Creating Planning Calendars with Calculation Rule 

  1. Starting from the MRP menu choose Master data ® Planning calendar ® Create periods.

    2. The initial screen for planning calendar maintenance now appears.

  2. Enter the plant for which the planning calendar is to be valid.
  3. Enter a combination of numbers or letters of up to three digits in length for identifying the calendar and choose . This entry is alphanumeric.

    4. The screen used for maintaining the planning calendar now appears.

  4. Enter a short description of the planning calendar.
  5. Enter the minimum period.

    6. The minimum period is used as a time limit for maintenance of a calendar that is no longer valid. You use the minimum period to define the period necessary for reprocessing the calendar. If the time limit is exceeded, the system displays the calendar for processing (see Changing the Planning Calendar), even when the Valid to date has not been reached yet. You should therefore define the minimum period so that, in the future, the system displays the planning calendar for processing on time in the future.

    You define the validity period of the calendar after you have defined the planning rule.

  6. Specify how the system should proceed if the period start happens to fall on a day that is not defined as a workday in the factory calendar.
  1. Choose .

The system displays the Select calculation rule dialog box. The calculation rule determines the calculation of the periods for the planning calendar.
  1. Choose the calculation rule you require:

Example: period start on Monday and Wednesday every week

Example: period start on every second Wednesday of the month

Example: period start on every fifth workday of the month

You can specify the workday/workdays of the planning calendar according to the workdays defined in the factory calendar.

Example: period start on every fifth workday of the year

You can specify the workday/workdays of the planning calendar according to the workdays defined in the factory calendar.

Example: period start on every fifth workday from a particular start date

You can specify the workday/workdays of the planning calendar according to the workdays defined in the factory calendar.

Example: period start on every second Wednesday from a particular start date
  1. Choose .

In the screen area Calculation rule for period specification, the system asks you to specify the parameters of the corresponding calculation rule.
  1. Enter data as required.
  2. Choose Calculate periods.

The system displays the New dates dialog box.

The system displays a start date in the Valid from field. You can change the date here, if necessary.

In the Valid to field, the time period that results from the minimum period is displayed. Here, you enter the date up until which the system is to calculate the periods.
  1. Choose .

The system then displays the calculated periods.

The number of the displayed periods is used in the stock/requirements list for the period totals display, if the display is set according to a planning calendar.
  1. Save your entries.