| Planned requirement dates in production synchronous schedules
(PSS)The date on which
assembly parts are due at the required line station is their planned
requirement date. The calculation of the planned requirement date depends on
the value that you entered in the Job Sequence Type field in the Replenish Shop Floor Warehouse (tiasc8210m000) session. You have two choices of how to call off materials: - Call off materials based
on the planned sequence of the supply line station. This
method relies on the planned start times of the line station orders, and
schedules the assembly line orders based on the start time of the first
assembly order for the line station. Buffer variations are taken into
consideration if you define a safety lead time.
- Call off materials based
on the actual sequence of the trigger line station. The
trigger line station is the line station on which the triggers are fired, and
is defined in the Process Trigger Definition (tiasl8100m000) session. In this situation, LN calculates the arrival times of the materials based on the number of line
stations (between the suppply line station and trigger line station) and on the
cycle time. In this way, materials are only called off for assembly orders that
have actually passed the trigger point. This method better reflects the
actuality of the assembly situation.
Note The method that uses
the actual sequence is only available for use with order-controlled SILS items. | |