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 Call Horizon

The call horizon specifies when a maintenance call object (such as a maintenance order) should be created, meaning how much time there should be between the confirmation date or start date and the next planned date of a maintenance plan before the maintenance order is created. You can define a percentage, a number of calendar days, or a number of working days for the call horizon.

  • If you specify %, the system calculates the times for the maintenance call based on this percentage of the maintenance cycle.

  • If you specify days ( DAY ), the system generates the maintenance call objects a certain number of days before the planned date. When scheduling the maintenance call, the system does not take weekends, holidays, or your company's vacation shutdowns into account.

  • If you specify factory calendar days ( FKT ), the system generates the maintenance call objects a certain number of working days before the planned date. The system bases scheduling on the assigned factory calendar and takes weekends, holidays, and your company's vacation shutdowns into account.

    Note Note

    If you have saved a factory calendar in the header data of the maintenance plan, the system uses this calendar for scheduling. If no factory calendar has been entered at header level, the system evaluates the factory calendar of the planning plants at item level. The system considers all the maintenance plan items and defines the earliest possible working day as the maintenance date.

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You can define the call horizon in maintenance strategies, strategy plans, and single cycle plans. If you specify or change a call horizon in a maintenance strategy, the value you specify is proposed in all maintenance plans that are created thereafter.

Example Example

The total maintenance cycle is 250 days. If you define a call horizon of 0%, 80% or 100%, the system creates the maintenance order after the following number of days:

End of the example.

0 %

Immediate call

80 %

Call after 200 days (= 80% of 250 days)

The start date is April 1st, 2003. The maintenance order will be created 200 days later, on November 17th, 2003.

100 %

The call is made when the planned date has been reached.

Note Note

You cannot define a call horizon for a multiple counter plan. To ensure that a maintenance order is created before the order start date is reached, you must specify a preliminary buffer in the scheduling parameters. To do this, enter how many days before the start date the maintenance order should be created.

You should always specify a call horizon for performance-based maintenance plans.

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