Dear Semicon experts,
Wafer fabrication routing is very complex with over 500 operatrion to make wafers from raw material. Do you really define all operation in routing if you are using SAP PP ?
I would assume , routing will be at aggregate level & will be used for costing only. Generally , it is impossible to use it for Scheduling because there are many alternate machine , re-entrant flow( raw material enters same machine for different operation). Shopfloor use some kind of MES software to plan loading of machines
SAP -PP also has problem in capacity intensive manufacturing as to whether to group similar machine as one workcenter or keep each machine as workcenter & model many routing. Problem intensify with above compleity.
Any workable PP solution implemented for wafer fab?
thanks in advance
Jatin