Examples: Linking PM Schedules Using the Linking by Cycle Method
When maintenances are scheduled through the Preventive Maintenance or Projection process, and there are secondary schedules defined using the linking by cycle method, the system will calculate the current occurrence field of the cycle each time a secondary schedule becomes due. The formula is the current occurrence = current occurrence + 1. The process compares the current occurrence to the cycle occurrences. If they are the same, the process will link the maintenances, reset current occurrence, and add 1 to current cycle field. If the cycle occurrences are not the same, the process will not link the maintenances.
Since maintenances can be scheduled for multiple due dates in the future using the Projection process, the process will continue to calculate the current occurrence and compare the current occurrence to the cycle occurrences for each secondary projection.
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Example 1
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Major service's due date: It doesn't matter.
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Minor Service due date: 05/22/2009
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Current date: 05/22/2009
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Current occurrence: Last occurrence + 1 = 4
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Cycle total occurrences: 4
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Current cycle: Current cycle +1
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Maintenances will be linked.
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Example 2
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Major service's due date: It doesn't matter.
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Minor Service due date: 05/22/2009
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Current date: 05/22/2009
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Current occurrence: Last occurrence + 1 = 2
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Cycle total occurrences: 4
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Current cycle remains the same.
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Maintenances will NOT be linked.
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Example 3
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Major service's due date: It doesn't matter.
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Minor Service due date: 05/31/2009
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Current date: 05/22/2009
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Current occurrence remains the same.
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Cycle total occurrences: 4
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Current cycle remains the same.
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Maintenances will NOT be linked.