Processing the Sequence
Use
With this function you can put the line elements within a hierarchy level into a sequence. This means you can reproduce parallel branches or feeder lines in the production line.
A parallel branch occurs automatically if you assign two line segments to the same preceding line segment.
A feeder line is created if you assign two line segments to the same succeeding line segment.
You must maintain sequence relationships to ensure the number of takts is determined correctly. You specify the number of takts on the lowest level of the line hierarchies. The system uses the hierarchy and sequence relationships to automatically determine the correct number of takts for the higher-level line elements.
Prerequisites
Sequence relationships can be maintained only between line elements that are assigned to the same higher-level line element. For example, you cannot maintain a sequence for line segments until you have assigned all these line segments to the same line using hierarchy relationships.
You can check and change the valid sequence relationships in Customizing for iPPE in the IMG activity, "
Define General iPPE Relationship Types
".
Features
You can maintain the sequence of individual line elements on the
Sequence
tab page.You cannot arrange line networks and work areas in sequence.
You can display and process the network plan structure in a network graphic.
Example
In the following example you see a line structure over three levels. The line area 2 is linked with line area 1 by a sequence relationship. Both line areas are split into three stations, which are also linked by sequence relationships. A sequence relationship between station 3 and station 4 is not possible, as these two line segments do not have the same higher-level line segment. However, the relationship is formed automatically from the higher level.
