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  Infinite Scheduling with Planning-Related Minimum Intervals

Use

You use this function to schedule or reschedule the operations of an order infinitely using a larger planning-related minimum interval between operations instead of the process-related minimum interval. This means that you can create a schedule that still has room for finite detailed scheduling at a later time.

Prerequisites

In order for the system to use the planning-related minimum interval for a relationship, the following prerequisites must be fulfilled:

  • You have defined a planning-related minimum interval for a cross-operation relationship in the source of supplyfor in-house production

  • You use an infinite scheduling mode or an infinite scheduling submode

  • You have specified in the strategy profile that the system should consider time relationships between the operations of an order

  • You have set the infinite scheduling with planning-related minimum intervals indicator in the strategy profile

Features

In the following cases, the system always uses the process-related minimum intervals:

  • If a planning-related minimum interval is not defined for a relationship in the source of supply

    If there is also no process-related minimum interval defined for the relationship, the minimum interval is 0.

  • For finite scheduling

  • Between the activities of an operation

The system always uses the planning-related minimum interval as the minimum interval when adjusting deallocated operations.

Caution Caution

In interactive planning in the DS planning board, you should not switch between the options of scheduling with the planning-related minimum interval or the process-related minimum interval. This applies in particular if you are scheduling with the reschedule scheduling function, or with finite insert scheduling modes, and the relationships should be taken into consideration.

You generally choose several objects for scheduling here, or many dependent objects, which the system must reschedule or adjust, are affected by a change to the schedule. If you switch between the options, the system must alternately reschedule or adjust according to the process-related minimum interval and the planning-related minimum interval. This can lead to performance problems or may destroy an existing “good” schedule.

End of the caution.