Siemens Simatic S7-400 - Web Server

Configuration and operation
4.3 Overview of the configuration
CP 443-1 OPC UA
Operating Instructions, 01/2017, C79000-G8976-C427-02
39
Protocol / function
Port number (pro-
tocol)
Default of the port
Port status
Authentication
NTP
123 (TCP)
Closed
Open after configuration
No
HTTPS
443 (TCP) Closed Open after configuration Yes
SNMP
161 (UDP)
Open
Open after configuration
Yes (with SNMPv3)
4.3
Overview of the configuration
Configuration in STEP 7
You configure the CP in STEP 7 V5 or STEP 7 Professional. You will find the required
version in the section Configuration (Page 19).
Overview of configuration of the CP
1. Create a STEP 7 project.
2. Create the required S7-400 stations and networks.
3. Insert the suitable CPUs and the remaining required modules.
4. Insert the CPs in the relevant stations.
5. Configure the CPs.
The online help or the information system of STEP 7 supports you when doing this.
You will find special features of the configuration of the OPC UA functions and further
specific properties of the CP described in the following sections.
The OPC UA client communication is handled using program blocks. See section
Programming the OPC UA client blocks (Page 79) for information on this.
4.4
Access to process data of the CPU
Process data in the memory areas of the CPU
The process data that the CP makes available to the OPC UA services is located in the
memory areas of the assigned CPU of the station in question.
The you will find the permitted memory areas of the CPU and the supported data types in the
section Data types (Page 40).
Addressing the process values using symbols
The process data to be transferred via the OPC UA services, can be addressed as symbols.
Process data for the OPC UA services must be created as symbols in the symbol table of
the CPU.