outfitting process) on that day. In this embodiment, the assembly numbers correspond to building units, and it is shown that eight partition walls need to be prepared for the assembly work of the building unit corresponding to assembly number 771, and six partition walls need to be prepared for the assembly work of the building unit corresponding to assembly number 772. Also, 1G in Fig. 3 corresponds to wood cutting work, 3G to framing work, and 4G to plastering work.

[0029] [2. The system calculates and displays the required manpower (first output information).] The system calculates and displays the required manpower based on the input information and production data (see Figure 3). In the example shown in Fig. 5, the required man-hours are output as "1.13" (people) on the same screen as the input screen. The required man-hours here refer to the man-hours required for the task of preparing an object (target task) in the current process. In this embodiment, it is the man-hours required for plastering work in the partition wall process. This shows that 1.13 people are required to complete the plastering work to be performed on that day within the regular operating hours.

[0030] (Calculation of required manpower) The method for calculating the required labor is not particularly limited, but can be performed, for example, using the sum of the reference time and the regular operation time. In this embodiment, the following formula is used. Required manpower (people) = "Total standard time" of tasks belonging to the work range of the current process / Regular operating time (1.13 = sum of reference times from assembly numbers 774 to 788 / 27000) To explain using Figure 4, the "total reference time" for work that belongs to the work range of the current process is the sum of the values ​​enclosed by the dashed line among the values ​​in the column 4G (plaster laying work) of the production data. The "total reference time" for work that belongs to the work range of the current process means the total reference time for work that needs to be done in the current process on that day, and will be referred to simply as the "total reference time" below. The regular operation time is, for example, 7.5 hours (=27000 seconds). The total reference time is calculated by identifying the production data and the range of work to be performed in the own process on that day (own process work range) from the production data.

[0031] In this embodiment, the work range of the current process is specified so that the number of partition walls to be prepared is the same as the number of production units in the subsequent process. As a result, if there is an inventory of 3 units (18 pieces) at the beginning of the day as shown in Figure 4, the same number of units (3 units) of inventory can be prepared at the beginning of the next day. The inventory at the beginning of the day uses the information entered as the "inventory quantity of the target item at the beginning of the day (buffer in the figure)".

[0032] [3. The user inputs the basic number of personnel to be allocated, referring to the displayed required manpower.] The user inputs information indicating the basic number of personnel to be allocated (for example, "1" (person)) into the personnel to be allocated field. At this time, it is preferable for the user to input the largest natural number that does not exceed the output required manpower. In other words, if the output required manpower is "1.13", it is preferable for the user to input "1" as the number of personnel to be allocated. Since a value smaller than the required manpower is input, there is a high possibility that overtime hours or shortages will occur, but this can be dealt with by introducing relief personnel as described later.

[0033] [4. The system will generate and display a progress graph etc. for when the work is carried out by only the entered assigned personnel.] The system generates or calculates and displays progress graphs, process control boards, and overtime hours.

[0034] Fig. 6 shows a progress graph of this embodiment. The progress graph is a graph with the horizontal axis representing time and the vertical axis representing the quantity of objects, visually showing the transition of the required quantity for the next process, the transition of the planned quantity for the current process, the transition of the cumulative planned quantity, and the transition of the inventory capacity. The horizontal axis is the time axis, and time progresses from left to right, but the displayed unit is the assembly number of the next process.

[0035] The transition in the number of items required for the subsequent process is the transition in the number of items required for the subsequent process, and the transition in the cumulative planned number is the transition in the number of items that can be prepared in the current process, including the inventory amount at the beginning of the day. Therefore, the presence of a portion where the downstream process required quantity transition exceeds the cumulative planned quantity transition means that a stockout will occur in the downstream process, and the exceeding value on the horizontal axis indicates the timing of the stockout. In this way, since the progress graph displays the downstream process required quantity transition and the cumulative planned quantity transition in a time-corresponding manner, the user can easily check whether or not a stockout will occur, and if so, when it will occur.

[0036] To generate the progress graph, the system calculates the transition of the quantity required for the next process, the transition of the planned quantity for the current process, the transition of the cumulative planned quantity, and the transition of the inventory capacity.

[0037] (Change in the number required for post-processing) The transition in the number of post-processes required can be calculated based on the production data and the number of production units, and in this embodiment, the calculation is performed by this method. To explain this using FIG. 4, the post-process required transition is calculated by accumulating the number of objects that belong to each assembly number within the post-process work range. As shown in Figure 4, the number of objects belonging to each assembly number is No771: 8 sheets No772: 6 pieces No773: 4 sheets No774: 3 sheets (Omitted) No785: 5 pieces Therefore, the total number of sheets required for each assembly number is No771: 8 pieces No772: 14 pieces (=8+6) No773: 18 pieces (=8+6+4) No774: 21 pieces (=8+6+4+3) (Omitted) No785: 92 sheets It becomes. This is graphed as the “number of subsequent processes required” in the progress graph shown in Figure 6.

[0038] (Changes in the number of planned processes) The planned quantity transition of the own process is the transition of the number of objects that can be prepared in the own process by the set allocated personnel (at this stage, only the "basic allocated personnel" entered and does not include relief). It does not include the inventory quantity at the beginning of the day.

[0039] In this embodiment, the planned quantity transition of the current process is calculated by accumulating the number of objects (planned quantity (i)) that can be prepared within each takt time. i is the assembly number corresponding to each takt time, and in the example shown in the figure, i is a natural number equal to or greater than 771. Change in planned number for own process (i) = Σ(k=771~i) planned number (k)

[0040] The planned number for each takt time (planned number (k)) is the number of partition walls that can be produced within the work time corresponding to that takt time, calculated based on the production data. Planned number (i): Planned number for assembly number i in its own process during its working time Work time(i): Work time corresponding to assembly number i

[0041] In this embodiment, the operation time (i) corresponding to the assembly number i is calculated taking into consideration the remaining time in the immediately preceding assembly number (i-1). Specifically, it is calculated according to the following formula. Working time (i) = remaining time (i-1) + takt time × basic manpower allocation The remaining time (i-1) is the remaining time for the immediately preceding assembly number (i-1). As can be seen from the above formula, the operation time (i) is a value according to the basic manpower allocation, and the more basic manpower there are, the greater the operation time value.

[0042] The reference times belonging to the work range of the current process are accumulated in order, and the number of objects included within the range that does not exceed the work time (i) is set as the planned number for the takt time of that assembly number. Then, the remaining time is carried over to the work time corresponding to the next takt time.

[0043] (Cumulative Plan Number Trend) The cumulative planned quantity transition is the transition of the number of objects that are ready for the next process, including the inventory quantity (buffer) at the beginning of the day. In this embodiment, it is calculated by adding the inventory quantity at the beginning of the day and the planned quantity transition of the current process. Cumulative planned quantity transition = Current process planned quantity transition + Stock quantity at the beginning of the day

[0044] (Trends in inventory allowance) The inventory allowable quantity transition is a transition that means that if the inventory allowable quantity transition exceeds the downstream process required quantity transition, there will be a shortage or a risk of a shortage of space to store the target objects as inventory. In this embodiment, the inventory allowable quantity transition is calculated using the following formula. Inventory capacity transition = Current process planned quantity transition - constant according to the space available for storing inventory

[0045] (Overtime hours) The system also calculates and displays overtime hours. Overtime hours here refer to the overtime hours worked on the current day in the process itself. As shown in Figure 5, before the relief information is entered, "1.5" (h) is displayed as the overtime hours. The method of calculating the overtime hours is not particularly limited. In this embodiment, the time required for multiple tasks included in the work scope of the process to be performed by the set number of personnel is calculated based on a reference time, and the overtime hours are calculated by subtracting the regular operating time.

[0046] [5. The user inputs relief information.] If there is a problem with the progress graph, overtime hours, etc. displayed by the system, the user inputs relief information. If there is a problem with the progress graph, overtime hours, etc., for example, the progress graph indicates that "stockouts will occur in the subsequent process" or if overtime hours are being worked.

[0047] FIG. 7 shows the input screen in a state where relief information has been input. Since the progress graph shown in FIG. 6 (before the relief information is input) indicates that a shortage will occur at assembly number 782, it is preferable for the user to input an assembly number earlier than that as relief information. In the example shown in FIG. 7, assembly numbers 780 and 781 have been input as relief information. Note that "R required time" shown on the input screen in FIG. 5 indicates the time required for relief, and "R unit count" indicates the number of takt times (the number of assembly numbers) for which relief is required. In other words, the system is configured to display the degree to which relief is required (time, etc.), and the user can input relief information appropriately based on this.

[0048] [6. The system will display progress information (progress graph, overtime hours, etc.) that takes relief into account.] The system displays progress information (progress graphs, overtime hours, etc.) that takes relief into account. Specifically, the system changes the work time corresponding to each takt time (each assembly number) taking into account the relief information, and regenerates and displays the progress graph, etc.

[0049] When the relief information is input, the system increases the operation time corresponding to the takt time indicated by the input relief information. In the example shown in the figure, as a result of the increase in the operation times corresponding to assembly numbers 776 and 777, the number of objects that can be produced (prepared) in the own process within the operation times corresponding to assembly numbers 776 and 777 has increased. More specifically, the operation times corresponding to assembly numbers 776 and 777 before the relief information was input are as follows: · Working time (776) = remaining time (775) + takt time × basic staffing · Working time (777) = remaining time (776) + takt time × basic staffing In contrast, the operation times corresponding to assembly numbers 776 and 777 after the relief information is input are as follows: · Working time (776) = remaining time (775) + takt time x (basic manpower + 1) · Working time (777) = remaining time (776) + takt time x (basic manpower + 1)

[0050] In this embodiment, the system is configured so that the operation time corresponding to "No. 776, 777" three units before "Assembly Number 780, 781" which is input relief information is increased. Note that assembly number 789 is a missing number. By configuring in this way, preparation of the target item can be planned with ample time, and a plan can be made that can more reliably prevent shortages.

[0051] FIG. 8 shows the progress graph after the relief information has been entered. This progress graph shows that there is no part where the cumulative planned quantity transition exceeds the downstream process required quantity transition, so there is no shortage. In the parts corresponding to assembly numbers 780 and 781, the slope of the graph of the cumulative planned quantity transition is larger than that of Figure 6. Note that the downstream process required transition does not change from Figure 6.

[0052] FIG. 7 shows the input screen after the relief information has been entered, with "0" displayed as the overtime hours.

[0053] (Process Production Control Board) The system also creates and displays the process production control board shown in FIG. As shown in Fig. 9, the process production control board shows the planned number of pieces for each timetable, the number of pieces required for the next process for each timetable, and the planned inventory number for each timetable. The process production control board also has an input field for the actual number of pieces for each timetable in the process itself. The user can print out the process control board as necessary.

[0054] The above-described process control system is realized, for example, by a general-purpose computer and a specific program (see FIG. 2). When the processor 11 of the computer executes the program stored in the memory 12, the processor 11 functions as a means 111 for calculating the transition of the required quantity for the next process, a means 112 for calculating the required labor, a means 113 for calculating the planned quantity of the current process (transition of the planned quantity of the current process, transition of the cumulative planned quantity, transition of the stock capacity), and a means 114 for generating stock-out information.

[0055] The input device is, for example, a keyboard or a mouse, and the output device is, for example, a display, a speaker, a printer, etc. As shown in Fig. 2, the computer may be connected to a database in which the production data is stored via a network, and may be configured to automatically acquire the production data.

[0056] <Action and effect> Next, the effects of this embodiment will be described.

[0057] The process management system according to this embodiment calculates a downstream required quantity transition, which is a transition in the number of objects required in the downstream process, based on information indicating the work of the downstream process on the day (next-process work information). The process management system also calculates a cumulative planned quantity transition, which is a transition in the number of objects that can be prepared with the assigned personnel, based on own process work information indicating the order of multiple objects to be prepared in the own process and the standard time required to prepare each object, as well as information indicating the takt time of the downstream process, the assigned personnel of the own process, and the inventory number of objects at the beginning of the day. Then, based on the downstream required quantity transition and the cumulative planned quantity transition, the process management system generates stockout information indicating whether stockouts will occur in the downstream process with the assigned personnel. Therefore, the user can know whether or not a shortage will occur in the subsequent process when the set personnel are employed (for example, not only the basic personnel but also the personnel considering the relief). Therefore, by changing the personnel, the user can know the personnel to be assigned in the own process so that a shortage will not occur in the subsequent process, and can assign personnel appropriately.

[0058] In addition, in this embodiment, the process management system receives input of information indicating the number of production units (e.g., the number of production units) on the day, and identifies post-process work information based on the received information indicating the number of production units. Therefore, the post-process work information can be changed according to the user's input, making it easy to manage processes assuming various patterns.

[0059] In addition, in this embodiment, the process management system accepts input of information indicating the number of production units (e.g., the number of production units) of the day and the number of objects in stock at the beginning of the day, and specifies the own process work information based on the accepted information indicating the number of production units and the number of objects in stock at the beginning of the day. Therefore, the own process work information can be changed according to the user's input, making it easy to manage processes assuming various patterns.

[0060] In the present embodiment, the stock-out information includes graphs visually showing the transition of the quantity required for the subsequent process and the transition of the cumulative planned quantity, allowing the user to visually recognize the stock-out information.

[0061] In addition, in this embodiment, the process management system calculates the inventory capacity transition. The inventory capacity transition is a transition that means that if the inventory capacity transition exceeds the next process required quantity transition, there will be a shortage or a risk of a shortage of space to store the target object as inventory. Therefore, it is possible to perform process management that takes into account the space to store the target object as inventory.

[0062] In addition, in this embodiment, the process management system is configured to calculate the cumulative planned quantity transition for one or more of the multiple tasks and generate stock-out information by user operation when the process itself is composed of multiple tasks. Therefore, even if the process itself is composed of multiple tasks, it is possible to selectively manage the process for one or more of the tasks. In this embodiment, the user can make a selection by inputting in the "task selection" field on the input screen (FIG. 5).

[0063] 〔supplementary explanation〕 In the above embodiment, the number of personnel to be allocated is input by the user, but the present invention is not limited to this. For example, the system may be configured to set the number of personnel to be allocated based on the required manpower calculated by the system. Specifically, the system may be configured to automatically set the largest natural number among natural numbers equal to or smaller than the required manpower as the number of personnel to be allocated.

[0064] In the above embodiment, an example was described in which the operation time corresponding to a certain takt time was calculated taking into account the remaining time in the immediately preceding takt time, but the present invention is not limited to this. For example, the operation time (i) may be equal to the takt time multiplied by the number of people allocated (personnel taking into account relief pitchers).

[0065] In the above embodiment, an example is described in which a reference time is used that is determined without taking into account differences in the abilities of each person. However, the present invention is not limited to this, and may be configured to enable process management that takes into account differences in the abilities of each person.

[0066] The process control system according to the present invention can be realized, for example, by a general-purpose computer and spreadsheet software. That is, the term "program" in this specification includes not only general programs but also those equivalent to programs, and may be, for example, a spreadsheet software file. It can be said that the spreadsheet software file specifies the processing to be performed by the computer that runs the spreadsheet software. [Explanation of symbols]

[0067] 10 Process Control System 111 Calculation method for change in required number of post-processes 112 Necessary artificial calculation means 113 Current process plan number transition means 114 Out-of-stock information generating means

Claims

1. A means for calculating a transition in the number of objects required in a subsequent process, which is a transition in the number of objects required in the subsequent process, based on subsequent process work information indicating the work to be performed in the subsequent process on that day; A means for calculating a planned quantity transition of the own process, which is a transition in the number of objects that can be prepared within the takt time of a subsequent process, based on own process work information indicating the order of a plurality of objects to be prepared in the own process and the standard time required for preparation of each object, the takt time of a subsequent process that uses the objects prepared in the own process, and the allocated manpower of the own process; A means for calculating a cumulative planned quantity transition, which is a transition in the number of objects that can be prepared with the allocated personnel, based on the information indicating the planned quantity transition of the process itself and information indicating the inventory quantity of the objects at the beginning of the day; a means for generating stock-out information indicating whether or not a stock-out will occur in the downstream process if the allocated personnel are used based on the transition of the downstream process required quantity and the transition of the cumulative planned quantity; A process control system equipped with:

2. means for accepting input of information indicating the number of units to be produced on that day; A means for identifying the post-processing operation information based on information indicating the received number of production units; The process control system according to claim 1 ,

3. means for accepting input of information indicating the number of units to be produced on that day and the number of items in stock at the beginning of that day; A means for identifying the process operation information based on information indicating the number of production units received and the number of items in stock at the beginning of the day; The process control system according to claim 1 or 2, comprising:

4. The stock-out information includes a graph visually representing the transition of the required quantity for the post-process and the transition of the cumulative planned quantity. The process control system according to any one of claims 1 to 3.

5. A means for calculating a transition of an allowable inventory quantity, which means that if the transition of the required quantity for the post-process is exceeded, there will be or may be a shortage of space for storing the object as inventory. The process control system according to any one of claims 1 to 4, further comprising:

6. When the process itself is composed of a plurality of operations, the cumulative planned quantity transition is calculated for one or a plurality of operations among the plurality of operations in response to a user operation, and the stock-out information is generated. The process control system according to any one of claims 1 to 5.

7. A program for causing a computer to function as the process control system according to any one of claims 1 to 6.

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