Siemens Simatic S7-400

Configuration and operation
4.9 Properties of the OPC UA server
CP 443-1 OPC UA
76 Operating Instructions, 01/2017, C79000-G8976-C427-02
4.9
Properties of the OPC UA server
Identification characteristics of the server.
Below you will find the most important identification characteristics of the OPC UA server of
the CP.
● Namespace index
The CP as UA server makes the namespace index 3 available.
● Namespace
Example of the name space of the CPU symbols in the S7-400 with CP 443-1 OPC UA:
http://www.siemens.com/simatic-classic-s7-opcua
● Application name
The name of the server application preset by STEP 7 is:
Siemens:SIMATIC-S7-CP443-1:OPC-UA
The name must must e adapted for every CP in the STEP 7 project individually (unique).
● Server URL
The URL consists of the following parts:
<Protocol part>://<IP address>:<Port number>
● URI of the application
The server URL of the CP consists of the following parts:
<Protocol part>:<Application name>:<Globally Unique Identifier (GUID)>
Example:
urn:Siemens:SIMATIC-S7-CP443-1:OPC-UA:<GUID>
● Port number of the application
Default port number: 4840
For configuring the parameters refer to the section "OPC UA" tab (Page 53).
NodeID - Identifier
The identifier of the NodeIDs is formed by the server application from the name of the CPU
and the symbol name:
<
CPU name >.< Symbol name >
Subscriptions
For the number of subscriptions supported by the CP as OPC UA server, see section
Configuration limits - communication (Page 16).
The data management of the subscriptions is stored in the RAM of the CP. This means that
failures of the data network do not have any further consequences.