Siemens SIMATIC PCS 7 Function Manual page 111

Result
The following figure shows an example configuration in HW Config:
Additional information
● Function manual
● Manual
Fault-tolerant Process Control Systems (V8.0)
Function Manual, 03/2012, A5E02779471-02
Process Control System PCS 7; High-Precision Time Stamping
DP/PA Link and Y Link Bus Couplings
Advantages of fault-tolerant components
4.4 Distributed I/O
111