Addressing In The Redundant Tcsb System; Partner For Inter-Station Communication - Siemens SIMATIC NET TeleControl S7-1200 CP 1243-1 Operating Instructions Manual

4.7.2

Addressing in the redundant TCSB system

Addressing of the redundant telecontrol server
● Addressing of the TCSB redundancy group by the stations using one IP address
In the LAN in the master station to which the TCSB server PCs and the DSL router (e.g.
SCALANCE M) are connected, the Network Load Balancing (NLB) of the computer
operating system will assign a common virtual IP address to the two server PCs.
This IP address is configured depending on the network setup:
– If only one CP without a DSL router is connected, the virtual address assigned by the
– If a DSL router is used, only one IP address will be configured to address the
4.7.3

Partner for inter-station communication

Inter-station communication
In this table, you specify the S7 stations with which the current station will use inter-station
communication. Connections for inter-station communication run via the telecontrol server.
Partner
The partner number is assigned by the system. It is required during data point configuration
to assign data points to their communications partners.
For inter-station communication, the partner is addressed with the parameters "Project",
"Station" and "Slot".
Project
Here, enter the project number of the CP in the partner station. (Parameter group "Security >
CP identification" on the partner)
Station
Here, enter the station number of the CP in the partner station. (Parameter group "Security >
CP identification" on the partner)
CP 1243-1
Operating Instructions, 12/2016, C79000-G8976-C365-02
NLB must be configured in the CP as the IP address of the telecontrol server.
redundant telecontrol server in the stations, the public address of the DSL router.
Set the port forwarding on the DSL router so that the public IP address (external
network) is led to the virtual IP address of the TCSB server PCs (internal network).
Only the public IP address is reachable from the Internet. The station does not
therefore receive any information telling it which of the two computers of the
redundancy group it is connected to.
Configuration
4.7 Partner stations
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