Siemens SIMATIC NET S7-300 Manual page 33

Stations
The SEND/RECEIVE interface allows program-controlled communication on
Industrial Ethernet between the SIMATIC S7 PLC and the following:
S SIMATIC S7 PLC with Ethernet CP
S SIMATIC S5 PLC with Ethernet CP
S PC/PG with Ethernet CP
S Other station with Industrial Ethernet attachment
S7 - 400
Ethernet
SIMATIC S5
with Ethernet CP
Figure 1-5 SIMATIC S7 PLC with Possible Communication Nodes on the SEND/RECEIVE Interface
S7-CPs for Industrial Ethernet Configuring and Commissioning
Release 01/2007
C79000-G8976-C182-07
1 Communication via Ethernet CPs in S7 Stations
Ethernet CP
Other station with
Ethernet attachment
WAN
Internet
Router
only TCP/IP
Ethernet CP
S7 - 300
PG/PC with Ethernet
attachment
A -33