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Process Structure Routing in iPPE ( RELNAPO_30A_SP1_MD_PPE_2 )

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Short text

Process Structure Routing in iPPE

Use

You use the process structure to generate the routing for a product in integrated Product and Process Engineering (iPPE). The nodes and variants of the product structure are linked with the process structure in order to build the data that is necessary for the assembly/production.

The iPPE process structure is set up using the objects from integrated Product and Process Engineering. In Customizing for iPPE, you determine the objects that can be used for creating the process structure. They then generate simple and multi-level structured routings.

Objects in the Routing

There are four iPPE node types for setting up the process structure:

• Routing header

• Grouping activity

• Operation

• Activity

In addition, there is the mode (alternative resource assignment) in the activity. This determines where and how the components of a product are assembled. The mode in the activity also determines which resources are used for the activity.

Setup of Process Structure

You assign the components from the product structure to the routing by assigning the corresponding component nodes or their variants to an activity.

You can create simple process models by assigning activities to a routing that maps the process of accessing a process model. You create multi-level process models by inserting grouping activities under a routing and then bundling several activities together under these activities using operations. The system always executes activities that are bundled in an operation, even if no component node or component variant has been assigned to an activity.

By bundling several operations together in a grouping activity, you can repeat the use of the operations and thereby reduce the amount of effort necessary for maintenance.

Changes to the variants in the product structure that are made with reference to a change number do not affect the assignment of the component node to an activity; that means that the assignments remain unchanged.

If an activity is assigned to a component node, the system uses the assigned activity for all component variants of the node. It is also possible to assign an activity, which is different to the one at the node, to an individual component variant. You can thereby maintain longer processing times for variants, for which the assembly requires a greater amount of work.

You link activities using relationships that determine in what sequence the activities must be executed.

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