Siemens SIMATIC S7-1200 - Page 159

Easy to communicate between devices
7.9 GPRS
Easy Book
Manual, 03/2014, A5E02486774-AF
159
Direct communication between stations
Figure 7-3 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.
TeleService via GPRS
Figure 7-4 TeleService via GPRS