An important application of a scale is the data access of individual measurement results. In many cases, the measurement result is a weight value with a unit derived from the weight (e.g. flow rate, volume,...). A distinction can be made between the continuous display of the measured value (called “current Weight”) and a measurement (internal or external) that has been registered (called “registered Weight”). A registration could be triggered from an OPC UA-Client. The use case also includes the needed meta-data (e.g. product id, unit) for identifiing the result in further processing.

In some cases, the individual measurement result is not or only minor relevant. In some cases a statistic (mean value, standard deviation) over several measured values or over a period of time is required.