Usually, APS systems take over the production orders generated by the ERP system and plan and optimize the sequence in which they are to be processed. The production orders are assigned to the existing workstations via the APS software, taking into account the available resources and production capacities.
APS systems are often used for the production of many different products in one company, for capital-intensive production processes with limited capacities, for the production of goods from numerous individual parts or also for production processes in which the production processes have to be spontaneously changed again and again.
APS and PPS are often used synonymously, but APS is typically based on a fixed throughput time, independent of the other production conditions.