SH-P Lead Time Scheduling

Purpose of Program

This program is used to reschedule work orders either forward (calculate Finish Date based on Start Date) or backwards (calculate Start Date based on Finish Date or Due Date) by using the Routing time standards, Work Center Queue Times, Outside Processing Lead times and the Shop Calendar.  While WO-A  Enter Work Orders and SO-N  Convert Sales Orders to Work Orders can use the same Lead Time scheduling logic to originally establish work order dates, this program can be used to reschedule existing work orders when conditions change such as queue times or work center shift hours.

General Program Operation

You can limit the work orders to be scheduled by clearing Status Codes and Priority Codes in the first two fields.

You can further limit the work orders to be scheduled by entering from/thru ranges of work order numbers, Start Dates, Finish Dates, and work order Class Codes.

You will next be prompted whether to use Forward or Backward scheduling with the default as set in SD-B  Work Orders Defaults.  If Backward is chosen, indicate whether to reschedule based on current Finish Date or Due Date.  All remaining sequences for the work orders within the selected ranges will be scheduled.  If backward scheduling is selected and there are not enough available days before the desired completion date, the program will schedule forward from today and determine the earliest possible Finish Date and give a message indicating that not all finish dates could be met.

Dependent Scheduling

If you are using Backwards Lead Time scheduling, you can have lower level subassemblies scheduled based on higher assembly need dates provided the subassembly work orders have been generated using "Create Multi-Assembly Work Orders" in SO-N  Convert Sales Orders to Work Orders or by running WO-K-D  Create Multi-Assy Work Orders.  This option will set the finish date of the subassembly work order to match the start date of the higher level work order.