Siemens CP 1243-1 Operating Instructions Manual page 19

Telecontrol with a redundant master station (TCSB)
The following figure shows a possible configuration with S7 stations communicating with a
redundant master station (TCSB).
Figure 1-3
CP 1243-1
Operating Instructions, 04/2017, C79000-G8976-C365-03
S7 station communication with a redundant a master station
Application and properties
1.6 Configuration examples
19