The question is very justified, because one does not find the OEE as property in any resource. It is the product of the availability, the performance and the quality rate of the workplace within the considered period. Unfortunately, however, there are different ideas as to how the quality rate has to be calculated.

a) The quality rate can be calculated time-based. Then it says something about the effectiveness losses of the workplace, which were caused by the fact that a part of the scheduled operating time of the workplace was wasted for the output of scrap. The time-based quality rate provides meaningful information even if different materials with different target times per unit were produced at one workplace.

b) The quality rate can be quantity-based calculated. In this case, it only provides meaningful information with regard to plant effectiveness if the same material or materials with identical target times per unit were always produced on the plant in the period under consideration. Nevertheless, the quantity-based quality rate is often used to calculate the OEE.

FORCE Bridge API does not give either variant preference. Instead, the API provides all the information required to calculate the OEE in one way or another. This information is

– The availability of the workplace in workplaces/{id}/operatingStateSummary

– The performance as well as the time-based and quantity-based quality rate of the workplace in workplaces/{id}/quantitySummary