Siemens SIMATIC S7-400 Operating Instructions Manual page 68

Configuration and operation
4.8 Configuration of the CP in STEP 7 Professional
OPC UA server
General
● Activate OPC UA server
Enable this option to enable the function of an OPC UA server on the CP.
The following parameters are displayed:
– Server URL
– URI of the application
Load PLC tags of the CPU
Here, you specify the PLC tags (symbols) of the CPU that the server application may
access.
● All PLC tags
If you select this option, all CPU tags are available to the server application.
● Only configured PLC tags
If you enable this option, only the configured CPU tags are available to the server
application.
You configure the PLC tags under the CPU: STEP 7 project navigation > Station > PLC tags
For the PLC tags enable the options "Accessible from HMI/OPC" and "Writable from
HMI/OPC" to be able to use them for the OPC applications.
Server settings
● Port
Here, you can change the port number of the application. As default port number 4840 is
used, the standard TCP port for the OPC UA binary protocol.
Permitted port numbers are as follows:
– 2000 .. 4499
– 4501 .. 34963
– 34965 .. 49151
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URL with the following parts: <Protocol part>://<IP address>:<Port number>
If obtaining the IP address via DHCP was enabled for the interface of the CP, the IP
address displayed in the URL is replaced by <
Server URI of the CP with the following parts: <Protocol part>:<Application name of
the server>:<Globally Unique Identifier (GUID)>
dynamic
>.
Operating Instructions, 01/2017, C79000-G8976-C427-02
CP 443-1 OPC UA