Communication processor and Modbus TCP
13.10 Industrial Remote Communication (IRC)
S7-1200 Programmable controller
1298 System Manual, V4.2, 09/2016, A5E02486680-AK
Direct communication between stations
Figure 13-2 Direct communication between two S7-1200 stations
In this configuration, two SIMATIC S7-1200 stations communicate directly with each other
using the CP 1242-7 via the GSM network. Each CP 1242-7 has a fixed IP address. The
relevant service of the GSM network provider must allow this.
In TeleService via GPRS, an engineering station on which STEP 7 is installed communicates
via the GSM network and the Internet with the CP 1242-7 in the S7-1200.
Since a firewall is normally closed for connection requests from the outside, a switching
station between the remote station and the engineering station is required. This switching
station can be a telecontrol server or, if there is no telecontrol server in the configuration, a
TeleService gateway.
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