Siemens SINAUT ST7 - 5 Network Configurations

Network structures and topologies
2.2 Configurations
Station control system
94 System Manual, 07/2009, C79000-G8976-C178-07
IP-based communication via GPRS with higher security
VPN tunnel
VPN tunnel
DSL router
Dynamic
IP address
Dynamic
IP address
Station
Security
Module
SCALANCE S
Control center
Station
Dedicated line
to Internet, e.g.
DSL connection
with flat rate and
preferably
fixed IP address
GPRS network
TIM
4R-IE
Industrial
Ethernet
S7-300 with
TIM 3V-IE
MD741-1MD741-1
S7-300 with
TIM 3V-IE
SINAUT
ST7cc/sc
Firewall
Firewall
Internet
Firewall
Figure 2-6 GPRS with higher security via MD741-1 modem