Siemens SIMATIC ET 200AL, System Manual

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OPC UA communication
9.3 Using the S7-1500 as an OPC UA server
Communication
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9.3.4.3 Creating a server interface for companion specification
For basic information on companion specifications, refer to the section "Using OPC UA
companion specifications (Page 245)". The benefits of the Euromap 77 companion
scpecification, which provides a model for injection molding machines, is also discussed in
detail there.
Using this companion standard, the S7-1500 CPU can control an injection molding machine,
for example, and provide an OPC UA client, such as a higher-level MES system, with an
interface for accessing the functions and tags of injection molding machine.
An OPC UA server interface of the type "Companion Standard" limits the access of clients to
exactly those functions and tags that are required, for example, for higher-level systems (MES
systems).
The following description shows how to create a server interface in STEP 7 (TIA Portal) which
contains only the Euromap 77 companion specification.
If you want to make OPC UA clients accessible to other tags or methods than those required
for the management of an injection molding machine, simply create another OPC UA server
interface. In this way, you can clearly arrange the functionality of the CPU as OPC UA server.
Creating a server interface for a companion specification
To create a server interface for a companion specification with STEP 7 (TIA Portal), proceed as
follows:
1.
Select the CPU that you want to use as an OPC UA server.
2. In the project tree, click "OPC UA communication > Server interfaces".
3. Double-click "Add new server interface".
4. To select this type of server interface, click "Companion specification".
A general name for the new server interface is entered in the dialog, for example
"Server_Interface_1".