Processing the Line Hierarchy (SAP Library

Processing the Line Hierarchy

Purpose

You use this process to reproduce the structure of your production line in the system.

You can divide the production line into line segments and assign these line segments a number of takts and a number of individual capacities.
You can enter production rates or takt times and thus control takt-based scheduling.

The line hierarchy provides master data for the repetitive manufacturing planning tools, the Planning table and Sequencing.

Prerequisites

You must have created a production version in the material master for each material that you want to produce on the production line. Enter the production line and the rate routing in the production version. The production line is the work center, which you want to use as the header of the line hierarchy. When you access the line hierarchy, the system refers to the production version to determine the materials assigned.

Process Flow

Create Work Centers

You must create a work center for every line segment (structure node) that you want to represent in the line hierarchy. However, you can assign several takts to one line segment in the line hierarchy. The system distributes the work center capacity evenly over the takts.

Create Line Hierarchy

You create a line hierarchy, specifying whether or not you want to carry out line balancing. You then enter the time unit and the unit of measure for the production line. If you know the maximum production rate for the production line, enter it now. However, you can also enter the maximum production rate later, such as when you have carried out line balancing.

Processing the Line Hierarchy Using the Graphic

You reproduce the structure of your production line in the line hierarchy graphic. The structure defines the master data for the Planning table and Sequencing. You can select various views and then define planning segments, visualization segments and capacity segments. You can also define processing profiles for sequence planning in Sequencing.

Defining Planned Production Rates

If you created a line hierarchy without line balancing, enter the planned rates for those periods whose production rate differs from the maximum rate.

Defining Material-Dependent Production Rates

If you have created a line hierarchy without line balancing and you want to produce your materials with different rates, you can also enter material-dependent rates.

Result

You have reproduced the complete structure of your production line in the system.

You can display the line hierarchy as an object tree. The object tree represents the defined line structure including the number of takts and individual capacities as the structure tree.

If you have created a rate routing, you can enter the line hierarchy in the rate routing header.
If you have entered dummy work centers in the rate routing, you can now enter the line segments in the rate routing.
If you have planned a line balance for the line hierarchy, you can now carry this out.