Siemens SIMATIC S7-1200 System Manual page 1297

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Telecontrol by a control center

In telecontrol applications, SIMATIC S7-1200 stations with a CP 1242-7 communicate with a

control center via the GSM network and the Internet. The "TELECONTROL SERVER

BASIC" (TCSB) application is installed on the telecontrol server in the master station. This

results in the following use cases:

● Telecontrol communication between station and control center

In this use case, data from the field is sent by the stations to the telecontrol server in the

master station via the GSM network and Internet. The telecontrol server is used to

monitor remote stations.

● Communication between a station and a control room with OPC client

As in the first case, the stations communicate with the telecontrol server. Using its

integrated OPC server, the telecontrol server exchanges data with the OPC client of the

control room.

The OPC client and telecontrol server can be located on a single computer, for example

when TCSB is installed on a control center computer with WinCC.

● Inter-station communication via a control center

Inter-station communication is possible with S7 stations equipped with a CP 1242-7.

To allow inter-station communication, the telecontrol server forwards the messages of the

sending station to the receiving station.

S7-1200 Programmable controller

System Manual, V4.2, 09/2016, A5E02486680-AK

Communication between S7-1200 stations and a control center

Communication processor and Modbus TCP

13.10 Industrial Remote Communication (IRC)