The following use case describes the discovery of installed PROFINET assets.
Table 9 – Use case - Asset Discovery
Goal |
The end user wants to discover all installed assets within a cell. All available information shall be discovered. |
Implements |
AM1, AM8, AM12 |
Preconditions |
All PROFINET components are configured and connected to the network. Station Names and IP-Addresses of the devices can be set. The Tag-Function and Tag-Location in I&M1 and asset management data are available. The PLC/Edge Gateway is scanning the underlying network continuously with DCP-Identify and PROFINET read services to get all relevant asset information. For details see [1]. |
OPC UA Mapping |
AM tool connects the OPC UA Server in the EGW/PLC/Device. The OPC UA information model in the EGW is built based on the found devices, modules and submodules of the last scan cycle. The required I&M and Asset information are read with the corresponding PROFINET services in the context of an implicit or device access AR. The OPC UA information model in a PLC is built corresponding to the real configuration downloaded from the engineering system of the PLC. The required I&M and Asset information are read with the corresponding PROFINET services in the context of the already established IO-AR. The OPC UA information model in a device is build corresponding to the real configuration plugged by the local device application. The required I&M and Asset information are implemented according the local device application. |
Remarks |
When there is no station name, the MAC address shall be used as BrowseName. If those devices get a correct name, they are visible as a different entity under their station name as the OPC UA browse name shall be unique. |