Siemens SIMATIC S7-400H System Manual page 10
Fault-tolerant systems
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Also See for SIMATIC S7-400H:
- System manual (376 pages) ,
- Manual (337 pages) ,
- Manual (5 pages)
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17.6
Removing components in STEP 7 ............................................................................................ 313
17.6.1
STEP 7, step 1: Editing the hardware configuration offline ...................................................... 314
17.6.2
STEP 7, step 2: Editing and downloading the user program .................................................... 315
17.6.3
STEP 7, step 3: Stopping the reserve CPU .............................................................................. 315
17.6.4
STEP 7, step 4: Downloading a new hardware configuration to the reserve CPU................... 316
17.6.5
STEP 7, step 5: Switching to CPU with modified configuration ................................................ 317
17.6.6
STEP 7, step 6: Transition to redundant system mode ............................................................ 318
17.6.7
STEP 7, step 7: Modification of hardware................................................................................. 319
17.6.8
STEP 7, step 8: Editing and downloading organization blocks................................................. 320
17.6.9
Removing interface modules in STEP 7 ................................................................................... 321
17.7
Editing CPU parameters ........................................................................................................... 323
17.7.1
Editing CPU parameters ........................................................................................................... 323
17.7.2
Step 1: Editing CPU parameters offline .................................................................................... 325
17.7.3
Step 2: Stopping the reserve CPU............................................................................................ 325
17.7.4
Step 3: Downloading a new hardware configuration to the reserve CPU................................. 326
17.7.5
Step 4: Switching to CPU with modified configuration.............................................................. 326
17.7.6
Step 5: Transition to redundant system mode .......................................................................... 328
17.8
Changing the CPU memory configuration ................................................................................ 329
17.8.1
Changing the CPU memory configuration ................................................................................ 329
17.8.2
Expanding load memory ........................................................................................................... 329
17.8.3
Changing the type of load memory ........................................................................................... 331
17.9
Re-parameterization of a module.............................................................................................. 334
17.9.1
Re-parameterization of a module.............................................................................................. 334
17.9.2
Step 1: Editing parameters offline............................................................................................. 335
17.9.3
Step 2: Stopping the reserve CPU............................................................................................ 336
17.9.4
Step 3: Downloading a new hardware configuration to the reserve CPU................................. 336
17.9.5
Step 4: Switching to CPU with modified configuration.............................................................. 337
17.9.6
Step 5: Transition to redundant system mode .......................................................................... 339
18
Synchronization modules....................................................................................................................... 341
18.1
Synchronization modules for S7-400H..................................................................................... 341
18.2
Installation of fiber-optic cables................................................................................................. 346
18.3
Selecting fiber-optic cables ....................................................................................................... 349
19
S7-400 cycle and response times .......................................................................................................... 355
19.1
Cycle time.................................................................................................................................. 356
19.2
Calculating the cycle time ......................................................................................................... 358
19.3
Different cycle times.................................................................................................................. 364
19.4
Communication load ................................................................................................................. 366
19.5
Response time .......................................................................................................................... 369
19.6
Calculating cycle and response times....................................................................................... 375
19.7
Examples of calculating the cycle and response times ............................................................ 376
19.8
Interrupt response time ............................................................................................................. 379
19.9
Example of calculation of the interrupt response time .............................................................. 381
19.10
Reproducibility of delay and watchdog interrupts ..................................................................... 382
10
System Manual, 03/2012, A5E00267695-11
S7-400H
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