Calculating Duration for Outside Operations
If you are not using the cross-referenced purchase order method, and are posting time on the operation, the system plans the outside operation Run Duration normally (based on posted time/quantity).
The system considers the due date of the outside operation's cross-referenced PO line item when it calculates the operation duration. Basically, the system may reduce or extend the outside operation's duration, provided the operation is the first open (that is, not posted Complete) operation in the routing.
- If all of an outside operation's cross-referenced PO lines are Complete or Filled, the system sets the Run Duration, Move, Queue, and Finish fields to 0.
- If any PO line has a status of Ordered, and the operation has been
started (that is, operation quantity received is greater than 0),
the system adjusts the Run Duration as shown in the table below.
If... Then... This Operation is the first open operation in the routing OR
The normal Run Duration value (based on posted time/qty) is greater than the Due Date/time of the latest cross-referenced PO line item - Current Time.
The system sets the Run Duration to Due Date/time of the latest cross-referenced PO line item - Current Time. The Move, Queue, and Finish hours fields are set to 0 If the adjusted duration is less than 0, the system sets the operation's Run Duration to 0.
NOTE: The time value on the Due Date comes from the Supply Time field on the Planning Parameters form.
Operations previous to this one exist, and this operation has received at least one piece. Set the Run Duration to the earlier of (1) the normal duration, based on posted time and quantity or (2) the Due Date/time of the latest cross-referenced PO line item - Current Time. Operations previous to this one exist, and this operation has not received at least one piece. Set the Run Duration to the normal duration, based on posted time and quantity.