Siemens SIMATIC S7-400H System Manual page 11

Fault-tolerant systems
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Figure 9-4
Meanings of the times relevant for updates...............................................................................107
Figure 9-5
Correlation between the minimum I/O hold time and the maximum disable time for priority
classes > 15 ...............................................................................................................................110
Figure 10-1
Single-channel, switched ET 200M distributed I/O ....................................................................124
Figure 10-2
Redundant I/O in central and expansion units...........................................................................127
Figure 10-3
Redundant I/O in the one-sided DP slave .................................................................................128
Figure 10-4
Redundant I/O in the switched DP slave ...................................................................................129
Figure 10-5
Redundant I/O in single mode ...................................................................................................130
Figure 10-6
Fault-tolerant digital input module in 1-out-of-2 configuration with one encoder.......................139
Figure 10-7
Fault-tolerant digital input modules in 1-out-of-2 configuration with two encoders....................140
Figure 10-8
Fault-tolerant digital output modules in 1-out-of-2 configuration ...............................................140
Figure 10-9
Fault-tolerant analog input modules in 1-out-of-2 configuration with one encoder....................142
Figure 10-10
Fault-tolerant analog input modules in 1-out-of-2 structure with two encoders.........................146
Figure 10-11
Fault-tolerant analog output modules in 1-out-of-2 configuration ..............................................147
Figure 10-12
Redundant one-sided and switched I/O.....................................................................................151
Figure 10-13
Flow chart for OB 1 ....................................................................................................................153
Figure 11-1
Example of an S7 connection ....................................................................................................159
Figure 11-2
Example of how number of resulting subconnections depends on the configuration................160
Figure 11-3
Example of redundancy with fault-tolerant system and redundant ring.....................................164
Figure 11-4
Example of redundancy with fault-tolerant system and redundant bus system ........................164
Figure 11-5
Example of fault-tolerant system with additional CP redundancy..............................................165
Figure 11-6
Example of redundancy with fault-tolerant system and fault-tolerant CPU ...............................166
Figure 11-7
Example of redundancy with fault-tolerant system and redundant bus system ........................167
Figure 11-8
Example of redundancy with a fault-tolerant system, redundant bus system, and CP
redundancy on PC .....................................................................................................................168
Figure 11-9
Example of linking of standard and fault-tolerant systems to a redundant ring.........................170
Figure 11-10
Example of linking standard and fault-tolerant systems to a redundant bus system.................170
Figure 11-11
Example of redundancy with fault-tolerant systems and a redundant bus system with
redundant standard connections................................................................................................172
Figure 11-12
Example of linking of a fault-tolerant system and a single-channel third-party system .............173
Figure 11-13
Example of linking of a fault-tolerant system to a single-channel external system ...................174
Figure 11-14
Communication load as a variable of data throughput (basic profile)........................................175
Figure 11-15
Communication load as a function of the response time (basic profile) ....................................176
Figure 15-1
Synchronization module.............................................................................................................250
Figure 15-2
Fiber-optic cables, installation using distribution boxes.............................................................257
Figure 16-1
Elements and composition of the cycle time..............................................................................260
Figure 16-2
Different cycle times...................................................................................................................266
S7-400H
System Manual, 09/2007, A5E00267695-03
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