Siemens SIMATIC S7-1200 - 13.10.2 Connection to a GSM network

Communication processor and Modbus TCP
13.10 Industrial Remote Communication (IRC)
S7-1200 Programmable controller
System Manual, V4.2, 09/2016, A5E02486680-AK
1291
Secure communication
The well-proven SINAUT ST7 protocol or the standardized DNP3 or IEC 60870-5 protocol
adds security to Industrial Remote Communication
(http://w3app.siemens.com/mcms/infocenter/dokumentencenter/sc/ic/InfocenterLanguagePa
cks/Netzwerksicherheit/6ZB5530-1AP02-0BA4_BR_Network_Security_en_112015.pdf). The
TeleControl solution provides comprehensive measures to prevent data falsification and
loss. Each transmission module has a large memory for several thousand data frames,
which offers the ability to bridge downtimes in the transmission link. Dedicated VPN solutions
protect special IP-based networks.
The CP 1243-1 communications processor securely connects the SIMATIC S7-1200
controller to Ethernet networks. With its integrated firewall (Stateful Inspection) and VPN
protocol (IPsec) security functions, the communications processor helps protect S7-1200
stations and lower-level networks against unauthorized access and helps protect data
transmission against manipulation and espionage by encryption. Furthermore, the CP can
also be used for integrating the S7-1200 station into the TeleControl Server Basic control
center software using IP-based remote networks.
13.10.2
Connection to a GSM network
IP-based WAN communication via GPRS
Using the CP 1242-7 communications processor, the S7-1200 can be connected to GSM
networks. The CP 1242-7 allows WAN communication from remote stations with a control
center and inter-station communication.
Inter-station communication is possible only via a GSM network. For communication
between a remote station and a control room, the control center must have a PC with
Internet access.
The CP 1242-7 supports the following services for communication via the GSM network:
● GPRS (General Packet Radio Service)
The packet-oriented service for data transmission "GPRS" is handled via the GSM
network.
● SMS (Short Message Service)
The CP 1242-7 can receive and send SMS messages. The communications partner can
be a mobile phone or an S7-1200.
The CP 1242-7 is suitable for use in industry worldwide and supports the following frequency
bands:
● 850 MHz
● 900 MHz
● 1,800 MHz
● 1,900 MHz