Siemens SIMATIC S7-400H System Manual page 9

16 Failure and replacement of components during operation ..................................................................... 265
16.1 Failure and replacement of components during operation ........................................................265
16.2 Failure and replacement of components during operation ........................................................265
16.2.1 Failure and replacement of a CPU ............................................................................................266
16.2.2 Failure and replacement of a power supply module..................................................................268
16.2.3 Failure and replacement of an input/output or function module ................................................269
16.2.4 Failure and replacement of a communication module...............................................................271
16.2.5 Failure and replacement of a synchronization module or fiber-optic cable ...............................272
16.2.6 Failure and replacement of an IM 460 and IM 461 interface module ........................................275
16.3 Failure and replacement of components of the distributed I/Os ................................................276
16.3.1 Failure and replacement of a PROFIBUS DP master ...............................................................276
16.3.2 Failure and replacement of a redundant PROFIBUS DP interface module ..............................277
16.3.3 Failure and replacement of a PROFIBUS DP slave ..................................................................278
16.3.4 Failure and replacement of PROFIBUS DP cables ...................................................................278
17 System modifications during operation .................................................................................................. 281
17.1 System modifications during operation......................................................................................281
17.2 Possible hardware modifications ...............................................................................................282
17.3 Adding components in PCS 7 ....................................................................................................286
17.3.1 PCS 7, step 1: Modification of hardware ...................................................................................287
17.3.2 PCS 7, step 2: Offline modification of the hardware configuration ............................................288
17.3.3 PCS 7, step 3: Stopping the reserve CPU.................................................................................288
17.3.4 PCS 7, step 4: Loading a new hardware configuration in the reserve CPU..............................289
17.3.5 PCS 7, step 5: Switch to CPU with modified configuration........................................................289
17.3.6 PCS 7, step 6: Transition to redundant system mode ...............................................................291
17.3.7 PCS 7, step 7: Editing and downloading the user program.......................................................292
17.3.8 PCS7, Using free channels on an existing module....................................................................293
17.3.9 Adding interface modules in PCS 7 ...........................................................................................294
17.4 Removing components in PCS 7 ...............................................................................................295
17.4.1 PCS 7, step 1: Editing the hardware configuration offline .........................................................296
17.4.2 PCS 7, step 2: Editing and downloading the user program.......................................................297
17.4.3 PCS 7, step 3: Stopping the reserve CPU.................................................................................298
17.4.4 PCS 7, step 4: Downloading a new hardware configuration to the reserve CPU......................298
17.4.5 PCS 7, step 5: Switching to CPU with modified configuration...................................................299
17.4.6 PCS 7, step 6: Transition to redundant system mode ...............................................................300
17.4.7 PCS 7, step 7: Modification of hardware ...................................................................................301
17.4.8 Removing interface modules in PCS 7 ......................................................................................302
17.5 Adding components in STEP 7 ..................................................................................................303
17.5.1 STEP 7, step 1: Adding hardware..............................................................................................304
17.5.2 STEP 7, step 2: Offline modification of the hardware configuration ..........................................305
17.5.3 STEP 7, step 3: Expanding and downloading OBs ...................................................................305
17.5.4 STEP 7, step 4: Stopping the reserve CPU...............................................................................306
17.5.5 STEP 7, step 5: Loading a new hardware configuration in the reserve CPU............................306
17.5.6 STEP 7, step 6: Switch to CPU with modified configuration......................................................307
17.5.7 STEP 7, step 7: Transition to redundant system mode .............................................................308
17.5.8 STEP 7, step 8: Editing and downloading the user program.....................................................309
17.5.9 STEP7, Using free channels on an existing module..................................................................310
17.5.10 Adding interface modules in STEP 7 .........................................................................................311
S7-400H
System Manual, 03/2012, A5E00267695-11
Table of contents
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