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• OPC-40501-1 – OPC UA for Machine Tools - Part 1: Machine Monitoring and Job Management
  C.2.4 Calculation of the OEE
  product of Availability, Effectiveness and Quality Rate. These measures are calculated as follows: Availability = APT / PBT Effectiveness = PRI x PQ / APT Quality rate = GQ / PQ In addition to the indicators ... APT , PQ and GQ as previously defined, the planned variables PBT (Planned busy time) and PRI (Planned run time per item) are required. This information usually comes from