| Simulate and Create Line Sequences (tiasl4200m000) 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. 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. (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. Sequence Selection 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.
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. Up 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. | |