OPC UA for Devices and FDT use different approaches in regard to representation of device type specific data. Some of the data defined in OPC UA for representation of the device type is available only in instance-specific data of the DTMs (see Figure 12).
The data from FDT may be mapped either to Attributes (table header “Attribute”) or to properties and other child Nodes (table header “BrowseName”) of the corresponding OPC UA Node.
Figure 12 – Example for sources of DeviceType information
For this reason the device type specific data of OPC is mapped to data on several interfaces of the DTM (see Table 58).