Hands-On Industrial Internet of Things

The OPC UA information model

The information model is the conceptual representation of the objects that you manage to carry out your business. The same pieces of physical equipment and the associated pieces of information can be modeled in different ways, according to the requirements of the specific process and environment. In OPC Classic, it was only possible to manage simple data; the coding of any semantics was not possible, since the information model was flat. For example, in the case of a temperature measured by a sensor, the only information that would have been available to understand the meaning of that data was the name of the variable and a few other elements, such as the unit of measurement. The basic specifications of OPC UA ...