Table of contents
CPU 410 Process Automation/CPU 410 SMART
12
System Manual, 05/2017, A5E31622160-AC
Table 18- 17 Direct access of the CPUs to I/O modules in the expansion unit with remote link, setting
100 m ......................................................................................................................................... 369
Table 18- 18 Example of calculating the response time ................................................................................. 370
Table 18- 19 Hardware and interrupt response times; maximum interrupt response time without com-
munication .................................................................................................................................. 373
Table 18- 20 Reproducibility of time-delay and cyclic interrupts of the CPUs ................................................ 376
Table 18- 21 Runtimes of the blocks for redundant I/Os ................................................................................. 377
Table C- 1
Interconnecting digital output modules with/without diodes ....................................................... 391
Figures
Figure 2-1
Purpose of redundant automation systems ................................................................................. 23
Figure 2-2
Overview ...................................................................................................................................... 26
Figure 2-3
Hardware of the S7-400H basic system ...................................................................................... 27
Figure 2-4
Hardware of the S7-400H basic system ...................................................................................... 28
Figure 3-1
Arrangement of the operator controls and indicators on the CPU 410 ........................................ 35
Figure 6-1
Processing chain: acquire, process, output ................................................................................. 58
Figure 6-2
Safety-related communication ..................................................................................................... 59
Figure 6-3
Operating objectives of redundant automation systems .............................................................. 61
Figure 6-4
Example of redundancy in a network without error ...................................................................... 63
Figure 6-5
Example of redundancy in a 1-out-of-2 system with error ........................................................... 64
Figure 6-6
Example of redundancy in a 1-out-of-2 system with total failure ................................................. 65
Figure 6-7
Single-channel switched distributed I/O configuration at the PROFIBUS DP interface............... 67
Figure 6-8
Single-channel switched distributed I/O configuration at the PROFINET IO interface ................ 70
Figure 6-9
System redundancy ..................................................................................................................... 74
Figure 6-10
IO devices in multiple cabinets..................................................................................................... 76
Figure 6-11
S7-400 H-system with sensors and actuators on module pairs (redundant signal pro-
cessing) ........................................................................................................................................ 78
Figure 6-12
AS 410 with redundant module pairs ........................................................................................... 79
Figure 6-13
Redundant I/O in the switched DP slave ..................................................................................... 80
Figure 6-14
Fault-tolerant digital input module in 1-out-of-2 configuration with one encoder ......................... 89
Figure 6-15
Fault-tolerant digital input modules in 1-out-of-2 configuration with two encoders ...................... 90
Figure 6-16
Fault-tolerant digital output modules in 1-out-of-2 configuration.................................................. 90
Figure 6-17
Fault-tolerant analog input modules in 1-out-of-2 configuration with one encoder ...................... 92
Figure 6-18
Fault-tolerant analog input modules in 1-out-of-2 configuration with two encoders .................... 94
