Siemens CP 1242-7 GPRS V2 Operating Instructions Manual page 16

Configuration examples
1.5 Requirements for operation
Telecontrol by a control center
Figure 2-2
In telecontrol applications, SIMATIC S7-1200 stations with a CP 1242-7 GPRS V2
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
Communication between a station and a control room with OPC client
Inter-station communication via a control center
16
Communication between S7-1200 stations and a 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.
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 is possible with S7 stations equipped with a CP 1242-7
GPRS V2.
To allow inter-station communication, the telecontrol server forwards the messages of the
sending station to the receiving station.
Operating Instructions, 05/2014, C79000-G8976-C311-00
CP 1242-7 V2