Siemens SIMATIC S7-400H System Manual page 16

Table of contents
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 switched 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 - PROFINET ............................................................................219
Figure 14-3 S7 routing: TeleService application example.............................................................................220
Figure 14-4 Data set routing..........................................................................................................................225
Figure 14-5 Example of an S7 connection ....................................................................................................232
Figure 14-6 Example that shows that the number of resulting partial connections depends on the
configuration...............................................................................................................................233
Figure 14-7 Example of linking standard and fault-tolerant systems in a simple bus system.......................237
Figure 14-8 Example of linking standard and fault-tolerant systems in a redundant bus system .................238
Figure 14-9 Example of linking of standard and fault-tolerant systems in a redundant ring .........................238
Figure 14-10 Example of redundancy with fault-tolerant systems and a redundant bus system with
redundant standard connections................................................................................................240
Figure 14-11 Example of connecting a fault-tolerant system to a single-channel third-party system
using switched PROFIBUS DP ..................................................................................................241
Figure 14-12 Example of connecting a fault-tolerant system to a single-channel third-party system
using PROFINET IO with system redundancy...........................................................................242
Figure 14-13 Example of linking a fault-tolerant system to a single-channel third-party system ....................243
Figure 14-14 Example of redundancy with fault-tolerant system and redundant ring.....................................247
Figure 14-15 Example of redundancy with fault-tolerant system and redundant bus system.........................248
Figure 14-16 Example of fault-tolerant system with additional CP redundancy..............................................248
Figure 14-17
Example of redundancy with fault-tolerant system and fault-tolerant CPU ...............................250
Figure 14-18 Example of redundancy with fault-tolerant system and redundant bus system.........................252
Figure 14-19 Example of redundancy with a fault-tolerant system, redundant bus system, and CP
redundancy on PC. ....................................................................................................................252
Figure 14-20 Communication load as a variable of data throughput (basic profile)........................................254
Figure 14-21 Communication load as a variable of response time (basic profile) ..........................................255
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System Manual, 03/2012, A5E00267695-11
S7-400H