Siemens Simantic ET200SP System Manual page 22

System overview
2.3 How are SIMATIC Safety F-systems structured with ET 200SP?
Example of a configuration with fail-safe I/O modules
①
②
③
④
⑤
⑥
⑦
⑧
⑨
Figure 2-4
22
Interface module
Light-colored BaseUnitBU..D with infeed of supply voltage
Dark-colored BaseUnitsBU..B for conducting the potential group further
I/O module
Server module (ships with the interface module)
Fail-safe I/O modules
BusAdapter
Mounting rail
Reference identification label
Example of a configuration of the ET 200SP with fail-safe I/O modules
Distributed I/O system
System Manual, 12/2016, A5E03576849-AG