Workload control, a detailed exampleSix plan items are produced in the same work center. If the workload exceeds the capacity constraints, it is divided over the plan periods by means of a backward planning pass. The parameter setting in the Work Load Control Performance Indicators (cpwlc2520m000) session determines which item's production volume is the first to be allocated to a particular plan period and which production volume must be moved to an earlier period. This topic contains examples of the following parameter settings:
Example 1 : Plan item priority The production of the plan item with the highest priority is allocated first. If a plan period's production capacity is exceeded, other plan items' production volumes are moved. Settings The following parameter settings are used:
Note The backward planning rule Volume Moved is overruled by the setting of the Consider Item Priority parameter. Relevant item data:
The plan items are always planned in the following order: C - (B, E, or F) - D - A. You can specify a plan item's priority in the Items - Planning (cprpd1100m000) session, in the Priority field. Ideal plan In the first planning step, the capacity constraints are ignored. This results in the following plan:
The available capacity allows for a total production volume of 100 in each plan period. To adjust the plan in period 4 The capacity in period 4 is exceeded by 60. In period 4, only the plan items D, E, and F have a production volume. These plan items are planned in the order: (E or F) - D. This means:
This results in the following plan:
To adjust the plan in period 3 The capacity in period 3 is exceeded by 50. The plan items B, C, and D have a production volume in period 3. These plan items are planned in the order: C-B-D. This means:
This results in the following plan:
To adjust the plan in period 2 The capacity in period 2 is exceeded by 20. The plan items B and D have a production volume in period 2. These plan items are planned in the order: B-D. Part of the production volume of item D is moved to period 1. This results in the following plan:
Example 2 : Volume moved x cost The plan item of which the highest value of production volume has been shifted in the previous planning step is allocated first. If a plan period's production capacity is exceeded, other plan items' production volumes are moved. Value of production volume is defined as (unit cost x moved production volume). Settings The following parameter settings are used:
Ideal plan In the first planning step, the capacity constraints are ignored. This results in the following plan:
The available capacity allows for a total production volume of 100 in each plan period. To adjust the plan in period 4 The capacity in period 4 is exceeded by 60. Relevant item data for plan period 4:
At the start of the backward planning step, the Volume Moved equals zero for all plan items. In that case LN uses the production volume to determine which items will be planned first. The plan items are planned in the order: D-F-E. This means:
This results in the following plan:
To adjust the plan in period 3 The capacity in period 3 is exceeded by 50. Relevant item data for period 3:
The plan items that have already been moved are planned in the order of (volume moved x costs): E-D-F. The other plan items are planned in the order of production volume: C-B-A. This results in the following plan:
To adjust the plan in period 2 The capacity in period 2 is exceeded by 20. Relevant item data for period 2:
The plan items that have already been moved are planned in the order of (volume moved x costs) : C-B. Part of the production volume of item B is moved to period 1. This results in the following plan:
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