Table of contents
CPU 410 Process Automation/CPU 410 SMART
System Manual, 05/2017, A5E31622160-AC
9
18.15 Other options for connecting redundant I/Os ........................................................................ 354
18.16 CPU 410 cycle and reaction times ........................................................................................ 357
18.16.1 Cycle time ............................................................................................................................. 357
18.16.2 Calculating the cycle time ..................................................................................................... 359
18.16.3 Cycle load due to communication ......................................................................................... 362
18.16.4 Response time ...................................................................................................................... 364
18.16.5 Calculating cycle and response times .................................................................................. 369
18.16.6 Examples of calculating the cycle and response times ........................................................ 370
18.16.7 Interrupt response time ......................................................................................................... 373
18.16.8 Example of calculation of the interrupt response time .......................................................... 375
18.16.9 Reproducibility of delay and watchdog interrupts ................................................................. 376
18.17 Runtimes of the FCs and FBs for redundant I/Os ................................................................ 377
A Characteristic values of redundant automation systems ...................................................................... 379
A.1 Basic concepts ...................................................................................................................... 379
A.2 Comparison of MTBF for selected configurations ................................................................ 383
A.2.1 System configurations with redundant CPU 410 .................................................................. 383
A.2.2 System configurations with distributed I/Os .......................................................................... 384
A.2.3 Comparison of system configurations with standard and fault-tolerant communication ...... 388
B Function and communication modules that can be used in a redundant configuration .......................... 389
C Connection examples for redundant I/Os ............................................................................................. 391
C.1 MTA terminal modules (Marshalled Termination Assemblies) ............................................. 391
C.2 Interconnection of output modules ........................................................................................ 391
C.3 8-channel HART analog input MTA ...................................................................................... 393
C.4 8-channel HART analog output MTA .................................................................................... 394
C.5 SM 321; DI 16 x DC 24 V, 6ES7 321–1BH02–0AA0 ............................................................ 395
C.6 SM 321; DI 32 x DC 24 V, 6ES7 321–1BL00–0AA0 ............................................................. 396
C.7 SM 321; DI 16 x AC 120/230V, 6ES7 321–1FH00–0AA0 .................................................... 397
C.8 SM 321; DI 8 x AC 120/230 V, 6ES7 321–1FF01–0AA0 ...................................................... 398
C.9 SM 321; DI 16 x DC 24V, 6ES7 321–7BH00–0AB0 ............................................................. 399
C.10 SM 321; DI 16 x DC 24V, 6ES7 321–7BH01–0AB0 ............................................................. 400
C.11 SM 326; DO 10 x DC 24V/2A, 6ES7 326–2BF01–0AB0 ...................................................... 401
C.12 SM 326; DI 8 x NAMUR, 6ES7 326–1RF00–0AB0 ............................................................... 402
C.13 SM 326; DI 24 x DC 24 V, 6ES7 326–1BK00–0AB0 ............................................................ 403
C.14 SM 421; DI 32 x UC 120 V, 6ES7 421–1EL00–0AA0 ........................................................... 404
C.15 SM 421; DI 16 x DC 24 V, 6ES7 421–7BH01–0AB0 ............................................................ 405
C.16 SM 421; DI 32 x DC 24 V, 6ES7 421–1BL00–0AB0 ............................................................. 406
C.17 SM 421; DI 32 x DC 24 V, 6ES7 421–1BL01–0AB0 ............................................................. 407
C.18 SM 322; DO 8 x DC 24 V/2 A, 6ES7 322–1BF01–0AA0 ...................................................... 408
C.19 SM 322; DO 32 x DC 24 V/0,5 A, 6ES7 322–1BL00–0AA0 ................................................. 409
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