Overview Of The Configuration; Access To Process Data Of The Cpu - Siemens SIMATIC S7-400 Operating Instructions Manual

Protocol / function Port number (pro-
tocol)
NTP 123 (TCP)
HTTPS 443 (TCP)
SNMP 161 (UDP)
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.
CP 443-1 OPC UA
Operating Instructions, 01/2017, C79000-G8976-C427-02
Default of the port Port status
Closed Open after configuration
Closed Open after configuration
Open Open after configuration
Configuration and operation
4.3 Overview of the configuration
Authentication
No
Yes
Yes (with SNMPv3)
39