sequence definition

Production Planning for Process Industries (PP-PI)

Process instruction that you use at the start of a phase to specify that this phase can only be processed in the PI sheet after you have finished processing another phase.

By generating sequence definitions automatically, you can copy the phase relationships maintained in the process order to the PI sheet.

In the PI sheet, the process instructions of the phase containing the sequence definition remain inactive until all message data has been reported for the predecessor phases.

The system only recognizes phases that belong to the same PI sheet.