Table of contents
S7-400H
System Manual, 03/2012, A5E00267695-11
15
Figures
Figure 2-1
Operating objectives of redundant automation systems..............................................................25
Figure 2-2
Integrated automation solutions with SIMATIC............................................................................27
Figure 2-3
Example of redundancy in a network without error......................................................................28
Figure 2-4
Example of redundancy in a 1-out-of-2 system with error ...........................................................29
Figure 2-5
Example of redundancy in a 1-out-of-2 system with total failure.................................................29
Figure 3-1
Overview ......................................................................................................................................32
Figure 3-2
Hardware of the S7–400H basic system......................................................................................34
Figure 3-3
User documentation for fault-tolerant systems ............................................................................40
Figure 4-1
Hardware assembly .....................................................................................................................42
Figure 5-1
Arrangement of the control and display elements on CPU 41x-5H PN/DP.................................47
Figure 5-2
Jack connector.............................................................................................................................50
Figure 5-3
Mode switch positions..................................................................................................................60
Figure 5-4
Design of the memory card..........................................................................................................65
Figure 7-1
Diagnostics with CPU 41xH.........................................................................................................92
Figure 7-2
Diagnostics addresses for DP master and DP slave...................................................................93
Figure 8-1
Configuration example of system redundancy with media redundancy ....................................105
Figure 8-2
S7-400H system with IO devices connected in system redundancy.........................................106
Figure 8-3
System redundancy in different views .......................................................................................107
Figure 8-4
PN/IO with system redundancy..................................................................................................109
Figure 8-5
PN/IO with system redundancy..................................................................................................110
Figure 9-1
Properties - DP slave .................................................................................................................116
Figure 10-1
Memory areas of the S7-400H CPUs ........................................................................................117
Figure 11-1
Synchronizing the subsystems ..................................................................................................122
Figure 11-2
System and operating states of the fault-tolerant system..........................................................130
Figure 12-1
Sequence of link-up and update ................................................................................................144
Figure 12-2
Update sequence.......................................................................................................................145
Figure 12-3
Example of minimum signal duration of an input signal during the update ...............................146
Figure 12-4
Meanings of the times relevant for updates...............................................................................156
Figure 12-5
Correlation between the minimum I/O retention time and the maximum inhibit time for
priority classes > 15 ...................................................................................................................160
Figure 13-1
Single-channel switched distributed I/O configuration at the PROFIBUS DP interface ............173
Figure 13-2
Single-channel switched distributed I/O configuration at the PROFINET interface...................174
Figure 13-3
Redundant I/O in central and expansion devices ......................................................................178
Figure 13-4
Redundant I/O in the one-sided DP slave .................................................................................179
Figure 13-5
Redundant I/O in the switched DP slave ...................................................................................180
