| # Line station variants and line station orders Using the similarity of order data per line station line station variants reduce the data storage and improve performance in the execution system. When the order content on a specific line station is the same for multiple orders, that content is only stored once. This similar information is stored in a line station variant. The assembly orders only have a link to Line Station Variants. Example You are making cars with many different features, including two types of wheels (broad and narrow). For the line station where the wheels are fitted, all cars with broad wheels are one line station variant, all cars with narrow wheels are another LSV, no matter what other specifications they have, because the other specifications are not relevant to the wheel line station. An LSV can be shared by a number of assembly orders. That means that operations and material usage on that line station is the same of all of those assembly orders. Purpose An LSV is a device to reduce unnecessary data, and so enhance performance. If you have one thousand orders for products, and the operations and materials at the first line station of the line are all identical, there is no point in storing identical information one thousand times. LN determines that the orders are all identical, and makes one LSV. When a new assembly order is generated, LN check the materials and operations for the order. If these are the different from exisiting LSVs, a new LSV is created. Sessions You can display LSVs in the Line Station Variants (tiasc2520m000) session and print them in the Print Line Station Variants (tiasc2420m000) session. You can display and update the materials linked to LSVs in the Line Station Variant - Assembly Parts (tiasc2121m000) session, and display and update the operations in the Line Station Variant - Operations (tiasc2122m000) session (if the LSVs are order specific). Order-specific LSVs LSVs are automatically generated by LN. If you want to alter the operations or components of an LSV, you must make the LSV order specific, by carrying out the following procedure: In the Assembly Order - Line Station Orders (tiasc2510m000) session, select the LSV. The line station order must be Frozen. On the appropriate menu, click Make Order Specific. LN makes a unique line station variant, which you can see in the Assembly Order - Line Station Orders (tiasc2510m000) session. On the appropriate menu, click Line Station Variants. The Line Station Variants (tiasc2520m000) session starts. Select the LSV. On the appropriate menu, click Operations. The Line Station Variant - Operations (tiasc2122m000) session starts. Modify the operations as required. You can modify the assembly parts linked to the operations from the appropriate menu of the Line Station Variant - Operations (tiasc2122m000) session. Line station order When assembly orders are generated, line station orders are also created. A line station order is a production order for an assembly line station. A line station order can have the following status: Planned Frozen Ready to Start Completed Closed When line station orders are generated, the status is set to Planned. Clustered line station order Represents all the material requirements for a line station for a day. A CLSO consists of user-defined buckets. The material requirements are combined for each bucket. In Assembly Control, transactions can be carried out per line station and per period, instead of per order. LN can combine the same materials for a specific period into one material line. After doing so, the cumulated quantity is stored in the CLSO. This accumulation reduces the number of transactions that are necessary, because the transactions are performed for a specific bucket. CLSOs are used in assembly part allocation and in backflushing to combine materials for a line-station order (for a day). Parameters The Transaction Processing parameter determines the use of CLSOs. This parameter is defined in the Assembly Control Parameters (tiasc0100m000) session, and can have the following values: Line Station Based Only one CLSO is created for each line station each day. Order Based One CLSO is created for each assembly order. CLSOs are used in assembly part allocation and in backflushing to combine materials for a line station order. A CLSO covers an entire day, in line-station based transaction processing, or an assembly order, in order-based transaction processing. The data for each time bucket is kept seperate. In line-station based transaction processing, each time bucket results in a separated warehousing order line for the assembly part allocation. In order-based transaction processing, an individual warehouse order is generated for each CLSO. Through the appropriate menu you can perform the following actions: Change the status of a CLSO from Closed to Open. Start the Clustered Line Station Order - Assembly Part Requirements (tiasc7140m000) session to view the assembly part requirements for each CLSO. Related topics Assembly control overview Assembly order costing Assembly backflushing Assembly line station utilization Assembly orders Line sequencing and rule types in Assembly Control |