Mapping of Machine Model Entities to Configuration Elements in PCo

The Machine Model in the SAP Digital Manufacturing Cloud is used to manage information about machines and devices on the shop floor. The digital twin of a machine in the Machine Model contains all the information about the machine that is required to call up machine data or plan a machine orchestration.

In the Machine Model, you can model the following objects:

• Shop floor systems

  A shop floor system is a server in production that provides tags or services. You can use the shop floor system to model a server as a data source and then connect it as a data source. For example, you can create an OPC UA server as a data source and define all properties of the OPC UA server.

  Mapping of Entities (Shop Floor Systems)

  Shop Floor System	PCo Configuration Elements
  OPC UA server	OPC UA source system and the corresponding agent instance
  OPC DA server	OPC DA source system and the corresponding agent instance
  OPC HDA server	OPC HDA source system and the corresponding agent instance
  IP21 server	IP21 source system and the corresponding agent instance
  AF server	Asset Framework source system and corresponding agent instance
  Proficy Historian server	Proficy Historian source system and corresponding agent instance

• Service provider

  With the help of a service provider, you can model objects, services, and tag information in the Machine Model. When you configure the service provider, you define the service provider type (internal or external) and the usage of the object in PCo.

  The corresponding configuration elements are then generated automatically in PCo. The following table shows which objects (that you configure in the Machine Model) correspond to which configuration elements in PCo.

  Mapping of Entities (Service Providers)

  Object in Machine Model	Service Provider Type	Usage Type	PCo Configuration Elements
  Service provider	External	File system data source	File system source system and corresponding agent instance
  Service provider	External	Web server	Service provider is only created in the PCo database; display in the PCo Management Console is not possible
  Service provider	Internal	OPC UA server	Service provider in the database and an agent instance for the OPC UA server
  Service provider	Internal	Web server	Service provider in database, an agent instance for Web server
  Tag	Internal	-	Tag
  Service	External	-	Service, only metadata, display in the PCo Management Console is not possible
  Service	Internal	Direct destination call	Service, method definition, method notification with reference to a destination system
  Client proxy A client proxy is generated automatically in the Machine Model based on the service providers and service parameters	-	Multi	Destination system of the type multiple call destination system
  Client proxy	-	Universal Web server	Destination system of the type Universal Web service destination system (RESTful)
  Client proxy	-	OPC UA server	Destination system of type OPC UA destination system