Table of contents   
 
  S7-400H 
16  System Manual, 03/2012, A5E00267695-11 
Figure 13-6  Redundant I/O in stand-alone mode ..........................................................................................181 
Figure 13-7  Fault-tolerant digital input module in 1-out-of-2 configuration with one encoder.......................195 
Figure 13-8
  Fault-tolerant
 digital input modules in 1-out-of-2 configuration with two encoders....................196 
Figure 13-9
  Fault-tolerant
 digital output modules in 1-out-of-2 configuration................................................197 
Figure 13-10
  Fault-tolerant
 analog input modules in 1-out-of-2 configuration with one encoder....................199 
Figure 13-11
  Fault-tolerant
 analog input modules in 1-out-of-2 configuration with two encoders ..................202 
Figure 13-12
  Fault-tolerant
 analog output modules in 1-out-of-2 configuration ..............................................203 
Figure 13-13 
Redundant one-sided and swit
ched I/O.....................................................................................207 
Figure 13-14 
Flow chart for OB 1 ..............................................................................................
......................209 
Figure 14-1 
S7 routing...................................................................................................................................218 
Figure 14-2 
S7 routing gateways: MPI - DP - PROFI
NET ............................................................................219 
Figure 14-3 
S7 routing: TeleServic
e application example.............................................................................220 
Figure 14-4 
Data set routing..........................................................................................................................225 
Figure 14-5 
Example of an S7 connec
tion ....................................................................................................232 
Figure 14-6
  Example that sho
ws that the number of resulting partial connections depends on the 
configuration...............................................................................................................................233 
Figure 14-7
  Example of linkin
g standard and fault-tolerant systems in a simple bus system.......................237 
Figure 14-8
  Example of linkin
g standard and fault-tolerant systems in a redundant bus system.................238 
Figure 14-9
  Example of linkin
g of standard and fault-tolerant systems in a redundant ring .........................238 
Figure 14-10
  Exampl
e of redundancy with fault-tolerant systems and a redundant bus system with 
redundant standard connections................................................................................................240 
Figure 14-11
  Exampl
e of connecting a fault-tolerant system to a single-channel third-party system 
using switched PROFIBUS DP ..................................................................................................241 
Figure 14-12
  Exampl
e of connecting a fault-tolerant system to a single-channel third-party system 
using PROFINET IO with system redundancy...........................................................................242 
Figure 14-13
  Exampl
e of linking a fault-tolerant system to a single-channel third-party system ....................243 
Figure 14-14
  Exampl
e of redundancy with fault-tolerant system and redundant ring.....................................247 
Figure 14-15
  Exampl
e of redundancy with fault-tolerant system and redundant bus system.........................248 
Figure 14-16
  Exampl
e of fault-tolerant system with additional CP redundancy..............................................248 
Figure 14-17
  Exampl
e of redundancy with fault-tolerant system and fault-tolerant CPU ...............................250 
Figure 14-18
  Exampl
e of redundancy with fault-tolerant system and redundant bus system.........................252 
Figure 14-19
  Exampl
e of redundancy with a fault-tolerant system, redundant bus system, and CP 
redundancy on PC. ....................................................................................................................252 
Figure 14-20
  Comm
unication load as a variable of data throughput (basic profile)........................................254 
Figure 14-21
  Comm
unication load as a variable of response time (basic profile) ..........................................255