TWI322967B - - Google Patents

Description

1322967

TECHNICAL FIELD OF THE INVENTION The present invention relates to a method for determining a station demand in a work order, and more particularly to a method in which a Current Stage Push Quantity and/or a secondary station are present. Next Stage Pull Quantity determines the method of station + in the work order. Don't ask for [Prior Art] The most important goal of every operating plant is to achieve customer satisfaction and maintain productivity on time. In the manufacture of semiconductors, the production line always runs four hours a day, so how to maintain the balance of the production line and the progress of the production plan is the most difficult task for planners and manufacturers. One of the important factors that affects Work In Process (WIP) traffic, such as resources, process judgment, WIP requirements, unexpected system errors, = other factors, etc. is the upstream and downstream sites. Supply and demand relationship. In the process of work-in-progress, there are many stations that need to be treated a'e. Therefore, these stations may become bottlenecks due to their characteristics, such as piles of recipes or long process times. When passing through this, the WIP flow sometimes appears to be abnormal. If the false system cannot identify these abnormal conditions, then the operator will have something to do, and the situation will become more and more serious. For example, if there is a problem, it may stop supplying a certain work in progress. At this time, ^ when the machine is used for the manufacturing process of this product, the process will be carried out due to the lack of work-in-progress, and the production risk of such a product will not be achieved, resulting in waste of machine capacity and affecting the production line. Balance ="

1322967

Correction The death operator must follow the process instructions specified by the supervisor. This ί i ΐ 11 usually derives white production plans and production targets. However, the actual situation is changing at any time, so the operator needs a set of construction, 糸 = to know what it should do. The dispatching system is the suggestion that the system is available in the dispatched work-in-progress list. [The operator can understand that the W products are waiting for their work, and which are in the Q: The list of products includes explicit information, such as programs, products, etc., such as time limit (Q ueue T ime L imit), or follow-up in the product, and the implicit information, such as urgency and demand. . It is generally rumored that the operator will only check the first batch of goods in the work in process list, that is, there are 90 batches in f, and this is only to save time. The operator has checked all the information in the list - it will take a few minutes, but it may be necessary to take only one batch of the product for the process. If the first batch is an experimental lot, the operator will spend more time finding the production lot or just taking the first lot, and both options will result in wasted time. Therefore, a properly designed dispatch system will be available to the operator for the proposed job delivery list and the recommended principles should be consistent with the production plan and objectives, maintain the line balance, and meet the performance of the approved line project. (Confirm Line Item Performance; CLIP) 'The CLI IP is used to evaluate the ability to deliver on time. As mentioned earlier, the dispatch system is designed to provide a suggested dispatch order to each stop. There are many things to be aware of when generating this dispatch ticket. When the system obtains the appropriate work in process list from the Manufacturing Execution System (MES), the next step is to make these

IIH1 Page 7 1322967 Case No. 92105033 修正 Amendment V. Invention Description (3) The recommended priority of the product is embedded in the work order. In addition to the upstream and downstream needs, the dispatch order must consider other factors, such as whether it is waiting for time limit, Super Hot Lot, emergency, #Hot Lot, re-batch Reworking Lot, etc. The dispatch system will arrange the WIP list for different stations based on these factors. In the above-mentioned dispatched work order, the most important factors are the support flag (Back F 1 ag), the waiting time limit, and the WIP priority because of the different characteristics of each station. At each stop: ΐ 个 a factor is a factor that is considered first. Here is a brief description of the three reasons. When the original station cannot reschedule another station, the planner can provide the necessary resources. In this way, a machine is shared to support the processing of these additional loads at the time of production and maintain the balance of the production line as the first place in the life. Therefore, the support flag of the product is always in the work order. In addition, because the product must be in the special expiration date or other program restrictions, the engineer must process it in the next step for this. Therefore, the time limit expires t-station to establish a waiting time limit. If you wait for the effectiveness of the chemical, ^, the product can be re-executed in the previous step to maintain the product can not be again ^ ~ = will lead to waste of machine capacity; and sometimes can be treated with scrap. = rush - a step, so in the end this product is only waiting for the time limit of the ^I avoid waiting time limit expired, these are different. 〇 must have a higher order to quickly pass the station

Page 8 1322967

Case No. 921050 ribs V. Invention Description (4) In addition, when a new batch of goods is scheduled, it will also be 同时 : : : : : : : : : : : : : This priority is only a rough classification criterion for distinguishing between different priority levels. In addition to priority, an external priority (External Priority) can usually be assigned to the shipment. By combining priority with external planners and manufacturers, it is possible to define certain special grades of σ '2 with regard to the importance of such work in progress... there will be; some grades of goods, such as very urgent batches Goods, emergency delivery = ^ Mobile Shipping (Slow Moving Lot) #. Since these levels of by-product information are therefore ranked in priority and external priority, the order is a practical basic practice.卩疋 Handling of the goods Another 'in many machines including bottlenecks, the station needs to send the fourth factor in the work order to be considered. In the station such as the furnace tube: will = can not be effectively managed, it is easy due to the long process time of the furnace tube two = ^: Therefore, it is necessary to seek a decision in the dispatching list of the station demand = $ invention content] The object of the invention is to provide a method of determining the dispatching of a worker, which has the following advantages. For the bottleneck station, now, = need, the demand can provide instructions for the operator to follow up the job, so as to adjust the rate of the f'1 to maintain the balance of the production line. Another purpose of the W-in-process flow is to manage resources in a site that provides a decision-making work order. Make the planer easy

1322967 _ Case No. 92105033_Yearly Revision _ V. OBJECT DESCRIPTION OF THE INVENTION (5) A further object of the present invention is to provide a method for determining the demand for a station in a dispatched work order by using the average push/pull amount The rule is to assist in arranging the unbalanced process flow generated in the previous operation, so any abnormal changes can be repaired immediately. In accordance with the above objects of the present invention, a method of determining the demand for a station in a work order is proposed. In a preferred embodiment of the present invention, the method for determining the site demand in the work order includes at least: providing a plurality of work-in-progress to the station, wherein each work in process has a work order record, and the work order is The record includes a number of station pushes and/or a number of station pulls; and by comparing the number of station pushes and/or the number of pulls of the station record for each work order, to select a maximum station push One of the quantity or one of the largest sub-station pulls of the work order record is in-process to perform the process of the station. In addition, when the number of station pushes can be the total number of pushes of the station, and the formula of the total number of pushes of the station is the maximum value [〇, ST (when station) - SM (when station)], where ST (when station) is The target value of one of the in-process production points of each in-process product, and SM (when the station) is the number of WIPs completed. Furthermore, the number of stations to be pushed can be the average number of pushes at the station, and the formula for the average number of pushes at the station is the maximum value [0, ST (when station) x first time / second time - SM (when station) ], where the first time can be the number of hours that have passed, and the second time can be 24 hours. In addition, the number of pulls of the secondary station can be the total number of pulls of one station, and one of the total number of pulls of the station is the maximum value [0, ST (secondary station) - SM (secondary station) - SC (secondary station)], wherein ST (secondary station) is the production target value of one of the secondary stations, SM (secondary station) is one of the secondary stations, the number of work in progress has been completed, and SC (secondary station) is one of the products waiting for the process at the station. Quantity. Or, times

Page 10, 1322967 5, invention description (6) The number of movements can be the average number of pulls at one station, and one of the average number of pulls of this station is the maximum value [〇, ST (secondary station) x first time / second Time SM (secondary station) - sc (secondary station)], wherein the first time may be the number of hours that have passed since the second time and the second time may be 24 hours. = This, with the application of the present invention, can have the following advantages. For bottlenecks, the site requirements can be used to adjust the in-process flow rate to maintain the balance of the production line. The application of the present invention prevents the occurrence of traffic jams in the process flow, thereby enabling the planner to easily manage resources. By applying the present invention, it is possible to assist in arranging the unbalanced process flow generated in the previous work by using the method of the average push/pull amount, so that any abnormal changes can be repaired immediately. [Embodiment] There is a method for determining the demand for the station in the work order. The requirements of the station, f, i, station, need to understand the definition of the demand. That is, the production line keeps running, planners and manufacturers will still set the estimated number of wafers for all stations in the daily y: gold so-called station == production = must do everything possible to handle the system & , Yida: The basic principles on which each station j:::= is based on the invention are as follows. Suppose station two ‘value. Station, and it can accept from many other stations in the j-8 bottleneck = poor performance, then the product flow will block here, g right = station A will be stagnant... therefore, there must be I, Push: WIP in products\

Page 11 1322967 Case No. 92105033 Date of the year Amendment V. Description of invention (7) One station at a time to remove the WIP in progress. Based on this point of view, it is possible to consider giving a higher level of processing order for the WIP to be promoted. Therefore, a quantitative data is needed to provide such information. Please refer to the schematic diagram of the preferred embodiment of the present invention as shown in FIG. In Fig. 1, before the product 1 1 0, the work item 1 2 0, and the work product 130 have completed the previous process and are located at the station 1 等待, waiting for the operator to select one of them to perform the station 1 0 0 Process. Work in process 110 has a dispatch ticket record 1 1 2, and this dispatch ticket record 11 2 is one of the work orders that the operator sees on the computer screen. The work order record Π 2 includes the batch number 〇〇 (H, priority is 3, no waiting time limit, station AAA, and the number of stations pushed to 80). Similarly, work in progress The work order record 122 of 12 0 includes the batch number 0002, that is: the 罹 罹 3, no waiting time limit, the station is b BB, and the number of stations pushing is 1 3 0, and the work in progress 1 3 〇 The dispatch order record 1 3 2 includes information such as batch number 0 0 0 3, priority 3, no waiting time limit, station CCC, and station push quantity 50. Later, this manual will explain How to create a work order record 112, send a work order record 122', and send a work order 132 in the station to promote the number of stations, which can be the total number of pushes and the average number of pushes on the station In the case of the station 100, the station 3 5 ί H, the dispatch ticket record 122, and the station record 132 in the dispatch ticket record 132 can be separately calculated by the following equation (1). The number of stations promoted in the work order record is the number of WIPs in each station, or Each station is not required to push the number of views made οπ. Order ST () on behalf of other stations target, and let SM () on behalf of

Page 12 1322967 --- Cable No. 92105033 Year of the day chromium 1 V. Invention description (8) ' -- The number of stations has been moved, then the formula for the total number of stations pushed as the equation (丄) is not: f station total push Quantity = maximum [〇, ST (when station) - SM (when station)] (1) A batch of goods has been completed in one stop, and the process is called that it has completed the movement in this station'. Therefore, the above equation (1) The subtraction in the middle is the total number of finished products that have been completed in the future. In practice, the average number of stations can be used to further emphasize the urgency between stations. For example, if the total number of pushes of station B and station C is ί 0 〇 and 2 0 0, respectively, the process time of station B is 20 minutes and 5 minutes for each batch. For the station, it will take another 200 minutes to reach the target value. For the station c, it only takes another 100 minutes to reach the target value. Therefore, the urgency of a certain station can be further calculated by equation (2). ~ When the station average push quantity = maximum value [〇, ST (when station) χ Τ / 24 - SM (when station)] (2) where Τ is the number of hours that have passed since that day. The meaning of the above equation (2) is as follows. If the process is going very smoothly, the number of WIPs that can be processed per hour is ST (when station) /24. Therefore, until a certain time of day τ, the number of WIPs that have been theoretically completed should be Tx ST (when station) /24. However, the actual number of WIPs completed is SM (station), so the difference between the two is the target value that has not been reached in the case where T hours have passed. The larger the value, the more urgent it is for the corresponding work product. Since equation (2) is a concept derived from the average process speed, it is called the average push amount at the station.

Page 13^22967 Month Correction T According to equation (1) or equation (2), it can be calculated that the work order record in the first picture...12, the work order record 122, and the work order record 132 are pushed in the station. in. Among them, the number of station pushes in the dispatch work record 122 is the largest among the three (1,300), so the operator may consider taking the WIP 1 2 0 for the process. The following describes the number of pulls in the secondary station. The number of pulls in this station can have two forms: the total number of pulls of the secondary station and the average number of pulls of the secondary station. Assume that the machine D is the bottleneck, and it can supply the work in process to many others. Stations, and stations E and F are the two stations that will be on the machine D. When the operator wants to decide which WIP should be processed first on the D, it can make a decision by comparing the total number of pushes at the station and the average push at the station. However, there may not be many upstream stops before the machine D. In fact, there may be many downstream sites after machine D, and some of them need many WIPs to achieve their target values. Therefore, based on this point of view, another quantitative data is provided in the present invention to provide the above information. Please refer to the schematic diagram of the second station for pulling the work in the preferred embodiment of the present invention shown in FIG. In Fig. 2, before the product 11 〇, the work item 1 2 〇, and the work item 1 30 have completed the previous process and are located at the station 1 等待, waiting for the operator to select one of them to perform the station 1 Process ^In-Product 11 has a work order record 114' and this work order record 11 4 is one of the work orders seen by the operator from the computer screen. The work order 114 〇 派 工 114 记录 114 includes the batch number 0001, priority 3, no waiting time limit, station AAA, secondary station XXX, station push number 8 〇, and times

1322967

The number of stations pulled is 120 and so on. In the same way, in the work order record 12 4 of the product ι2〇, the batch number is 〇〇〇2, the priority is 3, there is no waiting time limit, the station is BBB, the secondary station is γγγ, and the number of stations is 6〇. And the secondary station pulls, the amount is 90 and other information, and the work order record 134 in the product 13 includes the batch number is 0 0 0 3, the priority is 3, there is no waiting time limit, the station is ccc, the second is Zzz, when the number of pushes on the station is 5〇, and the number of pulls on the secondary station is 1〇, etc. = later, this specification will explain how to determine the dispatch soap record llj, the dispatch work order record 124, and the dispatch work order by the present invention. In the number of secondary station pulls in record 134, the number of pulls in the station may have two forms: the total number of pulls of the secondary station and the average number of pulls of the secondary station. When the machine D of the station 100 is used as the in-process product of the process equipment (the station 2 AA, the work in the product m (the station is the Liguang and the in-process product called the station, the corresponding station number can be used) Check with the product batch number for the subsequent station XXX 200, the secondary station γγγ 300, and the secondary station ζζζ 0. Once you know the subsequent station, you can use the following equation (3) 2 : : Ϊ 5 total work in progress The number '* is said to be: the total number of work-in-progress that the secondary station must pull from the station. = number of movements = maximum [0, ST (secondary station) - SM (secondary station) one sc (times ί == this station) ) is the number of WIPs waiting at the secondary station. Since the sub-station can wait for the process to be processed, it must be subtracted from the sub-station to get the sub-station to pull xxx 2QQ# from the station, because there is no place to live. The product is waiting for the argon process at the secondary station 2GG, so the number of η gods is counted in the calculation of the dispatch.

Page 15 1J22967 1J22967 Amendment Case No. 92105033 V. Description of invention (11) When the total number of stations is pulled, SC (secondary station) is zero. On the other hand, since the product 340 is waiting for the process at the secondary station YYY 3, the sc (secondary station) is not zero when calculating the total number of pulls of the secondary station in the dispatched work list S 24 . Similarly, since the work in process 440 is waiting for the process at the secondary station zzz 4, the sc (secondary station) is not zero when calculating the total number of secondary stations in the dispatch ticket record 134. Similarly, the average number of pulls of the secondary station of equation (4) can be used to further emphasize the urgency between stations. The average number of pulls in the station = maximum value [〇, ST (secondary station) x T/2 4- SM ( Secondary station) —SC (secondary station)] (4) where Τ is the number of hours that have passed since that day. The meaning of equation (4) is as follows. If the process is going very smoothly, the number of WIPs that can be processed per hour at the secondary station is ST (secondary station) / 24. Therefore, until a certain time of the day, the number of WIPs completed by the theoretical last station should be Tx ST (substation) / 24» but the number of WIPs actually completed by the substation is SM (substation), so The difference between the two is subtracted from the SC (secondary station) and the average number of times the station can be used when T has passed T hours. The larger the value, the more urgent it is for the corresponding work in progress. Since equation (4) is the concept from the average process speed, it is called the average number of pulls in the secondary station. According to equation (1) or equation (2), the number of station pushes in the dispatch work order record 11 4, the dispatch work order record 1 24, and the dispatch work order record 134 in FIG. 2 can be calculated, and according to the equation (3) Or Equation (4) can calculate the number of secondary station pulls in the dispatch order record 114, the dispatch early record 124, and the dispatch rate 134 recorded in FIG. Among them, the number of stations pushed in the work order record 11 4

Page 16 1322967 Λ_η a Amendment No. 92105033 V. Invention Description (12) Among the three is the largest (80), and the number of dispatched work orders 114 is also the largest among the three (12〇), so The operation is performed by using the product 110 to perform the process. Beyond the priority of 贝ίϊΐ; in the other stations of the neck station, the demand for the station usually means one of the factors to be considered in the dispatch of the work order. In the case of a furnace tube, if it cannot be effectively managed, it is easy to produce a product due to the length of the furnace tube. The above-mentioned decision of the present invention is based on the fact that when the work is carried out on a station such as a furnace tube, the law of motion can be used to exclude the situation of the in-process product before the station of the furnace tube. , Qiao Ning Station, may receive many products from the upstream station at the same time, and provide WIP to many downstream stations. By using the method of simultaneous use of the number of stations, the difference between the quantity of the station and the number of people pulling the number can be compared, so that the operator can be given priority as to which of the products to be used. in accordance with. It will be apparent from the above-described preferred embodiments of the invention that the application of the invention may have advantages. For bottlenecks, consider the site requirements to provide an indication of the operator's subsequent operations' to adjust the WIP flow rate to maintain the line balance. Further, it is apparent from the above-described preferred embodiments of the present invention that the application of the present invention can prevent the occurrence of traffic jams in the process flow, thereby enabling the planner to easily manage resources. Furthermore, it will be apparent from the above-described preferred embodiments of the present invention that by applying the present invention, it is possible to assist in arranging the unbalanced shoe flow generated in the previous work by using the rule of the average pushing/pulling amount, and thus any abnormal changes are Instantly

Page 17 1322967 _ Case No. 92105033_Yearly 曰 Amendment _ V. Description of invention (13) to be repaired. Although the present invention has been described above in terms of a preferred embodiment, it is not intended to limit the invention, and it is obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims.

Page 18 1322967 _ Case No. 92105033_Year 曰__ BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing a station pushing a work in accordance with a preferred embodiment of the present invention. Figure 2 is a schematic illustration of a secondary station pulling a work in progress in accordance with a preferred embodiment of the present invention. [Simplified Description of Component Representation] 100: When Station 110: Work in Process 112: Assignment Order Record 114: Assignment Order Record 120: Work in Process 122: Assignment Order Record 124: Assignment Order Record 130: Work in Process 132: Work Order Record 134 : Work Order Record 2 0 0 : Secondary Station XXX 30 0 : Secondary Station YYY 340 : Work in Process 400 : Secondary Station ZZZ 440 : Work in Process

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Claims (1)

1322967 Case No. 92105033 Λ_η Amendment 6. Scope of Application for Patent 1. A method for determining the requirements of a station in a work order, including at least: providing a plurality of work in process (WIP) to a station, wherein Each of the work-in-progress items has a dispatch order record, and the work order record 47 includes at least one batch number and one stop; using a dispatch system to calculate the plurality of station-in-progress pushes of the work-in-progress according to the following equation Quantity: When the station total push quantity = maximum value [0, ST (when station) - SM (when station)]; where ST (when station) is the target production value of one of the station products, and the SM (when The station has completed the number of WIPs for one of the stations; using the dispatch system to add each of the station push quantities to the corresponding work order record; and using a display device to display each of the work orders The dispatching order of the product is recorded for an operator to select one of the in-process products according to one of the highest number of the station-driven quantities, wherein the one of the in-process products corresponds to the Some pushes The greatest amount of. 2. The method for determining the station demand in the work order as described in item 1 of the patent application, wherein the work order record further includes a station, and the method further comprises: using the dispatch system to calculate a first a second equation to obtain a total number of pulls of each of the plurality of secondary stations at the station, wherein the second Page 20 1322967 _ Case No. 92105033_ Year Month Day Correction _ VI. The scope of the patent application scope is: Total number of secondary stations = maximum value [0, ST (secondary station) - SM (secondary station) - SC (secondary station) Where the ST (secondary station) is the target value of the work in progress of one of the stations, the SM (secondary station) is the number of WIPs completed for one of the stations, and the SC (substation) is at the time The station waits for the number of work in process of one of the processes; uses the dispatching system to add the total number of pulls of each of the secondary stations to the corresponding work order record; and uses the display device to display the total number of pulls of the secondary stations. 3. The method for determining the station demand in the work order as described in claim 1 of the patent scope, wherein the work order record further includes a station, and the method further comprises: using the dispatch system to calculate a first a second equation to obtain an average number of pulls of each of the plurality of secondary stations at the station, wherein the second equation is: the average number of pulls of the secondary station = maximum value [0, ST (secondary station) x first time /Second time - SM (secondary station) - SC (secondary station)]; wherein the ST (secondary station) is the target production value of one of the stations, and the SM (secondary station) is one of the stations Completing the number of WIPs, and the SC (substation) is the number of WIPs waiting for one of the processes at the station; using the dispatch system to add the average number of pulls of each of the substations to the corresponding work order record And using the display device to display the average number of pulls of the secondary stations. Page 21 1322967 SS—92105033 VI. Application for Patent Scope 4. The method of determining the dispatched work as described in item 3 of the patent application, wherein the first time is the demand for the station in the I that has passed the day is two hours, and the number of hours includes at least : The work order record includes at least a plurality of work-in-progress stations, wherein the work-in-progress has a batch number and a station-based demand for the work in the 5. Each of them is assigned to the work order; a dispatch system is used to calculate the average number of pushes of the station at the station according to the following equation: When the station average push quantity = maximum value [〇s / second time one SM (when Station)]; ', Tian where the ST (when the station) is the station--depreciation, and the SM (when the station) is one of the stations has 6 〇 σ production targets using the dispatch system will be And the number of the station is recorded, and the number of the S-station is added to the corresponding display device to display the work order records of each of the in-process products. An operator based on the average number of pushes at the station One of the largest to select one of the in-process products to perform the process, wherein the one of the in-process products corresponds to the largest of the average number of pushes of the stations. 6. Determining a method for dispatching a demand in a work order, wherein the first time is the number of hours that have passed, and the first I Page 22 1322967 Case No. 92105033 _η Amendment VI. Patent Application Scope 2 The time is 24 hours. 7. The method for determining the station demand in the work order as described in item 5 of the patent application, wherein the work order record further includes a station, and the method further comprises: using the dispatch system to calculate a first a second equation to obtain a total number of pulls of each of the plurality of secondary stations at the station, wherein the second equation is: the total number of pulls of the secondary station = maximum value [0, ST (secondary station) - SM (times) Station) an SC (substation)]; wherein the ST (secondary station) is the target production value of one of the stations, the SM (secondary station) is the number of work in progress for one of the stations, and the SC (Secondary station) is a quantity of work in progress waiting for one of the processes at the secondary station; using the dispatching system to add the total number of pulls of each of the secondary stations to the corresponding work order record; and displaying by using the display device The total number of pulls of these secondary stations. 8. The method for determining the station demand in the work order as described in item 5 of the patent application, wherein the work order record further includes a station, and the method further comprises: using the dispatch system to calculate a first a second equation to obtain an average number of pulls of each of the plurality of secondary stations at the station, wherein the second equation is: the average number of pulls of the secondary station = maximum value [0, ST (secondary station) χ first time / second time - SM (secondary station) - SC (secondary station)]; Page 23 1322967 ___ Case No. 92105033__±_3-§_------ VI. Patent application scope where the ST (secondary station) is the target production value of one of the stations, the SM (secondary station) For the number of WIPs completed for one of the stations, and the SC (substation) is the number of WIPs waiting for one of the processes at the station; using the dispatch system to add the average number of pulls for each of the substations to Correspondingly, the work order record is recorded; and the display device is used to display the average number of pulls of the secondary stations. 9. The method for determining the station demand in the work order as described in claim 8 of the patent scope, wherein the One time is the number of hours that have passed since the day, and the second time is 24 hours. 10. A method of determining a demand for a station in a work order' includes at least: providing a plurality of work-in-progress to a station, wherein each of the work-in-progress has a work order record, and the work order record is at least Including, batch number, one stop and one station; using a dispatch system to calculate the total number of pulls of the plurality of secondary stations at the station according to the following equation: The number of pulls in the station = maximum [〇, ST ( Secondary station)~ SM (secondary station)-SC (secondary station)]; wherein the ST (secondary station) is the target production value of one of the stations, and the SM (secondary station) is completed for one of the stations The number of work in progress, and the SC (substation) is the number of work in progress at one of the waiting processes in the secondary station; using the dispatch system to add the total number of pulls of each of the secondary stations to the corresponding work order record; as well as Page 24, 1322967 ---- Case No. 92105033_Yearly revision __ Six, the scope of application for patents uses a display device to display the record of each work order for each of the in-process products for an operator to The largest one of the total number of pulls of the secondary station is selected to perform the process, wherein the one of the in-process products corresponds to the largest of the total number of pulls of the secondary stations. 11. A method of determining a demand for a station in a work order, comprising at least: providing a plurality of work-in-progress to a station, wherein each of the work-in-progress has a work order record, and the work order record includes at least Batch number, one stop and one station; use a dispatch system to calculate the average number of pulls of the multiple stations in the station according to the following equation: Average number of pulls of the station = maximum [0, ST (secondary station) ) χ first time / second time - SM (secondary station) - SC (secondary station)]; wherein the ST (secondary station) is the target production value of one of the production stations of the secondary station, the SM (secondary station) is the One of the secondary stations has completed the number of WIPs, and the SC (substation) is the number of WIPs waiting for one of the processes at the station; using the dispatch system to add the average number of pulls of each of the substations to the corresponding Recording the work order; and using a display device to display the work order record of each of the in-process products, so that an operator selects the work-in-progress according to one of the highest number of average pulls of the second stations One of them to carry out the process, some of which The person in the product corresponds to the largest of the average number of pulls of the secondary stations. 1 2 · If you need to send a station in the decision form as stated in item 11 of the patent application scope 1322967 Case No. 92105033 A_ Amendment VI. Method of applying for patent scope, the first time is the number of hours that have passed on the day, and the second time is 24 hours. 11^ Page 26