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.