| # Simulate and Create Line Sequences (tiasl4200m000) Use this session to generate a sequence of assembly orders for an assembly line. Related topics Assembly control overview Line sequencing and rule types in Assembly Control Line station variants and line station orders Assembly order costing Assembly backflushing Assembly line station utilization Assembly orders Sequence Options Sequence Options LN only optimizes the sequence for the segment selected in the Pivot Segment field. Select an improvement method: Local Improvement If selected, LN only optimizes the sequence for the segment selected in the Pivot Segment field. You can select Neighbor Checking to optimize the sequence for a segment. Global Improvement If selected, LN optimizes the sequence for all segments that you select in this session. Neighbor Checking If this check box is selected, LN considers the segments immediately before and after the specified segments during the optimization process. This gives rise to a sequence that is translatable to the neighbor segments, which means that the sequence changes are feasible. Note If you use the Global Improvement option, Neighbor Checking is selected and cannot be cleared. If you use the Local Improvement option, Neighbor Checking can be selected or cleared. Confirm Sequence If this check box is selected, the sequence that LN generates is confirmed automatically. The orders in the sequence are offset and the planning data for ASC orders, such as segment start time and segment end time, are calculated. If this check box is cleared, you can confirm the sequence when you click the Confirm button, after you select the run number of a previously generated sequence. Offsetting Options Offsetting Options Select an option for calculating the offset. Allowed values Offsetting Options Related topics Offsetting Line Station Orders Manually moving Assembly Orders Initial Start Date This date is defaulted from the Planned Start Time of the first position on the last segment of the assembly line. Note If the date is in the past, it is corrected to the current date and time + five minutes, or the first available work time in the calendar. Related topics Assembly control overview Line sequencing and rule types in Assembly Control Assembly orders (Re) Plan Start Date The date you want as the new starting point for the planning of the next order on the assembly line. Note The replan start date must be in the future. If the date is in the past, it will be corrected to the current date and time + five minutes, or the first available work time in the calendar. Related topics Assembly planning overview Sequence Selection Assembly Line The assembly line that you want to sequence. Pivot Segment The first segment in the sequence generated by LN. Note The segment for which you have defined parameters in the Remix/Sequence Parameters (tiasl4110m000) session. If you sequence multiple segments, LN sequences the pivot segment first. This segment is then copied to the other segments within the range, and the segments are then sequenced. You must carefully select a segment that is representative of your assembly line. You can simulate line sequences for your assembly line with various different segments as the pivot segment, to see which gives the most efficient sequence. The sequencing based on the pivot segment is treated differently depending on the Sequence Improvement Method that is selected: If the Local Improvement option is selected, only the pivot segment will be optimized and sequenced. If the Global Improvement option is selected, the line segment range to be optimised must contain a pivot segment. The pivot segment is used to signal where the optimization process starts. Line Segment A set of consecutive assembly-line work centers on an assembly line between two buffers. The first buffer is the beginning of the segment, the next buffer is the first part of the next segment. Planned Offline Date The actual offline date of new orders which are taken into account and added to the sequence in the sequencing process. LN always takes previously sequenced orders into account, irrespective of the date range you specify in this field. . Sequence Time Fence If this check box is selected, a time fence must be defined for this sequence of the assembly line. Once filled, a date is calculated and displayed. Note If a sequence time fence is entered, no line sequencing occurs before the calculated date. Ignore Rules within Time Fence If this check box is selected, the sequence logic does not compensate for any violated line rules detected after the sequence time fence date. If this check box is cleared, and the line sequence violates the line rules within the time fence, the sequence logic compensates for this after the sequence time fence. Example The assembly line has a line sequence that has one in twelve cars painted with a special coating. A planner needs to have the first fifteen cars in the line sequence be given the special coating. If the sequence time fence is defined so that all fifteen cars are within the time fence, then these cars will not be rescheduled. If this check box is cleared, LN compensates once the time fence is passed to avoid the high penalty cost for the deviation from the rule. No cars that require the special coating are scheduled for the next 180 cars (15*12). If this check box is selected, after the time fence is passed, a new line sequence with the line rule ratio can be scheduled. Related topics Line sequencing and rule types in Assembly Control Horizons and time fences Sequence Quality Run Number The identification number of the sequencing run. To see results of other run numbers, click the Up or Down button. Penalty Cost Theoretical costs for not meeting rules on an assembly line. Convertible Indicates whether the sequence is translatable between the different segments of the assembly line. Sequence Progress Initialize Sequence The value of this field indicates whether a sequence was initialized, by adding a new assembly order, for the selection you made in this session. Initial Penalty Cost Penalty cost of the sequence before optimization has taken place. Selected Sequence The run number of the selected run. Generate Generates the sequence. Evaluate Prints a report that shows the order sequence and the order option combinations for each segment of the selected run number. Confirm Permanently stores the order sequence of the selected run number. Parameters Starts the Remix/Sequence Parameters (tiasl4110m000) session. Messages Displays error messages and warnings. Up Click to see results of a previous run. Down Click to see results of a later run. |