The simplest implementation is, that the MachineryItem represents its monitoring information in its Monitoring building block, and the components provide their monitoring information in their Monitoring building blocks. When a component gets replaced, only this part of the information model needs to be replaced, as well.

An example is shown in Figure 34. The X:MyMachine provides the Monitoring building block with information only in the context of the machine, not considering anything from its subcomponents. It does provide a subcomponent X:MyComponent, also providing a Monitoring building block with information about the subcomponent.

Note: The values of the MachineryItem may be aggregated out of the values of subcomponents. Considering the example of Figure 34, the overall MachineryItemState may consider the MachineryItemState of subcomponent X:MyComponent as well. Same is true for the DeviceHealth. Depending on the functionality of the X:MyMachine, this may actually be required if the X:MyComponent is an integral part of the X:MyMachine, and the X:MyMachine would not be functional without X:MyComponent.

Figure 34 – Example of usage of Monitoring with independent representation