Siemens SIMATIC S7 F Manual page 19

Product Overview
Central engineering system (ES)
PC
S7 F Sys
Standard SMs
Standard SMs
Fail-Safe Systems
A5E00085588-03
Industrial Ethernet or PROFIBUS
S7-400H
F-SMs F-SMs
Standard SMs
ET 200M ET 200M
ET 200S
Burner,
coal mill
Operator Stations (OS)
PC
PC
...
Standard Ethernet
S7 FH Sys S7-400 Standard
F-SMs
ET 200M ET 200M
Boiler prot.
Emerg. stop
PC
1-3