| Segment Schedules (tiapl4500m000) |  |
| Use this session to calculate and display segment schedules. Segment schedules are schedules that indicate when the assembly parts that are required for the work in a particular line segment must be delivered to the shop floor warehouse. For each segment on a line, a range of offline periods is defined. And for each period a date is scheduled on which the assembly parts are required. Therefore, every product variant whose requested offline date falls in one of these periods requires its assembly parts for the segment in question on that date. The advantage of these schedules is that the assembly part requirements can be determined right from the schedule, if only the requested offline date of the product variant and the segment of the assembly parts is known. Compare this to the following procedure, which you must use if no segment schedules are used: Determine in which segment a part is required. Offset that line segment: calculate the time between the start of the segment and the end of the roll-off line. Calculate the date on which the assembly part is required. Determine the plan period in which this date falls. Determine the delivery date of the part, which is the start date of the plan period. Segment schedules are used for a rough planning of assembly part requirements, especially in the more distant future, that is, the period after the allocation time fence, but before the demand time fence. However, the schedules cover the whole period in the demand time fence, including the allocation time fence. Note To prevent that no date can be scheduled for product variants whose requested offline date falls before the first period of a segment, the Planned Offline Date From field of the first period of a segment is empty. As a result, the date scheduled of that period applies for all dates before the Planned Offline Date To. The fields in the current session must be read as follows: The Planned Offline Date To and the Planned Offline Date From display the periods that are defined for the segments displayed in the Line Segment field. A product variant whose requested offline date falls in this period requires its assembly parts for the segment concerned on the Date Scheduled. These segments occur on the displayed Assembly Line. This assembly line is a feeding line to the displayed Roll-off Line if the codes of these lines differ. If the codes are equal, the Assembly Line is itself the Roll-off Line. Important! The Calculate Assembly Part Requirements (tiapl2221m000) session must use the most up-to-date schedule. Therefore, that session automatically updates the segments if a change is detected that affects the schedules. However, not all changes can be detected automatically. In some cases, the schedule must be updated manually, either through the Update command on the appropriate menu of the current session, or by selecting the Update Segment Schedules check box in the Calculate Assembly Part Requirements (tiapl2221m000) session. The schedules must be updated manually when: The line structure is changed. The plan period definition of the current scenario is changed, while the reference date is not changed. Related topics Assembly planning overview Segment schedules
Fields | Description
Roll-off Line | The code of the roll-off line where the end product comes off. The roll-offline is used to offset the line segments, which means that the time between the start of a line segment and the end of the roll-off line is calculated.
Assembly Line | The assembly line whose assembly part requirements are calculated, based on the segment schedule displayed in this session. The line segment displayed in the Line Segment field is a segment of this line. If the code of this line differs from the code that appears in the Roll-off Line field, the line is a supply line.
Line Segment | The line segment for which the assembly part requirements are calculated, based on the segment schedule displayed in this session. The segment is a segment of the assembly line that appears in the Assembly Line field.
Planned Offline Date From | The start date of the date range for the displayed line segment. A product variant whose requested offline date falls in this range requires its assembly parts for the displayed line segment on the date that appears in the Date Scheduled field. Note The first period of a segment has no start date. In that case the current field is empty. As a result, the Date Scheduled of the record applies for all assembly part requirements up to the Planned Offline Date To.
Planned Offline Date To | The end date of the date range for the displayed line segment. A product variant whose requested offline date falls in this range requires its assembly parts for the displayed line segment on the date that appears in the Date Scheduled field.
Date Scheduled | The date on which the assembly parts for the displayed line segment are required, if the requested offline date of the product variant falls between the Planned Offline Date To and the Planned Offline Date From.
Commands | Description
Update | Updates the segment schedules. Because the Calculate Assembly Part Requirements (tiapl2221m000) session must use the most up-to-date schedule, that session automatically updates the segments if a change is detected that affects the schedules. However, not all changes can be detected automatically. In some cases, the schedule must be updated manually, either through this Update command, or by selecting the Update Segment Schedules check box in the Calculate Assembly Part Requirements (tiapl2221m000) session. The schedules must be updated manually when: The line structure is changed. The plan period definition of the current scenario is changed, while the reference date is not changed.